Film Capacitors
Metallized Polyester Film Capacitors (MKT-S)
Series/Type:
B32537
Date:
May 2009
The following products presented in this data sheet are being withdrawn.
Ordering Code
B32537B8335J000
B32537B8334K000
B32537B8334J000
Substitute Product
Date of
Withdrawal
2012-10-19
2012-10-19
2012-10-19
Deadline Last
Orders
2013-01-19
2013-01-19
2013-01-19
Last Shipments
2013-04-19
2013-04-19
2013-04-19
© EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
Ordering Code
B32537B8333K000
B32537B8333J000
B32537B8225K000
B32537B8225J000
B32537B8224K000
B32537B8224J000
B32537B8155K000
B32537B8155J000
B32537B8154K000
B32537B8154J000
B32537B8105K000
B32537B8105J000
B32537B8104K000
B32537B8104J000
B32537B5685K000
B32537B5685J000
B32537B5684K000
B32537B5684J000
B32537B5475K000
B32537B5475J000
B32537B5474K000
B32537B5474J000
B32537B2106J000
B32537B2106K000
B32537B5335J000
B32537B5335K000
B32537B5225K000
B32537B5225J000
B32537B5155K000
B32537B5155J000
B32537B5106K000
B32537B5106J000
B32537B5105K000
B32537B5105J000
B32537B3685K000
B32537B3685J000
B32537B3684K000
B32537B3684J000
Substitute Product
Date of
Withdrawal
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
Deadline Last
Orders
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
Last Shipments
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
Ordering Code
B32537B3475K000
B32537B3475J000
B32537B3474K000
B32537B3474J000
B32537B3335K000
B32537B3335J000
B32537B3334K000
B32537B3334J000
B32537B3225K000
B32537B3225J000
B32537B3224K000
B32537B3224J000
B32537B3155K000
B32537B3155J000
B32537B3154K000
B32537B3154J000
B32537B3106K000
B32537B3106J000
B32537B3105K000
B32537B3105J000
B32537B3104K000
B32537B3104J000
B32537B2685K000
B32537B2685J000
B32537B2684K000
B32537B2684J000
B32537B2475K000
B32537B2475J000
B32537B2474K000
B32537B2474J000
B32537B2335K000
B32537B2335J000
B32537B2334K000
B32537B2334J000
B32537B2225K000
B32537B2225J000
B32537B2224K000
B32537B2224J000
Substitute Product
Date of
Withdrawal
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
Deadline Last
Orders
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
Last Shipments
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
Ordering Code
B32537B2155K000
B32537B2155J000
B32537B2154K000
B32537B2154J000
B32537B2105K000
B32537B2105J000
B32537B2104K000
B32537B2104J000
B32537B8684K000
B32537B8684J000
B32537B8683K000
B32537B8683J000
B32537B8475K000
B32537B8475J000
B32537B8474K000
B32537B8474J000
B32537B5335K000
B32537B5335J000
B32537B1685K000
B32537B1685J000
B32537B1684K000
B32537B1684J000
B32537B1476K000
B32537B1476J000
B32537B1475K000
B32537B1475J000
B32537B1474K000
B32537B1474J000
B32537B1335K000
B32537B1335J000
B32537B1334K000
B32537B1334J000
B32537B1226K000
B32537B1226J000
B32537B1225K000
B32537B1225J000
B32537B1224K000
B32537B1224J000
Substitute Product
Date of
Withdrawal
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
Deadline Last
Orders
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
Last Shipments
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
Ordering Code
B32537B1155K000
B32537B1155J000
B32537B1154K000
B32537B1154J000
B32537B1107K000
B32537B1107J000
B32537B1106K000
B32537B1106J000
B32537B1105K000
B32537B1105J000
B32537B1104K000
B32537B1104J000
B32537B8473K000
B32537B8473J000
B32537B8335K000
Substitute Product
Date of
Withdrawal
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
2012-10-19
Deadline Last
Orders
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
2013-01-19
Last Shipments
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
2013-04-19
For further information please contact your nearest EPCOS sales office, which will also support
you in selecting a suitable substitute. The addresses of our worldwide sales network are
presented at www.epcos.com/sales.
Metallized polyester film capacitors (MKT-S)
B32537
High reliability (wound)
Typical applications
Measurement equipment
Rough environments
High-rel circuits in industrial electronics
Dimensional drawing
Climatic
Max. operating temperature: 125 °C
Climatic category (IEC 60068-1): 55/100/56
Features
Optimum self-healing capability
Excellent short circuit protection
Very high reliability
Construction
Dielectric: polyethylene terephthalate
(polyester, PET)
Construction with structured metallization
Tubular winding
Encapsulated in metal tube
Insulating sleeve
Face ends sealed with epoxy resin
Dimensions in mm
Diameter d
Lead diameter d1
8.5 ... 16 >16
0.8
1.0
When bending leads take care to leave a
clearance of 1 mm to the capacitor body.
Terminals
Central axial leads, lead-free tinned
Marking
Manufacturer's logo, style (MKT-S),
rated capacitance (coded)
capacitance tolerance (code letter)
rated voltage, date of manufacture (coded)
Delivery mode
Bulk (untaped)
For notes on taping, refer to chapter "Taping and packing“.
Please read Cautions and warnings and
Important notes at the end of this document.
<8.5
0.6
Page 2 of 20
B32537
High reliability (wound)
Overview of types
Type
B32537
VR (V DC)
50
100
160
250
630
VRMS (V AC)
20
35
60
90
200
CR (µF)
0.033
0.047
0.068
0.10
0.15
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
22
47
100
Please read Cautions and warnings and
Important notes at the end of this document.
Page 3 of 20
B32537
High reliability (wound)
Ordering codes and packing units
VR
V DC
50
100
VRMS
CR
f ≤60 Hz
V AC
µF
20
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
35
0.10
0.15
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
22
47
100
Max. dimensions
d×l
mm
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
8.4 × 21.0
9.4 × 21.0
10.7 × 21.0
11.7 × 21.0
12.7 × 21.0
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
8.4 × 21.0
8.4 × 21.0
9.4 × 21.0
9.4 × 21.0
11.7 × 21.0
10.7 × 34.0
10.7 × 34.0
15.7 × 34.0
20.7 × 34.0
29.7 × 34.0
Ordering code
(composition see
below)
B32537B5474+000
B32537B5684+000
B32537B5105+000
B32537B5155+000
B32537B5225+000
B32537B5335+000
B32537B5475+000
B32537B5685+000
B32537B5106+000
B32537B1104+000
B32537B1154+000
B32537B1224+000
B32537B1334+000
B32537B1474+000
B32537B1684+000
B32537B1105+000
B32537B1155+000
B32537B1225+000
B32537B1335+000
B32537B1475+000
B32537B1685+000
B32537B1106+000
B32537B1226+000
B32537B1476+000
B32537B1107+000
MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further E series and intermediate capacitance values on request.
Composition of ordering code
+ = Capacitance tolerance code:
K = ±10%
J = ±5%
Please read Cautions and warnings and
Important notes at the end of this document.
Page 4 of 20
Untaped
pcs./MOQ
200
200
200
200
200
80
80
80
80
200
200
200
200
200
200
200
200
80
80
80
80
80
80
80
80
B32537
High reliability (wound)
Ordering codes and packing units
VR
V DC
160
250
VRMS
CR
f ≤60 Hz
V AC
µF
60
0.10
0.15
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
90
0.10
0.15
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
6.8
10
Max. dimensions
d×l
mm
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
8.4 × 21.0
8.4 × 21.0
9.4 × 21.0
10.7 × 21.0
11.7 × 21.0
10.7 × 34.0
12.7 × 34.0
12.7 × 34.0
15.7 × 34.0
7.4 × 18.5
7.4 × 18.5
7.4 × 18.5
8.4 × 21.0
9.4 × 21.0
9.4 × 21.0
11.7 × 21.0
12.7 × 21.0
13.7 × 21.0
12.7 × 34.0
15.7 × 34.0
17.7 × 34.0
20.7 × 34.0
Ordering code
(composition see
below)
B32537B2104+000
B32537B2154+000
B32537B2224+000
B32537B2334+000
B32537B2474+000
B32537B2684+000
B32537B2105+000
B32537B2155+000
B32537B2225+000
B32537B2335+000
B32537B2475+000
B32537B2685+000
B32537B2106+000
B32537B3104+000
B32537B3154+000
B32537B3224+000
B32537B3334+000
B32537B3474+000
B32537B3684+000
B32537B3105+000
B32537B3155+000
B32537B3225+000
B32537B3335+000
B32537B3475+000
B32537B3685+000
B32537B3106+000
MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further E series and intermediate capacitance values on request.
Composition of ordering code
+ = Capacitance tolerance code:
K = ±10%
J = ±5%
Please read Cautions and warnings and
Important notes at the end of this document.
Page 5 of 20
Untaped
pcs./MOQ
200
200
200
200
200
200
80
80
80
80
80
80
80
200
200
200
200
80
80
80
80
80
80
80
80
80
B32537
High reliability (wound)
Ordering codes and packing units
VR
V DC
630
VRMS
CR
f ≤60 Hz
V AC
µF
200
0.033
0.047
0.068
0.10
0.15
0.22
0.33
0.47
0.68
1.0
1.5
2.2
3.3
4.7
Max. dimensions
d×l
mm
7.4 × 18.5
7.4 × 18.5
8.4 × 21.0
9.4 × 21.0
9.4 × 21.0
11.7 × 21.0
12.7 × 21.0
13.7 × 21.0
12.7 × 34.0
15.7 × 34.0
17.7 × 34.0
20.7 × 34.0
25.7 × 34.0
29.7 × 34.0
Ordering code
(composition see
below)
B32537B8333+000
B32537B8473+000
B32537B8683+000
B32537B8104+000
B32537B8154+000
B32537B8224+000
B32537B8334+000
B32537B8474+000
B32537B8684+000
B32537B8105+000
B32537B8155+000
B32537B8225+000
B32537B8335+000
B32537B8475+000
MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further E series and intermediate capacitance values on request.
Composition of ordering code
+ = Capacitance tolerance code:
K = ±10%
J = ±5%
Please read Cautions and warnings and
Important notes at the end of this document.
Page 6 of 20
Untaped
pcs./MOQ
200
200
200
80
80
80
80
80
80
80
80
80
80
80
B32537
High reliability (wound)
Technical data
Operating temperature range
Max. operating temperature Top,max
Upper category temperature Tmax
Lower category temperature Tmin
Rated temperature TR
Dissipation factor tan δ (in 10-3) CR (µF)
≤ 0.47
at 20 °C
(upper limit values)
at
1 kHz 7
at 10 kHz 15
Insulation resistance Rins
or time constant τ = CR Rins
at 20 °C, rel. humidity ≤ 65%
(minimum as-delivered values)
DC test voltage
CR
≤ 0.33 µF
> 0.33 µF
0.47 < CR ≤4.7 4.7 < CR ≤10.0 > 10.0
8
22
Failure criteria:
Total failure
Failure due to variation
of parameters
Please read Cautions and warnings and
Important notes at the end of this document.
8
25
10
> 15000 MΩ
> 5000 s
1.4 VR, 2 s
TA (°C)
DC voltage derating
Category voltage VC
(continuous operation with VDC TA ≤ 85
VC = VR
or VAC at f ≤ 60 Hz)
85<TA≤100 VC = VR (165TA)/80
TA (°C)
DC voltage (max. hours)
Operating voltage Vop for
short operating periods
TA ≤ 100
Vop = 1.25 VC (2000 h)
(VDC or VAC at f ≤ 60 Hz)
100<TA≤125 Vop = 0.5 VR (1000 h)
Damp heat test
56 days/40 °C/93% relative humidity
Limit values after damp
Capacitance change ∆C/C
heat test
Dissipation factor change ∆ tan δ
Insulation resistance Rins
Reliability:
Failure rate λ
Service life tSL
+125 °C
+100 °C
55 °C
+85 °C
AC voltage derating
VC,RMS = VRMS
VC,RMS=VRMS (165TA)/80
AC voltage (max. hours)
Vop = 1.0 VC,RMS (2000 h)
Vop = 0.5 VRMS (1000 h)
≤ 5%
≤ 5 10-3 (at 1 kHz)
≥ 50% of minimum
as-delivered values
1 fit (≤ 1 10-9/h) at 0.5 VR, 40 °C
200 000 h at 1.0 VR, 85 °C
For conversion to other operating conditions and temperatures,
refer to chapter "Quality, 2 Reliability".
Short circuit or open circuit
Capacitance change ∆C/C
Dissipation factor tan δ
Insulation resistance Rins
or time constant τ = CR Rins
Page 7 of 20
> 10%
> 1.5 upper limit value
< 150 MΩ (CR ≤ 0.33 µF)
< 50 s
(CR > 0.33 µF)
B32537
High reliability (wound)
Pulse handling capability
"dV/dt" represents the maximum permissible voltage change per unit of time for non-sinusoidal
voltages, expressed in V/µs.
"k0" represents the maximum permissible pulse characteristic of the waveform applied to the
capacitor, expressed in V2/µs.
Note:
The values of dV/dt and k0 provided below must not be exceeded in order to avoid damaging the
capacitor.
dV/dt values
Length of capacitor
VR
VRMS
V DC
V AC
50
20
100
35
160
60
250
90
630
200
18.5 mm
21 mm
34 mm
dV/dt in V/µs
2.5
13
20
23
40
1.5
9
12
16
26
6
8
10
18
18.5 mm
21 mm
34 mm
k0 in V2/µs
250
2 600
6 400
11 500
50 400
150
1 800
3 840
8 000
32 800
k0 values
Length of capacitor
VR
VRMS
V DC
V AC
50
20
100
35
160
60
250
90
630
200
Please read Cautions and warnings and
Important notes at the end of this document.
Page 8 of 20
1 200
2 560
5 000
22 700
B32537
High reliability (wound)
Impedance Z versus frequency f
(typical values)
Permissible AC voltage VRMS versus frequency f
Values can be obtained on request. In specific cases please provide a scaled voltage/ time graph
and state operating conditions.
Please read Cautions and warnings and
Important notes at the end of this document.
Page 9 of 20
B32537
High reliability (wound)
Mounting guidelines
1
Soldering
1.1
Solderability of leads
The solderability of terminal leads is tested to IEC 60068-2-20, test Ta, method 1.
Before a solderability test is carried out, terminals are subjected to accelerated ageing (to
IEC 60068-2-2, test Ba: 4 h exposure to dry heat at 155 °C). Since the ageing temperature is far
higher than the upper category temperature of the capacitors, the terminal wires should be cut off
from the capacitor before the ageing procedure to prevent the solderability being impaired by the
products of any capacitor decomposition that might occur.
Solder bath temperature
235 ±5 °C
Soldering time
2.0 ±0.5 s
Immersion depth
2.0 +0/0.5 mm from capacitor body or seating plane
Evaluation criteria:
Visual inspection
Wetting of wire surface by new solder ≥90%, free-flowing solder
1.2
Resistance to soldering heat
Resistance to soldering heat is tested to IEC 60068-2-20, test Tb, method 1A.
Conditions:
Series
Solder bath temperature Soldering time
MKT boxed (except 2.5 × 6.5 × 7.2 mm) 260 ±5 °C
coated
uncoated (lead spacing > 10 mm)
MFP
MKP (lead spacing > 7.5 mm)
MKT boxed (case 2.5 × 6.5 × 7.2 mm)
MKP (lead spacing ≤ 7.5 mm)
MKT uncoated (lead spacing ≤ 10 mm)
insulated (B32559)
Please read Cautions and warnings and
Important notes at the end of this document.
Page 10 of 20
10 ±1 s
5 ±1 s
<4s
recommended soldering
profile for MKT uncoated
(lead spacing ≤ 10 mm) and
insulated (B32559)
B32537
High reliability (wound)
Immersion depth
2.0 +0/0.5 mm from capacitor body or seating plane
Shield
Heat-absorbing board, (1.5 ±0.5) mm thick, between capacitor
body and liquid solder
Evaluation criteria:
Visual inspection
∆C/C0
tan δ
Please read Cautions and warnings and
Important notes at the end of this document.
No visible damage
2% for MKT/MKP/MFP
5% for EMI suppression capacitors
As specified in sectional specification
Page 11 of 20
B32537
High reliability (wound)
1.3
General notes on soldering
Permissible heat exposure loads on film capacitors are primarily characterized by the upper category temperature Tmax. Long exposure to temperatures above this type-related temperature limit
can lead to changes in the plastic dielectric and thus change irreversibly a capacitor's electrical
characteristics. For short exposures (as in practical soldering processes) the heat load (and thus
the possible effects on a capacitor) will also depend on other factors like:
Pre-heating temperature and time
Forced cooling immediately after soldering
Terminal characteristics:
diameter, length, thermal resistance, special configurations (e.g. crimping)
Height of capacitor above solder bath
Shadowing by neighboring components
Additional heating due to heat dissipation by neighboring components
Use of solder-resist coatings
The overheating associated with some of these factors can usually be reduced by suitable countermeasures. For example, if a pre-heating step cannot be avoided, an additional or reinforced
cooling process may possibly have to be included.
EPCOS recommends the following conditions:
Pre-heating with a maximum temperature of 110 °C
Temperature inside the capacitor should not exceed the following limits:
MKP/MFP 110 °C
MKT 160 °C
When SMD components are used together with leaded ones, the leaded film capacitors should
not pass into the SMD adhesive curing oven. The leaded components should be assembled after the SMD curing step.
Leaded film capacitors are not suitable for reflow soldering.
Uncoated capacitors
For uncoated MKT capacitors with lead spacings ≤10 mm (B32560/B32561) the following measures are recommended:
pre-heating to not more than 110 °C in the preheater phase
rapid cooling after soldering
Please read Cautions and warnings and
Important notes at the end of this document.
Page 12 of 20
B32537
High reliability (wound)
2
Cleaning
To determine whether the following solvents, often used to remove flux residues and other substances, are suitable for the capacitors described, refer to the table below:
Type
Ethanol,
isopropanol,
n-propanol
MKT
(uncoated)
MKT, MKP, MFP
(coated/boxed)
Suitable
n-propanol-water
mixtures,
water with surface
tension-reducing
tensides (neutral)
Unsuitable
Solvent from
table A (see
next page)
Suitable
Suitable
Solvent from
table B (see
next page)
In part suitable Unsuitable
Even when suitable solvents are used, a reversible change of the electrical characteristics may
occur in uncoated capacitors immediately after they are washed. Thus it is always recommended
to dry the components (e.g. 4 h at 70 °C) before they are subjected to subsequent electrical testing.
Table A
Manufacturers' designations for trifluoro-trichloro-ethane-based cleaning solvents (selection)
Trifluoro-trichloroethane
Freon TF
Frigen 113 TR
Arklone P
Kaltron 113 MDR
Flugene 113
Mixtures of trifluoro-trichloro-ethane with ethanol and
isopropanol
Freon TE 35; Freon TP 35; Freon TES
Frigen 113 TR-E; Frigen 113 TR-P; Frigen TR-E 35
Arklone A; Arklone L; Arklone K
Kaltron 113 MDA; Kaltron 113 MDI; Kaltron 113 MDI 35
Flugene 113 E; Flugene 113 IPA
Manufacturer
Du Pont
Hoechst
ICI
Kali-Chemie
Rhone-Progil
Table B (worldwide banned substances)
Manufacturers' designations for unsuitable cleaning solvents (selection)
Mixtures of chlorinated hydrocarbons and ketones with fluorated hydrocarbons
Freon TMC; Freon TA; Freon TC
Arklone E
Kaltron 113 MDD; Kaltron 113 MDK
Flugene 113 CM
Please read Cautions and warnings and
Important notes at the end of this document.
Page 13 of 20
Manufacturer
Du Pont
ICI
Kali-Chemie
Rhone-Progil
B32537
High reliability (wound)
3
Embedding of capacitors in finished assemblies
In many applications, finished circuit assemblies are embedded in plastic resins. In this case,
both chemical and thermal influences of the embedding ("potting") and curing processes must be
taken into account.
Our experience has shown that the following potting materials can be recommended: non-flexible
epoxy resins with acid-anhydride hardeners; chemically inert, non-conducting fillers; maximum
curing temperature of 100 °C.
Caution:
Consult us first if you wish to embed uncoated types!
Please read Cautions and warnings and
Important notes at the end of this document.
Page 14 of 20
B32537
High reliability (wound)
Cautions and warnings
Do not exceed the upper category temperature (UCT).
Do not apply any mechanical stress to the capacitor terminals.
Avoid any compressive, tensile or flexural stress.
Do not move the capacitor after it has been soldered to the PC board.
Do not pick up the PC board by the soldered capacitor.
Do not place the capacitor on a PC board whose PTH hole spacing differs from the specified
lead spacing.
Do not exceed the specified time or temperature limits during soldering.
Avoid external energy inputs, such as fire or electricity.
Avoid overload of the capacitors.
The table below summarizes the safety instructions that must always be observed. A detailed description can be found in the relevant sections of the chapters "General technical information" and
"Mounting guidelines".
Topic
Storage conditions
Flammability
Resistance to
vibration
Safety information
Reference chapter
"General technical
information"
Make sure that capacitors are stored within the
4.5
specified range of time, temperature and humidity "Storage conditions"
conditions.
Avoid external energy, such as fire or electricity
5.3
(passive flammability), avoid overload of the
"Flammability"
capacitors (active flammability) and consider the
flammability of materials.
Do not exceed the tested ability to withstand
5.2
vibration. The capacitors are tested to
"Resistance to vibration"
IEC 60068-2-6.
EPCOS offers film capacitors specially designed
for operation under more severe vibration regimes
such as those found in automotive applications.
Consult our catalog "Film Capacitors for
Automotive Electronics".
Please read Cautions and warnings and
Important notes at the end of this document.
Page 15 of 20
B32537
High reliability (wound)
Topic
Safety information
Soldering
Do not exceed the specified time or temperature
limits during soldering.
Cleaning
Use only suitable solvents for cleaning capacitors.
Embedding of
When embedding finished circuit assemblies in
capacitors in
plastic resins, chemical and thermal influences
finished assemblies must be taken into account.
Caution: Consult us first, if you also wish to
embed other uncoated component types!
Please read Cautions and warnings and
Important notes at the end of this document.
Page 16 of 20
Reference chapter
"Mounting guidelines"
1 "Soldering"
2 "Cleaning"
3 "Embedding of
capacitors in finished
assemblies"
B32537
High reliability (wound)
Symbols and terms
Symbol
α
αC
A
βC
C
CR
∆C
∆C/C
∆C/CR
dt
∆t
∆T
∆tan δ
∆V
dV/dt
∆V/∆t
E
ESL
ESR
f
f1
f2
fr
FD
FT
i
IC
English
Heat transfer coefficient
Temperature coefficient of capacitance
Capacitor surface area
Humidity coefficient of capacitance
Capacitance
Rated capacitance
Absolute capacitance change
Relative capacitance change (relative
deviation of actual value)
Capacitance tolerance (relative deviation
from rated capacitance)
Time differential
Time interval
Absolute temperature change
(self-heating)
Absolute change of dissipation factor
Absolute voltage change
Time differential of voltage function (rate
of voltage rise)
Voltage change per time interval
Activation energy for diffusion
Self-inductance
Equivalent series resistance
Frequency
Frequency limit for reducing permissible
AC voltage due to thermal limits
German
Wärmeübergangszahl
Temperaturkoeffizient der Kapazität
Kondensatoroberfläche
Feuchtekoeffizient der Kapazität
Kapazität
Nennkapazität
Absolute Kapazitätsänderung
Relative Kapazitätsänderung (relative
Abweichung vom Ist-Wert)
Kapazitätstoleranz (relative Abweichung
vom Nennwert)
Differentielle Zeit
Zeitintervall
Absolute Temperaturänderung
(Selbsterwärmung)
Absolute Änderung des Verlustfaktors
Absolute Spannungsänderung
Differentielle Spannungsänderung
(Spannungsflankensteilheit)
Spannungsänderung pro Zeitintervall
Aktivierungsenergie zur Diffusion
Eigeninduktivität
Ersatz-Serienwiderstand
Frequenz
Grenzfrequenz für thermisch bedingte
Reduzierung der zulässigen
Wechselspannung
Frequency limit for reducing permissible Grenzfrequenz für strombedingte
AC voltage due to current limit
Reduzierung der zulässigen
Wechselspannung
Resonant frequency
Resonanzfrequenz
Thermal acceleration factor for diffusion Therm. Beschleunigungsfaktor zur
Diffusion
Derating factor
Deratingfaktor
Current (peak)
Stromspitze
Category current (max. continuous
Kategoriestrom (max. Dauerstrom)
current)
Please read Cautions and warnings and
Important notes at the end of this document.
Page 17 of 20
B32537
High reliability (wound)
Symbol
IRMS
iz
k0
LS
λ
λ0
λtest
Pdiss
Pgen
Q
ρ
R
R
Ri
Rins
RP
RS
S
t
T
τ
tan δ
tan δD
tan δP
tan δS
TA
Tmax
Tmin
tOL
Top
TR
Tref
tSL
VAC
English
(Sinusoidal) alternating current,
root-mean-square value
Capacitance drift
Pulse characteristic
Series inductance
Failure rate
Constant failure rate during useful
service life
Failure rate, determined by tests
Dissipated power
Generated power
Heat energy
Density of water vapor in air
Universal molar constant for gases
Ohmic resistance of discharge circuit
Internal resistance
Insulation resistance
Parallel resistance
Series resistance
severity (humidity test)
Time
Temperature
Time constant
Dissipation factor
Dielectric component of dissipation
factor
Parallel component of dissipation factor
Series component of dissipation factor
Ambient temperature
Upper category temperature
Lower category temperature
Operating life at operating temperature
and voltage
Operating temperature
Rated temperature
Reference temperature
Reference service life
AC voltage
Please read Cautions and warnings and
Important notes at the end of this document.
German
(Sinusförmiger) Wechselstrom
Inkonstanz der Kapazität
Impulskennwert
Serieninduktivität
Ausfallrate
Konstante Ausfallrate in der
Nutzungsphase
Experimentell ermittelte Ausfallrate
Abgegebene Verlustleistung
Erzeugte Verlustleistung
Wärmeenergie
Dichte von Wasserdampf in Luft
Allg. Molarkonstante für Gas
Ohmscher Widerstand des
Entladekreises
Innenwiderstand
Isolationswiderstand
Parallelwiderstand
Serienwiderstand
Schärfegrad (Feuchtetest)
Zeit
Temperatur
Zeitkonstante
Verlustfaktor
Dielektrischer Anteil des Verlustfaktors
Parallelanteil des Verlfustfaktors
Serienanteil des Verlustfaktors
Umgebungstemperatur
Obere Kategorietemperatur
Untere Kategorietemperatur
Betriebszeit bei Betriebstemperatur und
-spannung
Beriebstemperatur
Nenntemperatur
Referenztemperatur
Referenz-Lebensdauer
Wechselspannung
Page 18 of 20
B32537
High reliability (wound)
Symbol
VC
VC,RMS
English
Category voltage
Category AC voltage
VCD
Vch
VDC
VFB
Vi
Vo
Vop
Vp
Vpp
VR
Corona-discharge onset voltage
Charging voltage
DC voltage
Fly-back capacitor voltage
Input voltage
Output voltage
Operating voltage
Peak pulse voltage
Peak-to-peak voltage Impedance
Rated voltage
Amplitude of rated AC voltage
R
VRMS
German
Kategoriespannung
(Sinusförmige)
Kategorie-Wechselspannung
Teilentlade-Einsatzspannung
Ladespannung
Gleichspannung
Spannung (Flyback)
Eingangsspannung
Ausgangssspannung
Betriebsspannung
Impuls-Spitzenspannung
Spannungshub
Nennspannung
Amplitude der Nenn-Wechselspannung
VSC
Vsn
(Sinusoidal) alternating voltage,
root-mean-square value
S-correction voltage
Snubber capacitor voltage
Z
Impedance
Spannung bei Anwendung "S-correction"
Spannung bei Anwendung
"Beschaltung"
Scheinwiderstand
Lead spacing
Rastermaß
Please read Cautions and warnings and
Important notes at the end of this document.
(Sinusförmige) Wechselspannung
Page 19 of 20
Important notes
The following applies to all products named in this publication:
1. Some parts of this publication contain statements about the suitability of our products for
certain areas of application. These statements are based on our knowledge of typical requirements that are often placed on our products in the areas of application concerned. We
nevertheless expressly point out that such statements cannot be regarded as binding
statements about the suitability of our products for a particular customer application.
As a rule, EPCOS is either unfamiliar with individual customer applications or less familiar
with them than the customers themselves. For these reasons, it is always ultimately incumbent on the customer to check and decide whether an EPCOS product with the properties described in the product specification is suitable for use in a particular customer application.
2. We also point out that in individual cases, a malfunction of electronic components or
failure before the end of their usual service life cannot be completely ruled out in the
current state of the art, even if they are operated as specified. In customer applications
requiring a very high level of operational safety and especially in customer applications in
which the malfunction or failure of an electronic component could endanger human life or
health (e.g. in accident prevention or lifesaving systems), it must therefore be ensured by
means of suitable design of the customer application or other action taken by the customer
(e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by
third parties in the event of malfunction or failure of an electronic component.
3. The warnings, cautions and product-specific notes must be observed.
4. In order to satisfy certain technical requirements, some of the products described in this
publication may contain substances subject to restrictions in certain jurisdictions (e.g.
because they are classed as hazardous). Useful information on this will be found in our Material Data Sheets on the Internet (www.epcos.com/material). Should you have any more detailed questions, please contact our sales offices.
5. We constantly strive to improve our products. Consequently, the products described in this
publication may change from time to time. The same is true of the corresponding product
specifications. Please check therefore to what extent product descriptions and specifications
contained in this publication are still applicable before or when you place an order. We also
reserve the right to discontinue production and delivery of products. Consequently, we
cannot guarantee that all products named in this publication will always be available. The
aforementioned does not apply in the case of individual agreements deviating from the foregoing for customer-specific products.
6. Unless otherwise agreed in individual contracts, all orders are subject to the current version of the "General Terms of Delivery for Products and Services in the Electrical Industry" published by the German Electrical and Electronics Industry Association
(ZVEI).
7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DSSP,
MiniBlue, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, SIFERRIT,
SIFI, SIKOREL, SilverCap, SIMDAD, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse,
WindCap are trademarks registered or pending in Europe and in other countries. Further
information will be found on the Internet at www.epcos.com/trademarks.
Page 20 of 20