EPCOS B32928 Emi suppression capacitors (mkp) Datasheet

Film Capacitors
EMI Suppression Capacitors (MKP)
Series/Type:
B32921C/D ... B32928C/D
Date:
January 2014
© EPCOS AG 2014. Reproduction, publication and dissemination of this publication, enclosures hereto and the
information contained therein without EPCOS' prior express consent is prohibited.
EMI suppression capacitors (MKP)
B32921C/D ... B32928C/D
X2 / 305 V AC
Typical applications
X2 class for interference suppression
"Across the line" applications
Dimensional drawings
Drawing 1
Climatic
Max. operating temperature: 110 °C
Climatic category (IEC 60068-1): 40/110/56
Construction
Dielectric: polypropylene (MKP)
Plastic case (UL 94 V-0)
Epoxy resin sealing (UL 94 V-0)
Features
Very small dimensions
Self-healing properties
RoHS-compatible
Halogen-free capacitors available on request
Drawing 2
Terminals
Parallel wire leads, lead-free tinned
Special lead lengths available on request
Marking
Manufacturer's logo, lot number,
date code, rated capacitance (coded),
cap. tolerance (code letter),
rated AC voltage,
series number, sub-class (X2),
dielectric code (MKP), climatic category,
passive flammability category, approvals.
Delivery mode
Bulk (untaped)
Taped (Ammo pack or reel)
For taping details, refer to chapter
"Taping and packing"
Dimensions in mm
P1 = 20.3 mm
Lead
spacing
±0.4
Lead
diameter
d1 ±0.05
Type
Drawing
10
0.6
B32921
1
15
0.8
B32922
1
22.5
0.8
B32923
1
27.5
0.8
B32924
1
37.5
1.0
B32926
1 / 21)
52.5
1.2
B32928
2
1) A few individual types only
Please read Cautions and warnings and
Important notes at the end of this document.
Page 2 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Marking Examples
Approvals
Approval marks
Notes:
Standards
Certificate
EN 60384-14, IEC 60384-14
40010694 (approved by VDE)
(C ≤ 10 µF)
EN 60384-14, IEC 60384-14
E97863 (approved by UL)
UL 1414 / UL 1283
E97863 / E157153
CSA C22.2 No.1 / No. 8
E97863 / E157153 (approved by UL)
CQC (GB/T 14472-1998)
CQC06001015331 / CQC06001016454
UL 60384-14, CSA E60384-14
E97863 (approved by UL)
Effective January 2014, only for EMI supression capacitors:
– UL 60384-14 certification replaces both UL 1414 and UL 1283 standards.
– CSA C22.2 No. 1 and CSA C22.s No. 8 are replaced by CSA E60384-14.
– References like 1414, 1283 are removed from the capacitor marking
Capacitors under UL1414, UL1283 produced during or before 2013, are
accepted under UL scope.
Capacitors under CSA C22.2 No.1 / No. 8 produced during or before 2013,
are accepted under cUL scope.
Please read Cautions and warnings and
Important notes at the end of this document.
Page 3 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Overview of available types
Lead spacing 10 mm
15 mm
22.5 mm
27.5 mm
37.5 mm
52.5 mm
Type
B32922
B32923
B32924
B32926
B32928
B32921
CR (µF)
0.010
0.022
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
3.9
4.7
5.6
6.8
8.2
10
15
20
25
30
Please read Cautions and warnings and
Important notes at the end of this document.
Page 4 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Ordering codes and packing units
Lead
CR
spacing
mm
µF
10
0.010
0.022
0.033
0.047
0.068
0.10
15
0.033
0.047
0.068
0.10
0.15
0.22
0.33
0.33
0.47
0.68
Max. dimensions
w×h×l
mm
4.0 × 9.0 × 13.0
4.0 × 9.0 × 13.0
4.0 × 9.0 × 13.0
5.0 × 11.0 × 13.0
6.0 × 12.0 × 13.0
6.0 × 12.0 × 13.0
5.0 × 10.5 × 18.0
5.0 × 10.5 × 18.0
5.0 × 10.5 × 18.0
5.0 × 10.5 × 18.0
6.0 × 12.0 × 18.0
7.0 × 12.5 × 18.0
8.0 × 14.0 × 18.0
8.5 × 14.5 × 18.0
9.0 × 17.5 × 18.0
11.0 × 18.5 × 18.0
Ordering code
(composition see
below)
B32921C3103+*** ◆
B32921C3223+*** ◆
B32921C3333+*** ◆
B32921C3473+*** ◆
B32921C3683+***
B32921C3104M***
B32922C3333K***
B32922C3473K***
B32922C3683K*** ◆
B32922C3104+*** ◆
B32922C3154+*** ◆
B32922C3224+*** ◆
B32922C3334M*** ◆
B32922D3334K***
B32922C3474+*** ◆
B32922C3684+*** ◆
Ammo
pack
pcs./MOQ
4000
4000
4000
3320
2720
2720
4680
4680
4680
4680
3840
3320
2920
2720
2560
Reel
pcs./
MOQ
6800
6800
6800
5200
4400
4400
5200
5200
5200
5200
4400
3600
3000
2800
2800
2200
Untaped
pcs./
MOQ
4000
4000
4000
4000
4000
4000
4000
4000
4000
4000
4000
4000
2000
2000
2000
1000
Pins
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
◆ Preferred type
MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further intermediate capacitance values on request.
Composition of ordering code
+ = Capacitance tolerance code:
M = ±20%
K = ±10%
= (Closer tolerances on request)
Please read Cautions and warnings and
Important notes at the end of this document.
*** = Packaging code:
289 = Straight terminals, Ammo pack
189 = Straight terminals, Reel
240 = Crimped down from lead spacing 10 mm to
7.5 mm, Ammo pack
140 = Crimped down from lead spacing 10 mm to
7.5 mm, Reel
255 = Crimped down from lead spacing 15 mm to
7.5 mm, Ammo pack
155 = Crimped down from lead spacing 15 mm to
7.5 mm, Reel
003 = Straight terminals, untaped (lead length
3.2 ±0.3 mm)
000 = Straight terminals, untaped (lead length 6 1 mm)
Page 5 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Ordering codes and packing units
Lead
CR
spacing
mm
µF
22.5
0.22
0.33
0.33
0.47
0.68
1.0
1.5
2.2
27.5
0.68
1.0
1.5
2.2
3.3
3.3
4.7
4.7
5.6
Max. dimensions
w×h×l
mm
6.0 × 15.0 × 26.5
6.0 × 15.0 × 26.5
7.0 × 16.0 × 26.5
8.5 × 16.5 × 26.5
10.5 × 16.5 × 26.5
11.0 × 20.5 × 26.5
12.0 × 22.0 × 26.5
14.5 × 29.5 × 26.5
11.0 × 19.0 × 31.5
11.0 × 19.0 × 31.5
12.5 × 21.5 × 31.5
14.0 × 24.5 × 31.5
16.0 × 32.0 × 31.5
18.0 × 27.5 × 31.5
18.0 × 33.0 × 31.5
21.0 × 31.0 × 31.5
22.0 × 36.5 × 31.5
Ordering code
(composition see
below)
B32923C3224+***
B32923C3334M***
B32923D3334K***
B32923C3474+***
B32923C3684+***
B32923C3105+*** ◆
B32923C3155M***
B32923C3225+***
B32924C3684+***
B32924C3105+***
B32924C3155+*** ◆
B32924C3225+***
B32924D3335K***
B32924C3335M***
B32924C3475M***
B32924D3475K***
B32924C3565+***
Ammo
pack
pcs./MOQ
2720
2720
2320
1920
1560
1480
Reel
pcs./
MOQ
2800
2800
2400
2000
1600
1400
1400
1400
1200
Untaped
pcs./
MOQ
2880
2880
2520
2040
2160
2040
1800
1040
1280
1280
1120
1040
880
800
800
720
784
Pins
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
◆ Preferred type
MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further intermediate capacitance values on request.
Composition of ordering code
+ = Capacitance tolerance code:
M = ±20%
K = ±10%
= (Closer tolerances on request)
Please read Cautions and warnings and
Important notes at the end of this document.
*** = Packaging code:
289 = Straight terminals, Ammo pack
189 = Straight terminals, Reel
240 = Crimped down from lead spacing 10 mm to
7.5 mm, Ammo pack
140 = Crimped down from lead spacing 10 mm to
7.5 mm, Reel
255 = Crimped down from lead spacing 15 mm to
7.5 mm, Ammo pack
155 = Crimped down from lead spacing 15 mm to
7.5 mm, Reel
003 = Straight terminals, untaped (lead length
3.2 ±0.3 mm)
000 = Straight terminals, untaped (lead length 6 1 mm)
Page 6 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Ordering codes and packing units
Lead
CR
spacing
mm
µF
37.5
2.2
3.3
3.9
4.7
5.6
6.8
8.2
10
15
15
52.5
20
25
30
Max. dimensions
w×h×l
mm
14.0 × 25.0 × 41.5
16.0 × 28.5 × 41.5
16.0 × 28.5 × 41.5
18.0 × 32.5 × 41.5
18.0 × 32.5 × 41.5
20.0 × 39.5 × 41.5
20.0 × 39.5 × 41.5
28.0 × 42.5 × 41.5
30.0 × 45.0 × 42.0
33.0 × 48.0 × 42.0
30.0 × 45.0 × 57.5
35.0 × 50.0 × 57.5
35.0 × 50.0 × 57.5
Ordering code
(composition see
below)
B32926C3225+***
B32926C3335+***
B32926C3395+***
B32926C3475+***
B32926C3565+***
B32926C3685+***
B32926C3825+***
B32926C3106+***
B32926C3156M***
B32926D3156+***
B32928C3206+***
B32928C3256+***
B32928C3306M***
Ammo
pack
pcs./MOQ
Reel
pcs./
MOQ
Untaped
pcs./
MOQ
1380
800
800
720
720
640
640
440
200
180
280
108
108
Pins
2
2
2
2
2
2
2
2
2
4
4
4
4
◆ Preferred type
MOQ = Minimum Order Quantity, consisting of 4 packing units.
Further intermediate capacitance values on request.
Composition of ordering code
+ = Capacitance tolerance code:
M = ±20%
K = ±10%
= (Closer tolerances on request)
Please read Cautions and warnings and
Important notes at the end of this document.
*** = Packaging code:
289 = Straight terminals, Ammo pack
189 = Straight terminals, Reel
240 = Crimped down from lead spacing 10 mm to
7.5 mm, Ammo pack
140 = Crimped down from lead spacing 10 mm to
7.5 mm, Reel
255 = Crimped down from lead spacing 15 mm to
7.5 mm, Ammo pack
155 = Crimped down from lead spacing 15 mm to
7.5 mm, Reel
003 = Straight terminals, untaped (lead length
3.2 ±0.3 mm)
000 = Straight terminals, untaped (lead length 6 1 mm)
Page 7 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Technical data
Reference standard: IEC / UL 60384-14. All data given at T = 20 °C unless otherwise specified.
Max. operating temperature Top,max
Dissipation factor tan δ (in 10-3)
at 20 °C (upper limit values)
+110 °C
Insulation resistance Rins
or time constant τ = CR Rins
CR≤0.33 µF
at 20 °C, rel. humidity ≤ 65%
(minimum as-delivered values)
DC test voltage
CR≤0.1 µF 0.1µF<CR ≤2.2 µF CR >2.2 µF
at
1 kHz
100 kHz
1.0
5.0
1.0
2.0
CR>0.33 µF
100 000 MΩ 30 000 s
2121 V, 2 s
Passive flammability category
B
Maximum continuous DC voltage VDC 630 V
Maximum continuous AC voltage VAC 310 V (50/60 Hz)
Rated AC voltage (IEC 60384-14)
Operating AC voltage Vop at high
temperature
305 V (50/60 Hz)
TA ≤ 110 °C
TA ≤ 110 °C
Damp heat test
Limit values after damp heat test
56 days / 40 °C / 93% relative humidity
Capacitance change ∆C/C
≤ 5%
Dissipation factor change ∆ tan δ ≤ 0.5 10-3 (at 1 kHz)
Insulation resistance Rins
≤ 1.0 10-3 (at 10 kHz)
or time constant τ = CR Rins
≥ 50% of minimum
as-delivered values
Please read Cautions and warnings and
Important notes at the end of this document.
Page 8 of 22
Vop = VAC
(continuously)
Vop = 1.25 VAC (1000 h)
B32921C/D ... B32928C/D
X2 / 305 V AC
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 and k0 values
Lead spacing
dV/dt in V/µs
k0 in V2/µs
10 mm
475
408500
15 mm
340
292400
22.5 mm
170
146200
Impedance Z versus frequency f
(typical values)
Please read Cautions and warnings and
Important notes at the end of this document.
Page 9 of 22
27.5 mm
120
103200
37.5 mm
80
68800
52.5 mm
50
43200
B32921C/D ... B32928C/D
X2 / 305 V AC
Testing and Standards
Test
Reference
Electrical
Parameters
IEC 60384-14
Robustness of
terminations
Resistance to
soldering heat
Conditions of test
Voltage Proof:
Between terminals,
4.3 VR, 1 min.
Terminals and enclosure: 2 VR +
1500 V AC
Insulation resistance, RINS
Capacitance, C
Dissipation factor, tan δ
IEC 60068-2-21 Tensile strength (test Ua1)
Tensile
Wire diameter
force
0.5 < d1 ≤ 0.8 mm
10 N
0.8 < d1 ≤ 1.25 mm 20 N
IEC 60068-2-20, Solder bath temperature at
test Tb,
260 ± 5 °C, immersion for
method 1A
10 seconds
Performance
requirements
Within specified limits
Capacitance and tan δ
within specified limits
∆C/C0 ≤ 5%
tan δ within specified
limits
No visible damage
I∆C/C0 I ≤ 2%
tan δ within specified
limits
Rapid change of IEC 60384-16
temperature
TA = lower category temperature
TB = upper category temperature
Five cycles, duration t = 30 min.
Vibration
IEC 60384-14
Bump
IEC 60384-14
Climatic
sequence
IEC 60384-14
Test FC: vibration sinusoidal
No visible damage
Displacement: 0.75 mm
Accleration: 98 m/s2
Frequency: 10 Hz ... 500 Hz
Test duration: 3 orthogonal axes,
2 hours each axe
Test Eb: Total 4000 bumps with No visible damage
I∆C/C0 I ≤ 5%
400 m/s2 mounted on PCB
tan δ within specified
6 ms duration
limits
Dry heat TB / 16 h.
No visible damage
Damp heat cyclic, 1st cycle
I∆C/C0 I ≤ 5%
+ 55 °C / 24h / 95% ... 100% RH I∆ tan δ I ≤ 0.008,
Cold TA / 2h
C ≤ 1 µF
Damp heat cyclic, 5 cycles
I∆ tan δ I > 0.005,
+ 55 °C / 24h / 95% ... 100% rh
C > 1 µF
Voltage proof
RINS ≥ 50% of initial limit
Please read Cautions and warnings and
Important notes at the end of this document.
Page 10 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Damp Heat
Steady State
IEC 60384-14
Test Ca
40 °C / 93% RH / 56 days
Impulse test
Endurance
IEC 60384-14
3 impulses
TB / 1.25 VR / 1000 hours,
1000 Vrms for 0.1 s every hour
Passive
flammability
IEC 60384-14
Flame applied for a period of time B
depending on capacitor volume
Active
flammability
IEC 60384-14
20 discharges at 2.5 kV + VR
Please read Cautions and warnings and
Important notes at the end of this document.
Page 11 of 22
No visible damage
I∆C/C0 I ≤ 5%
I∆ tan δ I ≤ 0.008,
C ≤ 1 µF
I∆ tan δ I > 0.005,
C > 1 µF
Voltage proof
RINS ≥ 50% of initial limit
No visible damage
I∆C/C0 I ≤ 10%
I∆ tan δ I ≤ 0.008,
C ≤ 1 µF
I∆ tan δ I > 0.005,
C > 1 µF
Voltage proof
RINS ≥ 50% of initial limit
The cheesecloth shall
not burn with a flame
B32921C/D ... B32928C/D
X2 / 305 V AC
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 12 of 22
10 ±1 s
5 ±1 s
<4s
recommended soldering
profile for MKT uncoated
(lead spacing ≤ 10 mm) and
insulated (B32559)
B32921C/D ... B32928C/D
X2 / 305 V AC
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 13 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
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
Application note for X1 / X2 EMI capacitors
Please read Cautions and warnings and
Important notes at the end of this document.
Page 14 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Application note for the different possible X1 / X2 positions
In series with the powerline
(i.e. capacitive power supply)
In parallel with the powerline
Typical Applications:
Standard X2 are used parallel over the mains for
reducing electromagnetic interferences coming
from the grid. For such purposes they must meet
the applicable EMC directives and standards.
Typical Applications:
Power meters
ECUs for white goods and household
appliances
Different sensor applications
Severe ambient conditions
Basic circuit
Basic circuit
Required features
Required features
High capacitance stability over the lifetime
Narrow tolerances for a controlled current
supply
Recommended EPCOS product series
B3293* (305 V AC) heavy duty with
EN approval for X2 (UL Q1/2010)
B3265* MKP series
standard MKP capacitor without safety
approvals
B3267*L MKP series
standard MKP capacitor without safety
approvals
Please read Cautions and warnings and
Important notes at the end of this document.
Standard safety approvals
(ENEC, UL, CSA, CQC)
High pulse load capability
Withstand surge voltages
Recommended EPCOS product series
B3292*C/D (305 V AC)
standard series, approved as X2
B3291* (330 V AC), approved as X1
Page 15 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
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 16 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
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!
Reference chapter
"Mounting guidelines"
1 "Soldering"
2 "Cleaning"
3 "Embedding of
capacitors in finished
assemblies"
Design of EMI Capacitors
EPCOS EMI capacitors use polypropylene (PP) film metalized with a thin layer of Zinc (Zn).
The following key points have made this design suitable to IEC/UL testing, holding a minimum
size.
Overvoltage AC capability with very high temperature Endurance test of IEC60384-14
(3rd edition, 2005-07) / UL60384-14 (1st edition, 2009-04) must be performed at 1.25 × VR at
maximum temperature, during 1000 hours, with a capacitance drift less than 10%.
Higher breakdown voltage withstanding if compared to other film metallizations, like Aluminum.
IEC60384-14 (3rd edition, 2005-07) / UL60384-14 (1st edition, 2009-04) establishes high
voltage tests performed at 4.3 × VR 1 minute, impulse testing at 2500 V for C= 1 µF and active
flammability tests.
Damp heat steady state: 40 °C/ 93% RH / 56 days. (without voltage or current load)
Effect of humidity on capacitance stability
Long contact of a film capacitor with humidity can produce irreversible effects. Direct contact with
liquid water or excess exposure to high ambient humidity or dew will eventually remove the film
metallization and thus destroy the capacitor. Plastic boxed capacitors must be properly tested in
the final application at the worst expected conditions of temperature and humidity in order to
check if any parameter drift may provoke a circuit malfunction.
In case of penetration of humidity through the film, the layer of Zinc can be degraded, specially
under AC operation (change of polarity), accelerated by the temperature, provoking an increment
of the serial resistance of the electrode and eventually a reduction of the capacitance value.
For DC operation, the parameter drift is much less.
Plastic boxes and resins can not protect 100% against humidity. Metal enclosures, resin potting or
coatings or similar measures by customers in their applications will offer additional protection
against humidity penetration.
Please read Cautions and warnings and
Important notes at the end of this document.
Page 17 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
Display of ordering codes for EPCOS products
The ordering code for one and the same product can be represented differently in data sheets,
data books, other publications and the website of EPCOS, or in order-related documents such as
shipping notes, order confirmations and product labels. The varying representations of the
ordering codes are due to different processes employed and do not affect the
specifications of the respective products. Detailed information can be found on the Internet
under www.epcos.com/orderingcodes.
Please read Cautions and warnings and
Important notes at the end of this document.
Page 18 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
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 19 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
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 20 of 22
B32921C/D ... B32928C/D
X2 / 305 V AC
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 21 of 22
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, CeraLink, CeraPlas, CSMP, CSSP,
CTVS, DeltaCap, DigiSiMic, DSSP, FilterCap, FormFit, MiniBlue, MiniCell, MKD, MKK,
MLSC, MotorCap, PCC, PhaseCap, PhaseCube, PhaseMod, PhiCap, SIFERRIT, SIFI,
SIKOREL, SilverCap, SIMDAD, SiMic, 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 22 of 22