TT MF3S Flameproof protection Datasheet

Power Metal
Resistors
Power
FilmMetal
Resistors
Film Resistors
Power
Metal Film Resistors
Welwyn
Components
Make
Possible
Welwyn Components
MF-S Series
MF-S SeriesSmall size for power rating
Range of 4 sizes: 0.5 watt to 3 watt at 70˚C
MF-S
Series
Small
size for power rating
Flameproof protection
Small size
power 0.5
rating
Range
offor
4 sizes:
watt to 3 watt at 70˚C
Range of 4 sizes:
0.5 watt to 3 watt at 70°C
Flameproof
protection
Flameproof protection
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
Electrical Data
MF1/2S
Power rating at 70° C
Resistance range
Power rating Limiting
at 70° Celement voltage
watts
Resistance range
TCR
ohms
Limiting element voltage
Isolation voltage
TCR
Resistance tolerance
watts
MF1/2S
ohms
0.5
volts
volts
ppm/° C
Isolation voltage
Standard values
Resistance tolerance
Thermal impedance
Standard values
Ambient temperature range
Thermal impedance
%
volts
%
PCB
MF2S
0R1 – 1M
2.0 350
MF3S
2.0
MF3S
3.0
3.0
700
<
>1Ω : 1, 2, 5 80
140 1Ω : 5
110
E24 preferred -55 to 155
110
80
60
°C
140
60
-55 to 155
°C
Physical Data
Dimensions
Physical
Data(mm) & Weight (g)
1.0
1.0
° C/watt
° C/watt
Ambient temperature range
0.5
MF1S
MF2S
0R1 – 1M
< 10Ω :150
< 10Ω :350
350
500
<
< 10Ω :350
< 1Ω10Ω
: 5 :150 >1Ω : 1, 2, 5
500
E24 preferred 700
ppm/° C
volts
MF1S
Min.
Dimensions (mm) & Weight (g)
Type
MF1/2S
MF1S
MF2S
MF3S
mounting bend
d
PCB
D
+0.01
-0.06 Min.
Type
L LMx
D Max
f min
d nom
centres
radius
6.2
2.5
mounting
bend
10.2
MF1/2S +0 -0.5
0.6
1.02
0.6
+0 -0.25
d 21.0
D 9.0 f min3.6 +0.01
-0.06 centres
L LMF1S
Mx
D Max
d nom
radius Wt.nom
19.6
0.8
12.7
1.2
+0 -0.6
+0.5 -0
6.2
2.5
10.2
4.2
21.0
0.6
0.6
0.31.2
12.5
+0 MF2S
-0.5
+0 -0.25
17.8 1.02
0.8
18.4
9.0
+0MF3S
-0.6
12.5
+0 -2.1
14.5
+0.6 -0
+0 -2.1
3.6
14.5
+0.5 -0
4.2+0.6 -0
+0.8 -0
5.3
+0 -0.4
+0.8 -0
19.65.3
17.8
0.823.8
0.8
12.70.8
18.4
1.220.3
1.2
0.51.2
0.9
23.8
0.8
20.3
1.2
1.1
+0 -0.4
Wt.nom
0.3
d
D
0.5
0.9
d
D
1.1
L
L
f
f
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
GeneralNote
Note
General
Welwyn Components
reserves the
right to make changes
in ·product
specification
without notice
or liability.
© Welwyn
Components
Limited
Bedlington,
Northumberland
NE22 7AA,
UK
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information isTelephone:
subject to +44
Welwyn’s
own822181
data and
is considered
accurate
at time of
going [email protected]
to print.
(0) 1670
· Facsimile:
+44 (0)
1670 829465
· Email:
· Website: www.welwyn-tt.com
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone:
+44 (0) plc
1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
©
TT Electronics
A subsidiary of
TT electronics plc
A subsidiary of Issue C · 03.08
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147
Power
Metal Power
Flameproof
Film
Resistors
Metal
Film Resistors
Make Possible
Welwyn Components
MF-S Series
MF-S Series
Construction
Marking
The resistance element is a precisely controlled thin film of
metal alloy on a high purity ceramic core, protected by a
cement coating applied so that terminations remain
completely clear.
MF Series resistors are colour coded with 5 bands for 1%
tolerance or 4 bands for other tolerances. IEC 62 colours
are used.
Solvent Resistance
This permits a well defined body length, (clean lead to clean
lead dimension L).
The body protection and marking are resistant to all normal
industrial cleaning solvents suitable for printed circuits.
Terminations
Flammability
Material
Solder-coated copper wire.
Strength
The terminations meet the requirements of
IEC 68.2.21
The resistors will not burn or emit incandescent particles
under any condition of applied temperature or power
overload.
Solderability The terminations meet the requirements of
IEC 115-1, Clause 4.17.3.2
Performance Data
Maximum
Load: 1000 hours at 70˚C
R%
Shelf life: 12 months at room temperature
R%
5
1
Derating from rated power at 70˚C
R%
zero at 155˚ C
Climatic
R%
1
Climatic category
40/125/56
Temperature rapid change
R%
0.5
Resistance to solder heat
R%
0.5
Application Notes
1. If the resistors are to dissipate full rate power, it is
recommended that the terminations should not be
soldered closer than 4mm from the body.
2. Due to operating temperature limitations imposed by some
pcb materials, derating may be necessary. An estimate of
the temperature rise to be expected can be calculated
using the thermal impedance figures given under Electrical
Data.
Packaging
The preferred method of packaging is taped and ammo
packed, see figure 1 for critical dimensions.
Alternative packaging is available by special request.
Figure 1
c
3. Lead Formed resistors can also be supplied. Standard
options of Lancet, Radial and Goalpost forming are shown
in lead Form Information section.
f1
f2
b
6
Body location f
Type
6
1
–f2
1.4 mm
b
c
MF1/2S
52 2
5 0.5
MF1S
52 2
5 0.5
MF2S
52 2
5 0.5
MF3S
67 2
10 0.5
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone:
+44 (0) 1670
© TT Electronics
plc 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
148
www.ttelectronicsresistors.com
03.08
Issue C · 01.06
07.14
Flameproof
Power
Metal Power
Film
Resistors
Metal
Film Resistors
Make Possible
Welwyn Components
MF-S
MF-SSeries
Series
Ordering Procedure
Example: MF3S at 3.3 kilohms and 5% tolerance in ammo pack box of 1000 pieces –
MF3S–3K3JI
Type
Value (use IEC62 code)
Tolerance (use IEC62 code)
F
G
1%
2%
J
Packing
I
Ammo
5%
MF1/2S
MF1S
MF2S
MF3S
5000/box
2500/box
1500/box
1000/box
Standard
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone:
+44 (0) plc
1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
©
TT Electronics
148
www.ttelectronicsresistors.com
03.08
Issue C · 01.06
07.14
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