Flameproof Metal
Oxide Resistors
WMO-S Series
Cost effective
Small size for power rating
Good pulse handling capability
Flameproof protection
Electrical Data
WMO錕?frac12;S
Power rating @70擄C
Resistance range
Limiting element voltage
TCR (25 to 75擄C)
Isolation Voltage
Resistance tolerance
Standard Values
Thermal Impedance
擄C/watt
擄C
125
105
Ambient temperature range
watts
ohms
volts
ppm/擄C
volts
%
250
5
E24
75
-55 to +155
63
42
250
300
350
350
500
錕?frac12;
WMO1S
1
WMO2S
2
10R 聳 100K
350
500
WMO3S
3
WMO5S
5
Physical Data
Dimensions (mm) and Weight (g)
Type
WMO錕?frac12;S
WMO1S
WMO2S
WMO3S
WMO5S
L max.
7.5
10
12
16
26
D max.
3
4.5
5
5.5
8.5
D
f min.
22
21
20
25
29
d nom.
0.6
0.7
0.7
0.8
0.8
PCB mounting centres
Min. bend radius
0.6
1.05
1.05
1.2
1.2
Wt. nom.
0.22
0.42
0.63
1.0
3.7
12.7
15.2
17.8
20.3
30.5
d
L
f
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn聮s own data and is considered accurate at time of going to print.
漏 Welwyn Components Limited
Bedlington Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com
A subsidiary of
TT electronics plc
Issue B . 03.07
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