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WW/MWW/NWW Series
General Purpose and Precision Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Power Derating Curve:
120
100
80
60
40
20
25
75
125
175
225
275
325
350
Ambient Temperature (oC)
Mechanical Specifications
Type / Code
A
B
C
D
(Bulk) (1)
Unit
WW12 / NWW12
WW1, WWS2 / NWW1, NWWS2
WW1A / NWW1A
WW2, WWS3 / NWW2, NWWS3
WW2A / NWW2A
WW3, WWS4 / NWW3, NWWS4
WW3A / NWW3A
WW4, WWS5 / NWW4, NWWS5
WW5, WWS7 / NWW5, NWWS7
WW7 / NWW7
WW7B, WWS10 / NWW7B, NWWS10
WW10 / NWW10
MWW1 / NMWW1
MWW3 / NMWW3
MWW5 / NMWW5
MWW10 / NMWW10
0.312
7.92
0.375
9.53
0.420
10.67
0.370
9.40
0.550
13.97
0.560
14.22
0.500
12.70
0.700
17.78
0.875
22.23
1.000
25.40
1.200
30.48
1.780
45.21
0.385
9.78
0.560
14.22
0.925
23.50
1.965
49.91
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.062
1.57
0.110
2.79
0.110
2.79
0.110
2.79
0.156
3.96
0.156
3.96
0.187
4.75
0.218
5.54
0.270
6.86
0.312
7.92
0.312
7.92
0.312
7.92
0.375
9.53
0.135
3.43
0.205
5.21
0.330
8.38
0.480
12.19
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.031
0.79
0.025
0.64
0.025
0.64
0.025
0.64
0.032
0.81
0.032
0.81
0.032
0.81
0.032
0.81
0.036
0.91
0.036
0.91
0.036
0.91
0.036
0.91
0.040
1.02
0.032
0.81
0.032
0.81
0.036
0.91
0.040
1.02
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
±
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
0.002 (2)
0.05 (2)
0.002
0.05
0.002
0.05
0.002
0.05
0.002
0.05
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
1.500 typ.
38.10 typ.
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
inches
mm
(1) See "Resistor Packaging Specification Document" for lead length dimension for tape and reel packaged product
(2) Available in 0.036" / 0.91mm
Rev Date: 08/20/2012
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
www.seielect.com
marketing@seielect.com
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