WW/MWW/NWW Series
General Purpose and Precision Wirewound Resistor
Stackpole Electronics, Inc.
Resistive Product Solutions
Performance Characteristics
Test
Moisture Resistance
Load Life
Temperature Cycling
Short Time Overload
Dielectric Withstand Voltage
Test Condition
1000 hours, 95% R.H., 40ºC
1000 hours,
cycled power 1.5 hours ON, 0.5 hours OFF, 25ºC
5 cycles, -55ºC to 200ºC
5 times rated power for 5 seconds
Resistor leads are grounded and high potential probe is
touched to the resistor body
Operating Temperature Range: -55ºC to +350ºC
Result
1% max
1%
0.5%
1%
500V for (N)WW12, 1, 1A and 2S.
1000V for all others
Mechanical Specifications
Type / Code
AB
C
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 ± 0.062
7.92 ± 1.57
0.375 ± 0.062
9.53 ± 1.57
0.420 ± 0.062
10.67 ± 1.57
0.370 ± 0.062
9.40 ± 1.57
0.550 ± 0.062
13.97 ± 1.57
0.560 ± 0.062
14.22 ± 1.57
0.500 ± 0.062
12.70 ± 1.57
0.700 ± 0.062
17.78 ± 1.57
0.875 ± 0.062
22.23 ± 1.57
1.000 ± 0.062
25.40 ± 1.57
1.200 ± 0.062
30.48 ± 1.57
1.780 ± 0.062
45.21 ± 1.57
0.385 ± 0.062
9.78 ± 1.57
0.560 ± 0.062
14.22 ± 1.57
0.925 ± 0.062
23.50 ± 1.57
1.965 ± 0.062
49.91 ± 1.57
0.110 ± 0.031
2.79 ± 0.79
0.110 ± 0.031
2.79 ± 0.79
0.110 ± 0.031
2.79 ± 0.79
0.156 ± 0.031
3.96 ± 0.79
0.156 ± 0.031
3.96 ± 0.79
0.187 ± 0.031
4.75 ± 0.79
0.218 ± 0.031
5.54 ± 0.79
0.270 ± 0.031
6.86 ± 0.79
0.312 ± 0.031
7.92 ± 0.79
0.312 ± 0.031
7.92 ± 0.79
0.312 ± 0.031
7.92 ± 0.79
0.375 ± 0.031
9.53 ± 0.79
0.135 ± 0.031
3.43 ± 0.79
0.205 ± 0.031
5.21 ± 0.79
0.330 ± 0.031
8.38 ± 0.79
0.480 ± 0.031
12.19 ± 0.79
0.025 ± 0.002
0.64 ± 0.05
0.025 ± 0.002
0.64 ± 0.05
0.025 ± 0.002
0.64 ± 0.05
0.032 ± 0.002
0.81 ± 0.05
0.032 ± 0.002
0.81 ± 0.05
0.032 ± 0.002
0.81 ± 0.05
0.032 ± 0.002
0.81 ± 0.05
0.036 ± 0.002
0.91 ± 0.05
0.036 ± 0.002
0.91 ± 0.05
0.036 ± 0.002
0.91 ± 0.05
0.036 ± 0.002
0.91 ± 0.05
0.040 ± 0.002 (2)
1.02 ± 0.05 (2)
0.032 ± 0.002
0.81 ± 0.05
0.032 ± 0.002
0.81 ± 0.05
0.036 ± 0.002
0.91 ± 0.05
0.040 ± 0.002
1.02 ± 0.05
(1) See "Resistor Packaging Specification Document" for lead length dimension for tape and reel packaged product
(2) Available in 0.036" / 0.91mm
D
(Bulk) (1)
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.
Unit
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
Rev Date: 12/17/2014
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
2
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