WW/MWW Series
Stackpole Electronics, Inc.
General Purpose and Precision Wirewound
Features:
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Resistive Product Solutions
WWS offers miniature size at higher power rating
High performance for low cost
High power to size ratio
MWW – Completely molded construction with welded
terminations tested to MIL-R-39007
Complete welded terminations
Tinned copper leads
Available in non-inductive styles
High temperature silicone coating
RoHS compliant / lead-free
Electrical Specifications
Dielectric
Power Rating (Watts)
Strength
(V)
@ 125ºC (U) @ 25ºC (V)
Type / Code
MIL-R-26 Ref.
WW H
-
500V
0.4W
0.6W
WW 1 / WWS 2
-
500V
1W
1.2W
WW 1A
RW-70
500V
1W
1.5W
WW 2 / WWS 3
RW-69
1,000V
1.5W
Ohmic Range(Ω) and Tolerance(1)
0.1%, 0.5%, 1% & 5%
Resitance Temperature
Coefficient
2.5W
Standard
0.1 - 1K
0.1 - 3K
0.1 - 1.5K
0.1 - 7K
0.1 - 3.5K
0.1 - 10K
< 1Ω = ±90ppm/ºC
Non-Inductive
0.1 - 2K
0.1 - 5K
WW 2A
-
1,000V
2.5W
3W
0.1 - 15K
0.1 - 7.5K
WW 3 / WWS 4
RW-79
1,000V
3W
3.7W
0.1 - 22K
0.1 - 11K
WW 3A
-
1,000V
3W
4W
0.1 - 30K
0.1 - 15K
WW 4 / WWS 5
-
1,000V
4W
5W
0.1 - 40K
0.1 - 20K
WW 5 / WWS 7
RW-67, RW-74
1,000V
5W
6W
0.1 - 50K
0.1 - 25K
WW 7
-
1,000V
6.5W
8.5W
0.1 - 70K
0.1 - 35K
1Ω to 10Ω = ±50ppmºC
WW 7B / WWS 10
-
1,000V
7W
9W
0.1 - 100K
0.1 - 50K
WW 10
RW-78
1,000V
10W
13W
0.1 - 150K
0.1 - 75K
MWW 1
RW-70
1,000V
1W
1.5W
0.1 - 2K
-
MWW 3
RW-79
1,000V
3W
3.75W
0.1 - 20K
-
MWW 5
RW-67, RW-74
1,000V
5W
6.5W
0.1 - 40K
-
MWW 10
RW-68, RW-74
1,000V
10W
13W
0.1 - 150K
-
>10Ω = ±20ppm/ºC
(1) Lesser of√PR or maximum working voltage
How to Order
SEI Type
Nominal
Resistance
Tolerance
Packaging
WW
Type
WW
WWS
MWW
NWW
Code
1
10K
1%
R
Description
Standard
Mini
Molded
Non-Inductive
Code
1
4
1A
5
2
7
2A
7B
10
3
3A
H
Tolerance
0.1%
0.5%
1%
5%
Rev Date: 04/23/2010
This specification may be changed at any time without prior notice
Please confirm technical specifications before you order and/or use.
Types
WW H, WW 1, WWS2, WW 1A, MWW 1
WW 2, WWS3, WW 2A, WW 3, WWS4,
WW 4, WWS5, MWW 3
WW 3A
WW 5, WWS7, WW 7, WW 7B, WWS10,
WW 10, MWW 5
WW 10, MWW 10
79
Qty
2,500
Description
Code
11" Flange
R
2,000
5,000
500
250
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marketing@seielect.com
