Rev Date: 11/29/2021

7

www.seielect.com

This specification may be changed at any time without prior notice.

marketing@seielect.com

Please confirm technical specifications before you order and/or use.

WW / MWW / NWW / WWS Series

General Purpose and Precision Wirewound Resistor

Stackpole Electronics, Inc.

Resistive Product Solutions

1

2

3

4

5

6

7

8

9

W

W

1

F

T

1

K

0

0

“Conflict Metals” Commitment

We at Stackpole Electronics, Inc. are joined with our industry in opposing the use of metals mined in the “conflict region” of the eastern

Democratic Republic of the Congo (DRC) in our products. Recognizing that the supply chain for metals used in the electronics industry

is very complex, we work closely with our own suppliers to verify to the extent possible that the materials and products we supply do

not contain metals sourced from this conflict region. As such, we are in compliance with the requirements of Dodd-Frank Act regarding

Conflict Minerals.

Compliance to “REACH”

We certify that all passive components supplied by Stackpole Electronics, Inc. are SVHC (Substances of Very High Concern) free and

compliant with the requirements of EU Directive 1907/2006/EC, “The Registration, Evaluation, Authorization and Restriction of

Chemicals”, otherwise referred to as REACH. Contact us for complete list of REACH Substance Candidate List.

Environmental Policy

It is the policy of Stackpole Electronics, Inc. (SEI) to protect the environment in all localities in which we operate. We continually strive

to improve our effect on the environment. We observe all applicable laws and regulations regarding the protection of our environment

and all requests related to the environment to which we have agreed. We are committed to the prevention of all forms of pollution.

How to Order

Resistance Value

Code

Description

@ 125ºC @ 70ºC Code

Tol

Code Description

Size

Qty

WW

Standard

WW12 / NWW12

0.4

0.5

B

0.1%

WW12 / NWW12

WWS

Mini

WW1 / NWW1

1

1.1

D

0.5%

WW1 / NWW1

MWW

Molded

WW1A / NWW1A

1

1.3

F

1%

WWS2 / NWWS2

NWW

Non-Inductive

WW2 / NWW2

1.5

2.1

J

5%

WW1A / NWW1A

Mini

WWS2 / NWWS2

2.5

2.6

MWW1 / NMWW1

0.5 ohm = R500

Non-Inductive

WW2A / NWW2A

2.5

2.6

WW2 / NWW2

1 ohm = 1R00

WW3 / NWW3

3

3.2

WWS3 / NWWS3

10 Kohm = 10K0

WWS3 / NWWS3

3

3.2

WW2A / NWW2A

WW3A / NWW3A

3

3.4

WW3 / NWW3

WW4 / NWW4

4

4.3

WWS4 / NWWS4

WWS4 / NWWS4

4

4.3

MWW3 / NMWW3

WW5 / NWW5

5

5.1

WW3A / NWW3A

WWS5 / NWWS5

5

5.1

WW4 / NWW4

WW7 / NWW7

6.5

7.2

WWS5 / NWWS5

WWS7 / NWWS7

6.5

7.2

WW5 / NWW5

WW7B / NWW7B

7

7.7

WWS7 / NWWS7

WW10 / NWW10

10

11.0

WW7 / NWW7

WWS10 / NWWS10

10

11.0

WW7B / NWW7B

MWW1 / NMWW1

1

1.3

WWS10 / NWWS10

MWW3 / NMWW3

3

3.2

MWW5 / NMWW5

MWW5 / NMWW5

5

5.5

WW10 / NWW10

MWW10 / NMWW10

10

11.0

MWW10 / NMWW10

Four characters

with the multiplier

used as the

decimal holder.

T

2500

Type / Code

500

250

Contact Stackpole for

package quantities.

B

Bulk

Product Series

Tolerance

Packaging

Power Rating (W)

2000

11" Tape

and Reel

NMWW

Non-Inductive

Molded

NWWS