WW122KWW1

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Rev Date: 08/07/2014 1 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 Series General Purpose and Precision Wirewound Resistor Stackpole Electronics, Inc. Resistive Product Solutions WW12 - 0.4 W 0.5 W 5 - 2K 3 - 2K 3 - 2K 5 - 2K WW1 - 1 W 1.1 W 2 - 3K 2 - 3K 2 - 3K 2 - 3K WW1A RW-70 1 W 1.3 W 1 - 5K 1 - 5K 1 - 5K 1 - 5K WW3 RW-79 3 W 3.2 W 1 - 22K 0.5 - 22K 0.5 - 22K 0.5 - 22K WWS3 - 3 W 3.2 W 3 - 10K 1 - 10K 1 - 10K 1 - 10K WW3A - 3 W 3.4 W 1 - 30K 0.5 - 30K 0.5 - 30K 0.5 - 30K WW4 - 4 W 4.3 W 1 - 40K 0.5 - 40K 0.5 - 40K 0.5 - 40K WWS4 RW-79 4 W 4.3 W 1 - 22K 0.5 - 22K 0.5 - 22K 0.5 - 22K WW5 RW-67, RW-74 5 W 5.1 W 1 - 50K 0.5 - 50K 0.5 - 50K 0.5 - 50K WWS5 - 5 W 5.1 W 1 - 40K 0.5 - 40K 0.5 - 40K 0.5 - 40K WW7B - 7 W 7.7 W 1 - 70K 0.5 - 70K 0.5 - 70K 0.5 - 70K WW10 RW-78 10 W 11 W 1 - 100K 0.5 - 100K 0.5 - 100K 0.5 - 100K WWS10 - 10 W 11 W 1 - 70K 0.5 - 70K 0.5 - 70K 0.5 - 70K NWW12 - 0.4 W 0.5 W 10 - 1K 10 - 1K 10 - 1K 10 - 1K NWW2 RW-69 1.5 W 2.1 W 2 - 5K 2 - 5K 1 - 5K 1 - 5K NWWS2 - 2.5 W 2.6 W 2 - 5K 2 - 5K 1 - 5K 1 - 5K NWW2A - 2.5 W 2.6 W 2 - 5K 2 - 5K 1 - 5K 1 - 5K NWW3 RW-79 3 W 3.2 W 2 - 11K 2 - 11K 1 - 11K 1 - 11K NWWS3 - 3 W 3.2 W 5 - 5K 5 - 5K 3 - 5K 3 - 5K NWW3A - 3 W 3.4 W 2 - 15K 2 - 15K 1 - 15K 1 - 15K NWW4 - 4 W 4.3 W 2 - 20K 2 - 20K 1 - 20K 1 - 20K NWWS4 RW-79 4 W 4.3 W 2 - 11K 2 - 11K 1 - 11K 1 - 11K NWW5 RW-67, RW-74 5 W 5.1 W 2 - 25K 2 - 25K 1 - 25K 1 - 25K NWWS5 - 5 W 5.1 W 2 - 20K 2 - 20K 1 - 20K 1 - 20K NWW7 - 6.5 W 7.2 W 2 - 35K 2 - 35K 1 - 35K 1 - 35K NWWS7 RW-67, RW-74 6.5 W 7.2 W 2 - 25K 2 - 25K 1 - 25K 1 - 25K NWW7B - 7 W 7.7 W 2 - 35K 2 - 35K 1 - 35K 1 - 35K NWW10 RW-78 10 W 11 W 2 - 50K 2 - 50K 1 - 50K 1 - 50K NWWS10 - 10 W 11 W 2 - 35K 2 - 35K 1 - 35K 1 - 35K MWW1 RW-70 1 W 1.3 W 5 - 2K 5 - 2K 5 - 2K 5 - 2K MWW3 RW-79 3 W 3.2 W 3 - 20K 3 - 20K 3 - 20K 3 - 20K MWW5 RW-67, RW-74 5 W 5.5 W 2 - 40K 2 - 40K 2 - 40K 2 - 40K MWW10 RW-68, RW-74 10 W 11 W 2 - 80K 2 - 80K 2 - 80K 2 - 80K NMWW1 RW-70 1 W 1.3 W 10 - 1K 10 - 1K 5 - 1K 5 - 1K NMWW3 RW-79 3 W 3.2 W 5 - 10K 5 - 10K 3 - 10K 3 - 10K NMWW5 RW-67, RW-74 5 W 5.5 W 3 - 20K 3 - 20K 2 - 20K 2 - 20K NMWW10 RW-68, RW-74 10 W 11 W 3 - 40K 3 - 40K 2 - 40K 2 - 40K (*) Other resistance values available - contact factory for details. 1% 5% Ohmic Range (Ω) and Tolerance (*)Type / Code MIL-R-26 Ref. < 1Ω = ±90ppm/ºC 1Ω to 10Ω = ± 50ppm/ºC >10Ω = ±20ppm/ºC Power Rating (W) @ 125ºC Power Rating (W) @ 70ºC TCR (ppm/ºC) 0.1% 0.5% Features:

• 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
• Complete welded terminations
• Tinned copper leads
• Available in non-inductive styles
• High temperature silicone coating
• RoHS compliant
• Higher operating temperatures available
• Bulk packaging available - contact Stackpole for package quantities Electrical Specifications

Rev Date: 08/07/2014 2 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 Series General Purpose and Precision Wirewound Resistor Stackpole Electronics, Inc. Resistive Product Solutions (1) See "Resistor Packaging Specification Document" for lead length dimension for tape and reel packaged product (2) Available in 0.036" / 0.91mm NMWW1 NMWW3 NMWW5 NMWW10 NWW5, NWWS7 NWW7 NWW7B, NWWS10 NWW10 NWW2A NWW3, NWWS4 NWW3A NWW4, NWWS5 NWW12 NWW1, NWWS2 NWW1A NWW2, NWWS3 WW12 WW3, WWS4 WW3A WW4, WWS5 WW1, WWS2 WW1A WW2, WWS3 WW2A MWW10 WW5, WWS7 WW7 WW7B, WWS10 WW10 MWW1 MWW3 MWW5 A B C UnitType / Code D (Bulk) (1) Test Test Condition Result Moisture Resistance 1000 hours, 95% R.H., 40ºC 1% max Load Life 1000 hours, cycled power 1.5 hours ON, 0.5 hours OFF, 25ºC 1% Temperature Cycling 5 cycles, -55ºC to 200ºC 0.5% Short Time Overload 5 times rated power for 5 seconds 1% Dielectric Withstand Voltage Resistor leads are grounded and high potential probe is touched to the resistor body 500V for (N)WW12, 1, 1A and 2S. 1000V for all others Operating Temperature Range: -55ºC to +350ºC Mechanical Specifications Performance Characteristics

Rev Date: 08/07/2014 3 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 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 0 300 350 400 Ambient Temperature (ºC) 350ºC -60 0 50 100 150 200 250 Percent Rated Power (%) 100 -55ºC 100ºC WW Quantity WWS 0.5 W MWW 1.1 W NWW 1.3 W 2.1 W 2.6 W 2.6 W 3.2 W 3.2 W 3.4 W 4.3 W 4.3 W 5.1 W 5.1 W 7.2 W 7.2 W 7.7 W 11.0 W 11.0 W 1.3 W 3.2 W 5.5 W 11.0 W WW3 / NWW3 WWS3 / NWWS3 WW5 / NWW5 WWS5 / NWWS5 WW7B / NWW7B 6.5W 2.5W 6.5W 2.5W MWW5 / NMWW5 WW7 / NWW7 WWS7 / NWWS7 MWW10 / NMWW10 WW10 / NWW10 WWS10 / NWWS10 MWW1 / NMWW1 MWW3 / NMWW3 WWS4 / NWWS4 Mini Non-Inductive Non-Inductive NWWS WW3A / NWW3A WW4 / NWW4

10 Kohm = 10K0

decimal holder. 0.5% Tol 0.1% T 2,500 WW12 / NWW12WW12 / NWW12 WW1 / NWW1 WW2 / NWW2 WWS2 / NWWS2 WW1A / NWW1A 0.5 ohm = R500 J Type/CodeStandard MWW10 / NMWW10 WW10 / NWW10 WW2 / NWW2 WWS3 / NWWS3 WW2A / NWW2A WW3 / NWW3 WWS7 / NWWS7 WW7 / NWW7 WWS10 / NWWS10 11" Tape and Reel MWW3 / NMWW3 WW1 / NWW1 WWS2 / NWWS2 WW1A / NWW1A MWW1 / NMWW1 500 250 WW7B / NWW7B MWW5 / NMWW5 Product Series Description Size Resistance ValueTolerance Code Packaging Mini Molded 10W 10W WWS4 / NWWS4 WW2A / NWW2A 10W WW3A / NWW3A WW4 / NWW4 WWS5 / NWWS5 WW5 / NWW5 1 ohm = 1R00 Power Rating @ 70ºC 2,0003W @ 125ºC 0.4W 1.5W Code B D F Power Derating Curve: How to Order