WW/MWW/NWW Series Stackpole Electronics, Inc. General Purpose and Precision Wirewound Resistor Features: * * * * * * * * * * * 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 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 Type / Code MIL-R-26 Ref. Dielectric Strength (V) (1) Power Rating (Watts) @ 125C Power Rating (Watts) @ 70C 0.4W 1W 1W 1.5W 2.5W 2.5W 3W 3W 3W 4W 4W 5W 5W 6.5W 6.5W 7W 10W 10W 1W 3W 5W 10W 0.5 W 1.1 W 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 WW12 / NWW12 500V WW1 / NWW1 500V WW1A / NWW1A RW-70 500V WW2 / NWW2 RW-69 1,000V WWS2 / NWWS2 500V WW2A / NWW2A 1,000V WW3 / NWW3 RW-79 1,000V WWS3 / NWWS3 1,000V WW3A / NWW3A 1,000V WW4 / NWW4 1,000V WWS4 / NWWS4 RW-79 1,000V WW5 / NWW5 RW-67, RW-74 1,000V WWS5 / NWWS5 1,000V WW7 / NWW7 1,000V WWS7 / NWWS7 RW-67, RW-74 1,000V WW7B / NWW7B 1,000V WW10 / NWW10 RW-78 1,000V WWS10 / NWWS10 1,000V MWW1 / NMWW1 RW-70 1,000V MWW3 / NMWW3 RW-79 1,000V MWW5 / NMWW5 RW-67, RW-74 1,000V MWW10 / NMWW10 RW-68, RW-74 1,000V (1) Lesser of PR or maximum working voltage TCR (ppm/C) < 1 = 90ppm/C 1 to 10 = 50ppmC >10 = 20ppm/C Ohmic Range() and Tolerance 0.1%, 0.5%, 1% & 5% Standard Non-Inductive 0.1 - 2K 0.1 - 1K 0.1 - 3K 0.1 - 1.5K 0.1 - 7K 0.1 - 3.5K 0.1 - 10K 0.1 - 5K 0.1 - 3K 0.1 - 1.5K 0.1 - 15K 0.1 - 7.5K 0.1 - 22K 0.1 - 11K 0.1 - 10K 0.1 - 5K 0.1 - 30K 0.1 - 15K 0.1 - 40K 0.1 - 20K 0.1 - 22K 0.1 - 11K 0.1 - 50K 0.1 - 25K 0.1 - 40K 0.1 - 20K 0.1 - 70K 0.1 - 35K 0.1 - 50K 0.1 - 25K 0.1 - 100K 0.1 - 50K 0.1 - 150K 0.1 - 75K 0.1 - 100K 0.1 - 50K 0.1 - 2K 0.1 - 20K 0.1 - 40K 0.1 - 150K Performance Characteristics Test Test Condition Result Moisture Resistance 1000 hours, 95% R.H., 40C 1000 hours, cycled power 1.5 hours ON, 0.5 hours OFF, 25C 5 cycles, -55C to 200C 5 times rated power for 5 seconds 1% max Load Life Temperature Cycling Short Time Overload 1% 0.5% 1% Operating Temperature Range: -55C to +350C 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. 1 www.seielect.com marketing@seielect.com WW/MWW/NWW Series Stackpole Electronics, Inc. General Purpose and Precision Wirewound Resistor Power Derating Curve: Resistive Product Solutions Percent Rated Power (%) 120 100 80 60 40 20 25 75 125 175 225 275 325 350 Ambient Temperature (C) Mechanical Specifications Type / Code 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 A 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 B 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 C 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 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 (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 WW/MWW/NWW Series Stackpole Electronics, Inc. General Purpose and Precision Wirewound Resistor Resistive Product Solutions How to Order Product Series Standard WW Mini WWS Molded MWW NWW Non-Inductive Mini NWWS Non-Inductive 1 2 3 4 5 6 7 8 9 W W 1 F T 1 K 0 0 Type/Code WW12 / NWW12 WW1 / NWW1 WW1A / NWW1A WW2 / NWW2 WWS2 / NWWS2 WW2A / NWW2A WW3 / NWW3 WWS3 / NWWS3 WW3A / NWW3A WW4 / NWW4 WWS4 / NWWS4 WW5 / NWW5 WWS5 / NWWS5 WW7 / NWW7 WWS7 / NWWS7 WW7B / NWW7B WW10 / NWW10 WWS10 / NWWS10 MWW1 / NMWW1 MWW3 / NMWW3 MWW5 / NMWW5 MWW10 / NMWW10 Power Rating @ 125C @ 70C 0.4W 0.5 W 1W 1.1 W 1W 1.3 W 1.5W 2.1 W 2.5W 2.6 W 2.5W 2.6 W 3W 3.2 W 3W 3.2 W 3W 3.4 W 4W 4.3 W 4W 4.3 W 5W 5.1 W 5W 5.1 W 6.5W 7.2 W 6.5W 7.2 W 7W 7.7 W 10W 11.0 W 10W 11.0 W 1W 1.3 W 3W 3.2 W 5W 5.5 W 10W 11.0 W Tolerance Code Tol B 0.1% D 0.5% F 1% J 5% Code T Description 11" Tape and Reel Packaging Size Quantity WW12 / NWW12 WW1 / NWW1 2,500 WWS2 / NWWS2 WW1A / NWW1A MWW1 / NMWW1 WW2 / NWW2 WWS3 / NWWS3 WW2A / NWW2A 2,000 WW3 / NWW3 WWS4 / NWWS4 MWW3 / NMWW3 WW3A / NWW3A WW4 / NWW4 WWS5 / NWWS5 WW5 / NWW5 WWS7 / NWWS7 500 WW7 / NWW7 WW7B / NWW7B WWS10 / NWWS10 MWW5 / NMWW5 WW10 / NWW10 250 MWW10 / NMWW10 Resistance Value Four characters with the multiplier used as the decimal holder. 0.1 ohm = R100 2 Kohm = 2K00 Legacy Part Number (before January 3, 2011): SEI Type Code Nominal Resistance Tolerance Packaging WW 1 10K 1% R Type WW WWS MWW NWW NWWS Description Standard Mini Molded Non-Inductive Mini Non-Inductive Tolerance 0.1% 0.5% 1% 5% 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. Types WW12, NWW12, WW1, NWW1, WWS2, NWWS2 WW1A, NWW1A, MWW1, NMWW1 WW2, NWW2, WWS3, NWWS3, WW2A, NWW2A WW3, NWW3, WWS4, NWWS4, MWW3, NMWW3 WW3A, NWW3A, WW4, NWW4, WWS5, NWWS5 WW5, NWW5, WWS7, NWWS7, WW7, NWW7 WW7B, NWW7B, WWS10, NWWS10 MWW5, NMWW5 WW10, NWW10, MWW10, NMWW10 3 Qty Description Code 11" reel tape R 2,500 2,000 500 250 www.seielect.com marketing@seielect.com