WW/MWW/NWW Series Stackpole Electronics, Inc. General Purpose and Precision Wirewound Resistor Resistive Product Solutions 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 Ohmic Range( ) and Tolerance Dielectric Power Rating Power Rating Type / Code MIL-R-26 Ref. Strength (V) (Watts) (Watts) TCR (ppm/C) 0.1%, 0.5%, 1% & 5% (1) 125C 70C Standard Non-Inductive WW12 / NWW12 - 500V 0.4W 0.5 W 0.1 - 2K 0.1 - 1K WW1/NWW1 - 500V 1W 1.1W 0.1-3K 0.1-1.5K WW1A/NWW1A RW-70 500V 1W 1.3W 0.1-7K 0.1-3.5K < 1 = 90ppm/C WW2 / NWW2 RW-69 1,000V 1.5W 2.1 W 0.1 - 10K 0.1 - 5K WWS2 / NWWS2 - 500V 2.5W 2.6 W 0.1 - 3K 0.1 - 1.5K WW2A / NWW2A - 1,000V 2.5W 2.6 W 0.1 - 15K 0.1 - 7.5K WW3 / NWW3 RW-79 1,000V 3W 3.2 W 0.1 - 22K 0.1 - 11K WWS3 / NWWS3 - 1,000V 3W 3.2 W 0.1 - 10K 0.1 - 5K WW3A / NWW3A - 1,000V 3W 3.4 W 0.1 - 30K 0.1 - 15K WW4 / NWW4 - 1,000V 4W 4.3 W 0.1 - 40K 0.1 - 20K WWS4 / NWWS4 RW-79 1,000V 4W 4.3 W 0.1 - 22K 0.1 - 11K 1 to 10 = 50ppmC WW5 / NWW5 RW-67, RW-74 1,000V 5W 5.1 W 0.1 - 50K 0.1 - 25K WWS5 / NWWS5 - 1,000V 5W 5.1 W 0.1 - 40K 0.1 - 20K WW7 / NWW7 - 1,000V 6.5W 7.2 W 0.1 - 70K 0.1 - 35K WWS7 / NWWS7 RW-67, RW-74 1,000V 6.5W 7.2 W 0.1 - 50K 0.1 - 25K WW7B / NWW7B - 1,000V 7W 7.7 W 0.1 - 100K 0.1 - 50K WW10 / NWW10 RW-78 1,000V 10W 11.0 W 0.1 - 150K 0.1 - 75K WWS10 / NWWS10 - 1,000V 10W 11.0 W 0.1 - 100K 0.1 - 50K MWW1/NMWW1 RW-70 1,000V 1W 1.3W >10 = 20ppm/C 0.1-2K - MWW3 / NMWW3 RW-79 1,000V 3W 3.2 W 0.1 - 20K - MWW5 / NMWW5 RW-67, RW-74 1,000V 5W 5.5 W 0.1 - 40K - - MWW10 / NMWW10 RW-68, RW-74 1,000V 10W 11.0 W 0.1 - 150K (1) Lesser of PR or maximum working voltage Performance Characteristics Test Test Condition Result Moisture Resistance 1000 hours, 95% R.H., 40C 1% max 1000 hours, Load Life 1% cycled power 1.5 hours ON, 0.5 hours OFF, 25C Temperature Cycling 5 cycles, -55C to 200C 0.5% Short Time Overload 5 times rated power for 5 seconds 1% Operating Temperature Range: -55C to +350C Rev Date: 08/20/2012 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 Stackpole Electronics, Inc. General Purpose and Precision Wirewound Resistor Resistive Product Solutions 120 Power Derating Curve: 100 80 60 40 20 25 75 125 175 225 275 325 350 Ambient Temperature (C) Mechanical Specifications D Type / Code AB C Unit (Bulk) (1) 0.312 0.062 0.110 0.031 0.025 0.002 1.500 typ. inches WW12 / NWW12 7.92 1.57 2.79 0.79 0.64 0.05 38.10 typ. mm 0.375 0.062 0.110 0.031 0.025 0.002 1.500 typ. inches WW1, WWS2 / NWW1, NWWS2 9.53 1.57 2.79 0.79 0.64 0.05 38.10 typ. mm 0.420 0.062 0.110 0.031 0.025 0.002 1.500 typ. inches WW1A / NWW1A 10.67 1.57 2.79 0.79 0.64 0.05 38.10 typ. mm 0.370 0.062 0.156 0.031 0.032 0.002 1.500 typ. inches WW2, WWS3 / NWW2, NWWS3 9.40 1.57 3.96 0.79 0.81 0.05 38.10 typ. mm 0.550 0.062 0.156 0.031 0.032 0.002 1.500 typ. inches WW2A / NWW2A 13.97 1.57 3.96 0.79 0.81 0.05 38.10 typ. mm 0.560 0.062 0.187 0.031 0.032 0.002 1.500 typ. inches WW3, WWS4 / NWW3, NWWS4 14.22 1.57 4.75 0.79 0.81 0.05 38.10 typ. mm 0.500 0.062 0.218 0.031 0.032 0.002 1.500 typ. inches WW3A / NWW3A 12.70 1.57 5.54 0.79 0.81 0.05 38.10 typ. mm 0.700 0.062 0.270 0.031 0.036 0.002 1.500 typ. inches WW4, WWS5 / NWW4, NWWS5 17.78 1.57 6.86 0.79 0.91 0.05 38.10 typ. mm 0.875 0.062 0.312 0.031 0.036 0.002 1.500 typ. inches WW5, WWS7 / NWW5, NWWS7 22.23 1.57 7.92 0.79 0.91 0.05 38.10 typ. mm 1.000 0.062 0.312 0.031 0.036 0.002 1.500 typ. inches WW7 / NWW7 25.40 1.57 7.92 0.79 0.91 0.05 38.10 typ. mm 1.200 0.062 0.312 0.031 0.036 0.002 1.500 typ. inches WW7B, WWS10 / NWW7B, NWWS10 30.48 1.57 7.92 0.79 0.91 0.05 38.10 typ. mm 1.780 0.062 0.375 0.031 0.040 0.002 (2) 1.500 typ. inches WW10 / NWW10 45.21 1.57 9.53 0.79 1.02 0.05 (2) 38.10 typ. mm 0.385 0.062 0.135 0.031 0.032 0.002 1.500 typ. inches MWW1 / NMWW1 9.78 1.57 3.43 0.79 0.81 0.05 38.10 typ. mm 0.560 0.062 0.205 0.031 0.032 0.002 1.500 typ. inches MWW3 / NMWW3 14.22 1.57 5.21 0.79 0.81 0.05 38.10 typ. mm 0.925 0.062 0.330 0.031 0.036 0.002 1.500 typ. inches MWW5 / NMWW5 23.50 1.57 8.38 0.79 0.91 0.05 38.10 typ. mm 1.965 0.062 0.480 0.031 0.040 0.002 1.500 typ. inches MWW10 / NMWW10 49.91 1.57 12.19 0.79 1.02 0.05 38.10 typ. mm (1) SeeResistor Packaging Specification Documen for lead length dimension for tape and reel packaged product (2) Available in 0.036 / 0.91mm Rev Date: 08/20/2012 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. Percent Rated Power (%)