WH/WN Series Miniature Molded Wirewound FeatureS WH precision series WN Ar yton Perr y winding Non-Inductive series: Inductance <1nH at 1MHZ test, Designed to meet MIL-R-26F, MIL-STD-202 stan- dard requirements Manufacturing process -Wire winding/ Spot Welding- by Computer Numerical Control (CNC) machine tools to ensure consistency of product quality. Encapsulated by epoxy molding compound Advanced IC encapsulation mold/die technologies SerieS SPeciFicatiONS cHaracteriSticS Power Resistance CeramTec Rubalit 85% alumina Ceramic Core Rating Range Weight End Caps Stainless steel, precision formed Type (watts) () (g/1000pc) Leads Copper wire,100% Sn (lead free) WHA 0.5 0.100 - 1.0K 216 coated WNA 0.100 - 250 WHB 1 0.100 - 4.0K 296 Resistance Wire ISAOHM wire TC 20ppm/C WNB 0.100 - 1.0K Encapsulation SUMICON 1100/1200 Epoxy molding WHC 2 0.10 - 8.0K 712 compound for IC encapsulation WNC 0.10 - 2.0K Standard Tolerance D (0.5%), F (1.0%), J (5.0%) WHD 3 0.10 - 25K 1160 Temperature 90 for 0.100-0.99, 50 for WND 0.10 - 5.0K Coefficient (ppm/C) 1.00-10.00, 20 for >10.00 WHE 5 0.10 - 50K 2920 1/2 WNE 0.10 - 10K Maximum Working (PxR) Voltage Derating Linearly from 100% +70C to 0% +150C. Operating Temp -55C to +150C dimeNSiONS 0.984 / 25 LD d Packaging Tape Reel Pc/ Type Wattage L D d Width Pitch Diam. reel WH/NA 0.5 5.08 / 0.200 2.54 / 0.100 0.60 / 0.024 64 / 2.520 5.0 / 0.197 290 / 11.41 1000 WH/NB 1 7.00 / 0.276 3.30 / 0.130 0.60 / 0.024 64 / 2.520 5.0 / 0.197 290 / 11.41 1000 WH/NC 2 11.4 / 0.450 4.57 / 0.180 0.80 / 0.031 64 / 2.520 10 / 0.393 290 / 11.41 1000 WH/ND 3 13.54 / 0.530 5.50 / 0.216 0.80 / 0.031 84 / 3.307 10 / 0.393 290 / 11.41 500 WH/NE 5 20.00 / 0.790 7.50 / 0.295 1.00 / 0.039 84 / 3.307 10 / 0.393 290 / 11.41 500 (continued) 100 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.comWH/WN Series Miniature Molded Wirewound PerFOrmaNce cHaracteriSticS Test Conditions of Test Performance Environmental chamber, -55C +0C, -3C to 150C +3C, -0C, (1.0% + 0.5m)R Thermal shock 5 cycles, minimum 15 min. at each extreme Short-time overload Overload voltage 5x rated wattage for 5 sec. (0.5% + 0.5m)R Solderability Bath temp. 260C 5, immersion time 5 sec. 0.5, JIS C 5201 >90% of contact face 4.18 covered new solder Resistance to solder Bath temp. 260C 5, immersion time 5 sec. 0.5, JIS C 5201 (0.5% + 0.5m)R heat 4.18 Dielectric withstanding Magnitude of test voltage >500 volts rms. duration 1 min. Pass voltage 9 Insulation resistance Magnitude of test voltage 500 volts rms. 10% duration 1 min. >10 Exposed to an ambient temperature of 175C +5/-0 for 250 8 (1.0% + 0.5m)R High Temperature hours Exposure Low Temperature At a temperature of -65C 2 for a period of 24 hours 4 (0.5% + 0.5m)R Storage Life Test temp. at 70C 2, rated DC continuous working voltage (2.0% + 0.5m)R applied, 1.5 hours on and 0.5 hours off, 1000 hours HOW tO Order H = Inductive Standard part numbers N = Non Inductive RoHS compliant Wattage: 0.5 0.5 1.0 1.0 2.0 2.0 3.0 3.0 5.0 5.0 Series: WHA WNA WHB WNB WHC WNC WHD WND WHE WNE Ohms Series Power Ohms Tolerance Package T = Tape A = 0.5 F = 1% 0.1 WHAR10FET WNAR10FET WHBR10FET WNBR10FET WHCR10FET WNCR10FET WHDR10FET WNDR10FET WHER10FET WNER10FET B =1 J = 5% 0.25 WHAR25FET WNAR25FET WHBR25FET WNBR25FET WHCR25FET WNCR25FET C = 2 D = 0.5% 0.5 WHAR50FET WNAR50FET WHBR50FET WNBR50FET WHCR50FET WNCR50FET WHDR50FET WNDR50FET WHER50FET WNER50FET D = 3 0.75 WHAR75FET WNAR75FET WHBR75FET WNBR75FET WHCR75FET WNCR75FET E = 5 1 WHA1R0FET WNA1R0FET WHB1R0FET WNB1R0FET WHC1R0FET WNC1R0FET WHD1R0FET WND1R0FET WHE1R0FET WNE1R0FET 2 WHA2R0FET WNA2R0FET WHB2R0FET WNB2R0FET WHC2R0FET WNC2R0FET 4 WHA4R0FET WNA4R0FET WHB4R0FET WNB4R0FET WHC4R0FET WNC4R0FET 5 WHA5R0FET WNA5R0FET WHB5R0FET WNB5R0FET WHC5R0FET WNC5R0FET WHD5R0FET WND5R0FET WHE5R0FET WNE5R0FET 10 WHA10RFET WNA10RFET WHB10RFET WNB10RFET WHC10RFET WNC10RFET WHD10RFET WND10RFET WHE10RFET WNE10RFET 15 WHA15RFET WNA15RFET WHB15RFET WNB15RFET WHC15RFET WNC15RFET WHD15RFET WND15RFET WHE15RFET WNE15RFET 25 WHA25RFET WNA25RFET WHB25RFET WNB25RFET WHC25RFET WNC25RFET 51 WHA51RFET WNA51RFET WHB51RFET WNB51RFET WHC51RFET WNC51RFET 75 WHA75RFET WNA75RFET WHB75RFET WNB75RFET WHC75RFET WNC75RFET 100 WHA100FET WNA100FET WHB100FET WNB100FET WHC100FET WNC100FET WHD100FET WND100FET WHE100FET WNE100FET 150 WHA150FET WNA150FET WHB150FET WNB150FET WHC150FET WNC150FET WHE150FET WNE150FET 200 WHA200FET WNA200FET WHB200FET WNB200FET WHC200FET WNC200FET 250 WHA250FET WNA250FET WHB250FET WNB250FET WHC250FET WNC250FET WHD250FET WND250FET WHE250FET WNE250FET 330 WHA330FET WHB330FET WNB330FET WHC330FET WNC330FET 470 WHA470FET WHB470FET WNB470FET WHC470FET WNC470FET 560 WHA560FET WHB560FET WNB560FET WHC560FET WNC560FET WHD560FET WND560FET WHE560FET WNE560FET 750 WHA750FET WHB750FET WNB750FET WHC750FET WNC750FET 1K WHA1K0FET WHB1K0FET WNB1K0FET WHC1K0FET WNC1K0FET WHD1K0FET WND1K0FET WHE1K0FET WNE1K0FET 2.5K WHB2K5FET WHC2K5FET WND2K5FET 5K WHD5K0FET WHE5K0FET WNE5K0FET 10K WHD10KFET WHE10KFET WNE10KFET 25K WHE25KFET rev 9/20- 1 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info ohmite.com 101