resistors WK73 high power, wide terminal type flat chip resistors EU features * Wide-side termination (reverse-geometry) type flat chip resistor * High reliability and performance with T.C.R. 100 x 10-6/K, resistance tolerance 1% * Marking: Black protective coat * Products with lead-free terminations meet EU RoHS requirements. EU RoHS regulation is not intended for Pb-glass contained in electrode, resistor element and glass. * AEC-Q200 Qualified: 0612(2B), 1020(2H), 1218(2J), 1225(3A) dimensions and construction Type L c W t Inner Resistive Electrode Film d Solder Plating Ni Plating Protective Coating Ceramic Substrate Dimensions inches (mm) W c d L (Inch Size Code) c 2B (0612) .063.006 .126.006 .012.008 .018.006 (1.60.15) (3.20.2) (0.30.2) (0.450.15) 2H (1020) .098.006 .197.006 .016.008 (2.50.15) (5.00.15) (0.40.2) 2J (1218) .122.006 .181.006 .016.008 .030.006 (3.10.15) (4.60.15) (0.40.2) (0.750.15) 3A (1225) .122.006 .252.006 .018.008 (3.10.15) (6.30.15) (0.450.2) Derating Curve 60 40 100 3A (90C) 2H, 2J (100C) 2B (105C) 60 40 20 20 80 100 120 140 160 155 70 Ambient Temperature (C) 20 40 60 For resistors operated at an ambient temperature of 70C or above, a power rating shall be derated in accordance with the above derating curve. ordering information New Part # WK73S 2J Type Size WK73S WK73R 2B: 0.75W, 1W 2H: 1W 2J: 1W 3A: 1.5W, 2W 3A (90C) 80 % Rated Power 80 % Rated Power 80 % Rated Power 100 0 2B (105C) 60 40 20 0 -60 -40 -20 -55 80 100 120 140 160 90 105 155 Terminal Part Temperature (C) 0 20 40 60 0 -60 -40 -20 -55 20 40 60 80 100 120 140 160 90 105 155 Terminal Part Temperature (C) 0 For resistors operated terminal temperature of described for each size or above, a power rating shall be derated in accordance with the derating curve above. Please refer to "Introduction of the derating curve based on the terminal part temperature" on the beginning of our catalog before use. If you want to use at rated power (*1), use derating curves based on the terminal part temperature on the right side graph. T Termination Material T: Sn TE Packaging TD: 0612: 7" 4mm pitch punched paper TE: 1020, 1218, 1225: 7" embossed plastic TED: 1020, 1218, 1225: 10" embossed plastic For further information on packaging, please refer to Appendix A 33L0 F Nominal Resistance 1%: 3 significant figures + 1 multiplier "R" indicates decimal on value <100 5%: 2 significant figures + 1 multiplier "R" indicates decimal on values <10 All values less than 0.1 (100m) are expressed in m with "L" as decimal. Ex: 33m, 1% = 33L0 Resistance Tolerance D: 0.5% F: 1% J: 5% Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 26 .024.004 (0.60.1) WK73S2B (1W), WK73S/R3A (2W) 100 0 -60 -40 -20 -55 t 4/11/16 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com high power, wide terminal type flat chip resistors applications and ratings Part Designation Power Rating Rated Rated T.C.R. Ambient Terminal (X 10-6/K) Temp. Part Temp. 0.75W 70C 105C 1.0W1 -- 105C WK73R2B 0.75W 70C 105C WK73S2H 1.0W 70C 100C WK73S2B WK73R2H 1.0W 70C 100C WK73S2J 1.0W 70C 100C WK73R2J 1.0W 70C 100C 1.5W 70C 90C 2.0W1 -- 90C 1.5W 70C 90C 2.0W -- 90C WK73S3A WK73R3A 800 200 100 800 200 100 100 800 200 100 100 200 800 200 100 100 200 800 300 200 100 800 300 200 100 100 200 100 200 Resistance Range () D0.5% E-24/E-96 -- -- 430m - 9.76 -- -- 430m - 9.76 10 - 1M -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- F1% E-24/E-96 -- 30m - 422m 430m - 9.76 -- 30m - 422m 430m - 9.76 10 - 1M -- 27m - 215m 220m - 9.76 10 - 430k 432k - 1M -- 33m - 237m 240m - 9.76 10 - 510k 511k - 1M -- 22m - 32.4m 33m - 357m 360m - 9.76 -- 22m - 32.4m 33m - 357m 360m - 9.76 10 - 330k 332k - 1M 10 - 330k 332k - 1M J5% E-24 10m - 27m 30m - 390m 430m - 9.1 10m - 27m 30m - 390m 430m - 9.1 10 - 1M 10m - 24m 27m - 200m 220m - 9.1 10 - 430k 470k - 1M 10m - 30m 33m - 220m 240m - 9.1 10 - 510k 560k - 1M 10m - 20m 22m - 30m 33m - 330m 360m - 9.1 10m - 20m 22m - 30m 33m - 330m 360m - 9.1 10 - 330k 360k - 1M 10 - 330k 360k - 1M Maximum Maximum Operating Working Overload Temp. Voltage Voltage Range 200V 400V 200V 400V 200V 400V 200V 400V -55C to +155C Rated voltage = Power rating x resistance value or max. working voltage, whichever is lower 1 If you want to use at rated power use derating curves based on the terminal part temperature on the right side graph located on previous page. If any questions arise whether to use the "Rated Ambient Temperature" or the "Rated Terminal Part Temperature", please give priority to the "Rated Terminal Part Temperature." For more details refer to the "Introduction of the derating curves based on the terminal part temperature" in the beginning of the catalog environmental applications Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Solder Heat Bending Test Rapid Change of Temperature Moisture Resistance Endurance at 70C High Temperature Exposure Requirement R (%+0.005) Limit Typical Within specified -- tolerance Within specified -- T.C.R. 2% 0.2% 1% 1% 0.5% 2% 2% 0.2% 0.1% 0.1% 0.2% 0.2% Test Method 25C +25C/-55C and +25C/+125C WK73S2B (1W), WK73S/R3A (2W): Rated voltage x2.0 for 5 seconds WK7S/R2B, S2H, S/R2H, S/R2J, S/R3A: Rated voltage x2.5 for 3 seconds 260C 5C, 10 seconds 1 second Holding point 90mm, Bending 1 time, Bending 5mm -55C (30 minutes), +155C (30 minutes), 5 cycles 40C 2C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 2%: WK73S (5%) 0.5%: WK73S (5%) +155C, 1000 hours 0.2%: all others 1%: all others Additional environmental applications can also be found at www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/03/15 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 27 resistors WK73 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: KOA Speer: WK73S2JTTER560F WK73S2JTTER390F WK73R2JTTE132J WK73S3ATTER150F WK73R2HTTE1000F WK73R2HTTE20R0F WK73R2HTTE182J WK73R3ATTE220J WK73R3ATTE391J WK73R3ATTE330J WK73R3ATTE301J WK73R2HTTE100J WK73R2HTTE241J WK73R2HTTE1001F WK73R2HTTE1002F WK73R2HTTE101J WK73R2HTTE102J WK73R2HTTE103J WK73R2HTTE104J WK73R2HTTE121J WK73R2HTTE122J WK73R2HTTE132J WK73R2HTTE151J WK73R2HTTE152J WK73R2HTTE10R0F WK73R3ATTE471J WK73R3ATTE750J WK73R3ATTE102J WK73R3ATTE101J WK73R3ATTE1001F WK73R2HTTE153J WK73R3ATTE1000F WK73R3ATTE100J WK73R2HTTE202J WK73R3ATTE472J WK73R2HTTE222J WK73R3ATTE103J WK73R3ATTE911J WK73R2HTTE331J WK73R2HTTE330J WK73R2HTTE272J WK73R2HTTE242J WK73R3ATTE10R0F WK73R2JTTE363J WK73R2JTTE364J WK73R2JTTE36R0F WK73R2JTTE3900F WK73R2JTTE3901F WK73R2JTTE3902F WK73R2JTTE3903F WK73R2JTTE390J WK73R2JTTE391J WK73R2JTTE392J WK73R2JTTE393J WK73R2JTTE394J WK73R2JTTE39R0F WK73R2JTTE4300F WK73R2JTTE4301F WK73R2JTTE4302F WK73R2JTTE4303F WK73R2JTTE430J WK73R2JTTE431J WK73R2JTTE432J WK73R2JTTE433J WK73R2JTTE434J WK73R2JTTE4700F WK73R2JTTE4701F WK73R2JTTE4702F WK73R2JTTE4703F WK73R2JTTE471J WK73R2JTTE472J WK73R2JTTE473J WK73R2JTTE474J WK73R2JTTE47R0F WK73R2JTTE5100F WK73R2JTTE5101F WK73R2JTTE5102F WK73R2JTTE5103F WK73R2JTTE510J WK73R2JTTE511J WK73R2JTTE512J WK73R2JTTE513J WK73R2JTTE514J WK73R2JTTE51R0F WK73R2JTTE5600F WK73R2JTTE5601F WK73R2JTTE5602F WK73R2JTTE5603F WK73R2JTTE560J WK73R2JTTE561J WK73R2JTTE562J WK73R2JTTE563J WK73R2JTTE564J WK73R2JTTE56R0F WK73R2JTTE6200F WK73R2JTTE6201F WK73R2JTTE6202F WK73R2JTTE6203F WK73R2JTTE620J WK73R2JTTE621J