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48 KOA Speer Electronics, Inc.• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • 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. 12/16/14 resistors SR73 lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film current sense resistor

features

  • Marking: 1H: no marking on black protective coating 1E, 1J: No marking on indigo protective coating. 2A~W3A: three or four digit marking on indigo protective coating.
  • 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: 0402 (1E), 0603 (1J), 0805 (2A),

ordering information

D: ±0.5% F: ±1% G:±2% J: ±5% T: Sn L: SnPb (1E, 1J, 2A, 2B, 2E, 2H, 3A) G: Au (1J, 2A, 2B: 0.1Ω - 10Ω - contact factory) ±2%, ±5%: 2 significant figures + 1 multiplier“R” indicates decimal on value <10Ω ±1%: 3 significant figures + 1 multiplier“R” indicates decimal on value <100Ω All values less than 0.1Ω (100mΩ) areexpressed in mΩ with “L” as decimal Example: 20mΩ = 20L (3-digit) W2H W3A TCM: 0201 only: 7" 2mm pitch pressed paper TPL:0402 only: 2mm pitch punch paper TP: 0402, 0603, 0805: 7" 2mm pitch punch paper TD: 0603, 0805, 1206, 1210: 7" 4mm pitch punched paper TDD: 0603, 0805, 1206, 1210: 10" paper tape TE: 0805, 1206, 1210, 2010 & 2512: 7" embossed plastic TED: 0805, 1206, 1210, 2010 & 2512: 10" embossed plastic For further information on packaging, please refer to Appendix A SR73 Type Size Nominal Resistance ToleranceTermination Material Packaging New Part # 2B TD 1R00 FT dimensions and construction Protective Coating Inner Electrode Resistive Film Ceramic Substrate Solder Plating Ni Plating L cc W t d Type L .039 +.004 -.002 (1.0 +0.1 )-0.05 .01±.004 (0.25±0.1) .012 +.008 -.004 (0.3 +0.2)-0.1 .016 +.008 -.004 (0.4 +0.2)-0.1 .016 +.008 -.004 (0.4 +0.2)-0.1 .014±.002 (0.35±0.05) .018±.004 (0.45±0.1) .014±.004 (0.35±0.1) .02±.004 (0.5±0.1) .024±.004 (0.6±0.1) .01±.004 (0.25±0.1) .014±.004 (0.35±0.1) .016±.008 (0.4±0.2) .02±.012 (0.5±0.3) .009±.001 (0.23±0.03) .006±.002 (0.15±0.05) .026±.006 (0.65±0.15) .026±.006 (0.65±0.15) .004±.002 (0.1±0.05) .063±.008 (1.6±0.2) .102±.008 (2.6±0.2) .098±.008 (2.5±0.2) .126±.008 (3.2±0.2) .049±.004 (1.25±0.1) .031 +.006 -.004 (0.8 +0.15)-0.1 .02 +.004 -.002 (0.5 +0.1 )-0.05 .063±.008 (1.6±0.2) .079±.008 (2.0±0.2) .197±.008 (5.0±0.2) .024±.001 (0.6±0.03) (0402) (0603) (0805) (1206) .012±.001 (0.3±0.03) (0201) (2010) W2H (2010) .122±.008 (3.1±0.2) .248±.008 (6.3±0.2) (2512) W3A (2512) (Inch Size Code) Wc d t Dimensions inches (mm) (1210) EU

lo-ohm 0 .5 % , 1% , 2 % , 5 % tolerance thick film current sense resistor * Parentheses indicate E IA package size codes. ** 1H, 1E (F: ±1%) E -24 values only. 1 Please refer to the “Higher Pow er Ratings” statem ent in the beginning of the catalog. Contact KO A prior to usage. 2 S R73W 3A S (2010 size, 1 W att) w ith lim ited Resistance Range - contact factory for details. Absolute Maximum Working Voltage E-24, E-96 (F±1%) E-24 (G±2%) E-24 (J±5%) Part Designation* Maximum Overload Voltage (5 Secs. Max.) Operating Temp. Range Power Rating @ 70°C applications and ratings SR731E (0402) SR731J (0603) 0.51 Ω - 10 Ω 0.2 Ω - 0.47 Ω 0.1 Ω - 0.18 Ω 0.51 Ω - 10 Ω 0.2 Ω - 0.47 Ω 0.1 Ω - 0.18 Ω 0.1 Ω - 10 Ω 0.1 Ω - 10 Ω 0.1 Ω - 10 Ω 0.51 Ω - 10 Ω 0.2 Ω - 0.47 Ω 1.11V 2.79 V 1.41V 3.53V 0.1 Ω - 0.18 Ω ±200 ±250 1/8W (.125W ) 1/6W (.166W 1) 1/5W (.2W ) SR732A (0805) 1.58V 3.9 5V 1/4W (.25W ) 1/3W (.33W 1) ±300 ±200 Resistance Range T.C.R. (ppm/°C) Max. -55°C to +150°C -55°C to +125°C Rated Terminal Part Temp. 125°C 0.1 Ω - 10 Ω —±100 — — 0.1 Ω - 10 Ω±200 0.1 Ω - 10 Ω ——±500 0.051 Ω - 0.09 1 Ω ——±800 0.030 Ω - 0.047 Ω SR732B 1/2W (.5W 1) 0.1 Ω - 10 Ω —±100 — — 0.1 Ω - 10 Ω±200 0.1 Ω - 10 Ω ——±500 0.056 Ω - 0.09 1 Ω ——±800 0.030 Ω - 0.051 Ω SR732H/W2H 0.1 Ω - 10 Ω —±100 — — 0.1 Ω - 10 Ω±200 0.1 Ω - 10 Ω ——±500 0.056 Ω - 0.09 1 Ω ——±800 0.033 Ω - 0.051 Ω SR733A/W3A (2512) 3.16V 7.9 0V 1W 0.1 Ω - 10 Ω —±100 — — 0.1 Ω - 10 Ω±200 0.1 Ω - 10 Ω ——±500 0.056 Ω - 0.09 1 Ω ——±800 0.039 Ω - 0.051 Ω SR732E 2/3W (.66W 1) 0.1 Ω - 10 Ω —±100 — — 0.1 Ω - 10 Ω±200 0.047 Ω - 10 Ω ——±500 0.036 Ω - 0.043 Ω ——±1000 0.024 Ω - 0.033 Ω Derating Curve Performance Characteristics environm ental applications % Rated Power 100 -60 -40 0 4 06 08 01 001 60 Ambient Temperature (°C) -55 120 125 -20 1 40 150 1E, 1J, 2A, 2B, 2E, 2H, 3A, W2H, W3A % Rated Po we r 100 -60 -40 0 4 0 6 0 8 01 0 0 1 6 020 Terminal Part Temperature (°C) -55 120 125 -20 140 150 1E, 1J, 2A, 2B, 2E, 2H/W2H, 3A/W3A E-24, E-96 (D±0.5%) SR731H (0201) 1Ω - 10 Ω 0.27 Ω - 10 Ω 1.0V 2.5V 0.1W 0 - ±500 0 - ±400 0.15 Ω - 10 Ω 0.15 Ω - 10 Ω —Parameter Requirement ∆ R ±(%+0.005 Ω) Limit Typical Test Method Resistance T.C .R. 25°C W ithin specified tolerance W ithin specified T.C .R. O verload (S hort tim e) Rated voltage x 2.5 for 5 seconds ±2% ±0.5% Resistance to S older Heat 260°C ± 5°C , 10 seconds ± 1 second 1H: ±3%, 1E ~W 3A : ±1% 1H: ±0.75% 1E ~W 3A : ±0.3% Rapid C hange of Tem perature -40°C (30 m inutes), +125°C (30 m inutes), 100 cycles ±1% ±0.3% M oisture Resistance 40°C ± 2°C , 9 0%-9 5% RH, 1000 hours, 1.5 hr O N , 0.5 hr O FF cycle 1H: ±3% 1E ~W 3A : ±2% ±1% E ndurance at 70°C 70°C ± 2°C , 1000 hours, 1.5 hr O N , 0.5 hr O FF cycle 1H: ±3% 1E ~W 3A : ±2% ±1% High Tem perature E xposure 1H: +125°C, 1000 hours; 1E , 1J, 2A , 2B, 2E , 2H/W 2H, 3A /W 3A :+150°C, 1000 hours ±1% ±0.3% For resistors operated at an am bient tem perature of 70°C or above, a pow er rating shall be derated in accordance w ith the derating curve. Rated voltage = √Pow er rating x resistance value or m ax. w orking voltage, w hichever is low er Rated am b ient tem perature: +70°C For resistors operated at a term inal part tem perature of described for each size or above, a pow er rating shall be derated in accordance w ith the derating curve. Please refer to “Introduction of the derating curve based on the term inal part tem perature” on the beginning of our catalog before use. 49 K O A S peer E lectronics, Inc. • 199 Bolivar D rive • Bradford, PA 16701 • U SA • 814-362-5536 • Fax: 814-362-8883 • w w w.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/05/14 resistors