resistors SR73 lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film current sense resistor EU features • RuO2 thick film resistor element • Marking: 1H,1E: no marking on black protective coating 2A~W3A: three or four digit marking on indigo protective coating; 1J: No marking • 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), 1206 (2B), 1210 (2E), 2010 (2H/W2H), 2512 (3A/W3A) dimensions and construction Type L (Inch Size Code) L c c W Ni Plating d Protective Coating Resistive Inner Film Electrode Ceramic Substrate t 1H (0201) .024±.001 .012±.001 .004±.002 .006±.002 .009±.001 (0.6±0.03) (0.3±0.03) (0.1±0.05) (0.15±0.05) (0.23±0.03) 1E (0402) .039 .02 (1.0 (0.5 1J (0603) .063±.008 (1.6±0.2) 2A (0805) .079±.008 .049±.004 .016±.008 (2.0±0.2) (1.25±0.1) (0.4±0.2) 2B (1206) .063±.008 .126±.008 (1.6±0.2) (3.2±0.2) .102±.008 (2.6±0.2) Solder Plating t Dimensions inches (mm) W c d 2E (1210) 2H (2010) W2H (2010) 3A (2512) W3A (2512) +.004 -.002 +0.1 ) -0.05 +.004 -.002 +0.1 ) -0.05 .01±.004 (0.25±0.1) +.006 -.004 +0.15 ) -0.1 .014±.004 .014±.004 .018±.004 (0.35±0.1) (0.35±0.1) (0.45±0.1) .031 (0.8 .197±.008 .098±.008 (5.0±0.2) (2.5±0.2) .01±.004 .014±.002 (0.25±0.1) (0.35±0.05) .012 (0.3 .016 (0.4 .02±.012 (0.5±0.3) .02±.004 (0.5±0.1) +.008 -.004 +0.2 ) -0.1 .026±.006 .024±.004 (0.65±0.15) (0.6±0.1) .016 (0.4 .248±.008 .122±.008 (6.3±0.2) (3.1±0.2) +.008 -.004 +0.2 ) -0.1 +.008 -.004 +0.2 ) -0.1 .026±.006 (0.65±0.15) ordering information New Part # SR73 2B Type Size 1H 1E 1J 2A 2B 2E W2H W3A 2H 3A T Termination Material T: Sn L: SnPb (1E, 1J, 2A, 2B, 2E, 2H, 3A) G: Au (2A: 0.1Ω 10Ω - contact factory) TD Packaging 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 1R00 Nominal Resistance ±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) are expressed in mΩ with “L” as decimal Example: 20mΩ = 20L (3-digit) Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 36 F Tolerance D: ±0.5% F: ±1% G: ±2% J: ±5% 1/17/13 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film current sense resistor applications and ratings Part Designation* Power Rating @ 70°C SR731H (0201) 0.1W SR731E (0402) SR731J (0603) T.C.R. (ppm/°C) Max. Resistance Range E-24, E-96 E-24, E-96 (D±0.5%) (F±1%) 0 - ±500 — E-24 (G±2%) — — 1Ω - 10Ω** 0.51Ω - 10Ω** 0.51Ω - 10Ω 0.22Ω - 0.47Ω** 0.22Ω - 0.47Ω 0.1Ω - 0.2Ω** 0.1Ω - 0.2Ω E-24 (J±5%) 1/8W (.125W) 1/6W (.166W1) — — — 1/5W (.2W) ±200 — 0.1Ω - 10Ω 0.1Ω - 10Ω 0.1Ω - 10Ω ±100 ±200 ±500 ±800 ±100 ±200 ±500 ±800 ±100 ±200 ±500 ±1000 ±100 ±200 ±500 ±800 ±100 ±200 ±500 ±800 0.15Ω - 10Ω — — — 0.15Ω - 10Ω — — — — — — — — — — — — — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω — — — 0.1Ω - 10Ω 0.051Ω - 0.091Ω 0.030Ω - 0.047Ω — 0.1Ω - 10Ω 0.056Ω - 0.091Ω 0.030Ω - 0.051Ω — 0.047Ω - 10Ω 0.036Ω - 0.043Ω 0.024Ω - 0.033Ω — 0.1Ω - 10Ω 0.056Ω - 0.091Ω 0.033Ω - 0.051Ω — 0.1Ω - 10Ω 0.056Ω - 0.091Ω 0.039Ω - 0.051Ω 1/4W (.25W) 1/3W (.33W1) SR732B (1206) 1/3W (.33W) 1/2W (.5W1) SR732E (1210) 1/2W (.5W) 2/3W (.66W1) SR732H/W2H2 (2010) 3/4W (.75W) SR733A/W3A (2512) 1W Maximum Overload Voltage (5 Secs. Max.) Operating Temperature Range 1.0V 2.5V -55°C to +125°C 1.11V 2.79V 1.41V 3.53V 1.58V 3.95V 1.81V 4.54V 2.23V 5.59V 2.73V 6.84V 3.16V 7.90V 0.18Ω - 0.24Ω 0 - ±400 ±200 ±250 ±300 SR732A (0805) Absolute Maximum Working Voltage 0.27Ω - 10Ω 0.51Ω - 10Ω 0.22Ω - 0.47Ω 0.1Ω - 0.2Ω -55°C to +150°C * Parentheses indicate EIA package size codes. ** 1H, 1E (F: ±1%) E-24 values only. 1 Please contact factory for limitation of Surface Mount Temperature Rise. 2 SR73W3AS (2010 size, 1 Watt) with limited Resistance Range - contact factory for details. environmental applications Derating Curve Surface Temperature Rise 100 180 160 60 1H 1E, 1J, 2A, 2B, 2E, 2H, 3A, W2H, W3A 40 20 0 -60 -40 -20 -55 0 20 40 For resistors operated at an ambient temperature of 70°C or above, a power rating shall be derated in accordance with the above derating curve. Temperature Rise (°C) % Rated Power 80 W3A (1W) 140 W2H (.75W) 2E (.66W) 2B (.5W) 120 100 2A (.33W) 2E (.5W) 2B (.33W) 80 2A (.25W) 1E (.16W) 1J (.2W) 1H (.1W) 1E (.125W) 60 40 Regarding the temperature rise, the value of the temperature varies per conditions and board for use since the temperature is measured under our measuring conditions. Measuring Point 20 60 80 100 120 140 160 70 125 150 Ambient Temperature (°C) 0 0 25 50 75 100 Power Rating (%) Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C High Temperature Exposure Requirement ∆ R ±(%+0.05Ω) Limit Typical Within specified — tolerance Within specified — T.C.R. ±2% ±0.5% 1H: ±3%, 1H: ±0.75% 1E~W3A: ±1% 1E~W3A: ±0.3% ±1% ±0.3% 1H: ±3% ±1% 1E~W3A: ±2% 1H: ±3% ±1% 1E~W3A: ±2% ±1% ±0.3% Test Method 25°C +25°C/-55°C and +25°C/+125°C Rated Voltage x 2.5 for 5 seconds 260°C ± 5°C, 10 seconds ± 1 second -40°C (30 minutes), +125°C (30 minutes), 100 cycles 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 1H: +125°C, 1000 hours; 1E, 1J, 2A, 2B, 2E, W2H, W3A:+150°C, 1000 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/17/12 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 37 resistors SR73