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 1J~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. dimensions and construction Type L (Inch Size Code) L c c W Solder Plating Ni Plating t d Protective Coating Resistive Inner Film Electrode Ceramic Substrate Dimensions inches (mm) W c d t 1H (0201) .024.001 .012.001 .004.002 .006.002 .009.001 (0.60.03) (0.30.03) (0.10.05) (0.150.05) (0.230.03) 1E (0402) .039 .02 (1.0 (0.5 1J (0603) .063.008 (1.60.2) 2A (0805) .079.008 .049.004 .016.008 (2.00.2) (1.250.1) (0.40.2) 2B (1206) .063.008 .126.008 (1.60.2) (3.20.2) .102.008 (2.60.2) 2E (1210) 2H (2010) W2H (2010) 3A (2512) W3A (2512) +.004 -.002 +0.1 ) -0.05 +.004 -.002 +0.1 ) -0.05 .01.004 (0.250.1) +.006 -.004 +0.15 ) -0.1 .014.004 .014.004 .018.004 (0.350.1) (0.350.1) (0.450.1) .031 (0.8 .197.008 .098.008 (5.00.2) (2.50.2) .01.004 .014.002 (0.250.1) (0.350.05) .012 (0.3 .016 (0.4 .02.012 (0.50.3) .02.004 (0.50.1) +.008 -.004 +0.2 ) -0.1 .026.006 .024.004 (0.650.15) (0.60.1) .016 (0.4 .248.008 .122.008 (6.30.2) (3.10.2) +.008 -.004 +0.2 ) -0.1 +.008 -.004 +0.2 ) -0.1 .026.006 (0.650.15) ordering information New Part # SR73 2B Type Size 1H 1E 1J 2A 2B 2E W2H W3A 2H 3A T Termination Material T: Sn (Other termination styles may be available, please contact factory for options) G: Au (2A: 0.1 10 - 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 <10 1%: 3 significant figures + 1 multiplier "R" indicates decimal on value <100 All values less than 0.1 (100m) are expressed in m with "L" as decimal Example: 20m = 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% 4/27/11 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 @ 70C SR731H (0201) 0.1W SR731E (0402) SR731J (0603) T.C.R. (ppm/C) Max. 0 - 500 Resistance Range E-24, E-96 E-24, E-96 (D0.5%) (F1%) -- E-24 (G2%) E-24 (J5%) -- -- 1 - 10** 0.51 - 10** 0.51 - 10 0.22 - 0.47** 0.22 - 0.47 0.1 - 0.2** 0.1 - 0.2 1/8W (.125W) 1/6W (.166W1) -- -- -- 1/5W (.2W) 200 -- 0.1 - 10 0.1 - 10 0.1 - 10 100 200 500 800 100 200 500 800 100 200 500 1000 100 200 500 800 100 200 500 800 0.15 - 10 -- -- -- 0.15 - 10 -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 -- -- -- 0.1 - 10 0.051 - 0.091 0.030 - 0.047 -- 0.1 - 10 0.056 - 0.091 0.030 - 0.051 -- 0.047 - 10 0.036 - 0.043 0.024 - 0.033 -- 0.1 - 10 0.056 - 0.091 0.033 - 0.051 -- 0.1 - 10 0.056 - 0.091 0.039 - 0.051 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 -55C to +125C 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 0.18 - 0.24 0 - 400 200 250 300 SR732A (0805) Absolute Maximum Working Voltage 0.27 - 10 0.51 - 10 0.22 - 0.47 0.1 - 0.2 -55C to +150C * 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 80 140 60 1H Temperature Rise (C) % Rated Power 160 1E, 1J, 2A, 2B, 2E, 2H, 3A, W2H, W3A 40 20 W3A (1W) W2H (.75W) 2E (.66W) 2B (.5W) 2A (.33W) 2E (.5W) 2B (.33W) 120 100 80 2A (.25W) 1E (.166W) 1J (.2W) 1H (.1W) 1E (.125W) 60 40 20 0 -60 -40 -20 -55 0 40 0 80 100 120 140 160 70 125 150 Ambient Temperature (C) 20 60 0 25 50 75 100 % Rated Power Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70C High Temperature Exposure Requirement R (%+0.05) 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 25C +25C/-55C and +25C/+125C Rated Voltage x 2.5 for 5 seconds 260C 5C, 10 seconds 1 second -40C (30 minutes), +125C (30 minutes), 100 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 1H: +125C, 1000 hours; 1E, 1J, 2A, 2B, 2E, W2H, W3A:+150C, 1000 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 4/27/11 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 37 resistors SR73