SR73 lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film current sense resistor EU features • Products with lead-free terminations meet EU RoHS requirements. EU RoHS c su regulation is not intended for Pb-glass contained er nr in electrode, resistor element and glass. se en • AEC-Q200 Qualified: 0402 (1E), 0603 (1J), 0805 (2A), t 1206 (2B), 1210 (2E), 2010 (2H/W2H), 2512 (3A/W3A) Type Dimensions inches (mm) (Inch Size Code) L W c d 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) dimensions and construction 1E (0402) .(013.09 + +0-...0010042) (.00.25 ++-0..00.10042) (.00.12±5±.000.14) (.00.12±5±.000.14) (.00.1345±±.00.0052) -0.05 -0.05 c L c 1J (0603) .0(16.36±±.00.20)8 .(003.81 + +0-...00100564) .(001.345±±.00.014) .(001.345±±.00.014) .(001.485±±.00.014) -0.1 2A (0805) .079±.008 .049±.004 .016±.008 .012 +-..000084 .02±.004 W (2.0±0.2) (1.25±0.1) (0.4±0.2) (0.3 +-00..12) (0.5±0.1) Solder 2B (1206) .063±.008 Plating .126±.008 (1.6±0.2) t NPliating 2E (1210) (3.2±0.2) .1(20.26±±.00.20)8 .(001.46 ++--00..00..1200)84 2H (2010) .197±.008 .098±.008 d PCrooatetinctgive RFielmsistive IEnlneecrtrode W2H (2010) (5.0±0.2) (2.5±0.2) .(002.5±±.00.132) (.00.2665±±.00.1056) .0(02.46±±.00.10)4 CSuebrasmtraicte 3A (2512) .248±.008 .122±.008 .(001.46 ++-0..00.200)84 (6.3±0.2) (3.1±0.2) -0.1 W3A (2512) .026±.006 (0.65±0.15) ordering information SR73 2B T TD 1R00 F Termination Nominal Type Size Packaging Tolerance Material Resistance 1H T: Sn TC: 0201 only: 7" 2mm pitch pressed ±2%, ±5%: 2 significant figures D:±0.5% 1E L: SnPb (1E, paper (TC: 10,000 pcs/reel, + 1 multiplier“R” indicates F: ±1% 1J 1J, 2A, 2B, 2E, TCM: 15,000 pcs/reel) decimal on value <10Ω G:±2% TPL:0402 only: 2mm pitch punch paper 2H, 3A) ±1%: 3 significant figures 2A G: Au (1J, 2A, 2B: TP: 0402, 0603, 0805: 7" 2mm pitch + 1 multiplier“R” indicates J: ±5% 2B 0.1Ω - 10Ω - punch paper decimal on value <100Ω 2E contact factory) TD: 0603, 0805, 1206, 1210: 7" 4mm All values less than 0.1Ω pitch punched paper W2H (100mΩ) areexpressed in TDD: 0603, 0805, 1206, 1210: 10" paper tape W3A mΩ with “L” as decimal TE: 0805, 1206, 1210, 2010 & 2512: Example: 20mΩ = 20L 2H 7" embossed plastic (3-digit) 3A TED: 0805, 1206, 1210, 2010 & 2512: 10" embossed plastic For further information on packaging, please refer to Appendix A applications and ratings Power Rated Rated T.C.R. Resistance Range Part Rating Ambient Terminal (ppm/°C) Designation* E-24, E-96 E-24, E-96 E-24 E-24 @ 70°C Temp. Part Temp. Max. (D±0.5%) (F±1%)** (G±2%) (J±5%) SR731H 0.1W 70°C — 0 ~ +400 — 1Ω - 10Ω** — 0.27Ω - 10Ω (0201) 0 ~ +500 — 0.18Ω - 0.24Ω SR731E ±200 — 0.51Ω - 10Ω** 0.51Ω - 10Ω 0.51Ω - 10Ω (0402) 1/6W (.166W) 70°C 125°C ±300 — 0.2Ω - 0.47Ω** 0.2Ω - 0.47Ω 0.2Ω - 0.47Ω ±500 — 0.1Ω - 0.18Ω** 0.1Ω - 0.18Ω 0.1Ω - 0.18Ω SR731J 1/5W (.2W) 70°C 125°C ±200 — 1.02Ω - 10Ω 1.1Ω - 10Ω 1.1Ω - 10Ω (0603) New 1/4W (.25W) 70°C 125°C ±200 — 0.1Ω - 1Ω 0.1Ω - 1Ω 0.1Ω - 1Ω Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 10/26/18 148 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com

SR73 lo-ohm 0.5%, 1%, 2%, 5% tolerance thick film current sense resistor applications and ratings (continued) Power Rated Rated T.C.R. Resistance Range Part Rating Ambient Terminal (ppm/°C) Designation* E-24, E-96 E-24, E-96 E-24 E-24 @ 70°C Temp. Part Temp. Max. (D±0.5%) (F±1%)** (G±2%) (J±5%) t ne ±100 0.15Ω - 10Ω 0.1Ω - 10Ω — — es 1/3W (.33W) 70°C 125°C ±±520000 —— —— 0.1Ω— - 10Ω 0.005.11ΩΩ -- 01.00Ω91Ω rren SR732A ±800 — — — 0.030Ω - 0.047Ω us (0805) ±100 0.15Ω - 10Ω 0.1Ω - 10Ω — — c 1/2W (.5W1) –– 105°C ±200 — — 0.1Ω - 10Ω 0.1Ω - 10Ω ±500 — — — 0.051Ω - 0.091Ω ±800 — — — 0.030Ω - 0.047Ω ±100 0.15Ω - 10Ω 0.1Ω - 10Ω — — 1/3W (.33W) 70°C 125°C ±200 — — 0.1Ω - 10Ω 0.1Ω - 10Ω ±500 — — — 0.056Ω - 0.091Ω SR732B ±800 — — — 0.030Ω - 0.051Ω (1206) ±100 0.15Ω - 10Ω 0.1Ω - 10Ω — — 1/2W (.5W1) –– 110°C ±200 — — 0.1Ω - 10Ω 0.1Ω - 10Ω ±500 — — — 0.056Ω - 0.091Ω ±800 — — — 0.030Ω - 0.051Ω ±100 — 0.1Ω - 10Ω — — 1/2W (.5W) 70°C 125°C ±200 — — 0.1Ω - 10Ω 0.047Ω - 10Ω ±500 — — — 0.036Ω - 0.043Ω SR732E ±1000 — — — 0.024Ω - 0.033Ω (1210) ±100 — 0.1Ω - 10Ω — — 2/3W (.66W1) –– 110°C ±200 — — 0.1Ω - 10Ω 0.047Ω - 10Ω ±500 — — — 0.036Ω - 0.043Ω ±800 — — — 0.024Ω - 0.033Ω ±100 — 0.1Ω - 10Ω — — SR732H/W2H 3/4W (.75W) 70°C 125°C ±200 — — 0.1Ω - 10Ω 0.1Ω - 10Ω (2010) ±500 — — — 0.056Ω - 0.091Ω ±800 — — — 0.033Ω - 0.051Ω ±100 — 0.1Ω - 10Ω — — SR733A/W3A 1W 70°C 125°C ±200 — — 0.1Ω - 10Ω 0.1Ω - 10Ω (2512) ±500 — — — 0.056Ω - 0.091Ω ±800 — — — 0.039Ω - 0.051Ω * Parentheses indicate EIA package size codes. ** 1H, 1E (F: ±1%) E-24 values only. Operating Temp: -55C to +125°C (SR731H only), -55°C to +150°C If any questions should arise whether to use the “Rated Ambient Temperature” or the “Rated Terminal Part Temperature,” please give priority to the “Rated Terminal Part Temperature.” Prior to use and for more details refer to “Introduction of the derating curves on the terminal part temperature” in the beginning of the catalog. 1 Prior to use, refer to the “Higher Power Ratings” in the beginning of catalog. Rated voltage = √Power rating x resistance value or max. working voltage, whichever is lower environmental applications Derating Curve SR73 2A (0.5W), SR73 2B (0.5W), SR73 2E (0.66W) 1E, 1J 2A: 0.33W 2B: 0.33W 2E: 0.5W W2H, W3A For resistors operated at an ambient temperature For resistors operated at a terminal part temperature of described for each size or above, a power rating shall be derated in of 70°C or above, a power rating shall be derated accordance with the derating curve. in accordance with the derating curve. Please refer to “Introduction of the derating curve based on the terminal part temperature” on the beginning of our catalog before use. Performance Characteristics Requirement ∆ R ±(%+0.005Ω) Parameter Limit Typical Test M eth od Within specified Resistance — 25°C tolerance Within specified T.C.R. — +25°C/-55°C and +25°C/+125°C T.C.R. Overload (Short time) ±2% ±0.5% Rated voltage x 2.5 for 5 seconds 1H: ±3%, 1H: ±0.75% Resistance to Solder Heat 260°C ± 5°C, 10 seconds ± 1 second 1E~W3A: ±1% 1E~W3A: ±0.3% Rapid Change of Temperature ±1% ±0.3% -40°C (30 minutes), +125°C (30 minutes), 100 cycles 1H: ±3% Moisture Resistance ±1% 40°C ± 2°C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 1E~W3A: ±2% 1H: ±3% Endurance at 70°C ±1% 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 1E~W3A: ±2% High Temperature Exposure ±1% ±0.3% 1H: +125°C, 1000 hours; 1E, 1J, 2A, 2B, 2E, 2H/W2H, 3A/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. 11/06/18 149 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com