resistors SR73-RT low resistance flat chip resistors (anti sulfuration) EU features Excellent anti-sulfuration characteristic due to using high sulfuration-proof inner top electrode material Current detecting resistors for power supply, motor circuits, etc High reliability and performance with resistance -6 tolerance 1.0 , T.C.R. 10010 /K Suitable for both reflow and flow solderings Products with lead free termination meet EU RoHS requirements. EU RoHS regulation is not intended for Pb-glass contained in electrode, resistor element and glass. AEC-Q200 Qualified Type Dimensions inches (mm) Resistance (Inch Size Code) Range L Wc d t +.006 +.006 .039 .020 dimensions and construction -.004 -.004 .008.004 .010.004 .014.002 1 - 10 1E (0402) +0.1 +0.1 (0.20.1) (0.250.1) (0.350.05) (1.0 ) (0.5 ) -0.05 -0.05 L .016.004 .018.004 +.006 0.1 - 0.43 .031 c c (0.40.1) (0.450.1) .063.008 -.004 .018.004 1J (0603) (1.60.2) +0.15 .014.004 .014.004 (0.450.1) (0.8 ) 0.47 - 10 -0.1 (0.350.1) (0.350.1) +.008 .016 W -.004 0.1 - 0.43 +0.2 (0.4 ) Solder -0.1 .079.008 .049.004 .016.008 .02.004 2A (0805) Plating (2.00.2) (1.250.1) (0.40.2) +.008 (0.50.1) .012 -.004 0.47 - 10 Ni +0.2 t (0.3 ) -0.1 Plating +.008 .02 -.004 0.1 - 0.43 Protective Resistive Inner +0.2 d (0.5 ) -0.1 .126.008 .063.008 .02.012 .024.004 Coating Film Electrode 2B (1206) (3.20.2) (1.60.2) (0.50.3) +.008 (0.60.1) .016 -.004 Ceramic 0.47 - 10 +0.2 Substrate (0.4 ) -0.1 +.008 .02 -.004 0.1 - 0.39 +0.2 (0.5 ) -0.1 .126.008 .102.008 .02.012 .024.004 2E (1210) (3.20.2) (2.60.2) (0.50.3) +.008 (0.60.1) .016 -.004 0.43 - 10 +0.2 (0.4 ) -0.1 Derating Curve SR73 2A (0.5W), SR73 2B (0.5W), SR73 2E (0.66W) For resistors operated at an ambient temperature of 70C For resistors operated at a terminal part temperature of described for each size or above, a power rating shall be or above, a power rating shall be derated in accordance derated in accordance with the derating curve. with the derating curve. Please refer to Introduction of the derating curve based on the terminal part temperature in the beginning of our catalog before use. ordering information SR73 2B RT TD R10 J Termination Nominal Type Size Packaging Tolerance Material Resistance 1E: 0.166W RT: Sn TD: 7 4mm pitch punch paper 2%, 5%: 2 significant F: 1% Anti-Sulfur figures + 1 multiplier R 1J: 0.2W TP: 0402 only, 7 2mm pitch paper G:2% indicates decimal on 2A: 0.33W, 0.5W TPL: 0402 only, 2mm pitch paper J: 5% values <10 2B: 0.33W, 0.5W For further information on packaging, 1%: 3 significant figures please refer to Appendix A 2E: 0.5W, 0.66W + 1 multiplier R indicates decimal on values <100 Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/06/19 72 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com SR73-RT low resistance flat chip resistors (anti sulfuration) applications and ratings Resistance Range Rated Rated T.C.R. Operating Part Power Ambient Terminal (ppm/C) Temperature Designation Rating F (1%) G (2%) J (5%) Temperature Part Temp. Max. Range 1 E-24, E-96 E-24 E-24 SR731ERT 0.166W 70C 125C 200 1 - 10 1 - 10 1 - 10 (0402) 200 0.2 - 10 0.2 - 10 0.2 - 10 SR731JRT 0.2W 70C 125C (0603) 300 0.1 - 0.18 0.1 - 0.18 0.1 - 0.18 100 0.47 - 10 0.33W 70C 125C 200 0.2 - 0.43 0.2 - 10 0.2 - 10 250 0.1 - 0.18 0.1 - 0.18 0.1 - 0.18 SR732ART (0805) 100 0.47 - 10 0.5W* 105C 200 0.2 - 0.43 0.2 - 10 0.2 - 10 250 0.1 - 0.18 0.1 - 0.18 0.1 - 0.18 100 0.47 - 10 -55C 0.33W 70C 125C 200 0.2 - 0.43 0.2 - 10 0.2 - 10 to +155C 250 0.1 - 0.18 0.1 - 0.18 0.1 - 0.18 SR732BRT (1206) 100 0.47 - 10 0.5W* 110C 200 0.2 - 0.43 0.2 - 10 0.2 - 10 250 0.1 - 0.18 0.1 - 0.18 0.1 - 0.18 100 0.43 - 10 0.5W 70C 125C 200 0.2 - 0.39 0.2 - 10 0.2 - 10 250 0.1 - 0.18 SR732ERT (1210) 100 0.43 - 10 0.66W* 110C 200 0.2 - 0.39 0.2 - 10 0.2 - 10 250 0.1 - 0.18 Rated voltage = Power rating x resistance value or max. working voltage, whichever is lower 1 The nominal resistance for SR731E (F:1%), SR731J, 2A, 2B (0.1~0.43) and SR732E (0.1~0.39) is E-24 only * Please use the derating curve based on the terminal part temperature in graph below. 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. environmental applications Performance Characteristics Requirement R (%+0.005 ) Parameter Limit Typical Test Method Within specified Resistance 25C tolerance Within specified T.C.R. +25C/-55C and +25C/+125C T.C.R. Overload (Short time) 2% 0.5% Rated voltage x 2.5 for 5 seconds Resistance to Solder Heat 1% 0.3% 260C 5C, 10 seconds 1 second Rapid Change of Temperature 1% 0.3% -55C (30 minutes), +125C (30 minutes), 100 cycles Moisture Resistance 2% 1% 40C 2C, 90%-95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Endurance at 70C 2% 1% 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle High Temperature Exposure 1% 0.3% +155C, 1000 hours Sulfuration Test 5% 0.2% Soaked in industrial oil with sulfur substance 3.5% contained, 105C 3C, 500 hours Please refer to conventional products for characteristic data such as temperature rise. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/06/19 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 73 resistors