resistors RF73 fusing flat chip resistor EU features Performs like RK73 under normal conditions Fuses when overloaded 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. Recognized by safety standard UL1412. (0603 (1J) is not recognized) dimensions and construction Type Dimensions inches (mm) L (Inch Size Code) L Wc d t c c 1J .063.008 .031.004 .012.004 .012.004 (0603) (1.60.2) (0.80.1) (0.30.1) (0.30.1) .02.004 +.008 W .012 2A .079.008 .049.004 .016.008 -.004 (0.50.1) (0805) (2.00.2) (1.250.1) (0.40.2) +0.2 Solder (0.3 ) -0.1 Plating 2B .063.008 Ni (1206) (1.60.2) t Plating .126.008 (3.20.2) 2E .102.008 +.008 (1210) .016 (2.60.2) d Protective Resistive Inner .02.012 -.004 .024.004 Coating Film Electrode +0.2 (0.50.3) (0.60.1) 2H .197.008 .098.008 (0.4 ) -0.1 (2010) (5.00.2) (2.50.2) Ceramic Substrate 3A .248.008 .122.008 (2512) (6.30.2) (3.10.2) ordering information RF73 2B T TD 100 J Size Termination Nominal Type Packaging Tolerance Code Material Resistance 1J: 0603 T: Sn TD: 7 paper tape 2 significant J: 5% (0603, 0805, 1206, 1210: figures + 1 2A: 0805 (Other termination 5,000 pieces/reel) multiplier styles may be 2B: 1206 available, please TE: 7 embossed plastic R indicates 2E: 1210 contact factory (0805, 1206, 1210, 2010, decimal on 2H: 2010 for options) 2512: 4,000 pieces/reel) value <10 3A: 2512 For further information on packaging, please refer to Appendix A. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/08/17 76 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com RF73 fusing flat chip resistor applications and ratings Maximum Power T.C.R. Resistance Fusing Characteristics Operating Part Resistance Open Rating (ppm/C) Range Temperature Designation Tolerance Circuit Fusing 70C Max. E-24 Range Fusing Power Voltage Time +1000 ~ -500 (1.0-3.3) 2.6W 2.4W 2.1W RF731J 0.063W 1-100 1.0 1.1-20 22-100 500 (3.6-100) 3.0W 2.6W 2.4W 2.1W 2.0W RF732A 0.1W 50V 0.2-0.47 0.51-1.0 1.1-20 22-100 110-510 60 -55C 3.75W 2.875W 2.5W 2.0W 1.75W RF732B 0.125W J: 5% sec. to +1000 ~ -500 0.2-0.47 0.51-10 11-24 27-100 110-510 max. +125C (0.2-4.3) 4.5W 4.1W 3.5W 3.2W 3.0W RF732E 0.25W 0.2-510 0.2-0.47 0.51-4.7 5.1-27 30-100 110-510 500 5.5W 5.0W 4.0W 3.5W 3.2W (4.7-510) RF732H 0.50W 0.2-0.47 0.51-4.7 5.1-27 30-100 110-510 100V 6.5W 6.0W 5.0W 4.5W 4.0W RF733A 1.0W 0.2-0.47 0.51-4.7 5.1-30 33-100 110-510 Rated ambient temperature: +70C environmental applications Derating Curve One-Pulse Limiting Electric Power Example of Fusing Characteristics 30 25 20 10 15 10 3A 2H 5 2E 2B 1J, 1J, 2A 2A 2B 2E 2H 3A 1 1 .01 .1 1 10 100 0 1 2 3 4 5 6 7 8 Pulse Duration Fusing Power (ms) (W) For resistors operated at an ambient temperature of 70C or above, a power rating shall be derated in accordance with the above derating curve. Performance Characteristics Requirement R (% + 0.1 ) 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) 5.0% 2.0% Rated voltage x 2 for 5 seconds (except 2E, 2H, 3A: x 1.5) Resistance to Solder Heat 3.0% 0.5% 260C 5C for 10 seconds 1 second 0.3%: 2A~3A 0.5%: 2A~3A Rapid Change of Temperature -55C (30 minutes)/ +125C (30 minutes) 5 cycles 0.6%: 1J 3.0%: 1J Moisture Resistance 5.0% 2.0% 40C 2C, 90 - 95% RH, 500 hours, 1.5 hr ON, 0.5 hr OFF cycle Endurance at 70C 5.0% 1.0% 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle High Temperature Exposure 1.0% 0.6% +125C, 100 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/21/16 KOA Speer Electronics, Inc. 199 Bolivar Drive Bradford, PA 16701 USA 814-362-5536 Fax: 814-362-8883 www.koaspeer.com 77 One-Pulse Limiting Electric Power (W) Fusing TIme (Sec.) resistors