RF73 fusing flat chip resistor features circuit protection * * * * * * Anti-leaching nickel barrier terminations Suitable for flow and reflow soldering Performs like RK73 under normal conditions Fuses when overloaded Marking: Black three-digit on brown protective coating Products with lead-free terminations meet RoHS requirements. Pb located in glass material, electrode and resistor element is exempt per Annex 1, exemption 5 of EU directive 2005/95/EC dimensions and construction L c Type c (Inch Size Code) W Solder Plating Ni Plating t d Protective Coating Resistive Inner Film Electrode Ceramic Substrate L Dimensions inches (mm) W c d 1J (0603) .063.008 .031.004 .012.004 .012.004 (1.60.2) (0.80.1) (0.30.1) (0.30.1) 2A (0805) .079.008 .049.004 .016.008 (2.00.2) (1.250.1) (0.40.2) 2B (1206) 2E (1210) .063.008 .126.008 (1.60.2) (3.20.2) .102.008 (2.60.2) 2H (2010) .197.008 .098.008 (5.00.2) (2.50.2) 3A (2512) .248.008 .122.008 (6.30.2) (3.10.2) .012 (0.3 .016 (0.4 .02.012 (0.50.3) t .02.004 (0.50.1) +.008 -.004 +0.2 ) -0.1 +.008 -.004 +0.2 ) -0.1 .024.004 (0.60.1) .025.006 (0.650.15) ordering information New Part # RF73 Type 2B T Size Code Termination Material T: Sn (Other termination styles may be available, please contact factory for options) 1J: 0603 2A: 0805 2B: 1206 2E: 1210 2H: 2010 3A: 2512 TD Packaging TD: 7" paper tape (0603, 0805, 1206, 1210: 5,000 pieces/reel) TE: 7" punched plastic (0805, 1206, 1210, 2010, 2512: 4,000 pieces/reel) 100 Nominal Resistance 2 significant figures + 1 multiplier "R" indicates decimal on value <10! J Tolerance J: 5% 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. 172 2/20/07 KOA Speer Electronics, Inc. * Bolivar Drive * P.O. Box 547 * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com RF73 fusing flat chip resistor Power Part Rating Designation @ 70C T.C.R. (ppm/C) Max. Resistance Resistance Range Tolerance E-24* RF731J +1000 ~ -500 (1.0!-3.3!) 0.63W 500 (3.6!-100!) RF732A 0.1W RF732B 0.125W RF732E 0.25W Maximum Open Circuit Voltage 1!-100! 50V J: 5% 1000 (0.2!-4.3!) RF732H 500 0.50W (4.7!-510!) RF733A 1.0W 0.2!-510! 100V Operating Temperature Fusing Range Time Fusing Characteristics Fusing Power -- 2.6W 1.0! 2.4W 1.1!-20! 2.1W 22!-100! 3.0W 0.2!-0.47! 3.75W 0.2!-0.47! 4.5W 0.2!-0.47! 5.5W 0.2!-0.47! 6.5W 0.2!-0.47! 2.6W 0.51!-1.0! 2.875W 0.51!-10! 4.1W 0.51!-4.7! 5.0W 0.51!-4.7! 6.0W 0.51!-4.7! 2.4W 1.1!-20! 2.5W 11!-24! 3.5W 5.1!-27! 4.0W 5.1!-27! 5.0W 5.1!-30! 2.1W 22!-100! 2.0W 27!-100! 3.2W 30!-100! 3.5W 30!-100! 4.5W 33!-100! -- 2.0W 110!-510! 60 1.75W sec. 110!-510! max. 3.0W 110!-510! 3.2W 110!-510! 4.0W 110!-510! -55C to +125C environmental applications Derating Curve One-Pulse Limiting Electric Power % Rated Power 80 60 40 20 0 -60 -40 -55 -20 0 20 40 60 80 70 Ambient Temperature (C) 100 120 140 125 10 3A 2H 2E Fusing TIme (Sec.) 100 Limiting Electric Power 100 Typical Fusing Characteristics 10 2B 1J, 2A 1 .01 .1 1 10 100 1 1J, 2A 0 1 2 2B 3 Pulse Duration (msec) 2E 4 2H 5 3A 6 7 Fusing Power (W) Performance Characteristics Parameter Thermal Shock Low Temperature Operation High Temperature Exposure Short Time Overload Resistance to Solder Heat Terminal Strength-Bend Moisture Resistance Life Maximum # R 1.0% 1.0% 1.0% 5.0% 1.0% 1.0% 5.0% 5.0% Pulse 5.0% Temperature Cycling 1.0% Dielectric Withstanding Voltage 2A, 2B, 2E 2H, 3A Insulation Resistance 200V 400V 10,000 M! Minimum Test Method MIL-STD-202, Method 107, -55C to +125C, 5 cycles MIL-R-55342 " 4.7.4, 1 hour @ -55C followed by 45 minutes of RCWV* MIL-R-55342 " 4.7.6, 100 hours @ 125C MIL-R-55342 " 4.7.5, 2.5 x RCWV for 5 seconds MIL-R-55342 " 4.7.7, 260C for 10 seconds 2mm min. deflection in either direction for 10 seconds MIL-STD-202, Method 103, 40C, 90 - 95% RH, 1000 hours MIL-STD-202, Method 108, 70C, 1000 hours @ RCWV, 1.5 hr ON, 0.5 hr OFF 2.5 x RCWV, not exceeding maximum overload voltage, 1 second ON, 25 seconds OFF, 10,000 cycles 30 minutes @ -55C, 15 minutes @ +25C, 30 minutes @ +125C, 15 minutes @ +25C, 5 cycles MIL-STD-202, Method 301 * RCWV = Rated Continuous Working Voltage. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 8/02/07 KOA Speer Electronics, Inc. * Bolivar Drive * P.O. Box 547 * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 173 8 circuit protection applications and ratings