resistors RF73 fusing flat chip resistor EU features • Performs like RK73 under normal conditions • Fuses when overloaded • Marking: Black three-digit on brown protective coating 1J: No marking • 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 L c c W t d 1J (0603) Solder Plating Ni Plating Protective Coating Resistive Inner Film Electrode Type 2B (1206) 2E (1210) 3A (2512) ordering information RF73 2A (0805) 2H (2010) Ceramic Substrate New Part # Type (Inch Size Code) 2B Size Code 1J: 0603 2A: 0805 2B: 1206 2E: 1210 2H: 2010 3A: 2512 T Termination Material T: Sn (Other termination styles may be available, please contact factory for options) L Dimensions inches (mm) W c d t .063±.008 .031±.004 .012±.004 .012±.004 (1.6±0.2) (0.8±0.1) (0.3±0.1) (0.3±0.1) .079±.008 .049±.004 .016±.008 (2.0±0.2) (1.25±0.1) (0.4±0.2) .063±.008 .126±.008 (1.6±0.2) (3.2±0.2) .102±.008 (2.6±0.2) .197±.008 .098±.008 (5.0±0.2) (2.5±0.2) .02±.012 (0.5±0.3) .012 (0.3 .016 (0.4 +.008 -.004 +0.2 ) -0.1 +.008 -.004 +0.2 ) -0.1 .02±.004 (0.5±0.1) .024±.004 (0.6±0.1) .248±.008 .122±.008 (6.3±0.2) (3.1±0.2) TD Packaging TD: 7" paper tape (0603, 0805, 1206, 1210: 5,000 pieces/reel) TE: 7" embossed plastic (0805, 1206, 1210, 2010, 2512: 4,000 pieces/reel) 100 Nominal Resistance 2 significant figures + 1 multiplier “R” indicates decimal on value <10Ω 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. 46 12/10/13 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com fusing flat chip resistor T.C.R. (ppm/°C) Max. Power Part Rating Designation @ 70°C RF731J 0.063W RF732A 0.1W RF732B RF732E RF732H RF733A Resistance Resistance Range Tolerance E-24 +1000 ~ -500 (1.0Ω-3.3Ω) ±500 (3.6Ω-100Ω) Maximum Open Circuit Voltage 1Ω-100Ω 50V 0.125W +1000 ~ -500 (0.2Ω-4.3Ω) 0.25W 0.2Ω-510Ω ±500 (4.7Ω-510Ω) 0.50W J: ±5% 100V 1.0W Fusing Power –– 2.6W 1.0Ω 2.4W 1.1Ω-20Ω 2.1W 22Ω-100Ω 3.0W 0.2Ω-0.47Ω 3.75W 0.2Ω-0.47Ω 4.5W 0.2Ω-0.47Ω 5.5W 0.2Ω-0.47Ω 6.5W 0.2Ω-0.47Ω 2.6W 0.51Ω-1.0Ω 2.875W 0.51Ω-10Ω 4.1W 0.51Ω-4.7Ω 5.0W 0.51Ω-4.7Ω 6.0W 0.51Ω-4.7Ω 2.4W 1.1Ω-20Ω 2.5W 11Ω-24Ω 3.5W 5.1Ω-27Ω 4.0W 5.1Ω-27Ω 5.0W 5.1Ω-30Ω 2.1W 22Ω-100Ω 2.0W 27Ω-100Ω 3.2W 30Ω-100Ω 3.5W 30Ω-100Ω 4.5W 33Ω-100Ω One-Pulse Limiting Electric Power Derating Curve % Rated Power 80 60 40 20 0 -60 -40 -55 -20 0 20 40 60 80 70 Ambient Temperature (°C) 100 120 140 125 One-Pulse Limiting Electric Power (W) environmental applications 100 30 25 20 15 10 3A 2.0W 110Ω-510Ω 60 1.75W sec. 110Ω-510Ω max. 3.0W 110Ω-510Ω 3.2W 110Ω-510Ω 4.0W 110Ω-510Ω -55°C to +125°C Example of Fusing Characteristics 2H 2E 5 2B 1J, 2A 1 .01 .1 1 10 1 100 1J, 2A 0 1 2 2B 3 Pulse Duration (ms) Performance Characteristics Requirement ∆ R ±(% + 0.1Ω) Limit Typical Within specified –– tolerance T.C.R. Within specified T.C.R. –– Overload (Short Time) Resistance to Solder Heat Rapid Change of Temperature ±5.0% ±3.0% ±0.5%: 2A~3A ±3.0%: 1J ±2.0% 0.5% ±0.3%: 2A~3A ±0.6%: 1J ±5.0% ±5.0% ±1.0% ±2.0% ±1.0% ±0.6% Moisture Resistance Endurance at 70°C High Temperature Exposure –– 10 For resistors operated at an ambient temperature of 70°C or above, a power rating shall be derated in accordance with the above derating curve. Parameter Resistance Operating Temperature Fusing Range Time Fusing Characteristics Fusing TIme (Sec.) applications and ratings 25°C 2E 4 2H 5 Fusing Power (W) 3A 6 7 Test Method +25°C/-55°C and +25°C/+125°C Rated voltage x 2 for 5 seconds (except 2E, 2H, 3A: x 1.5) 260°C ± 5°C for 10 seconds ± 1 second -55°C (30 minutes)/ +125°C (30 minutes) 5 cycles 40°C ± 2°C, 90 - 95% RH, 500 hours, 1.5 hr ON, 0.5 hr OFF cycle 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle +125°C, 100 hours Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 11/27/14 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 47 8 resistors RF73