1733 Reader's Spreads pg1-203:document 1/27/09 4:12 PM Page 171 RF73 fusing flat chip resistor EU • • • • • • 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 EU 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 t 1J (0603) .063±.008 .031±.004 .012±.004 .012±.004 (1.6±0.2) (0.8±0.1) (0.3±0.1) (0.3±0.1) 2A (0805) .079±.008 .049±.004 .016±.008 (2.0±0.2) (1.25±0.1) (0.4±0.2) 2B (1206) 2E (1210) .063±.008 .126±.008 (1.6±0.2) (3.2±0.2) .102±.008 (2.6±0.2) 2H (2010) .197±.008 .098±.008 (2.5±0.2) (5.0±0.2) 3A (2512) .248±.008 .122±.008 (3.1±0.2) (6.3±0.2) .02±.012 (0.5±0.3) .012 (0.3 .016 (0.4 .02±.004 (0.5±0.1) +.008 -.004 +0.2 ) -0.1 +.008 -.004 +0.2 ) -0.1 .024±.004 (0.6±0.1) 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 <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. 11/20/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 173 circuit protection features 1733 Reader's Spreads pg1-203:document 1/27/09 4:13 PM Page 172 PMS 300 neg. Black neg. RF73 fusing flat chip resistor applications and ratings T.C.R. (ppm/°C) Max. Resistance Resistance Range Tolerance E-24* RF731J +1000 ~ -500 (1.0Ω-3.3Ω) 0.63W ±500 (3.6Ω-100Ω) RF732A 0.1W RF732B RF732E RF732H Maximum Open Circuit Voltage 1Ω-100Ω 50V 0.125W +1000 ~ -500 (0.2Ω-4.3Ω) 0.25W 0.2Ω-510Ω ±500 0.50W (4.7Ω-510Ω) J: ±5% 100V RF733A 1.0W Fusing Characteristics Fusing Time 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 Operating Temperature Range –– 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 environmental applications One-Pulse Limiting Electric Power Derating Curve 100 40 20 -20 0 20 40 60 80 70 Ambient Temperature (°C) 100 120 140 125 10 3A 2H 2E Fusing TIme (Sec.) Limiting Electric Power 60 0 -60 -40 -55 Typical Fusing Characteristics 100 80 % Rated Power circuit protection Power Part Rating Designation @ 70°C 10 2B 1J, 2A 1 .01 .1 1 10 1 100 1J, 2A 0 1 2 Pulse Duration (msec) 2B 3 2E 4 2H 5 3A 6 7 8 Fusing Power (W) Performance Characteristics Parameter Resistance 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 Test Method 25°C +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. 174 1/06/09 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com