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| L T73 linear positive tempco thermistor EU features * * * * * Anti-leaching nickel barrier terminations Twenty-five specifiable temperature characteristics SMD thin film resistor with thermo-perceptivity Marking: Black four-digit on bronze body color Products with lead-free terminations meet EU RoHS and China RoHS requirements circuit protection dimensions and construction c L c Type (Inch Size Code) L Dimensions inches (mm) W c d .012 (0.3 .016 (0.4 +.008 -.004 +0.2 ) -0.1 +.008 -.004 +0.2 ) -0.1 t .02.004 (0.50.1) .024.004 (0.60.1) W Solder Plating Ni Plating 2A (0805) 2B (1206) .079.008 .049.008 .016.008 (2.00.2) (1.250.2) (0.40.2) .126.008 .063.008 (1.60.2) (3.20.2) .02.008 (0.50.3) t d Protective Coating Resistive Inner Electrode Film Ceramic Substrate ordering information New Part # LT73 Type 2B Size Code 2A: 0805 2B: 1206 T Termination Material T: Sn (Other termination styles available, contact factory for options) TD Packaging TD: 7" paper taping (5,000 pieces/reel) TE: 7" embossed plastic (4,000 pieces/reel) 101 Resistance Value 2 significant figures + 1 multiplier J Tolerance G: 2% J: 5% 1000 T.C.R. 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. 11/20/08 148 KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com L T73 linear positive tempco thermistor applications and ratings Part Designation Power Rating @ 70C Absolute Maximum Working Voltage Absolute Operating Maximum Temp. Overload Range Voltage Resistance Range E-24* LT732A 2K - 24K 1K - 20K 1K - 13K 510 - 4.7K 510 - 4.7K 510 - 3.0K 510 - 3.0K 510 - 3.0K 100 - 1K 51 - 510 LT732B 2K - 51K 1K - 43K 1K - 27K 1K - 10K 510 - 9.1K 510 - 6.2K 510 - 6.2K 510 - 6.2K 100 - 2K 51 - 510 G: 2% 150, 250, 350, 450, 500 100ppm/C 600, 700, 800, 900 150ppm/C 1000, 1200, 1400 15% 1600, 1800 2000, 2200, 2400 2600, 2800 3000, 3300, 3600 10% 3900 4200 4500 Resistance Tolerance T.C.R. (ppm/C)** T.C.R. Tolerance circuit protection LT732A 100mW 50V 100V -40C to +125C J: 5% LT732B 125mW 75V 150V * See Appendix D for available decade values. ** T.C.R. is factory tested from 25C to 75C. environmental applications Derating Curve 100 80 % Rated Power 60 40 20 0 -40 Examples of Temperature Characteristics of Resistance Resistance Changing Rate (R) 60 50 40 30 20 10 0 -10 -20 -30 -50 -25 0 25 50 75 100 125 3300ppm/C 2400ppm/C 1600ppm/C 4500ppm/C -20 0 20 40 60 80 70 Ambient Temperature (C) 100 120 140 125 Ambient Temperature (C) Approximate Expression for Resistance-Temperature Characteristics T.C.R. (x10-6/K) 3000 3300 3600 3900 4200 4500 C0 0.934 0.927 0.921 0.915 0.909 0.903 C1 0.00258 0.00282 0.00306 0.00330 0.00353 0.00377 C2 2.77 3.17 3.58 4.00 4.44 4.89 x x x x x x 10-6 10-6 10-6 10-6 10-6 10-6 Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70C Low Temperature Exposure High Temperature Exposure Requirement R (% + 0.05) Limit Typical Within specified -- tolerance Within specified -- T.C.R. 1.0% 0.23% 1.0% 0.1% 1.0% 0.1% 3.0% 0.54% 3.0% 0.62% -- 0.05% (Ref) 0.6% (Ref) -- Test Method 25C +25C/+75C Rated voltage x 2.5 or maximum overload volume for 5 seconds, whichever is lower 260C 5C, 10 seconds 1 second -40C (30 minutes)/ +125C (30 minutes), 5 cycles 40C 2C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle -40C, 45 minutes +125C, 1000 hours 12/31/08 Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. KOA Speer Electronics, Inc. * 199 Bolivar Drive * Bradford, PA 16701 * USA * 814-362-5536 * Fax: 814-362-8883 * www.koaspeer.com 149 |
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