1733 Reader's Spreads pg1-203:document 1/27/09 4:11 PM Page 148 LA73 thick film linear positive tempco thermistor EU features circuit protection • • • • Anti-leaching nickel barrier terminations Twenty-five specifiable temperature characteristics Marking: Black three-digit on orange body color 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 W Solder Plating Ni Plating t d Protective Coating L (Inch Size Code) Dimensions inches (mm) W c d t 1J (0603) .063±.008 .031±.004 .012±.004 .012±.004 .018±.004 (1.6±0.2) (0.8±0.1) (0.3±0.1) (0.45±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) .012 2B (1206) .126±.008 .063±.008 (3.2±0.2) (1.6±0.2) .016 Resistive Inner Film Electrode .02±.008 (0.5±0.3) (0.3 (0.4 +.008 -.004 +0.2 ) -0.1 .02±.004 (0.5±0.1) +.008 -.004 +0.2 ) -0.1 .024±.004 (0.6±0.1) Ceramic Substrate ordering information New Part # LA73 Type 1J T Size Code 1J: 0603 2A: 0805 2B: 1206 Termination Material T: Sn (Other termination styles available, contact factory for options) TD Packaging TD: 7" paper (5,000 pieces/reel) 101 Resistance Value 2 significant figures + 1 multiplier J 3300 Tolerance T.C.R. 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. 150 11/20/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 1733 Reader's Spreads pg1-203:document 1/27/09 4:11 PM Page 149 PMS 300 neg. Black neg. LA73 thick film linear positive tempco thermistor applications and ratings LA731J 25 7.6 LA732A 8.2 LA732B 9.0 50 +70°C 50 Operating Temp. Range: -55°C - +125°C Resistance Range E-12 LA731J LA732A LA732B T.C.R. (ppm/°C) Max. 1KΩ - 10KΩ 680Ω - 6.8KΩ 470Ω - 4.7KΩ 470Ω - 3.9KΩ 330Ω - 2.7KΩ 330Ω - 2.7KΩ 220Ω - 1.8KΩ 220Ω - 1.2KΩ 100Ω - 1.2KΩ 100Ω - 390Ω 68Ω - 220Ω 33Ω - 120Ω 22Ω - 82Ω 1KΩ - 10KΩ 680Ω - 6.8KΩ 470Ω - 4.7KΩ 470Ω - 3.9KΩ 330Ω - 2.7KΩ 330Ω - 2.7KΩ 220Ω - 1.8KΩ 220Ω - 1.2KΩ 100Ω - 1.2KΩ 100Ω - 390Ω 68Ω - 220Ω 33Ω - 120Ω 22Ω - 82Ω 1KΩ - 10KΩ 680Ω - 6.8KΩ 470Ω - 4.7KΩ 470Ω - 3.9KΩ 330Ω - 2.7KΩ 330Ω - 2.7KΩ 220Ω - 1.8KΩ 220Ω - 1.2KΩ 100Ω - 1.2KΩ 100Ω - 390Ω 68Ω - 220Ω 33Ω - 120Ω 22Ω - 82Ω 1000 1200 1400 1600 1800 2000 2200 2400 2600 2800 3000 3300 3600 Resistance Tolerance J: ±5% T.C.R. Tolerance ±200ppm/°C ±10% environmental applications Temperature Characteristics Resistance Changing Rate (∆R) Derating Curve 100 % Rated Power 80 60 40 20 0 -60 -40 -55 -20 0 20 40 60 80 70 Ambient Temperature (°C) 100 120 140 125 40 3600ppm/°C 30 3000ppm/°C 20 2000ppm/°C 10 1000ppm/°C 0 -10 -20 -30 -40 -75 -50 -25 0 50 25 75 100 125 Ambient Temperature (°C) Approximate Expression for Resistance-Temperature Characteristics T.C.R. (x10-6/K) C0 C1 C2 3000 3300 3600 0.926 0.918 0.910 0.00294 0.00325 0.00359 1.1 x 10-7 4.1 x 10-7 1.7 x 10-7 (Values are not guaranteed but typical) RT=R25 (C0+C1T+C2T2) RT: Resistance value at T°C R25: Resistance value at 25°C T: Ambient temperature (°C) C0, C1, C2: Constants Performance Characteristics Parameter Resistance T.C.R. Overload (Short time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C High Temperature Exposure Requirement ∆ R ±(% + 0.05Ω) Limit Typical Within specified — tolerance Within specified — T.C.R. ±1.0% ±0.5% ±1.0% ±0.5% ±1.0% ±0.5% ±3.0% ±1.5% ±3.0% ±1.5% — ±3% (Ref) Test Method 25°C +25°C/+75°C Rated voltage x 2.5 or maximum working volume x 2 for 5 seconds, whichever is lower 260°C ± 5°C, 10 seconds ± 1 second -55°C (30 minutes)/ +125°C (30 minutes), 100 cycles 40°C ± 2°C, 90 - 95% RH, 1000 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 -40°C, 45 minutes Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/31/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 151 circuit protection Thermal Rated Max. Part Dissipation Ambient Working Designation Constant Temp. Voltage (V) (mW/°C)