LT linear positive miniature tempco thermistor EU features thermal protection • • • • High stability and excellent linearity Miniature size Marking: Light-gray body color with color-coded bands Products with lead-free terminations meet EU RoHS requirements dimensions and construction L D Trimming Line l Ceramic Core d Marking Resistive Film End Cap Dimensions inches (mm) C (max.) D d Type L (ref.) LT1/6 .126±.012 (3.2±0.3) .146 (3.7) LT1/4 .248±.008 (6.3±0.5) .280 (7.1) l .067±.008 .018±.002 (1.7±0.2) (0.45±0.05) 1.18±.118 .091±.012 .024±.002 (30.0±3.0) (2.3±0.3) (0.6±0.05) Lead Wire Insulation Coating C ordering information New Part # LT Type 1/6 C T26 Power Rating 1/4 1/6 Termination Material C: SnCu Taping and Forming T26, T52 A Packaging A: Ammo R: Reel 102 J Nominal Resistance 2 significant figures + 1 multiplier “R” indicates decimal on value <10Ω 3600 Tolerance J: ±5% T.C.R. (ppm/˚C) 1000 4,500 applications and ratings T.C.R. (ppm/°C)* 1000 1200 1400 2000 3600 3900 4200 4500 T.C.R. Tolerance Resistance Range E-24 (LT1/6S) Resistance Range E-24 (LT1/4S) ±15% 100Ω - 20KΩ 100Ω - 39KΩ ±10% 100Ω - 9.1KΩ 100Ω - 5.1KΩ 100Ω - 3.3KΩ 100Ω - 750Ω 100Ω - 240Ω 100Ω - 15KΩ 100Ω - 6.8KΩ 100Ω - 6.2KΩ 100Ω - 1KΩ 100Ω - 510Ω Resistance Tolerance Rated Ambient Temperature Operating Temperature Range J: ±5% +70°C -40°C to +125°C * T.C.R. measuring temperature: +25°C to +75°C For further information on packaging, please refer to Appendix C. Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 188 12/29/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com LT linear positive miniature tempco thermistor environmental applications Resistance Changing Rate (%) 100 % Rated Power 80 60 40 20 0 -40 -20 0 20 40 60 80 70 Ambient Temperature (°C) TCR (X10-6/K) 4500 50 40 3600 30 20 2000 10 1000 0 -10 -20 -30 -75 100 120 140 125 thermal protection Temperature Characteristics of Resistance Derating Curve -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 3600 3900 4200 4500 0.9175 0.9099 0.9026 0.8948 0.0032 0.0035 0.0038 0.0041 C2 4.0000 4.0064 3.9964 4.0064 x x x x 10-6 10-6 10-6 10-6 (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 Overload (Short time) Resistance to Solder Heat Rapid Change of Temperature Moisture Resistance Endurance at 70°C Requirement ∆ R ±(% + 0.05Ω) Limit Typical Within specified — tolerance ±1% ±0.75% ±1% ±0.75% ±1% ±0.75% ±3% ±2% ±3% ±2% Test Method 25°C Rated voltage x 2.5 for 5 seconds 260°C ±5°C, 10 seconds ± 1 second -40°C (30 minutes), +125°C (30 minutes), 5 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 Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 12/29/08 KOA Speer Electronics, Inc. • 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com 189