KOA SPEER ELECTRONICS, INC. SS-251 R3 AHA 8/16/12 Linear Positive Tempco Thermistor Type LT73 1. General ■ Anti-leaching nickel barrier terminations ■ Twenty-five specifiable temperature characteristics 2. Dimensions ■ ■ CERTIFIED SMD thin film resistor with thermo-perceptivity Marking: black four-digit on bronze body color L c CERTIFIED c W Solder Plating Ni Plating t d Protective Coating Resistive Inner Film Electrode Ceramic Substrate Table 1 Part Dimensions - inches (mm) c W L d t +.008 -.004 +.20 -.10 2A (0805) 0.079±0.008 (2.00±0.20) 0.049±0.008 (1.25±0.20) 0.016±0.008 (0.40±0.20) 0.012 (0.30 . ) 0.020±0.004 (0.50±0.10) 2B (1206) 0.126±0.008 (3.20±0.20) 0.063±0.008 (1.60±0.20) 0.020±0.012 (0.50±0.30) 0.016 +.008 . -.004 (0.40 +.20 -.10 ) 0.024±0.004 (0.60±0.10) 3. Type Designation The type designation shall be in the following form: New Type LT73 2B T TD 101 J 1000 Type Size Termination Material Packaging Resistance Value Tolerance T.C.R. T: Sn (Other termination styles available, contact factory for options) TD: 7" Paper Taping 5,000 pcs/reel TE: 7" Embossed Plastic 4,000 pcs/reel 2 significant figures + 1 multiplier G: ±2% J: ±5% 2A: 0805 2B: 1206 PAGE 1 OF 4 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com 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. SS-251 R3 4. Standard Applications Part Designation LT732A Absolute Maximum Working Voltage Power Rating @ 70°C 100mW Absolute Operating Maximum Temp. Overload Range Voltage Resistance Range E-24* 100V 50V -40°C to +125°C LT732B 75V 125mW 150V T.C.R. (ppm/°C) Maximum** Resistance Tolerance LT732A LT732B 2KΩ - 24KΩ 1KΩ - 20KΩ 1KΩ - 13KΩ 510Ω - 4.7KΩ 510Ω - 4.7KΩ 510Ω - 3.0KΩ 510Ω - 3.0KΩ 510Ω - 3.0KΩ 100Ω - 1KΩ 51Ω - 510Ω 2KΩ - 51KΩ 1KΩ - 43KΩ 1KΩ - 27KΩ 1KΩ - 10KΩ 510Ω - 9.1KΩ 510Ω - 6.2KΩ 510Ω - 6.2KΩ 510Ω - 6.2KΩ 100Ω - 2KΩ 51Ω - 510Ω G: ±2% T.C.R. Tolerance 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 J: ±5% * See Appendix D for available decade values. ** T.C.R. is factory tested from 25°C to 75°C. 5. Environmental Applications 5.1 Derating Curve 100 % Rated Power 80 60 40 20 0 -40 -20 0 20 40 60 80 70 Ambient Temperature (°C) 100 120 140 125 10 Resistance Changing Rate (∆R) Resistance Changing Rate (∆R) 5.2 Temperature Characteristics 1000ppm/°C 8 6 500ppm/°C 4 2 150ppm/°C 0 -2 -4 -6 -8 -50 -25 0 25 50 75 100 125 60 50 4500ppm/°C 40 3300ppm/°C 30 2400ppm/°C 20 1600ppm/°C 10 0 -10 -20 -30 -50 -25 Ambient Temperature (°C) 0 25 50 75 100 125 Ambient Temperature (°C) PAGE 2 OF 4 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com 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. SS-251 R3 6. Approximate Expression for Resistance-Temperature Characteristics T.C.R. (x10-6/K) 3000 3300 3600 3900 4200 4500 C0 C1 0.9288 0.9232 0.9175 0.9099 0.9026 0.8948 0.0028 0.0030 0.0032 0.0035 0.0038 0.0041 C2 1.9983 2.9980 4.0000 4.0064 3.9964 4.0064 x x x x x x 10-6 10-6 10-6 10-6 10-6 10-6 7. Performance Characteristics Parameter Resistance T.C.R. 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 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% Test Method 25°C +25°C/+75°C Rated voltage x 2.5 or maximum overload volume for 5 seconds, whichever is lower 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 Confirming resistance drift is recommended since this product has a tendency to have bigger resistance change than general flat chip over 70°C. Please pay attention not to be applied ESD, it may cause of resistance change. PAGE 3 OF 4 Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 ■ www.koaspeer.com 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. SS-251 R3 8. Dimensions 1.5 +0.1 -0 8.1 Carrier Tape T2 E A D C B K T1 F G T1 Direction of feed H Dimensions - inches (mm) Tape B C D E F G H 2A 0.094±0.002 (2.4±0.1) 0.315±0.008 (8.0±0.2) 0.138±0.002 (3.5±0.05) 0.069±0.004 (1.75±0.1) 0.157±0.004 (4.0±0.1) 0.079±0.002 (2.0±0.05) 0.157±0.004 (4.0±0.1) 2B 0.138±0.002 (3.5±0.1) 0.315±0.008 (8.0±0.2) 0.138±0.002 (3.5±0.05) 0.069±0.004 (1.75±0.1) 0.157±0.004 (4.0±0.1) 0.079±0.002 (2.0±0.05) 0.157±0.004 (4.0±0.1) Tape A K T1 T2 2A (TD) 0.065±0.008 (1.65±0.2) –––– 0.030 (0.75 +0.2 -0 ) –––– 2A (TE) 0.063±0.006 (1.60±0.15) 0.047 (1.2 Max.) 0.030 (0.75 +0.2 -0 ) 0.010±0.002 (0.25±0.05) 2B (TD) 0.079±0.008 (2.0±0.2) –––– 0.035±0.004 (0.90±0.1) –––– 2B (TE) 0.075±0.008 (1.9±0.2) 0.047 (1.2 Max.) 0.039±0.004 (1.0±0.1) 0.010±0.002 (0.25±0.05) 8.2 Reel Central hole B C D E W A Dimensions - inches (mm) Tape A B W C D E TD 7.008±0.079 (178±2.0) 2.362±0.079 (60±2.0) 0.394±0.047 (10.0±1.2) 0.512±0.020 (13±0.5) 0.827±0.031 (21±0.8) 0.079±0.020 (2.0±0.5) TE 7.008±0.079 (178±2.0) 2.362±0.079 (60±2.0) 0.394±0.047 (10.0±1.2) 0.512±0.020 (13±0.5) 0.827±0.031 (21±0.8) 0.079±0.020 (2.0±0.5) Bolivar Drive ■ P.O. Box 547 ■ Bradford, PA 16701 ■ USA ■ 814-362-5536 ■ Fax 814-362-8883 PAGE 4 OF 4 ■ www.koaspeer.com Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.