KOA SPEER ELECTRONICS, INC. SS-251 R2 AHA 6/01/06 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) 0.0790.008 (2.000.20) 0.0490.008 (1.250.20) 0.0160.008 (0.400.20) 0.012 (0.30 . ) 0.0200.004 (0.500.10) 2B (1206) 0.1260.008 (3.200.20) 0.0630.008 (1.600.20) 0.0200.012 (0.500.30) 0.016 +.008 . -.004 (0.40 +.20 -.10 ) 0.0240.004 (0.600.10) 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 pr ior notice. Please confir m technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. SS-251 R2 4. Standard Applications Part Designation LT732A Absolute Maximum Working Voltage Power Rating @ 70C 100mW Absolute Operating Maximum Temp. Overload Range Voltage 50V Resistance Range E-24* 100V -40C to +125C LT732B 125mW 75V 150V T.C.R. (ppm/C) Maximum** Resistance Tolerance LT732A LT732B 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 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% 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 25C to 75C. 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 pr ior notice. Please confir m technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. SS-251 R2 6. Approximate Expression for Resistance-Temperature Characteristics T.C.R. (x10-6/K) C0 C1 C2 3000 0.934 0.00258 2.77 x 10-6 3300 0.927 0.00282 3.17 x 10-6 3600 0.921 0.00306 3.58 x 10-6 3900 0.915 0.00330 4.00 x 10-6 4200 0.909 0.00353 4.44 x 10-6 4500 0.903 0.00377 4.89 x 10-6 7. Performance Characteristics Maximum R Parameter Test Method Thermal Shock 1.0% MIL-STD-202, Method 107, -55C to +155C, 5 cycles Low Temperature Operation 1.0% MIL-R-55342 4.7.4, 1 Hour @ -55C followed by 45 minutes of RCWV* High Temperature Exposure 1.0% MIL-R-55342 4.7.6, 100 hours @ 125C Short Time Overload 1.0% MIL-R-55342 4.7.5, 2.5 x RCWV for 5 seconds Resistance to Solder Heat 1.0% MIL-R-55342 4.7.7, 260C for 10 seconds Terminal Strength-Bend 1.0% 2mm min. deflection in either direction for 10 seconds Moisture Resistance 3.0% MIL-STD-202, Method 103, 40C, 90 - 95% RH, 1000 hours Life 3.0% MIL-STD-202, Method 108, 70C, 1000 hours @ RCWV, 1.5 hr ON, 0.5 hr OFF Temperature Cycling 1.0% 30 minutes @ -55C, 15 minutes @ +25C, 30 minutes @ +125C, 15 minutes @ +25C, 5 cycles * RCWV = Rated Continuous Working Voltage 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 pr ior notice. Please confir m technical specifications before you order and/or use. KOA SPEER ELECTRONICS, INC. SS-251 R2 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 0.0940.002 (2.40.1) 0.3150.008 (8.00.2) 0.1380.002 (3.50.05) 0.0690.004 (1.750.1) 0.1570.004 (4.00.1) 0.0790.002 (2.00.05) 0.1570.004 (4.00.1) 2B 0.1380.002 (3.50.1) 0.3150.008 (8.00.2) 0.1380.002 (3.50.05) 0.0690.004 (1.750.1) 0.1570.004 (4.00.1) 0.0790.002 (2.00.05) 0.1570.004 (4.00.1) Tape A K T1 T2 2A (TD) 0.0650.008 (1.650.2) ---- 0.030 (0.75 +0.2 -0 ) ---- 2A (TE) 0.0630.006 (1.600.15) 0.047 (1.2 Max.) 0.030 (0.75 +0.2 -0 ) 0.0100.002 (0.250.05) 2B (TD) 0.0790.008 (2.00.2) ---- 0.0350.004 (0.900.1) ---- 2B (TE) 0.0750.008 (1.90.2) 0.047 (1.2 Max.) 0.0390.004 (1.00.1) 0.0100.002 (0.250.05) 8.2 Reel Central hole B C D E W A Dimensions - inches (mm) Tape A B W C D E TD 7.0080.079 (1782.0) 2.3620.079 (602.0) 0.3940.047 (10.01.2) 0.5120.020 (130.5) 0.8270.031 (210.8) 0.0790.020 (2.00.5) TE 7.0080.079 (1782.0) 2.3620.079 (602.0) 0.3940.047 (10.01.2) 0.5120.020 (130.5) 0.8270.031 (210.8) 0.0790.020 (2.00.5) 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 pr ior notice. Please confir m technical specifications before you order and/or use.