Temperature Sensing Chip Resistor (P.T.C. Thermistor) Type LT73 Series Key Features Stable Alumina Substrate Solvent Resistant Coating Excellent Linearity Supplied on Tape and Reel Other TCR s available to order This thin film chip is manufactured by sputtering pure metals onto a high purity alumina base. This process ensures the element remains stable in performance over a long life. The LT73 is equally suited to temperature compensation or thermal protection when incorporated within the appropriate electronics. This range of sensors are finished in a tough epoxy seal and are available on tape for high speed auto placement. Characteristics Electrical 0805 Size (2A) 1206 size (2B) Resistance Range 510R - 3K0 510R - 6K2 Resistance Tolerance 5% Rated Power at 70C 0.1 Watt 0.125 Watt Max. Working Voltage 50 volts 75 volts TA 70C Max. Overload Voltage 100 volts 150 volts TA 70C Operating Temperature Range -40C ~ +125C TCR Measuring Temperature +25C ~ +75C (See Graph) TCR Tolerance 10% Insulation Resistance More than 10 Meg Marking Black four digit on bronze body color Dimensions in Dimensions Shown for 1773244 Rev. D 09/2018 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change Temperature Sensing Chip Resistor (P.T.C. Thermistor) Performance Characteristics Reuiee t R % + . Parameter Test Method Limit Typical Resistance Within specified tolerance 25C TCR Within specified tolerance +25C/+75C Overload (Short time) 1.0% 0.23% Rated voltage x 2.5 or maximum overload volume for 5 seconds, whichever is lower Resistance to Solder 1.0% 0.1% 260C 5C, 10 seconds Heat 1 second Rapid Change of 1.0% 0.1% -40C (30 minutes)/ Temperature +125C (30 minutes), 5 cycles Moisture Resistance 3.0% 0.54% 40C 2C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Endurance at 70C 3.0% 0.62% 70C 2C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle Construction and Dimensions Dimensions (mm) Type L W c d t +.20 2A (0805 2.000.20 1.250.20 0.400.20 0.30 0.500.10 -.10 +.20 2B (1206) 3.200.20 1.600.20 0.500.30 0.40 0.600.10 -.10 Dimensions in Dimensions Shown for 1773244 Rev. D 09/2018 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change