Temperature Sensing Chip Resistor (P.T.C. Thermistor) Type LT73 Series Type LT73 Series Characteristics Electrical 0805 Size (2A) 510R - 3K0 ±5% 0.1 watt 50 volts 100 volts -40°C ~ +125°C +25°C ~ +75°C (See Graph) ± 10% More than 10 Meg Resistance Range: Resistance Tolerance: Rated Power at 70°C: Max. Working Voltage @ TA 70°C: Max. Overload Voltage @ TA 70°C: Operating Temperature Range: TCR Measuring Temperature: TCR Tolerance: Insulation Resistance: This tiny thin film chip is manufactured 1206 Size (2B) 510R - 6K2 ±5% 0.125 watt 75 volts 150 volts -40°C ~ +125°C +25°C ~ +75°C (See Graph) ± 10% More than 10 Meg by sputtering pure metals onto a high purity alumina base. This process ensures the element remains stable in Characteristics Mechanical performance over a long life. The LT73 Seal Cover: Marking Ink Colour: is equally suited to temperature Orange Black compensation or thermal protection 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. Key Features Stable Alumina Substrate ■ Solvent Resistant Coating ■ Wide Value Range ■ Excellent Linearity ■ 08 05 Small Size The washing process is very important to ensure long term reliability because ionic impurity from flux may cause electrolytic corrosion of the metal film. Short time Overload: Rated Voltage x 2.5 maximum Overload Voltage for 5 seconds, whichever is less Resistance to Soldering Heat: 260°C ± 5°C, 10 seconds ± 1 second Solderabililty: 235°C ± 5°C, 3 seconds ± 0.5 second Power Derating 100 80 Rated Power (%) ■ Characteristics Cleaning ■ Stocked in 3900ppm/°C ■ Other TCR's Available to Order ■ Supplied on Tape and Reel ■ Custom Design Enquiries Welcome ∆R (%) when 60 40 20 60 50 40 30 20 10 0 -10 -20 -30 -50 TCR (ppm/°C) 4500 3300 2400 1600 -25 0 25 50 75 100 125 Ambient Temperature (°C) 0 -55 -25 0 30 60 70 90 120 125 Ambient Temperature (°C) Dimensions L d W Chip Size L W H D d Weight /1000 2A-0805 2.0±0.2 1.25±0.2 0.5±0.1 0.4±0.2 0.35±0.15 4.54g 2B-1206 3.2±0.2 1.60±0.2 0.6±0.1 0.5±0.3 0.45±0.15 9.14g H D How to Order LT73 3900 2A 103 1K0 J Common Part T.C.R Size Resistance Value Tolerance Pack Style 3000ppm/°C 2A - 0.1W J ±5% 3900ppm/°C 2B - 0.125W The first two digits are significant figures of resistance value and the third denotes the number of zeros following. Taped - 4000 on Reel LT73 - Standard e.g. 510R: 511 1K0: 102 3K0: 302 Literature No. 1773244 Issued: 04-05 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. www.tycoelectronics.com passives.tycoelectronics.com