type lt73 series this tiny thin film chip is manufac- tured 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 compensa- tion 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. key features stable alumina substrate solvent resistant coating wide value range excellent linearity 08 05 small size stocked in 3900ppm/c other tcr's available to order supplied on tape and reel custom design enquiries welcome characteristics - electrical characteristics - mechanical 0805 size (2a) 1206 size (2b) resistance range: 510r - 3k0 510r - 6k2 resistance tolerance: 5% 5% rated power at 70c: 0.1 watt 0.125 watt max. working voltage @ t a 70c: 50 volts 75 volts max. overload voltage @ t a 70c : 100 volts 150 volts operating temperature range: -40c ~ +125c -40c ~ +125c tcr measuring temperature: +25c ~ +75c (see graph) +25c ~ +75c (see graph) tcr tolerance: 10% 10% insulation resistance: more than 10 meg more than 10 meg seal cover: orange marking ink colour: black characteristics - cleaning 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: 260c 5c, 10 seconds 1 second solderabililty: 235c 5c, 3 seconds 0.5 second 4500 3300 2400 1600 tcr (ppm/c) -50 -25 0 25 50 75 100 125 60 50 40 30 20 10 0 -10 -20 -30 r (%) ambient temperature (c) power derating -55 -25 0 30 60 70 90 120 125 100 80 60 40 20 0 rated power (%) ambient temperature (c) lt73 3900 2a 1r0 j te common part 3000ppm/c 3900ppm/c t.c.r size lt73 - standard 2a - 0.1w 2b - 0.125w resistance value j 5% tolerance pack style 0.1 ohm (100 milli ohms) r10 1 ohm (1000 milli ohms) 1r0 1k ohm (1000 ohms) 1k0 2a (0805) - te - taped 4000 per reel 2b (1206) - td - taped 5000 per reel how to order dimensions chip lwhd d weight size /1000 2a-08.05 2.00.20 1.250.2 0.50.1 0.40.2 0.350.15 4.54g 2b-12.06 3.20.20 1.600.2 0.60.1 0.50.3 0.450.15 9.14g l d w h d temperature sensing chip resistor (p.t.c. thermistor) type lt73 series literature no. 1773244 issued: 07-08 dimensions are shown for reference purposes only. dimensions are in millimetres unless otherwise specified. specifications subject to change. tycoelectronics.com passives.tycoelectronics.com
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