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Texas Instruments

TIL139 ORIGINAL TEXAS INST. REFLECTIVE OPTO SWITCH PHOTO TRANSISTOR (X1) ac1e17

TIL139 ORIGINAL TEXAS INST. REFLECTIVE OPTO SWITCH PHOTO TRANSISTOR (X1) ac1e17

£9.95
£9.95
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TIL139 OPTICAL SWITCH


Manufactured by Texas Instruments (TI) in the 1980's, these are original new old stock TIL139.

The TIL139 is an industry standard part, it consists of an LED emitter and a photo transistor receptor in one package, the principle of operation being that the LED emits a light which is reflected from a surface back to the photo transistor, if something breaks the reflected light, the photo transistors output state alters.

Found anywhere that has electrically controlled automation.  

Supplied and priced in packs of 1. 
If you require a large quantity please see our other listing.
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