[time-nuts] HP5328A LEDS driver transistor

Hal Murray hmurray at megapathdsl.net
Mon Jan 23 00:26:18 EST 2012

> Ultra-conservative and "overkill" but two of the nine failed.  OK it is 30
> years old (made is '83, I think) 

Use your fingers or similar as a quick-check thermometer.  Are working ones 
hot? warm?  If not, power/temperature is not likely to be the problem.

My guess is that somebody picked that transistor because it could handle the 
current and was conservative at the power dissipation.

These are my opinions, not necessarily my employer's.  I hate spam.

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