09-18-2020, 08:41 PM
(09-18-2020, 10:54 AM)rjm Wrote: I’m concerned about this component but don’t know what it is can you help?I sure can
that this the main12vdc power input protection ZENER diode.
it saves the ECU from blowing up to hell,when persons doing service on the car, connect the main battery backwards. (and far far worse backwards battery chargers at 24vdc for TOW Truck on the road service. also protects for alternators that fail and to 20volts ! yes, if the regulator fails it can do this for sure cheaper after market alternators lacking 3phase diodes blocks as zeners inside It.
it is a huge high wattage Zener Diode.
most have PZ628 diode Anode to power pin.
my guess is 5watt rated (yes huge) 25 to 31volt Vz rated. (protection to this level it is.)
wow found it. internet is amazing now.
https://www.semicon.sanken-ele.co.jp/sk_..._ds_en.pdf
http://www.fixkick.com