Its in a ECU powered by 2 lipo batteries, not sure what else you may need to identify them gyov, 026ca

 

hi Eddy,
The best I can find is this info.

Three links and the replied text.
E


https://www.google.com/search?q=026...LwgcIMC4xMy42LjHIBziACAE&sclient=gws-wiz-serp


The phrase "026CA" generally refers to an SMD (Surface Mount Device) marking code for a Transient Voltage Suppressor (TVS) diode used in automotive Engine Control Units (ECUs).These semiconductor components—often manufactured by companies like EIC Semiconductor or Luguang (marked as 3.0SMCJ26CA or similar)—are bidirectional TVS diodes designed to protect sensitive ECU microprocessors from high-voltage spikes, reverse polarity, and electrical surges.

https://www.google.com/search?q=GY0...uAfdAcIHBTItMi4xyAcSgAgB&sclient=gws-wiz-serp

Because GY0V is often a laser-etched code rather than a full manufacturer part number, it typically identifies a specific batch of automotive diodes, transistors, or voltage regulators (such as a Zenner diode) used in Engine Control Units (ECUs). These discrete semiconductors handle power regulation, switching, and signal protection.For tips on how to safely test components like the GY0V on an ECU board:

https://www.google.com/search?q=GY0...ate=ive&vld=cid:6477386b,vid:_zR8wFCST5A,st:0

 

but... why not share actual photo (front and back) of the PCB so we can see what connects to it? this could narrow down search and offer clues to size of the component.

 

Hmm, not getting any meaningful hits on either part. As already suggested its always better to show them in-situ (not least because they often disintegrate on removal, especially if burnt/blown-up).

BTW, welcome to AAC.

 

both parts are 3mm long

 

Not the best picture should I try again LOL

 

Finally a good picture, my phone is not very good

 

ericgibbs

This is a small ECU

 

Thats better! Now, what is this the ECU for? and what is normally connected to those 4 pins top left and to the 9 pins bottom left.

Did the broken GY0V part come from that location or the blank space above and to the right?

Looks to me that the 26CA parts are transistors or MOSFETs rather than TVS diodes which is what the part number suggests. 026 comes back to a ZXTP25140BFH PNP transistor.

 

Its for a very small turbine engine, the top left pins operate 2- 5 volt solenoids, bottom right is for a auxiliary channel airspeed and the last is for a hand held data terminal to monitor the engine while running, I have 3 of these that were fried, I changed these two parts with ones of a parts board and they both now work, however I need another set to fix the last board

 

it is missing one of the 5 pinned parts, there are two of each per board

 

Are the solenoids connected to ground on one side?

 

Yes

 

So are these available from digikey or mouser?

 

Both stock them, around $1.2 each +p&p

 

I found these are they right?
https://www.ebay.com/itm/202242224268

 

I found these are they right?
https://www.ebay.com/itm/202242224268

Err, no. Those are TVS diodes, not transistors.

 

Can you help me find them on digikey or mouser, those numbers don't seem to get me anywhere, I don't know enough about this stuff

 

There's nothing on eBay or Amazon that's suitable. These are 140v 1A devices.

https://www.mouser.com/c/semiconduc...ors/bipolar-transistors-bjt/?series=ZXTP25140

https://www.digikey.com/en/products/detail/diodes-incorporated/ZXTP25140BFHTA/1089903

 

Great I will order them. Thank you very much for your help.
Do you know much about pic 18 and icd-u64?
I have another little project that I would like to tackle.