Hi all hopefully I can get some help here identifying this 4-pin surface mounted component. It appears to be a Fairchild component with the numbers 2705 and 519R. I think it’s an integrated rectifier but could be something else as wellThe board is a soft starter for residential AC. The component has 110 to 220V input and appears to be directly downstream of a step down transformer. The component is approximately 3.5mm in width/length plus legs.
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Thank you for contacting DigiKey , sorry I am not finding any info with the part markings on that part .
Thanks Craig
Quite possibly an optoisolator.
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You are spot on. Based on the datasheet and component markings the 2705 is the component designation and 519R is the date code.
Huge thank you.
I have another component identification code request I will post shortly.
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Ok, thanks again for identifying my first component.
Below is my second ID question. I think it’s a 2N80 MOSFET but there are several options by different manufacturers. I am hoping to get as close as possible to original. I butchered the gate and source pins but both are surface mount if that helps.
Also I believe the markings are as follows:
INOIAX (“I” could be a 1, and O can be a zero)
FOD
2N80
There seems to be a logo in the top left that says “ON”.
Looking forward to what y’all think.
Check this one - FQD2N80-FQU2N80
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