To make a long story short, I'm trying to identify this part so I can order some. Does anybody know what it is, so I can have at least some direction to start looking? Kinda hard to find any information or parts when you don't even know the name.

The long story is it spans the coil pins on a JS1-12V relay. When a button is pressed, 12v goes to the gold side, and I get a 9.3v circuit through this part.

Thanks so much, for any help you can offer. I also would like to know the name so I can read up on it and figure out what exactly it does, because I'm a little confused as to what exactly it's doing on the board at the moment.

There's 3 of these relays and circuits on this board. This relay works on the other 2 coil circuits, but not this one, I'm thinking this part is the issue. So I wanted to try a new one of these, whatever they are.

 

It's a MELF package which contains a diode. It might be as simple as a 1N914

 

Thanks very much, at least I'm on a track knowing what it is. I'll have to read up on them.

Any tips on how to identify what kind it is? Or a good information source on them?

 

My guess is the same as #12. It looks to be a diode used to act as a flyback diode across therelay coil pins. The banded side (cathode) would go to relay coil (+) and the (anode) side to the relay coil (-). As to a part number it could have been a 1N4004, 1N914 or 1N4148. Vishay makes a version in that package. I would guess about any parts house, depending on your location would have them. DigiKey and Mouser stock them.

Ron

 

If it is across the coil of a relay then it is snubber diode to protect the driver transistor from back-emf. The cathode (black band) should go on the more positive voltage. An ordinary 1N4001 would do.

 

Thanks guys, that 4148 sure looks the same. I'll poke around some more, and see what I learn and find.

Thanks for putting me on the trail.

 

Thanks guys, that 4148 sure looks the same. I'll poke around some more, and see what I learn and find.

Thanks for putting me on the trail.

Don't go by looks. They all look the same.