Trying to identify this part! I can’t even figure out the manufacturer “m” logo. Any ideas???
Welcome to the forum.
It looks like an SMT bridge rectifier array.
Those tend to use packages that are more square. Also the pin spacing is usually wider than other parts on the PCB to help the designer achieve their desired isolation between the AC and DC sides.
If there is a tilde “~”, or sine wave mark on it, the mark indicates the AC side of the rectifier.
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Hello, GordonJS.
To echo Paul’s excellent advice, I’ve compiled a listing of possibilities for you, here: Bridge Rectifiers
Do you have any idea of the voltage or current levels at play in your circuit? Those would be the big ones for helping to narrow down options for you.
Given what the circuit is, I highly doubt it’s a bridge rectifier. It’s much more likely some type of relay or optoisolator.
I have learned now that it’s made by matsushita. And i see “212” and 347C written on it. They made a relay that has 212 in it but I can’t find any with the 347 written on it.
Then please let us know what this device is so I do not waste time trying to help you.
Hello gordonjs - Panasonic does have a series of solid state relays that could be your part. Here is a link to the options we have. It’s likely that the 347 on your part is a date/lot code.
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I don’t know exactly what it does in the circuit, haven’t reverse engineered the board. It’s on a control board for a race car, so no ac voltages anyhow, and this part specifically is part of the “e-stop” circuit for lack of a better term. So my guess is some relay or isolator for the switch.
Hi @gordonjs ,
The top marking is not 212, it is 21 or Z1 with a flipped S after - more than likely a generic or internal marking as opposed to being part of the part number. If it is operated on a DC circuit, then more than likely it is an isolator/buffer of some kind or relay as you suggest. Unfortunately I was unable to locate anything we have as well based on the 347 marking.
A couple suggestions moving forward:
- The top left trace looks like it bubbled and opened. You may want to scratch some of the PCB masking on both sides of this trace using a razor, and with the power off to test the continuity of this trace. It is common for poorly designed PCB layouts for the components to handle the power, but not the traces.
- If the trace tests good, remove this part, and see if you are able to measure the voltages going up to it. May also need some reverse engineering along with part measurements in order for us to provide something hopefully similar as the part markings do not render any value.