Can anyone identify this component

[Diogo Miguel]

 

[Diogo Miguel]

this belongs to a GYS inverter arc welder model 3200
I think this is a diode, unfortunately the two similar burned in the same place and I do not have a board schematic. I will upload more photos to see if it helps. Thanks so much for your help

 

[Arouse1973]

Have a look at MJD200G, It could be this part. http://www.onsemi.com/pub_link/Collateral/MJD200-D.PDF
Thanks
Adam

 

[davenn]

Have a look at MJD200G, It could be this part. http://www.onsemi.com/pub_link/Collateral/MJD200-D.PDF
Thanks
Adam

nice one, Adam, I was also thinking a power BJT or EFT

 

[Diogo Miguel]

Have a look at MJD200G, It could be this part. http://www.onsemi.com/pub_link/Collateral/MJD200-D.PDF
Thanks
Adam

Thanks Arouse1973 I will check that one tomorrow . I will reply to you if it works .
, post: 1687663, member: 33717"]Have a look at MJD200G, It could be this part. http://www.onsemi.com/pub_link/Collateral/MJD200-D.PDF
Thanks
Adam[/QUOTE]
Thanks

 

[davenn]

now that we see them on a circuit board
They cannot be BJT's or FET's. Not with 2 of the pins going to the same track

A single or dual diode is more likely/ They are obviously the same style as the other 3 undamaged devices
and probably similar spec's

What are the numbers on those other 2 devices ?



Dave

 

[Arouse1973]

Ok yep agree Dave. So it looks like a rectifier of some kind. One like this maybe?
http://www.onsemi.com/pub_link/Collateral/MBRB20200CT-D.PDF
Adam

 

[davenn]

Ok yep agree Dave. So it looks like a rectifier of some kind. One like this maybe?
http://www.onsemi.com/pub_link/Collateral/MBRB20200CT-D.PDF
Adam

another good find and ending in the correct characters

 

[Diogo Miguel]

Thanks again for your help , people in this forum are awesome . I have found a couple of diodes that I had and soldered them . I hope that will work . They didn't fit in the pcb so I had mounted them in the cooling block . Please comment .

 

[Diogo Miguel]

Another picture

 

[Diogo Miguel]

hello you guys. as I said, I used these diodes (http://www.onsemi.com/pub_link/Collateral/MBRB20100CT-D.PDF)
Today I tested the welder and it worked fine.
I was wondering your opinion about the use these diodes instead of http://www.onsemi.com/pub_link/Collateral/MBRB20200CT-D.PDF
that you guys had told me .
once again thank you all

 

[cjdelphi]

Looks like part of this family ....

 

[davenn]

View attachment 25818

Looks like part of this family ....

a different beast to what is in the unit ... is only a single diode with different pin connections

 

[davenn]

hello you guys. as I said, I used these diodes (http://www.onsemi.com/pub_link/Collateral/MBRB20100CT-D.PDF)
Today I tested the welder and it worked fine.
I was wondering your opinion about the use these diodes instead of http://www.onsemi.com/pub_link/Collateral/MBRB20200CT-D.PDF
that you guys had told me .
once again thank you all

the only difference is that they are rated at 100V instead of 200V
how long they last will depend on voltage spikes that may be present and how often and for how long the spikes
exceed the 100V rating


Dave