Help with the identification of this SMD component

Thread Starter

Juanolo

Joined Aug 22, 2014
7
Hello:

I need to repair a PCB. The component i want to replace is the one of the attached image.

I think i found the reference for CU06 m43 as a rectifier of 600V. But i think it is not correct.

In the datasheets i found the CU06 as a abrv. of CMR1U-06M but i did not find anything related with the number 43. can you identify it?




Can you give me any advice of how to repare the pcb line? (photo 2)

Thanks a lot
 

R!f@@

Joined Apr 2, 2009
9,918
It is a diode. Try the SMD version of 1N4004

The track can be replaced with a solder jump and just old single strand copper wire. No biggie.
 

Thread Starter

Juanolo

Joined Aug 22, 2014
7
It is a diode. Try the SMD version of 1N4004

The track can be replaced with a solder jump and just old single strand copper wire. No biggie.
Thanks a lot for the info! where can i find a true information of SMD identification?

can you explain me how you identified it? with the number of the top is very difficult to find information about the component...

Thanks a lot!
 

Thread Starter

Juanolo

Joined Aug 22, 2014
7
Thanks for the answer.. thus is a rectifier and not a 1n4004 diode? if i not find anything similar, can i replace it for other of different manufacturer or different charasteristics?
 
Last edited:

Thread Starter

Juanolo

Joined Aug 22, 2014
7
The problem was an high voltage shock.

Is the power supply of a DLP projector. I can do a photo of the board.

in view, the only two components which were burned are this diode with the damaged pc line and the fuse.

The diode there is a CMR1U-04M.... Which i think is CU4, in this case i need to buy the CMR1U-06M?

Thanks
 

bertus

Joined Apr 5, 2008
22,270
Hello,

It looks like the only difference between the one with and without the M extention in the type of housing.
I think you will need the one with the M, the M is on the second line, before the mentioned 43.

Bertus
 

ian field

Joined Oct 27, 2012
6,536
Hello:

I need to repair a PCB. The component i want to replace is the one of the attached image.

I think i found the reference for CU06 m43 as a rectifier of 600V. But i think it is not correct.

In the datasheets i found the CU06 as a abrv. of CMR1U-06M but i did not find anything related with the number 43. can you identify it?




Can you give me any advice of how to repare the pcb line? (photo 2)

Thanks a lot
Going on previous experience, an 06 could indicate a 60V rating - that would possibly suggest a Shottky barrier type.

Finding an identical device elsewhere on the board would solve your problem, borrow it to measure - SB diodes have lower than normal Vf of as low as 0.2V, they also show a little bit of reverse leakage - which would absolutely not be OK on a regular silicon type.
 

Thread Starter

Juanolo

Joined Aug 22, 2014
7
Hello,

It looks like the only difference between the one with and without the M extention in the type of housing.
I think you will need the one with the M, the M is on the second line, before the mentioned 43.

Bertus
Thanks, sorry if i do not explained well before. I referred to:

The burned component is CU6 M 43 which it match with CMR1U-06M (fast response rectifier 600V.

The one you listed me is the CMRU-04M (fast response rectifier 400V)

Does it matter which i select? I supose i need to select the 600V one?

What is de difference between SMA AND SMB packaging.?

Thanks bertus for the help!
 

ian field

Joined Oct 27, 2012
6,536
Thanks, sorry if i do not explained well before. I referred to:

The burned component is CU6 M 43 which it match with CMR1U-06M (fast response rectifier 600V.

The one you listed me is the CMRU-04M (fast response rectifier 400V)

Does it matter which i select? I supose i need to select the 600V one?

What is de difference between SMA AND SMB packaging.?

Thanks bertus for the help!
If its rated 600V - don't use the 1N4007 as suggested elsewhere, it won't be anywhere near fast enough to replace an ultra fast rectifier - The UF4007 is allegedly "Ultra Fast" but they've been on the market a long time, the definition of ultra fast may have moved on since then.
 

R!f@@

Joined Apr 2, 2009
9,918
The 1N4004 was just for reference.
My Mistake.

Regarding post #10
A 400V diode might suffice depending on the circuit used.
If U can tell us a bit more about where the diode goes we can make sure if the replacement will work or not.
 

Thread Starter

Juanolo

Joined Aug 22, 2014
7
Hello!
The 1N4004 was just for reference.
My Mistake.

Regarding post #10
A 400V diode might suffice depending on the circuit used.
If U can tell us a bit more about where the diode goes we can make sure if the replacement will work or not.
Thanks a lot for all the answers

I uploaded some images of the whole circuit and the damaged part.

You think only changing the cmr1u-06 it will run? what you recommend me to repair the circuit?

20140831213049.jpg

20140831213034.jpg

Is the power supply of a DLP projector, i could not get the service manual because the projector is old (6 years).

Thanks a lot for the help!
 
Top