Help with SMD diode ID

[smartjohn]

I am stuck with trying to identify a diode I believe to be shorted. The package is 4.5 mm X 2.6 PMDS (SOD 106). The code marking is 87. I expect it may possibly be from China, but do not see it listed in any of their online guides. Any help is appreciated!

[stj]

Re: Help with SMD diode ID

150v TVS diode

[smartjohn]

Re: Help with SMD diode ID

Can you help out with the resource where you found this for future reference? Thanks.

[stj]

Re: Help with SMD diode ID

PM in the "Turuta SMD Databook 2011" pdf

[vinceroger69]

Re: Help with SMD diode ID

PM in the "Turuta SMD Databook 2011" pdf

i have that smd ebook its seems good i still cant find the smd in this post though in it stj how do you search this book for this type of diode any tips.

[stj]

Re: Help with SMD diode ID

2pin device, PMDS

[smartjohn]

Re: Help with SMD diode ID

Where can I get a copy of this edition? Thanks.

[stj]

Re: Help with SMD diode ID

https://www.badcaps.net/forum/showpo...66&postcount=5

[vinceroger69]

Re: Help with SMD diode ID

also see this as budm has posted some good pdfs too
https://www.badcaps.net/forum/showthread.php?t=42365

[smartjohn]

Re: Help with SMD diode ID

I am looking in the 2011 edition but I do not see this part listed? I searched code 87 & SOD-106. Also tried PMDS and 87. Stj, Can you tell me what page you found it on? Thanks!

[stj]

Re: Help with SMD diode ID

i just looked up the letters PM

[budm]

Re: Help with SMD diode ID

Good clear pictures of the board will help us to see the function of that diode.

[jetadm123]

Re: Help with SMD diode ID

Probably wouldn't hurt if you provided the name and model number of the device you're trying to repair. Maybe someone will have a schematic of it.

[Agent24]

Re: Help with SMD diode ID

https://www.badcaps.net/forum/showpo...66&postcount=5

If it's a good reference you should buy it and support them to keep making more.

[smartjohn]

Re: Help with SMD diode ID

Sure, this is on a Y-SUS board for Samsung PN43E450A1FXZA plasma TV. Board part # is LJ41-10136A. Diode is on the underside of board and marked as D5126. Pictures will be added tomorrow. As far as PM for a code I don't get that logic? Here are the markings as they line up:
CATHODE
87
23

From the data sheets on SOD-160 packages, I am reading "87" as the SMD device code. I still do not see this listed anywhere in the 2011 Code Book. PMDS is simply another designation for SOD-160. I measured it with a micrometer and it is clearly the dimensions for SOD-160.

[stj]

Re: Help with SMD diode ID

well you should have made it clear that PMDS was not printed on it and not just added shit then.

[smartjohn]

Re: Help with SMD diode ID

Yes, thanks for checking anyhow. I am guessing it is some off brand Chinese manufacturer. If anyone has the "Turuta SMD Databook 2014" and could check there it may help. The set is 2012 so it's right on the line of maybe having newer parts. Also a BOM for the LJ41-10136A Y-sus board would list it as D5126. I probably sound nuts because I could by the board on eBay for $25-30 but I just love the adventure!

[tw2005]

Re: Help with SMD diode ID

ROHM product

RFN2L4S

400V 1.5A

A picture of it would be handy to be sure but what you describe sounds just like ROHM, similar to what you see on heaps of SC boards and Buffer boards too.

[vinceroger69]

Re: Help with SMD diode ID

ROHM product

RFN2L4S

400V 1.5A

A picture of it would be handy to be sure but what you describe sounds just like ROHM, similar to what you see on heaps of SC boards and Buffer boards too.

does look like what smartjohn is describing acording too this data sheet
http://www.datasheetlib.com/datashee...2l4s_rohm.html

[smartjohn]

Re: Help with SMD diode ID

tw2005 & vinceroger69.. You guys are the BOMB !!

That is exactly what I was looking for!! Data sheet helped me believe this was it!

A short is not a good thing for this part...

I will try a regular 400V PIV 1.5A to see if this is the culprit.