identify ferrite core type please?

[JoanTheSpark]

I came across this ferrite core and was wondering what type it is.
Can't seem to find anything via image searches on google.

It's a transformer out of a switching power supply.
The pins have only been populated on one side, as for the low voltage side they came out lose and made their way to another place on the PCB.

Height of overall assembly: 24.6 mm +/- 0.1 mm
Height of a half core thus: 12.3 mm
Width/length of edge (square): 39.2 mm +/- 0.1 mm

It looks a bit like a RM core as it uses similar springs/clamps.

Thanks!

[tautech]

You can shift this thread yourself.
Bottom left of the page is Shift Topic, click there and just follow your nose. 

For SMPS it'll be working in the 20-60 KHz region and probably the best way to use it is to work backwards from the PCB in which it was in. Hunt out the datasheet for the controller and you just might see a 'Typical application' that matches your PCB layout. If you're super lucky the schematic might even list suitable cores and wire gauges used.
Some little detective work can teach you lots. 

[PKTKS]

I have seen worst than that one.

Usually I take apart the enclosure to reach the core

Then I seek all possible ends and do a tight measure on each
While tracing a schematics to see if that is just an inductor
os some type of complex self inductance or transformer

Vintage parts will not only be hard to find specs but also
almost impossible to find replacement

At that point sometimes you may fix it yourself or not.

BE AWARE!! that some ferrite cores crack very very easily.

pieces and parts may crack in disassembly procedure

My own experience... they got old and they crack more easily
Take care.
Paul

[TimNJ]

Are you sure that’s a transformer? Looks like a PFC choke.

It looks a lot like YuJing QP horizontal mount.

http://www.yujingtech.com.tw/e-product-05.html

Edit: Actually it’s almost definitely a YuJing part based on the ‘YJ’ on the label.

[JoanTheSpark]

Are you sure that’s a transformer? Looks like a PFC choke.

It looks a lot like YuJing QP horizontal mount.

You're right on both accounts.
The transformer was a misunderstanding with my dad.
It's a choke.

Thanks again.