Can you help me identify component?

[boomtheroom]

just a little off the topic for a minute ..can someone identify the follow component and its value?

 

[betwixt]

It used to be a TOP222 controller IC for small 'flyback' switched mode power supplies but that one is most certainly absolutely dead!

It looks like either a 3 pin transistor or a small 8-pin IC (same device, different package) but it actually has a high voltage MOSFET and control circuit inside it. Typically used in small 'wall wart' power supplies because of their low cost. Be very careful if you work on the circuitry it came from as they generally have several hundred volts across them and are not isolated from the incoming AC power.

Brian.

 

[boomtheroom]

thanks for that betwixt :thumbsup:

what would be a suitable replacement? do i need to look for something in particular ? my soldering skills are very good but my knowledge in circuits and components is limited :->
here is the shop i usually get parts from
https://www.jaycar.co.nz/search?text=mosfet&CSRFToken=3c1c8e79-0809-417d-a06d-97e006935fab

 

[smijesh]

It is a three terminal Power Integration's offline PWM switch(TOP Switch family) or controller IC in TO220 Package
https://pdf1.alldatasheet.com/datasheet-pdf/view/110101/POWERINT/TOP222Y.html
It can used to build fly back converter with 15W/25W max

Hope it is broken/ distorted heat sink portion not available in your pitcher

 

[boomtheroom]

what does the 22283a part if the numbers mean on my part ? any significance?
and is there an alternative component i can use from this store local to me?
https://www.jaycar.co.nz/search?text...d-97e006935fab

 

[boomtheroom]

ok so this will be a exact replacement?

**broken link removed**

 

[FvM]

22283a is a date or production lot code. TOP222Y or TOP222YN (Pb-free) does fully specify the part.

There's effectively no replacement, except possibly for similar Topswitch parts from Powerint.

A combination of a discrete MOSFET and a standard current mode controller IC like UC3842 might theoretically work but needs many additional parts and will hardly fit the original circuit.

- - - Updated - - -

Yes, this one.

 

[boomtheroom]

So
I replaced the part and now the power supply turns on but outputs a constant 0.6v (it is a 3-15v 40amp variable output power supply) what else could be damaged to cause this symptom?
circled in red is the original area the offline PWM switch was located
cheers!