Info about these two semicomponents

[lacueva]

HI all, I have a PSU with a couple of lookalike transistor which I can´t find any info.

These are the ones. Any info would be much appreciate it. Thanks

MPSW42522 & MPSW42541

 

[Khron]

Probably / most likely MPSA42; 522 and 541 are most likely some date / batch codes.

Although, MPSA42 are in a normal TO92 package; are these MPSW42 some higher-power-dissipation version, in a TO92L (long) package?

(Later edit)

Yup...

 

[lacueva]

Probably / most likely MPSA42; 522 and 541 are most likely some date / batch codes.

Although, MPSA42 are in a normal TO92 package; are these MPSW42 some higher-power-dissipation version, in a TO92L (long) package?

(Later edit)

Yup...

Hi Khron thanks so much for the reply. That looks like the right ones. I´m going for those ones and see what happens. Thanks

 

[Khron]

Nothing that couldn't have been achieved by googling "mpsw42"...

 

[JohnRoberts]

I like Kron's guess but try to check the transistor junctions with a VOM diode scale.

JR

 

[lacueva]

I like Kron's guess but try to check the transistor junctions with a VOM diode scale.

JR

Checked and both short circuit. Thanks

 

[lacueva]

Nothing that couldn't have been achieved by googling "mpsw42"...

Yes indeed, the problem I never came across with one of these and tried searching the whole number and nothing came up. Thanks again