Want to buy 78m20 IC. 20v 0.5a

[Sushant Sharma]

Hello
I am looking for an IC 78m20ct which is 20v 0.5a.
I am told Lamington road in Bombay is the one place where I could find it.
Would anyone have a few pieces or atlest one to sell.
Attaching photo for reference

Thanks

 

[reubensm]

If you don't get the spare, why not just use a 7820 positive regulator? It offers 20v regulation with the same pinout, and can handle as far as 1a

 

[Sushant Sharma]

If you don't get the spare, why not just use a 7820 positive regulator? It offers 20v regulation with the same pinout, and can handle as far as 1a

Thanks Reuben. My requirement is of 20v supply. The LM317 is an option with variable output but is cumbersome with additional resistors..

I don't see 7820 available in India either. You know a website selling it? A kind forum member has offered to help me get one if available in one of the shops selling used goods. Fingers crossed.

 

[IndianEars]

If you don't get the spare, why not just use a 7820 positive regulator? It offers 20v regulation with the same pinout, and can handle as far as 1a

Reubensm, the 7820 he is looking for IS a 20 Volt, 3 pin regulator.

The 7812 & 7818 are easily available, the 7820 less so ....

 

[reubensm]

Yes, the regulators like 7808 (8v) and 7820 are not easily available. 7824 (24v) is quite common though.

If you get the BA178M20CP one perspective to note is that this regulator essentially comes in 2 types of packages TO220CP-3 and TO252-3.

The TO220CP-3 version has the same pinout as the 7820 while the heat fin of the TO252-3 version is the ground terminal instead of the usual center pin (pin-2). As the heat fin is the ground pin, pin-2 is a non-connection terminal.