Sorry if top post is frowned on ....

The B20 's are most likely 2SB20 trannies, see
http://homepage3.nifty.com/ebina2540...B0012-0100.htm

The others are LB123T see
http://www.alcava.it/Italia/partricam.htm

73
G6JAP (Technician not Artist !)


"Bob" wrote in message
m...
Hi all,

Can anyone identify the following semiconductors?

They are used in the Skytronics, Nikkai range of mains inverters as
driver devices for the Mosfet o/p switching.

I think these are TO 220 cases.
Q8/9 are Motorola devices and the numbering is :-
----------
| B20 |
| J E|
| 3003 |
----------
| | |

Q11/12 again are odd with no mftr marking :-
----------
| H LB |
| 123T |
| 7GT |
----------
| | |


Info for these inverters can be found here :-

http://www.bfisk.demon.co.uk/SkyTronic/skytronic.html

If anybody has anymore info to share drop me a line.

Cheers
Bob