Skytronics (Nikkai) inverter transistors

[Bob]

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

 

[MacMan85]

Actually, they are TO-126 cases!
Any help at all would be most gratefully received!!

Richard

 

[NoOne]

Sorry if top post is frowned on ....

The B20 's are most likely 2SB20 trannies, see
http://homepage3.nifty.com/ebina2540/data/2SB/2SB0012-0100.htm

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

73
G6JAP (Technician not Artist !)

 

[Franc Zabkar]

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 :-

I'm guessing this could be an MJE3003.

Q11/12 again are odd with no mftr marking :-

The LB prefix is often used by Sanyo.

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

- Franc Zabkar

 

[Bob]

Thanks for all the replies guys.

Much appreciated.
Bob