"gb" skrev i en meddelelse
...
"Gary Morton" wrote in message
. uk...

These are useful pointers.
I am in the same situation as the original poster.
I have been given a bunch of RF power transistors (316-01 and 244-04
type
packages). I have been unable to identify them. The giver tried to find
the information where he works (they were being thrown away) but he
can't
find any information.

Transistor 1 markings: C / M2519 / 185 / 9014 / RR15
the bag is labelled RF 10W UHF

Transistor 2 markings: C / 185 / 4340P3 / 8817 / MALAYSIA
the bag is labelled RF 12W VHF

Transistor 3 markings: C / (Motorola Wing) / 8133P1 / 8919 / MALAYSIA
the bag is labelled RF PA 28W VHF

Transistor 4 markings: C / 4340P1 / 8824 M52 / (logo)
the bag is labelled RF 4W VHF
these have logos of ST or Thompson CSF

The second from last line four digit number is the date code. In some
cases there are more than one transistor and this line does vary.

I Have tried adding MRF, 2SC, SRF in front of the ID and then I have
done
a google, but this has found nothing.

Any ideas?

--Gary


Gary -

Transworld amplifiers used TRW transistors, but I believe those
transistors
started with a "9". Some of the former RF designers from that time can be
found at QRZ.COM (Question and Answer forum).

gb


I can probably provide a little more information: The designations 4340P3,
8133P1 and 4340P1 are most likely abbreviated internal type
designations/stock no. used by General Electric (and by the Danish company
Storno that was acquired by GE and later by Motorola). The full number might
be something like e.g. 19J704340P1, almost all designations starting with
19J...

Unfortunately, I have no longer the xref lists between the 19J-numbers and
the more common mfg. designations.

vy 73

--
Sven Lundbech
OZ7S, OZ1AWJ
President EDR