[sdiy] Philips SC feedback (Tech. query on PUMX1 dual transistor) (fwd)

[Neil Johnson]

All,

On the trail of dual NPN's, my query on the structure of the PUMX1's is
answered below:

---------- Forwarded message ----------
Date: Wed, 18 Apr 2001 10:51:14 +0200
From: chris.firth at philips.com
To: nej22 at cam.ac.uk
Subject: Philips SC feedback (Tech. query on PUMX1 dual transistor)

Neil,

PUMX1 is manufactured using two die - from the same batch of slices
but not necessarily from the same slice. Basically it is two BC847 die.

If you want any form of matching we can offer BC847BS with gain matching
to B gain group. Basically it is two BC847B die.

Regards
Chris Firth
Philips Semiconductors UK
General Application Discrete Semiconductors
Tel Number      +44 20 8730 5117
Fax Number     + 44 20 8730 5169
Mobile                + 44 777 1805919

---------------------- Forwarded by Linda Haggerty/LHR/SC/PHILIPS on 04/18/2001 08:51 AM ---------------------------
Subject      : Tech. query on PUMX1 dual transistor

Hi,

Is the PUMX1 dual NPN transistor made from two single NPN die bonded into
one package, or a single die with two transistors on it?

Also, is there, if any, matching of the two devices??

Thanks.

------------------------------------------------------------