[TenTec] Centurion Bias Transistor Follow on post

[James Duffer]

Isn't it in the TO-204-2 package, where the case is the "drain"?
________________________________
From: TenTec <tentec-bounces at contesting.com> on behalf of Michael Marx <sndtubes at vacuumtubes.com>
Sent: Monday, November 20, 2017 12:09 PM
To: TenTec at contesting.com
Cc: TenTec at yahoogroups.com
Subject: [TenTec] Centurion Bias Transistor Follow on post

Guys,

I just posted a message about my Centurion with a bias problem.  As I stated I replaced the bias transistor which did not fix the problem.  Here is something interesting that I don’t understand.  I bought 5 of them from Mouser.  When I measure the transistor junctions with my Fluke 87 meter in the diode function, one junction seems normal as it measures .5 V in one direction and open in the other.  Normal, right? Now the other junction measures open in both directions.  It also measures open in ohmmeter mode.  Could I have bought 5 bad transistors?  Is that even possible?  What am I doing wrong in testing these transistors?  They are just an NPN bipolar transistor, right?  FYI it is an MJ15001G by ON.  This is exactly what Ten Tec sent a few years ago when I had to replace the transistor.

Very confused.

73
Mike WB0SND


Michael Marx
sndtubes at vacuumtubes.com
636-939-9190

SND Tube Sales
105 N. Division St.
Bonne Terre, MO  63628




_______________________________________________
TenTec mailing list
TenTec at contesting.com
https://nam03.safelinks.protection.outlook.com/?url=http%3A%2F%2Flists.contesting.com%2Fmailman%2Flistinfo%2Ftentec&data=02%7C01%7CDgparsons51%40hotmail.com%7C47dd07141ca940fcc8c608d530420f06%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C636467982654149427&sdata=pwMP24ZvzgIl4rgI1BT%2FvjjgT11GmwVmUejK3HQ1A1I%3D&reserved=0