My secret Tektronix notes and the 7A13 service manual show a dual 6
pin TO-78 NPN transistor with a cross to A485.
Ft 1.2GHz
hfe 25 min
Vceo 15V
Vcbo 30V
Ic 50mA
A pair of 2N2857 transistors should work.
The LS3250 from Linear Systems is slower but might be an acceptible
substitute:
On Thu, 19 Jan 2012 12:22:32 -0500, Mark Wendt
<mark.wendt@...> wrote:
I looked at those on Mouser. The image and the datasheet only show 4
legs on the transistor, housed in a TO-72 case. The one in my 7A13 has
6 legs. The datasheet does show a 6-legged version in the TO-71 case,
but the part number differs in that its CEN741. Does that look like the
right one?
Thanks,
Mark
On 01/19/2012 11:32 AM, ajacks504 wrote:
Hi Mark,
Central Semi and Microsemi both make crosses as well, Mouser has the Central Semi's in stock.
Adam
--- In TekScopes@..., Jerry Massengale<jmassen418a@...> wrote:
Mark,
I have 2 NOS 267s. If you can not find a source I can sell you one for $10 plus postage.
-----Original Message-----
From: Mark Wendt<mark.wendt@...>
To: TekScopes<TekScopes@...>
Sent: Thu, Jan 19, 2012 12:43 am
Subject: Re: [TekScopes] Re: Cross Reference on a transistor
Gerhard,
Yes, bloody fat fingers caused me to create a typo. You are correct on
the part number of 0267. Thanks for the cross-reference!
Mark
On 01/19/2012 06:28 AM, g_kupka wrote:
The Q320 has the tek-nummber 151-267-00. This is the 2N2857 NPN, DUAL
Gerhard
--- In TekScopes@..., Mark Wendt<mark.wendt@> wrote:
Futzing around with a 7A13 plugin I have, and may have to replace a
transistor, Q320. Tektronix part number is 151-0268-00. There's a
Motorola logo on the top of the can. Anybody know if this transistor is
currently available or what a suitable sub would be?
David Hess