[Kenwood] 3SK22 replaced by NTE222 Question ???

[Eric Lemmon]

Try replacing the 3SK22 with a 40673 or 3SK40.  A true substitute transistor
should not require crossing the leads.

73, Eric Lemmon WB6FLY
 

-----Original Message-----
From: kenwood-bounces at mailman.qth.net
[mailto:kenwood-bounces at mailman.qth.net] On Behalf Of w0ng at comcast.net
Sent: Sunday, June 14, 2009 12:28 PM
To: kenwood at mailman.qth.net
Subject: [Kenwood] 3SK22 replaced by NTE222 Question ???



Hello everybody - I'd appreciate some help with a component substitution
issue I'm having with my T-599D transmitter. 



I need to replace the predriver (Q1) a 3SK22 in my T-599D transmitter. I
have a new NTE222 to use. 



As I compare datasheets for the 3SK22 and the NTE222 it appears that the
DRAIN and GATE #1 are in the same lead position in both BUT the SOURCE and
GATE #2 leads need to be "criss-crossed" (and insulated from each other)
before plugging in the NTE222 into Q1's socket. 



I'd greatly appreciate some verification that the NTE222 is an acceptable
substitute AND that the criss-crossing of S and G2 leads is correct. 



Thanks & 73, Bill, w0ng, Colorado Springs. 
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