On Sat, 09 Jan 2010 09:36:36 -0600, Lostgallifreyan
wrote:

Boris wrote in news:f3377393-e256-42ea-bf34-
:

Hi, I am looking for substitute of 2SC2618 (smd).
maybe you can help me - what I can use instead?

Boris


I don't know (my Towers selector book is too old for that one, but I can
copy out its specs for you if you need) but I crossposted this reply to
sci.electronics.components where there's an increase in chance of a useful
answer.

The Hitachi data sheet doesn't indicate anything really special about
this part. It's a standard 35V part with 500mA continuous current
rating. The SC59 package can usually be substituted by a BC817's SOT23
size, with carefull soldering to cover the (possibly) longer pad
pattern.

RL

legg wrote in
:

The Hitachi data sheet doesn't indicate anything really special about
this part. It's a standard 35V part with 500mA continuous current
rating.

That's what I was thinking too, but the low gate capacitance suggests good
for RF, and the first post came from rec.radio.amateur.antenna, so I didn't
suggest spreading the search beam too wide because I don't know enough
about it.. But the Towers book didn't suggest that high in RF either, nor
does the data Ian Fields posted.

On Jan 10, 9:36*am, Lostgallifreyan wrote:
legg wrote :

The Hitachi data sheet doesn't indicate anything really special about
this part. It's a standard 35V part with 500mA continuous current
rating.

That's what I was thinking too, but the low gate capacitance suggests good
for RF, and the first post came from rec.radio.amateur.antenna, so I didn't
suggest spreading the search beam too wide because I don't know enough
about it.. But the Towers book didn't suggest that high in RF either, nor
does the data Ian Fields posted.

Hi,
This transistor goes to generator - quote " and the following 2SC2618
NPN transistor operate as a current source for the AD9851 DAC bias
circuit."
So what you guys think, something like bcx19 should be ok?

Boris wrote in news:2e06d082-c499-4c36-9346-
:

On Jan 10, 9:36*am, Lostgallifreyan wrote:
legg wrote innews:f2oik5p4vhch8dstra7e6idpr6kmsea7
:

The Hitachi data sheet doesn't indicate anything really special about
this part. It's a standard 35V part with 500mA continuous current
rating.

That's what I was thinking too, but the low gate capacitance suggests goo
d
for RF, and the first post came from rec.radio.amateur.antenna, so I didn
't
suggest spreading the search beam too wide because I don't know enough
about it.. But the Towers book didn't suggest that high in RF either, nor
does the data Ian Fields posted.

Hi,
This transistor goes to generator - quote " and the following 2SC2618
NPN transistor operate as a current source for the AD9851 DAC bias
circuit."
So what you guys think, something like bcx19 should be ok?


Beyond me to be certain, but it looks like 'yes'. That doesn't sound like
it's an RF or otherwise demanding task. Don't pick something with poor noise
specs though.