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Old 24th February 2009, 08:42 PM   #1
Magura is offline Magura  Denmark
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Default JFET's ready for abuse

So, how do we get around keeping these little critters cool?

A respectable copper base seems to do the trick.

A little DIY reflow soldering and some machining later, I got this:


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Old 24th February 2009, 08:44 PM   #2
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And a while later, it had multiplied


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Old 24th February 2009, 08:47 PM   #3
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Zahlen , bitte ?
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Old 24th February 2009, 08:50 PM   #4
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Quote:
Originally posted by Zen Mod
Zahlen , bitte ?
If there is enough interest, I will consider the possibility to make a larger run of them.

So far I have just made 18, and from those, I have a need for 8 of right now, so that doesn't leave many for the greedy boys


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Old 24th February 2009, 09:16 PM   #5
Zen Mod is offline Zen Mod  Serbia
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Quote:
Originally posted by Magura


If there is enough interest, I will consider the possibility to make a larger run of them.

So far I have just made 18, and from those, I have a need for 8 of right now, so that doesn't leave many for the greedy boys


Magura

well - you always know where you can send two pairs of these nasty blocks

(just joking , I'll made my own )

describe your way of soldering little critters to blocks , without escape of precious white smoke ?
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Old 24th February 2009, 09:22 PM   #6
Magura is offline Magura  Denmark
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Quote:
Originally posted by Zen Mod


describe your way of soldering little critters to blocks , without escape of precious white smoke ?

A good temperature controlled oven, ramp up to 250C, hold temperature for 30 seconds, let the parts cool off in free air.

Using fluss un the copper part.


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Old 24th February 2009, 09:33 PM   #7
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Quote:
Originally posted by Magura


.....
Using fluss un the copper part.


Magura

rephrase that ;

I'm lousy thinkin' on Danish

flux-ed solder , smd solder ..... what ?
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Old 24th February 2009, 09:36 PM   #8
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Quote:
Originally posted by Zen Mod



rephrase that ;

I'm lousy thinkin' on Danish

flux-ed solder , smd solder ..... what ?

Just regular fluxed solder. Adding flux on the copper part prior to heating.


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Old 24th February 2009, 09:40 PM   #9
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Quote:
Originally posted by Magura



....... Adding flux on the copper part prior to heating.


Magura

calophone good enough ?

edit:

btw. pcbs finished ?
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Old 24th February 2009, 09:56 PM   #10
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Quote:
Originally posted by Zen Mod



calophone good enough ?

edit:

btw. pcbs finished ?

Calophone?


I have seen no mail from you regarding PCB since last weekend??


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