SMT capacitors RE: [sdiy] Have you guys already used this ?

[George Hearn]

Not sure what capacitors the design you're talking about uses but it's the
film (polyester etc.) SMT capacitors that are most sensitive to heat.
Ceramics are hard to hurt and electrolytics generally tend to be bigger and
thus take longer overheat. The technique that works for me:
1. Put a small amount of solder on one pad, 
2. Hold the capacitor in place with tweezers and 'reflow' the solder with
your iron to hold the capacitor in position (takes only a second or two).  
3. Then solder the other pad.  

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of David Ingebretsen
Sent: 26 September 2008 20:11
To: Synth-diy at dropmix.xs4all.nl
Subject: SMT capacitors RE: [sdiy] Have you guys already used this ?

On this note, I am going to be building a JH Frequency Shifter which uses
some SMT capacitors. I've read they are vulnerable to overheating during the
soldering. How how should I have my soldering iron when I'm soldering them?
How sensitive are they? Is there a visual cue (beyond black and smoking)
that I've overheated them?

David

-----Original Message-----
From: synth-diy-bounces at dropmix.xs4all.nl
[mailto:synth-diy-bounces at dropmix.xs4all.nl] On Behalf Of Csaba Zvekan
Sent: Friday, September 26, 2008 7:14 AM
To: Synth-diy at dropmix.xs4all.nl
Subject: Re: [sdiy] Have you guys already used this ?

JB,

In my opinion way too expensive . I have brewed my own little SMT oven  
with a PIC and a GLCD displaying the temperature and controlling two  
relays of a little pizza oven.

Deleted....

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