Anyone know of a cheap source of SMALL quantities of silver loaded conductive epoxy for sticking
microwave leadless diodes in place?

Most suppliers seem to sell it by the bucket load at huge cost and it goes off before you can use it
all.

(Silver loaded paint is a non-starter as its not conductive enough)

73 de Chris G8BKE

Web Site:-
http://www.qsl.net/g8bke/index.html

Yes thats the stuff I currently use but even in the fridge it goes off after a 18 months or so and
you are left with 90% of it which is no use.

C

Hi Chris ,

In the past , I have bought SERIOUS silver loaded epoxy ref. H20E from
EPOTEK to :

http://www.focenter.com/script_0010.asp?ProductID=8564


It is a 2 components 2,5 g item

BUT , you have to order a minimum of 15 items... ( you have to find 14 other
guys interested... )

73s Eric

I needed some a couple of years ago, as the Farnell stuff had gone off rather well since I had previosuly been at it - it was way beyond it's 6 month shelf life! So I got a quote from Epotek - they wanted approx 150 for their smallest size! Needless to say, I didn't follow through at this ridiculous price!

I did solve my problem another way, since I was putting together a DF9LN osc, which according to the original documentation needs silver epoxy to bond the osc PCB with the heatsink. But the crytsal is not in contact with the HS, only the upper side of the PCB - which I decided was not a good thermal solution! So I cut a piece out of the PCB, and arranged for the crystal to be in good thermal contact with the HS. Oh, and the epoxy? I used ordinary araldite two part epoxy to hold the PCB down. The case of the crystal is grounded to the PCB by a wire and to the HS by contact - I put a small clip over the end to hold it firmly in place - it all works very well!

73,
Dave