I don¡¯t understand why, but feedthru caps have gone way up.
On Jul 17, 2021, at 1:42 PM, Reginald Beardsley via groups.io <pulaskite@...> wrote:
I have a bunch of RF eval boards from China which I want to connectorize in shielded enclosures. ??I don't want to spend $20 packaging a $8-15 board.
I make the enclosures from scrap 28 gauge galvanized steel scrap from a local HVAC shop. ?Quarter inch copper foil tape on the seams soldered to the zinc plating provides an RF tight seal.
For power connectors I've standardized on ?2.1 mm coaxial power sockets. ?All Electronics has them for under $0.20 so I bought 100. ?For prototyping I epoxy them to SS FR4and use copper foil on the epoxy side for pads and microstrip. ?This works great for Manhattan style construction. ?Even a small amount of epxoy goes a long way, so I make them up in batches ?of various size boards that use up all the epoxy I've mixed.
For obvious reasons I don't want to use the same connector for control lines. ?I'd like to find a cheap option for feed thrus. ?Ideal would be the connectors HP used in the 8601A, but I've never seen those for sale anywhere.
Does anyone have suggestions?
Have Fun!
Reg
