Solder pins compatible with dual-wipe DIP sockets - Page 1
Forum section: electronics / projects

author: philpem
author_rank: Frequent Contributor
timestamp: March 09, 2023, 03:24:47 pm
content: I'm looking for some solderable pins which are compatible with dual-wipe DIL sockets, and won't bend the springs. My use case is a ROM interposer board that'll let me fit ZIF sockets to a Bush Internet TV set-top box.Short story long - the thing runs RISC OS from two 42-pin 16-bit ROMs, and I want to prat about with the ROM image a bit.Sadly Pace didn't leave enough space to plug a pair of ZIF sockets into the ROM sockets: with a ZIF socket in "ROM A", the left row of pins of socket "B" are nearly completely covered.I figure if I want to fit ZIF sockets, I need a board that'll plug into the dual-wipe sockets on the board and take a ZIF socket on top, shuffling the ZIF sockets to one side so they don't clash mechanically.My usual method where turned-pin sockets are in use is to use the Harwin D01 series PCB pins:- SIL socket:https://www.harwin.com/products/D01-9972042/- SIL through-board pin strip:https://www.harwin.com/products/D01-9923246/And shove a sacrificial turned-pin socket on underneath to protect the pins.Sadly I know from experience that the D01 pins tend to bend the springs on dual-wipe sockets, which leaves them unusable or at least unreliable when you go and put a DIP chip back in.I had considered using the D01 pins and ramming them into a sacrificial dual-wipe socket as these usually have flat leads to solder to, but none of the ones I have on hand have long enough legs to securely fit into another dual-wipe socket.Other ideas gratefully considered! There must be a way to do this, and while I'm trying to avoid having to pull the box apart and replace the dual-wipe sockets with turned-pin or D01 strip, I've sort of resigned myself to the fact that such a thing may indeed be necessary...CheersPhil.

author: Terry Bites
author_rank: Super Contributor
timestamp: March 09, 2023, 03:54:45 pm
content: I'm a Samtec fan. Have a look at their board to board- great company for free samples!

author: tooki
author_rank: Super Contributor
timestamp: March 09, 2023, 08:17:15 pm
content: Quote from: philpem on March 09, 2023, 03:24:47 pmLook for “leadframes”. E.g.https://www.digikey.ch/short/v1dbnb40Unfortunately they only seem to stock the SIL (single inline, i.e. for board standing vertically) versions, but you could always bend them over if you don’t want to commit to an entire reel of a million to special-order the DIL version.And of course someone else might actually have them in stock, I didn’t check. Just wanted you to know that an official solution does exist. Oh yeah, and note that they’re usually for thin PCBs, not the standard 1.6mm.

author: TimFox
author_rank: Super Contributor
timestamp: March 09, 2023, 09:41:02 pm
content: I used to use a 14 and 16-pin "DIP header" to plug chosen small resistors and capacitors into a circuit, inserting it into a mating DIP socket.I don't know if they are available in 42-pin patterns.

author: factory
author_rank: Super Contributor
timestamp: March 10, 2023, 06:24:27 pm
content: A Japanese store with a few types of lead-frame pins I'd not seen before, got mentioned in another thread recently, google translate works well to view the website.https://akizukidenshi.com/catalog/c/csocket6/Has anyone seen the straight pins, for sale elsewhere in the world and in small quantities?David

author: philpem
author_rank: Frequent Contributor
timestamp: March 26, 2023, 02:41:32 am
content: They seem to be almost what I'm after - except that RS only stock the ones which fit on the edge of the PCB.The Akizuki ones seem almost perfect, though they don't ship overseas:QuoteSadly I don't know anyone in Japan who could forward themThough I did find this earlier thread:https://www.eevblog.com/forum/projects/headers-that-can-plug-into-dip-sockets/Which mentions these:https://www.tindie.com/products/OSHChip/16-pieces-of-flip-pins-14/(OSHChip "Flip Pins")These seem to be exactly what I need - though annoyingly the Tindie store doesn't ship to the UK. So I've dropped them an email...Thanks for all your help, folks!