3.5mm female through-hole header to mate with these common connectors? - Page 1
Forum section: electronics / projects

author: Jester
author_rank: Frequent Contributor
timestamp: March 16, 2025, 09:02:33 pm
content: I'm not finding much on Digi-Key, perhaps my search criteria are lacking?Situation is I need to make a daughter board that will plug directly into these fairly standard 3.5mm male pin header on an existing board. Normally a wire to board connector is inserted into this connector, however I need to mount a daughter board directly to that style connector and then tweak the signal and then provide another one of the original male headers to allow the WTB connector to plug into the daughter board.Somewhat flexible on the pin count but 8 would be ideal.Part in the bottom half of image is what I'm describing, just need a source where I can purchase low quantity (as in say 5 or 10)

author: PCB.Wiz
author_rank: Super Contributor
timestamp: March 16, 2025, 10:01:13 pm
content: Quote from: Jester on March 16, 2025, 09:02:33 pm3.81mm seems to have a lot more choices.Digikey does show a 1830760, 7 pins in 3.5mm?Or you could use standard screw (wire clamp) connectors and a 3.5mm header.

author: langwadt
author_rank: Super Contributor
timestamp: March 16, 2025, 10:23:46 pm
content: if it is just for few, put something like this,https://www.el-grossisten.dk/media/catalog/product/p/r/printp_2.jpgon the pcb and screw on a standard connector

author: HwAoRrDk
author_rank: Super Contributor
timestamp: March 17, 2025, 12:26:46 pm
content: Readily available on AliExpress. Just a couple of examples at random:https://www.aliexpress.com/item/1005008481638605.htmlhttps://www.aliexpress.com/item/1005007295686586.htmlThe key terms to search for are "15EDGB 3.5" and "KF2EDGB 3.5".There are also right-angle variants of these, with part number suffix of "EDGA".

author: Simmed
author_rank: Frequent Contributor
timestamp: March 17, 2025, 12:35:44 pm
content: looks like 15EDGB is a hit on LCSCKF2EDGB is similar but different brandhttps://www.lcsc.com/search?q=15EDGB&s_z=n_15EDGB

author: tooki
author_rank: Super Contributor
timestamp: March 17, 2025, 12:55:06 pm
content: Quote from: Jester on March 16, 2025, 09:02:33 pmUse parametric search (drilling into the right category, then selecting parameters), not text search.Here’s what it found for me:https://www.digikey.ch/short/rvm2zh57No 8-pin versions. But at least with WAGO ones (and likely with others; I didn’t check) you can modify them yourself: either shorten one with too many pins by pulling off the unneeded positions, or take multiple small ones and join them (after removing the end plate from the ones you add on).

author: ajb
author_rank: Super Contributor
timestamp: March 17, 2025, 02:59:21 pm
content: I recall this coming up in one or two previous threads,here's one, there may be others that are useful.Phoenix Contact make what you're after. They are fairly long, but available in both right angle and vertical orientations in the IMC/IMCV series. I can't find a product series page to link to, but here's an example:https://www.phoenixcontact.com/en-us/products/pcb-header-imc-15-6-g-381-1862616.If you go to their 'PCB Connectors' category and filter for Pitch = 3.5mm, Contact connection type = Socket, and Product type = PCB Headers you should find them.In 3.81mm pitch, Wurth have several options which they call "reversed headers", including an 8-position part,example.

author: tooki
author_rank: Super Contributor
timestamp: March 17, 2025, 06:30:30 pm
content: Why do people keep mentioning that there are more options in 3.81mm pitch? OP needs to plug into anexisting board, so they have to use the 3.5mm pitch used by the existing board.