Does anyone make a DIP40 socket with long, square legs? - Page 1
Forum section: electronics / general

author: MaximRecoil
author_rank: Regular Contributor
timestamp: November 24, 2016, 12:38:55 am
content: Like this:It is designed to plug into a normal DIP40 socket.

author: Alex Eisenhut
author_rank: Super Contributor
timestamp: November 24, 2016, 01:03:57 am
content: Isn't that a wire-wrap socket?

author: Ampera
author_rank: Super Contributor
timestamp: November 24, 2016, 01:04:35 am
content: Quote from: Alex Eisenhut on November 24, 2016, 01:03:57 amIt is. Just look up 40 pin DIP wire wrap socket, probably will find something. They are pretty expensive though.

author: Ampera
author_rank: Super Contributor
timestamp: November 24, 2016, 01:10:22 am
content: http://www.jameco.com/z/EMS-26405-Socket-IC-40-Pin-Machine-Tooled-Wire-Wrap-0-6-Width-515-Lead-_94503.htmlhere you go.

author: MaximRecoil
author_rank: Regular Contributor
timestamp: November 24, 2016, 01:21:27 am
content: Quote from: TwoOfFive on November 24, 2016, 01:10:22 amThanks, but that has machine pins, and I assume cylindrical legs (hard to tell from the picture though). The ones with cylindrical legs don't plug into the standard (single wipe) DIP40 socket on the motherboard very securely; I've tried them; I had to secure the daughter board with tape just to test it. The one in my picture has square legs, 0.65 x 0.65 mm, and it plugs into the standard DIP40 socket very securely. The socket on top which has the Z80A in it seems to be a standard "wipe" style socket too, i.e., it doesn't have round holes like machine pin sockets.Edit: I guess "wire wrap" means it has square legs? If so, that's what I need, but I'd rather have one like in my picture, i.e., not machine pins. A Google image search turned up this:http://www.nutsvolts.com/uploads/wygwam/NV_1201_Schumaker_Figure09.jpgThat blue one looks like just the thing, aside from it not being DIP40.

author: klunkerbus
author_rank: Unknown
timestamp: November 24, 2016, 01:33:57 am
content: There may be slight dimensional differences between products, but wire-wrap sockets *all* have square or rectangular legs that the fine wire is wrapped around.Contacts in wire-wrap sockets can be either stamped (bifurcated) or machined, but they'll both still have squarish legs. EDIT: Well, they at least used to be available in both. A quick search indicated machined contacts are real popular these days.

author: MaximRecoil
author_rank: Regular Contributor
timestamp: November 24, 2016, 01:49:52 am
content: Quote from: klunkerbus on November 24, 2016, 01:33:57 amYeah, I realized that after I posted, and edited my post accordingly.QuoteI know. I hate machine pins. Since finding out in this thread that they are called wire wrap sockets, I've found some options for what I'm looking for though. It seems that a company named "Cambion" still makes them -http://www.ebay.ca/itm/252480068791?rmvSB=true,which I've never heard of, and also, I've found some vintage NOS ones made by Texas Instruments which I'd rather have.

author: Ampera
author_rank: Super Contributor
timestamp: November 24, 2016, 01:53:01 am
content: Quote from: MaximRecoil on November 24, 2016, 01:21:27 amYou could try filing the pins down slightly to get a more squared off shape, or you could even try replacing the DIP Socket on the motherboard with a circular pin socket.If you seriously need one just like that,https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=Wire+wrap+socket+40+pingo ahead and look, butthey are not common, not cheap, and the more specific you get, the more uncommon and expensive the parts get.EDIT: Another idea is to use a different method entirely, for instance you could just wire up a 40 pin board to board connector with the wires coming off the bottom of a normal socket. You could also try to use if they exist extender pins and just apply them to a normal socket.

author: klunkerbus
author_rank: Unknown
timestamp: November 24, 2016, 02:07:37 am
content: I didn't save the part number, but it looked like Aries still had an active part with non-machine contacts. Cambion is big in the IC sockets realm - at least they used to be.I can't fathom a DIP socket that allows 0.025-inch square wire-wrap pins to be inserted into it. They certainly weren't designed for that.

author: MaximRecoil
author_rank: Regular Contributor
timestamp: November 24, 2016, 02:14:12 am
content: Quote from: TwoOfFive on November 24, 2016, 01:53:01 amThis is for a potential reproduction of an almost-impossible-to-find-now 32-year-old arcade machine part, so I'd rather use the same type of stuff the original used, since people would be plugging these into original motherboards. I just ordered 10 of one of the two out-of-production ICs it uses, so I'll probably order that NOS Texas Instruments package of 10 wire wrap sockets too. I'll need to find a source for the other out-of-production IC it uses, and they rest of the components are just common stuff like 74LS-series TTLs, resistors, and capacitors.

author: MaximRecoil
author_rank: Regular Contributor
timestamp: November 24, 2016, 02:22:19 am
content: Quote from: klunkerbus on November 24, 2016, 02:07:37 amIt's a standard, single-wipe DIP socket that it plugs into, the same socket which accepts a standard Z80A CPU. In fact, this daughter board is part of an official conversion kit ("official" meaning it was made by the same company that made the original gameboard), and to install it, you remove the original Z80A, and plug this daughter board in its place, like so:It is a tight fit, but not unreasonably so. It needs to be tight so that it doesn't fall out (the gameboard is mounted in the cabinet vertically on edge).

author: chickenHeadKnob
author_rank: Super Contributor
timestamp: November 24, 2016, 02:41:57 pm
content: I think you will find the wire wrap pins will wreck your main board socket. That is once you have installed your adapter board you can't go back to directly plugging in a dip. This kind of adapter is also sketchy in high vibration environments if you don't bolt it down to standoffs. Cambion is an old outfit. I have used those blue sockets in the early eighties, didn't like them as I do prefer machine pin. Cambion did, or still do make machine pin wire wrap sockets.

author: MaximRecoil
author_rank: Regular Contributor
timestamp: November 24, 2016, 03:42:12 pm
content: Quote from: chickenHeadKnob on November 24, 2016, 02:41:57 pmWell, it was Nintendo of Japan's idea, not mine. That daughter board has been installed in the motherboard for at least 30 years, and the motherboard DIP40 socket it plugs into is still fine. Occasionally when I need to troubleshoot that boardset, I swap individual boards around with a couple of other boardsets I have that have never been converted. In order to do that I have to "deconvert" one (remove the daughter board and plug in a Z80A directly, along with swapping some of the EPROMs), and convert the other, and the socket still accepts a Z80A perfectly, with just the right amount of tightness. Keep in mind that the original socket is an old-style single-wipe. A dual-wipe socket might not be so happy with these 0.025" square pins shoved into it.QuoteNo doubt. It is in a 300-lb. arcade cabinet though; it doesn't move.QuoteThanks for the information. I decided to buy a vintage, unopened package of 10 made by Texas Instruments, with gold-plated legs, part number: C9140-00. Aries made some under the same part number, which are still listed on some of the electronics store sites, such asDigi-Key, but "obsolete" and out-of-stock.

author: Buriedcode
author_rank: Super Contributor
timestamp: November 25, 2016, 02:53:14 am
content: Possibly too late, but I ordered a few of these a while back to break up and use as stacking connectors - plugs into *some* female headers, and allows easy plugging in of jumper wires at the top. Very niche, and frankly I'm surprised they even stock them.https://www.rapidonline.com/truconnect-123-87-640-41001-40-pin-0-6in-wirewrap-dil-skt-22-0250Bit pricey. At the time I got them for 0.14 ea.