[sdiy] M3-threaded PCB mounts with solder tails?

[rsdio at audiobanshee.com]

Thanks to everyone who replied.

Looks like the literal part number being used by Intellijel is the Keystone Electronics
M3 Snap In PC Mount-Terminal Only P/N 7790
https://www.keyelco.com/product.cfm/product_id/1108

The data sheet at KeyElCo.com shows the mounting hole size and spacing.

Mouser has it https://www.mouser.com/ProductDetail/534-7790

… although it’s cheaper to buy with a screw and straight legs https://www.mouser.com/ProductDetail/534-7761


On Feb 19, 2020, at 4:59 PM, John P Shea <info at extrinia.com> wrote:
> 
> Wurth Elektronik
> 
> There are also Asian brands.
> 
> As these are hollow, they come with a removable plastic tab (which allows suction pick up).
> 
> Adafruit also has ‘em and did a vid.
> 
> Regards,
> JPS
> 
> On Thu, 20 Feb 2020 at 7:26 am, <rsdio at audiobanshee.com> wrote:
>> Hello,
>> 
>> I recently purchased an Intellijel 7U Performance Case, and it’s nearly perfect.
>> 
>> Who makes the M3-threaded PCB mounting brackets that are soldered (in three places) on the MIDI JACKS rev003 board? I think I need to buy some of these. Are they a custom part? … or are they available some place like Mouser, Jameco, or Digi-Key?
>> 
>> 
>> I’m in the process of designing a replacement for the MIDI board that would have active MIDI circuits. It’s intended to interface with a Euro module of my design that provides 5 V and serial data on a single header, without the optoisolator or current loop conversion. I could build an adaptor with the needed circuit somewhere else in the case, but it seems like the best option is to design a replacement PCB that will fit exactly where the MIDI JACKS rev003 does now. So, I’ve measured the placements for the MIDI jacks, USB jack, and screw holes. I already have the USB and MIDI jacks, so all I need are those metal brackets that solder via four pins each to the PCB and have M3 threaded holes in the right position to align with the 7U case.
>> 
>> My design has jumpers to switch MIDI THRU between a buffered version of MIDI IN or a second MIDI OUT. In my case, the extra bandwidth of a second MIDI OUT will probably end up being necessary.
>> 
>> I plan to keep the USB wired to the 10-pin header in the same way for compatibility with any existing (1U?) modules that might use USB, but will leave the MIDI pins unconnected since I’m taking them over.
>> 
>> Brian
>> 
>> 
>> p.s. I’ve already designed and built a 1U module that is a buffered 4-channel 1/8” to balanced circuit that connects to the existing Audio Jacks Board v2 via the 10-pin header. I really appreciate that both the Tip and Ring for all four jacks are brought to that one header. I ended up making all four jacks into outputs, and that was simple because the Audio Jacks Board is passive - so the direction isn’t baked in to the hardware. Of course, the labels painted on the case are no longer totally correct, but this is a personal modification for a 4-voice modular synth with individual balanced voice outputs.
>>