SMD Leadframe, instead of plug

Do you need to separate the boards? If not, why not just solder some wires (holes instead of pads) between them.

I did some boards with 20 mils copper alloys. Once in place, they are slightly flexible, but never breaks. They would rip pads out, but not holes.

I've seen boards mounted at right angles, but the one was soldered to the other. The vertical one had essentially an "edge connector", and the base had a pattern; then they'd solder it in place:

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An application for a flexi rigid?

I don't know a supplier but similar leadframes are sometimes used in making planar transformers when 4oz copper isn't enough. If you can't find them on the open market you could contact a company like this one:

In the end that will probably boil down to amortizing the stamping tools over the (large) production run. When we needed leadframes for med devices they were always custom made to order.

How about this:

The interconnects are also available in 0.5mm pitch, although this is a new product and is not yet on the web site.

John Walliker

The idea is to avoid hand soldering and leaded assembly to cut costs

Regards

Klaus

Great - that looks like 95% of what I was searching for

Thanks :-)

one:

Thanks for the link

I will try to quote this custom solution against the weblink from Mr. Walliker

Regards

Klaus

The tape width for SMT placement would make that tough if you want a significant overlap for rigidness. Larger stuff such as common mode chokes are often placed by hand even in mass production. Question: How will those boards be mounted? Even if you found partial leadframes wouldn't vibration and other stress eat away at the solder joints?

I am facing a similar situation right now, three sections that can be stiff and two bends. We are going full flex, Kapton based. Rigid-flex combo would get too expensive.

There are a number of flex flat cables that may be viable for this. Snoop in the online DigiKey catalog.

To me, it looks like 100%. What are the 5% you're missing?

robert

The 5% is because I would like to have on that is a single device, so there is no plastic on the SMD bridge. Then we may solder a wire onto the bridge or even better weld a crimp connection onto this (so we avoid any leaded soldering).

Regards

Klaus