Electronics > Beginners
Where to get EMC/EMI Metalic PCB Shield?
Wendy_Preston:
--- Quote from: coppercone2 on January 11, 2019, 12:41:12 pm ---I think your system would be better if you provided the clips in a long strip that can be spaced closer together to make the slot antennas smaller, so they can be cut like SIP headers to a correct length. And bent into a square or whatever shape you want.
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It's certainly a valid idea. However the type of market we aimed the shield clip for are doing high volume, automated pick and place for the PCB. This system allows for the clips to be placed from conventional tape within their system. The development kit was a later addition to the range, to assist PCB engineers in the development stages of their projects and get the clip system designed on their PCBs. Hence why the development kit uses the most popular design of clip that we sell in volume.
Definitely not the only way of doing it, just the one that worked for our market intention.
max_torque:
For proto's i just buy a sheet of thin (0.3mm) brass (easily available at hobby/modelling shops and online) and use a pair of tin snips (like big scissors) to cut it out, and just bend it over any straight edge. Solder it together and bingo, you're done!
The Harwin surface mount retention clips are really useful too, especially during EMC development where they allow us to carry out back to back EMC tests with and without various shields in place! :-+
Mechatrommer:
--- Quote from: Mechatrommer on January 10, 2019, 01:04:34 pm ---earlier i tried to find "hollow" square and rectangulare bar in ebay, i only find one supplier from USA, i think its cheaper per unit volume than the china link you provided (6 bars in a pack, 3 foot long (90cm) each) even including shipping cost...
https://www.ebay.com.my/itm/Brass-C260-Hollow-Rectangular-Bar-ASTM-135-5-32-x-5-16-0-014-Wall-36/223306721723?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2060353.m1438.l2649
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i received the item yay, exactly the size i'm expecting. but sadly the listing of the item is no more, i'm the last mohican ordering it i guess, iirc it was indicated that they still have few stocks of it, but now no more, sad. even the listing is changed to some type of fountain pen they claimed their system got FU i almost panicked when it happened i aint order a pen. well, with what i got i can still make 100+ of circuits, the cost for each cut unit (BOM) will be about 20 cents each not that bad. if for some magical reason i need more i have to move on to china source or harwin type of folded shield. fwiw...
noname4me:
--- Quote from: Mechatrommer on January 11, 2019, 04:28:47 am ---i also consider the food tin foil, but cant find one yet in the kitchen, got to ask swmbo or i have to buy one for testing...can it work?
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Try aluminium roofing tape inside the box.
Make sure the adhesive is conductive as well...most are...I dont think I've found a roll yet that wasn't.
This has been used in production and R&D successfully
This is better than food foil because the tape sticks to the inside of the box, so you dont get a mess of foil when it all comes away from the edges
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