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Snap On EMI Shield ... anyone has experience?

Views: 4699


CW

#44405

Snap On EMI Shield ... anyone has experience? | 6 October, 2006

hi All, Anyone use snap on type EMI sheilding before? I would like to provide a DFM to a customer who currently have a EMI shield soldered on the boards, which i found this not quite manufacturing friendly as it block the view for inspection, plus repair is a problem. And there always exist some coplanarity issue where we need to touch up after reflow. I would like to suggest customer using snap on sheild, any recommendation?

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#44415

Snap On EMI Shield ... anyone has experience? | 8 October, 2006

Hi,

Just a hint to help your posts. When posting a new thread, try and put something into the subject line that helps people know what the post is about. I think the subject is like a little advertisement for your post to encourage people to click on it. "Hi All" most likely will get passed over, where as if you put something like "Snap on EMI shielding" I think you would do better and help everyone.

I normally would not click on a post with a subject like this, however it's a really a good question, and I would also like to know the answer too. Luckily I clicked on it!

Grant

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Rob

#44418

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

Snap on is likely to have less of an effect than soldered on, as the solder forms more of an effective Faraday cage.

That said, it depends on how effective you need it.

Rob.

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Scott B

#44423

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

We have used these shield clips from Autosplice to good effect. The clips are placed and reflowed on your SMT line and the shield fitted before test. It depends on the demands of your product as to whether these are suitable.

http://www.autosplice.com/Germany/3.1.pdf

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C.K. the Flip

#44425

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

I had a customer like this too. Originally, the customer print called for manual soldering of the RF shield (which took us about 20 min. per shield to hand solder), but I changed it to Solder Reflow (I cut apertures on the stencil), with brass weights on top of the shields applied, obviously before reflow to keep them flush to the board. It still wasn't 100% defect free, but saved the customer on labor.

Those clips look like a great alternative. I am saving that link for future reference.

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CW

#44430

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

Thanks All!

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RDR

#44436

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

We like to use the type thast solders onto board and only the top of it is snapped on, this way we can use equipment to place shield and remove shield when required for access to component. We also utilize a through hole shield but basically solder in SMD configuration, we like the through holes because they aid in the positioning of shield base. we print the holes and the perimiter of shield then place and reflow and yes they reflow pretty good in that box!! when they don't we hand load shield without top into paste then reflow

Russ

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RDR

#44437

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

We like to use the type thast solders onto board and only the top of it is snapped on, this way we can use equipment to place shield and remove shield when required for access to component. We also utilize a through hole shield but basically solder in SMD configuration, we like the through holes because they aid in the positioning of shield base. we print the holes and the perimiter of shield then place and reflow and yes they reflow pretty good in that box!! when they don't we hand load shield without top into paste then reflow

Russ

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CW

#44438

Snap On EMI Shield ... anyone has experience? | 9 October, 2006

hi Russ, Do you have a web-site link to those type of shield that you're talking about?

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RDR

#44444

Snap On EMI Shield ... anyone has experience? | 10 October, 2006

Working on it, this part appears to always be consigned here!! it is only part on BOM of products that I remember using it with no MFGR data!!!

I will keep looking though. you may just want to do a search and contact some of these MFGrs.

Russ

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guest

#44500

Snap On EMI Shield ... anyone has experience? | 13 October, 2006

You could try Gore's Snapshot sheild, we use them on a product here, very effective. (No I am not affiliated with Gore!)

http://www.gore.com/en_xx/products/electronic/emi/emi_shielding.html

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dave

#44525

Snap On EMI Shield ... anyone has experience? | 16 October, 2006

would these shields be hermetically sealed ?

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