Electronics Forum: stencil (Page 55 of 540)

Re: Placement of 0201'...patents on stencil openings? SHEESH!

Electronics Forum | Tue Jul 21 21:09:49 EDT 1998 | Steve Gregory

>Have you looked into legal crap like >>proprietary aperture designs. I didn't know it >>but some of these pick and place vendors >>actually have patents on things like pad and >>aperture geometry. Personally, I think that's >>crazy and shouldn't b

Re: Placement of 0201'...patents on stencil openings? SHEESH!

Electronics Forum | Wed Jul 22 13:59:52 EDT 1998 | Justin Medernach

>Have you looked into legal crap like >>proprietary aperture designs. I didn't know it >>but some of these pick and place vendors >>actually have patents on things like pad and >>aperture geometry. Personally, I think that's >>crazy and shouldn't b

Re: Apply glue with a stainless stell stencil

Electronics Forum | Mon Feb 14 12:39:41 EST 2000 | Dave F

Francois: Sound like a messy process to me. Choice #1: Put only SMT parts on the primary side Choice #2: Put only SMT parts on the primary and secondary sides Choice #3: Put only SMT and PTH parts on the primary side Choice #4: Put only SMT and

Re: Apply glue with a stainless stell stencil

Electronics Forum | Tue Feb 15 13:16:02 EST 2000 | Rob Fischer

Don't feel alone. Many assemblers have the same problem but aren't fortunate enough to have say in the design of the board. They're either have a capital invedtment in a selective solder machine or pallets designed to mask bottom-side SMD. The pal

Re: Apply glue with a stainless stell stencil

Electronics Forum | Thu Feb 17 10:14:40 EST 2000 | Jim N

We bulid many boards with fine pitch on solder side and then wave. We use a wave fixture that is custom for each board. The fixture covers the SMT components and only exposes the PTH lead during the wave process. It requires about .070 to .100" clear

Re: Apply glue with a stainless stell stencil

Electronics Forum | Sun Feb 13 19:04:13 EST 2000 | Jackie Hsieh

First I'm a Taiwanese people so excuse my bad english writing. On my experience, The process of double side SMT procedure with two methods ---First one is appling the glue on the solder side, and placeing the R,C,L chips components on it.and 2nd one

Minimum tension to be maintained in SMT stencil - Any Standards

Electronics Forum | Tue Jan 21 06:53:05 EST 2020 | ameenullakhan

Dear Experts, Need your suggestion on the minimum tension to be maintained in the SMT stencil. Presently we are maintaining the 30 - 50 N/cm2 at the 4 corners of the stencil. And not considering the center of the stencil into consideration.. Is t

Minimum tension to be maintained in SMT stencil - Any Standards

Electronics Forum | Wed Jan 22 03:46:07 EST 2020 | SMTA-Davandran

Same practice is maintain at my organisation but include center during each set up. This practice is to ensure that stencil is in good during production since no standard for stencil life span control.

Minimum tension to be maintained in SMT stencil - Any Standards

Electronics Forum | Wed Mar 04 02:51:48 EST 2020 | SMTA-Davandran

I got question on is there any variance for thickness of stencil with respect to stencil tension. Is ther any guideline for it.

Minimum tension to be maintained in SMT stencil - Any Standards

Electronics Forum | Thu Mar 05 02:48:24 EST 2020 | majdi4

The tension depends on the thickness of the stencil. Exp: stencil of 100µm => tension must be higher than 33N


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