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Minimum tension to be maintained in SMT stencil

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#84240

Minimum tension to be maintained in SMT stencil - Any Standards | 21 January, 2020

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 there any standard to be maintained. Please help me to get some standards on the same.

Regards, Ameen

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#84244

Minimum tension to be maintained in SMT stencil - Any Standards | 21 January, 2020

What does supplier say?

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SMTA-Davandran

#84251

Minimum tension to be maintained in SMT stencil - Any Standards | 22 January, 2020

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.

This message was posted via the Electronics Forum @ SMTASMTA

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#84517

Minimum tension to be maintained in SMT stencil - Any Standards | 23 February, 2020

Read 35-55 @ 5 position, 4 corner and 1 center.

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#84596

Minimum tension to be maintained in SMT stencil - Any Standards | 3 March, 2020

Dear All,

thanks a lot .

Supplier recommend same 35 - 50 n/cm.

But our customer is asking for any standard available in the industry to follow same.

Please share any standard . If come across.

Regards, Ameen

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SMTA-Davandran

#84604

Minimum tension to be maintained in SMT stencil - Any Standards | 4 March, 2020

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

This message was posted via the Electronics Forum @ SMTASMTA

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#84613

Minimum tension to be maintained in SMT stencil - Any Standards | 5 March, 2020

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

Attachments:

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#84927

Minimum tension to be maintained in SMT stencil - Any Standards | 29 May, 2020

Hi Team,

what we have observed is that tension basically at the center of the stencil is less . And it directly depends on the number of aperture opening we have . More the opening less the tension.

But there is no supporting document for the same form IPC or any other standards.

Regards, Ameen

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