Eggs Ackly!

-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Joyce Koo
Sent: Wednesday, August 07, 2013 7:12 PM
To: [log in to unmask]
Subject: Re: [TN] QFN solder voiding

Preform.

From: [log in to unmask]
Sent: Wednesday, August 7, 2013 7:47 PM
To: [log in to unmask]
Reply To: TechNet E-Mail Forum
Subject: Re: [TN] QFN solder voiding


Steve and all others.
 Void free center pads are achievable but you have to really think out of the box to arrive at a solution. I have worked with parts 1.6mm square to parts as large as a postage stamp and the same basic techniques work.

Helpful hints;
Solder mask is your enemy and the proper aperture will look very different than what you usually see.
 Little blocks of solder paste will only result in voids.
Think out of the box.

Due to my work I really cannot reveal the secrets but the results can be achieve.

John

 On Wed, 7 Aug 2013 14:12:02 -0600, Steve Gregory <[log in to unmask]>
wrote:
> (background chorus) I want my...I want my...parts void free!
>
> Steve
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
> (EHCOE)
> Sent: Wednesday, August 7, 2013 1:47 PM
> To: [log in to unmask]
> Subject: Re: [TN] QFN solder voiding
>
> Striking a familiar chord; Excellent!
> Dewey
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