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| Date: | Mon, 20 May 2019 12:36:14 +0000 |
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Rich:
Contact the manufacturer of the device. We went through this previously with one supplier and determined that we can leave the vents open based on the chemistry that we use. The only caveat was that we had to bake out the parts after wash.
Regards,
Steve Vargas
Please consider the environment before printing this e-mail
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wayne Thayer
Sent: Monday, May 20, 2019 12:20 AM
To: [log in to unmask]
Subject: EXTERNAL: Re: [TN] Washing of Vented BGS's
You have to plug them. The wash can carry nasties inside the package and then rot it out some indeterminate time later.
Wayne Thayer
On Sun, May 19, 2019 at 7:00 PM Robert Kondner <[log in to unmask]>
wrote:
> My understanding is you really can't clean under certain parts like
> QFNs and this probably applies to under the BGAs.
>
> I think you need to use a no clean flux because you will never be able
> to clean those tented vias under a BGA.
>
> I would love to be told otherwise.
>
> Bob K.
>
> -----Original Message-----
> From: TechNet <[log in to unmask]> On Behalf Of Richard Kraszewski
> Sent: Sunday, May 19, 2019 9:54 PM
> To: [log in to unmask]
> Subject: [TN] Washing of Vented BGS's
>
> Say techies
> Do any of you have a solution for washing vented BGAs?
> We have one site which allows the aqueous wash solution to enter the
> package through the vents and another site which plugs the vents with
> silicone.
> Any thoughts would be appreciated.
>
> Rich Kraszewski
> Senior Staff Process Engineer
> Phone: (920) 969-6075
>
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