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June 2003

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Carlr Ray <[log in to unmask]>
Date:
Mon, 9 Jun 2003 19:26:09 -0500
Reply-To:
"TechNet E-Mail Forum." <[log in to unmask]>, "Wenger, George M." <[log in to unmask]>
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From:
"Wenger, George M." <[log in to unmask]>
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Carl,

I would recommend immersion silver.

Regards,
George
George M. Wenger Andrew Corporation
40 Technology Drive, Warren, NJ 07059
(908) 546-4531 [log in to unmask]


-----Original Message-----
From: Carlr Ray [mailto:[log in to unmask]] 
Sent: Monday, June 09, 2003 6:32 PM
To: [log in to unmask]
Subject: [TN] LCC HASL and Immersion Silver

Hello All,
 Got a question for you guys....

I have a customer who has a product in design review. We provided
feedback with the following concerns. My question is what would you guys
recommend for an alternative surface finish if the customer does not
change parts?

1. PCB has 3 FPBGAs, 1.0 mm pitch (64 ball count) 12mm x 14mm package
2. PCB has 1 LCC, .5mm pitch (28 pins) 10mm x 10mm package
3. PCB has 4 QFPs, <.5mm pitch (28 - 204 pin count)
4. PCB has HASL finish

We have recommended changing the LCC to a BGA or QFP device and
changing the finish to Immersion Silver.

Carl Ray
Sr. Manufacturing Engineer
Huntsville, AL 35807
Phone: 256-882-4800 ext. 8845
Cell: 256-990-1990

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