With press-fit HASL is the best and with an alternate finish like ISN or
IAG the PTH size need to be re-evaluated for the new finish.

Jeffrey Bush
Director, Quality Assurance and Technical Support

VERMONT CIRCUITS INCORPORATED
  76 Technology Drive - POB 1890
    Brattleboro, Vermont 05302
      Voice: 802.257.4571.21 Fax: 802.257.0011
           http://www.vtcircuits.com
 

-----Original Message-----
From: Kaye Clayo [mailto:[log in to unmask]] 
Sent: Tuesday, November 30, 2004 2:23 PM
To: [log in to unmask]
Subject: [TN] Immersion White Tin Plating Specification

Hi Technet,

Can anyone tell me what the plating specification (including thickness,
etc.)
should be for immersion white tin to be used for compliant pin
(press-fit)?

Also, is immersion white tin the preferred finish for press-fit, or is
immersion silver or something else?

Thank you in advance.

Kaye Clayo
Sr. P. C. Layout Designer
Keithley Instruments, Inc.

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