This is what I have settled on... How does it sound?
1. Electroplate pads (indicate with an arrow or circle area on board or specify special indentifying feature) with electrodeposited hard gold per ASTM-B-488 Type 1, Grade B, Class 1.25, (or Mil-G-45204 Type 1, Class 1, Grade C), 130 to 220 Knoop Hardness, 1.3um (0.00005 in.) minimum thickness over Electrodeposited Low Stress Nickel base plating per QQ-N-290, 5.0um (0.0002 in. to 0.0003 in.) thickness.
William Brooks, CID+
Senior MTS (Contract)
2747 Loker Ave West
Carlsbad, CA 92010-6603
760-930-7212
Fax: 760.918.8332
Mobile: 760.216.0170
E-mail: [log in to unmask]
-----Original Message-----
From: Fred Dark [mailto:[log in to unmask]]
Sent: Thursday, April 18, 2013 11:54 AM
To: (Designers Council Forum); Brooks, William
Subject: RE: [DC] Gold plating for card edge contacts or hard gold for repeated contact by spring pins
CONNECTOR FINGERS SHALL BE MINIMUM .000030 23+K HARD GOLD OVER .000150 NICKEL (WHEN APPLICABLE). This is a general notation on our fab drawing...
Regard's, Frederick Dark Jr.
Manager Senior PCB Designer
Crestron Electronics, Inc.
22 Link Drive Rockleigh N.J. 07647
P:201.750.7004 ext.11320
F:210.767.5772
[log in to unmask]
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Brooks, William
Sent: Thursday, April 18, 2013 12:34 PM
To: [log in to unmask]
Subject: [DC] Gold plating for card edge contacts or hard gold for repeated contact by spring pins
I don't have my reference books with me, does anyone have a good standard note for Hard gold plating like you use for card edge fingers? I am putting one together for a board that is going to have 'pogo' spring pin contacts repeatedly mate with gold plated pads on the board.
I remember that its about .00005 hard gold thickness over .0002 nickel I think... something like that...
Thanks,
Bill
William Brooks, CID+
Senior MTS (Contract)
2747 Loker Ave West
Carlsbad, CA 92010-6603
760-930-7212
Fax: 760.918.8332
Mobile: 760.216.0170
E-mail: [log in to unmask]
-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Dave Schaefer
Sent: Thursday, April 18, 2013 8:38 AM
To: [log in to unmask]
Subject: [DC] RoHS Fabrication Specification - Revisited
With RoHS2 approaching rapidly and the elimination of exemptions to Category 8 and 9 products I am in the process of reviewing and potentially revamping our PCB Fabrication Specification.
A few questions:
1. Is a reference to Marking Specification J-STD-609A required, or will a simple note requiring the product be clearly identified as RoHS compliant acceptable? Preference?
2. Do you call out specific laminate materials (eg IPC-4101C/126) or is a note referenceing IPC-4101C RoHS compliant material sufficient?
3. Is it necessary to mention "NON-DICY" in the note text, or is that implied by the RoHS requirement mentioned elsewhere within the Fabrication Specification?
Any other thoughts / opnions ?
Thanks,
Dave
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