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September 2001

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Subject:
From:
Geoff Layhe <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 27 Sep 2001 11:46:49 +0100
Content-Type:
text/plain
Parts/Attachments:
text/plain (70 lines)
Hi Jens,
Tolerances for laminate between 1.04mm to 1.674mm are:

Class A/K       +/-0.19mm
Class   B/L     +/-0.13mm
Class   C/M     +/-0.075mm

Classes ABC are measured without the metal cladding.
Classes KLM are measured with the metal cladding.
regards
Geoff Layhe


-----Original Message-----
From: PCBA [mailto:[log in to unmask]]
Sent: 27 September 2001 08:47
To: [log in to unmask]
Subject: [TN] IPC 4101 - what specs


Hi,

isn't it very sad that I can't find the laminate tolerance specs for IPC
4101 on their homepage?

Anyway, I hope somebody can jump to the rescue and let me know the specs
for this laminates: (1.50 / 1.60mm only if there is any difference)

FR2
CEM-1
FR4

...just a link where I can look it up would be OK.

Thanks!

Jens Behrens

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