Jim,
Try something like:
.044 THICK FR4 PER IPC 4101/24, C1/C1.
TOTAL FINISHED THICKNESS NOT TO EXCEED .050"
The good news is 4101 allows for with or without copper.
The bad news is .044" is the starting thickness and finished thickness must allow for additional plating, mask, etc.
Calling out max allowed thickness and starting thickness will allow your supplier to easiest fit within process'.
If this design requires UL then add:
UL RECOGNIZED COMPONENT ZPMV2, 94V-0
For most PCB Fabs this is all the data (material wise) they really need.
Hope it helps,
FNK
Frank N Kimmey CID+
Principle PCB Designer
Powerwave Technologies
EDH 916-941-3159
FAX 916-941-3195
CEL 916-804-2491
-----Original Message-----
From: Marsico, James [mailto:[log in to unmask]]
Sent: Thursday, February 12, 2004 12:37 PM
To: [log in to unmask]
Subject: Re: [TN] FR-4 standard thickness
If the standard material is .044", including the copper, how would I call it
out using the IPC-4101 designation?
Jim Marsico
Senior Engineer
Production Engineering
EDO Electronics Systems Group
[log in to unmask] <mailto:[log in to unmask]>
631-595-5879
-----Original Message-----
From: Roger Stoops [SMTP:[log in to unmask]]
Sent: Thursday, February 12, 2004 3:33 PM
To: TechNet E-Mail Forum.; Marsico, James
Subject: RE: [TN] FR-4 standard thickness
Yes, but vendors call it .044", 6 layers of 7628 laminate (what's a
mil between friends, anyway?). This is a nominal number, and typically
includes the copper thickness.
They may want to consider calling out .044" to reduce confusion.
Here's a link for Nan-Ya Plastics Electronic Mat'l Div. as an
example:
http://www.npc.com.tw/Emd-e/fr-div1.htm
Roger M. Stoops, CID+
Trimble Navigation Ltd., Dayton, OH, USA
Ph: +01 937.245.5288
Fax: +01 937.233.7511
-----Original Message-----
From: TechNet [mailto:[log in to unmask]]On Behalf Of Marsico, James
Sent: Thursday, February 12, 2004 3:04 PM
To: [log in to unmask]
Subject: [TN] FR-4 standard thickness
Good day Technet:
Our designers are designing a PWB using IPC 4101/24 (FR406) material
that's
.045" thick. Is this a standard thickness that is readily
available?
Jim Marsico
Senior Engineer
Production Engineering
EDO Electronics Systems Group
[log in to unmask] <mailto:[log in to unmask]>
631-595-5879
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