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April 2008

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From:
Grunde Gjertsen <[log in to unmask]>
Reply To:
TechNet E-Mail Forum <[log in to unmask]>, [log in to unmask]
Date:
Fri, 25 Apr 2008 08:28:04 +0200
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Hi Lenny

The NanYa and Isola material is certainly in the same family of materials 
so by large i would say they are comparable.

There could be a possibility that 406 gives off slightly less smoke when 
burning, this is not part of the specification but your customer could 
have tested several different materials for this reason. 
A comparison test between the to materials on the same smoke desity test 
equipment might give you an indication.

BR
Grunde






Lenny Carter <[log in to unmask]> 
Sent by: TechNet <[log in to unmask]>
24.04.2008 00:00
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Subject
[TN] Smoke Desnity test, FR4-06 \ NP-170R






Howdy tech-netters,  A while back we had a customer requesting FR4-06 pcb 
material and one of our pcb vendors asked to use their manufacturer's 
equivalent NP-170R instead.  We approved it's use. 
Recently a customer said our assemblies are failing a smoke density test. 
One of our group members is suspecting the pcb material.

1)  Could pcb material be related?
2) Is NP-170R a valid replacement for FR4-06?

Thanks, 
Lenny Carter
Design Engineer
ERG, Inc.
ph (607) 754-9187 x3063
www.ergpower.com

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