Your fab house(es) may be able to share some of their HATS (Highly Accelerated Thermal Shock) test data with you to help you determine what materials would meet your needs and offer the best bang for the buck.

This page has some potentially helpful links as well.
http://www.hats-tester.com/IRTS-RESOURCES.html



-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of Jack Olson
Sent: Thursday, March 26, 2015 12:35 PM
To: [log in to unmask]
Subject: [DC] Question of the Week - Laminates and Temperature

Ok, let me say right here, I really was NOT going to try and make up a "Question of the Week" just for something to do. If you guys WANT to discuss different topics on a regular basis, I'm all for it. but I honestly need to ask about this (I'm not just "stirring the pot").
So I'm showing my ignorance by asking this, but I'm not sure where to go for help...

During the transition to meeting RoHS requirements and designing for RoHS compatibility we have begun specifying a higher quality of material than we used to, conforming to IPC-4101/126

What I would like to understand is:
How to know when I should be looking for a EVEN BETTER material (related to high-temperature applications and long-term thermal cycling). What IS the next step up? What would be used in an automotive engine compartment, for example?

I am usually designing products like displays that are in a more benign environment, but where can I learn more about this?

Jack


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