|
Sponsor
|
|
Scaling SMT Traceability
High-mix electronics manufacturing requires precise material control. This whitepaper explains how Tecnimaster improved traceability, inventory accuracy and picking efficiency through integrated automated storage and reel-level tracking.
Essegi Automation
|
|
| Ask the Experts |
|
QUESTIONS
SUBMIT
MEMBERS
JOIN
|
July 15, 2009 - Updated
July 13, 2009 - Originally Posted
Thermal cycle limit
How many thermal cycles can we expose a Class 3 printed wiring assemblies to before it will no longer maintain a Class 3 rating? In general how many thermal cycles should we allow at a given location on a circuit board, such as at a BGA site, before we should consider the assembly compromised and thus may be unreliable at any Class rating?
P. W.
|
| Expert Panel Responses |
You are mixing and matching terminologies. Class 3 is a manufacturing specification. Thermal cycling has nothing to do with manufacturing.
Dr. Craig D. Hillman
CEO & Managing Partner, DfR Solutions
Dr. Hillman's specialties include best practices in Design for Reliability, strategies for transitioning to Pb-free, supplier qualification, passive component technology and printed board failure mechanisms.
|
|
|
Free Newsletter Subscription
Circuitnet is built for professionals who bear the responsibility of looking ahead, imagining the future, and preparing for it.
Insert Your Email Address
|
|
