Just Ask Happy: Monitoring Via Reliability on a Lot-by-Lot Basis


Reading time ( words)

We asked for you to send in your questions for Happy Holden, and you took us up on it! The questions you've posed run the gamut by covering technology, the worldwide fab market, and everything in between. Enjoy.

Q: What is the best way to monitor microvia reliability on a lot-by-lot basis for high-volume production?

A: What I recommend, and practice, is this: Do a thorough qualification of a fabricator using a HATS Qualification Panel (an IPC PCQRR-like panel) that includes an IPC D coupon resized for the runner on your SMT panel. Run these panel coupons through IPC-TM-650-2.6.27B and then TM-650-2.6.7.2 thermal cycles for 500 cycles. This is your baseline.

Then, by incorporating this smaller D coupon on all your boards’ assembly runners—requiring each lot to have a plating process control coupon for X number of solder float tests at 288°C and then microsections to look at TH quality—you have a way of comparing that lot’s performance to your initial qualification for that vendor. This should be redone each year and kept for records on each lot in case needed later.

To pose your own question for Happy Holden, take the survey by clicking here.

Share

Print


Suggested Items

Just Ask Happy: Ranking the Top Countries by Fab Technology and Production

07/13/2020 | I-Connect007 Editorial Team
We asked for you to send in your questions for Happy Holden, and you took us up on it! The questions you've posed run the gamut, covering technology, the worldwide fab market, and everything in between. Enjoy.

Materials for Automotive Applications: Thermal Management Issues

07/02/2020 | Pete Starkey, I-Connect007
For Pete Starkey, the highlight of the recent HDP User Group Automotive Technology Webinar was Alun Morgan’s presentation on materials for automotive applications. This forward-looking informational session covered the latest developments in automotive standards and automotive electronic packaging.

Just Ask Happy: The Future of 3D Printing

06/30/2020 | I-Connect007 Editorial Team
We asked for you to send in your questions for Happy Holden, and you took us up on it! The questions you've posed run the gamut, covering technology, the worldwide fab market, and everything in between. Enjoy.



Copyright © 2020 I-Connect007. All rights reserved.