circuitnet
Sponsor
BEST-Inc.

5 Keys to Component Lead Tinning Success
Re-conditioning of electronic components mitigates gold embrittlement, eliminates tin whiskers enhancing quality and sustainability prior to soldering.
BEST Inc.
Essegi-Automation
Sponsor
Schunk

Depaneling machine for separating circuit boards
SCHUNK offers solutions for the entire spectrum of the depaneling operation — from product selection, workpiece holder solutions and optimization of milling.
SCHUNK
Ask the Experts
INDEX
ASK
PANEL
JOIN
COMMENT
SEARCH
February 4, 2008 - Updated
February 3, 2008 - Originally Posted

Voiding after under-fill



During our under-fill process we are noticing voiding after the fact. Is there a tool used to see or test for voiding in an under-fill process?

R.W.

Expert Panel Responses

The primary tool for this activity would be acoustic microscopy. There are primarily two companies in this space: Sonix and Sonoscan. You could also possibly use an infrared camera if the underfill is used for heat dissipation.

image
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.
Submit A Comment

Comments are reviewed prior to posting. You must include your full name to have your comments posted. We will not post your email address.

Your Name


Your Company
Your E-mail


Your Country
Your Comments



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

Sponsor
Zestron

Is your PCB surface finish surviving the wash?
Aqueous cleaning can stain or strip ImSn, ImAg & ENIG finishes. Get test data on protecting surface finish integrity post-reflow.
ZESTRON Americas
Plasma-Etch