IPC OUTLOOK Logo
The Knowledge and Know-how Connection
Loading
IPC OUTLOOK Logo
February 9, 2012
Solderability Problems at Low Humidity
Board Talk
Solder Deposits During Wave Soldering
Ask the Experts
Design of New Solder Attach Technologies
Materials Tech
Problems Hand Soldering 24 Layer Board
Ask the Experts
Nitrogen Inerting For Lead-Free Wave Soldering
Production Floor
Problems With Wave Solder Lead Bridging
Board Talk
Wave Soldering Problems
Ask the Experts
Hand Soldering vs. Selective Wave
Ask the Experts
Problems with Blow Holes
Ask the Experts
BGA Processing for Reliability
Production Floor
More Related Programs  »



Epoxy Bonding Problems on RoHS Boards
We are having problems with epoxy bonding to RoHS boards. Is there ...
Ultrasonic Cleaning Causing Damage
What method can be used to prevent damage to sensitive SMT components ...
Solder Deposits During Wave Soldering
During wave soldering, is there a possibility for solder to deposit on ...
Problems Hand Soldering 24 Layer Board
We are assembling a back plane board with 24 layers. We are ...
Component Damage From IR Reflow
We have an SMT package with J formed leads that crack at ...
Organic Flux Residue Concerns
What concerns should we have with reliability if we skip cleaning after ...
Alternatives to Conformal Coating
What are conformal coating alternatives to insulate solder joints and exposed conductors ...
Does Lead-free Flux Make a Difference?
Does using a lead-free solder flux really make a difference? Why not ...
Cause of Unusual Contamination?
We have 40 PCB assemblies with unusual contamination. Do you have any ...
Wave Soldering Problems
We are seeing many process defects that occur after wave soldering operations. ...
More Ask the Experts  »
Printing Focused on Useful Technology
Printing Focused on Useful Technology
EKRA focuses on "Useful Technology" that provides real benefits characterized by their efficiency, ease-of-use, and reliability.
EKRA America

Problems with Insufficient Barrel Fill
Problems with Insufficient Barrel Fill
We are seeing insufficient barrel fill (60-75%) during lead free wave soldering. Can you point to some reasons why we may be seeing this?
This program first published June 2010
At "Ask the Experts" we submit challenging questions to our panel of distinguished experts. You provide the questions and they provide the answers.

Ask the Experts Questions | Ask the Experts Panel
Submit A Questions | Join the Panel
Expert Panel contributors for this topic:
Bill Coleman, Vice President Technology, Photo Stencil
Gregory Arslanian, Global Segment Manager, Air Products & Chemicals, Inc.
Paul Austen, Senior Project Engineer, Electronic Controls Design Inc
Bryan Kerr, Principal Engineer - CMA Lab, BAE Systems
Neil Poole, Senior Applications Chemist, Henkel Electronics
John Norton, Eastern Manager, Vitronics Soltec
EH Lim, Managing Director, Asia Pacific, ECD
Paul J. Koep, Global Product Manager, Alpha - Cookson Electronics
Comments  »
Use the form below to submit a comment.
In no particular order: Hole diameter inadequate size for component lead... component leads are contaminated... wave solder is contaminated... also check wave solder temp; angle; dwell... hole wall plating is thin; rough and/or contaminated (micro-section and evaluate a poorly filled PTH). Surface finish of hole wall is compromised (e.g., immSN w/thick intermetalic; insufficient OSP coverage; oxidized immAG; porous ENIG). Recommendation: Perform an IPC J-003B solderability test on a BARE board. Failing that you then go to the Board House. Passing that you look to your storage; handling; soldering processes. NOTE: Some SnPb designs that later converted to Pb-Free see improved PTH fill when the PTH diameters are slightly increased.

Robert Lazzara, Circuit Connect, Inc.
Submit A Comment  »
This comment is about the program:
Problems with Insufficient Barrel Fill

The is a general comment.
Your Name
Company
E-mail
Country
Comments
Discussion of pricing, recommendations for specific products or advertisements are not appropriate. All comments are reviewed prior to posting. You must include your full name to have your comments posted. We will not post your email address, we request your email address so we can notify you if your comments are posted.
Today's Sponsor
Today's Sponsor
IPC Member Spotlight  »
The Design Process Just Got Easier
The Design Process Just Got Easier
Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier.
Sunstone Circuits image
Featured Sponsors  »
Internationally Recognized Training
Internationally Recognized Training
Train with the leading provider of IPC Certification, on-site or throughout US & Canada. Download the 2012 Schedule of all the IPC Programs...
EPTAC image
Printing Focused on Useful Technology
Printing Focused on Useful Technology
EKRA focuses on "Useful Technology" that provides real benefits characterized by their efficiency, ease-of-use, and reliability.
EKRA America image
The Design Process Just Got Easier
The Design Process Just Got Easier
Sunstone Circuits, has released the newest version of their design software, PCB123. Bottom line, the design process just got easier.
Sunstone Circuits image
Pick & Place Industry's Best Warranty
Pick & Place Industry's Best Warranty
Does your equipment supplier stand behind the quality and reliability of their pick & place machines with a 5-year parts / 2-year labor warranty? Learn more...
Europlacer image
The Component Counter Source
The Component Counter Source
SMD & through-hole types; others will tally 01005s. A must for inventory control, parts order checking or JIT production. From $389. MOTORIZED or MANUAL.
Manncorp image
The Component Rework Experts
The Component Rework Experts
Rework of surface mount and through hole components can be a challenge. Our techs are ready to tackle your toughest rework projects.
Circuit Technology Center image
IPC OUTLOOK Logo IPC — Association Connecting Electronics Industries
3000 Lakeside Drive, 309 S, Bannockburn, IL 60015
Phone: 978-478-5112 | Fax: 843-682-4255
Sandy Gentry, Editor | Kim Sterling, Publisher
About IPC Outlook  |  Contact Us  |  Privacy Policy  |  Terms of Use  |  Sponsorships