|
Sponsor
|
|
Circuitnet Advertising Delivers Results!
Introduce your technology, new products or services in our daily e-mail newsletter & website to see how a digital advertising campaign can deliver results. Reach over 200,000 professionals.
Circuitnet LLC
|
|
|
Sponsor
|
|
EZ-FLO High Precision Dispense Tips
Each needle is machined from solid stainless steel as opposed to rolled tubing. The resulting smoother internal profile enhances material flow and consistency. Learn more.
DL Technology
|
|
| Ask the Experts |
|
QUESTIONS
SUBMIT
MEMBERS
JOIN
|
November 3, 2008 - Updated
November 2, 2008 - Originally Posted
Idle Time Between Soldering and Cleaning
After soldering components to a pcb, are there specific time intervals between the soldering process and the cleaning process? How about between cleaning and functionality test? Finally is there a specific time interval between function test and application of conformal coating? Is there an overall maximum time interval from initial pcb soldering to appliction of conformal coating?
A. S.
|
| Expert Panel Responses |
Typically the only two that are critical are reflow to clean and clean to coating and it depends on what are you cleaning off and how.
Terry Munson
President/Senior Technical Consultant, Foresite
Mr. Munson, President and Founder of Foresite, has extensive electronics industry experience applying Ion Chromatography analytical techniques to a wide spectrum of manufacturing applications.
As a rule, the sooner after reflow you clean a PCB, the easier it is to remove flux and other residues. After cleaning, the PCBs should be allowed to dry completely before any power is applied. After heat testing, they just need to cool to room temperature before functional test. Unless a second round of cleaning is required after all that testing, there is no reason to wait before conformal coat.
John Vivari
Application Engineering Supervisor, Nordson EFD
Mr. Vivari has more than 15 years of electronic engineering design and assembly experience. His expertise in fluid dispensing and solder paste technology assists others in identifying the most cost effective method for assembling products.
|
|
|
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
|
|
Optimize Your Process on Full SMT Demo Line
Validate your process in our demo lab. Our full line—printing, P&P, reflow, and AOI—is ready to optimize your profile and prove performance. Send us your boards to start.
Heller Industries
|
|
|
