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Cleaning of PCB’s and PCA’s

Why Clean a Printed Circuit Board (PCB) and Assemblies (PCA)? (IPC-CH-65)


Why Clean a Printed Circuit Board (PCB) and Assemblies (PCA)?

In general, the manufacturing processes used on electronic assemblies are a series of chemical processes. Each step in the operation has the potential for leaving harmful materials on the PCA that can compromise assembly reliability. Cleaning is often needed to remove such harmful residues and improve reliability. Cleaning is also used to remove residues as an aid to inspection.

Customer contracts often require the assembly to be cleaned and tested for cleanliness!

Most assembly processes can be divided into two general categories: those that incorporate a cleaning process and those that do not. Both assembly categories are capable of producing high reliability hardware. The post-soldering cleanliness designator allows a customer or manufacturer to specify the process to be used on their hardware.

The cleanliness of parts is necessary both before and after soldering. Poor cleanliness is a common cause of solderability problems. Effective cleaning after soldering may be necessary to promote good adhesion of conformal coating, prevent leakage paths, and avoid corrosion.

If the assembly has to be cleaned, the user has to clean the assembly (the cleaning solution chosen should remove the harmful flux residues), while leaving the other materials and components alone. The cleaning media should be capable of removing any electrically conductive residues (ionic residues) and non-conductive (non-ionic or organic) residues.

In this Cleaning of PCB’s and PCA’s training, you will learn more about the reason for cleaning (Pro’s & Con’s), how clean is “Clean”? and what about No-clean flux? Do we need to clean No-clean flux?

Duration

Certification: 1 day

Recertification: --

Challenge test: --


Course materials

Each participant will receive a summary of the training. Optional: IPC-CH-65 standard (additional charge).

Modules

Modules Title Duration
Module 1 Reason for cleaning
module 2 Pro's & Con's
Module 3 Types of contamination
Module 4 PCB design for cleaning
Module 5 No-Clean vs. Clean: Difficulties, Pro's & Con's, Cost
Module 6 How clean is "Clean”?
Module 7 Cleaning agents/methods: Types, Application, Compatibility
Module 8 Environment
Module 9 Testing cleanliness
Module 10 Cleaning after rework, repair or modification
(Nederlands) Module 11 (Nederlands) Bruikbare standaarden
Investing in the knowledge and skills of your employees? Check out the online training brochure which training best suits your goals / needs. This can be found among others in our online training brochure: - Overview of the IPC training - Other information (program, teaching materials, time) - Overview of the most popular training courses

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