Can the converters be cleaned with an ultrasonic cleaner?

Yes. They can be ultrasonically cleaned as long as the cleaning fluid used is not aggressive and does not attack any of the metal, plastic or epoxy parts.


Note: We should take into consideration that some converters have empty holes (for optional features, such as control pins), so it’s possible that a small amount of cleaning fluid could wick its way through these holes and work its way under the base plate. This will not damage the converters (underneath the base plate it’s completely encased in epoxy) but be aware that if the board is baked to dry it off, the temperature of the oven should remain bellow 100°C so this trapped liquid doesn’t turn to steam and cause problems.


Category: clean, ultrasonic
I need to clean the board before conformal coating; we are concerned about the cleaning process for the RECOM parts.

You can use a non-aggressive, non-corrosive, water-based cleaning agent. The materials used in the converters are nickel plated copper for the metal case, cured two component epoxy (XT5038-6) for the potting compound and Diallyl Phthalate (DAP 901 - also known as Duroplast) for the plastic case. All of these materials are unaffected by any of the washing liquids suitable for cleaning PCB boards and also will not react with mineral oils, water-based compounds or even most solvents used in industry.


The ambient temperature should not exceed 130°C for extended periods of time (several hours) as this is the maximum recommended use temperature of the epoxy.


Please refer to the instructions given by the conformal coating supplier regarding the recommended process for applying the coating.


We have many customers that wash their boards, both with aqueous and solvent-based washes, before applying a conformal coating or potting their completed pcb.

We have never received any complaints of chemical incompatibility or any other problems with washes or conformal coatings.


Category: clean
How can I clean these parts included in my board?

As with all electronic devices, strongly reactive agents in hostile environments can attack the encapsulating material and the pins, hence cleaning is recommended with inert solutions (e.g. alcohol or water based solvents) suitable for electronic components and at the temperatures recommended by the cleanser manufacturer.

Category: clean, solvent