Why Use Urethane Conformal Coating
Polyurethane coatings are amongst one of the most popular choices for conformal coating applications, they are available as single component, two component, UV curable, and water borne systems. As a group, all provide excellent humidity and chemical resistance plus outstanding dielectric properties for extended periods; which make them one of the more popular coatings when it comes to protection of the critical operation of your printed circuit boards (PCBs). Conformal coating circuit boards reduces conductor spacing’s on PCBs and it will offer superior protection in an aggressive environment as well as protecting the PCB against environmental particulates.
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Diamond MT is a class 3 operating, fully functional coating operation with over 25 years of field experience. Our areas of expertise are within the military, commercial, bio-medical, and aerospace technology fields.
A main reason conformal coatings are used are to extend the warranties on consumer electronics in the following fields automotive, control drives, fire alarms as well as military/aerospace safety features and long term reliability. The selection of conformal coating material is a crucial factor that needs to be considered carefully and in relation to the application method. The wrong selection can not only affect the long term reliability of the circuit board but can cause massive difficulties with both processing and costs.
The most common standards for conformal coating are IPC A-610 and IPC-CC-830. These standards list indications of good and bad coverage and describe various failure mechanisms such as de-wetting and orange peel.
Conformal coating inspection is a critical factor in determining successful coating application and long term reliability of PCBs. Using the IPC standards allows the coating operator to monitor the coating application performance. This can be done manually by the operator in an inspection booth by examining the PCB under white and UVA light or it can be done automatically by a conformal coating inspection system.
We are committed to serving the industry with rapid turn times for parylene, (normally 10 business days) with expedited service in as little as 2-5 business days depending upon the complexity and quantity. For liquid coatings, our normal turn time is five business days; again with expedite service in as little as 2-3 business day turns. » read more
Diamond MT's quality manual ensures every employee is focused on continuous improvement and service excellence. Our ESD safe facilities stretch over 12,000 square feet dedicated to your conformal coating requirements. We are continually researching and updating our equipment to make sure we are providing the best ESD protection available. » read more