SCS Blog
Recent SCS Blogs
Paralene, Paralyne, or Parylene: Correctly Spelling and Using This Superior Conformal Coating
Discovered in 1947 by chemist Michael Szwarc, the polymer Parylene originally bore his name and was known for a brief period known as Szwarcite. Working to thermally decompose the solvent p-xylene at temperatures exceeding 1,000°C, Szwarc identified the monomer para-xylylene di-iodide as the only product resulting when para-xylylene was reacted with iodine. Parylene has developed... Read More >>
Can I Glue to Parylene?
With reliable moisture barrier properties, Parylene (XY) conformal coatings generally have a hydrophobic surface when deposited onto substrates, causing liquids to form separate droplets on film surfaces. While this outcome is useful for many Parylene applications, a greater hydrophilic response, wherein XY molecules form ionic or hydrogen bonds with water molecules, can also be desired.... Read More >>
Implantable Devices and Parylene
Materials surgically-grafted or inserted onto a portion of the body are considered implantables. Although a medical implant may be composed of body tissue such as a blood vessel or tendon, many are made from artificial substances, surgically positioned within the body to improve the patient’s health by upgrading the performance of an affected organ or... Read More >>
Type SR Conformal Coating Examples
Silicone conformal coatings offer many benefits such as high temperature capabilities, excellent moisture protection and easy application and re-workability. Common type SR conformal coatings include: SCS is the world leader in conformal coatings, including type SR coatings. To discuss using silicone conformal coatings for your application, call +1-317-244-1200 or Contact SCS online.... Read More >>
Will HumiSeal® 1B31 Mitigate Tin Whiskers?
Tin whiskers are electrically conductive, crystalline structures of tin that sometimes grow from surfaces where tin (especially electroplated tin) is used as a final finish. They typically grow from lengths of 1-2 mm but have been observed to lengths in excess of 10 mm. They are a serious issue in the electronics world, because they... Read More >>
Removing Conformal Coating
Conformally coated PCBs are expected to work without fail, largely because of the protection the coatings provide them. In addition to PCB-manufacturing issues, coating problems can trigger failure mechanisms for the assembly. For instance: Removing the coating may be necessary if these conditions prevail. Reliable Methods of Removing Conformal Coating Coating removal methods are determined... Read More >>
How to achieve Repeatable Conformal Coating Thickness
Achieving consistent conformal coating thickness is not an easy task. It requires a fair amount of training and skill. Below is an overview of three conformal coating application methods that result in repeatable thickness. Selective coating robots: These coating machines are programmed by a user to perform a repeatable coating process, resulting in a consistent... Read More >>
Potential Issues with Automated Spray Conformal Coating
There are many benefits to using a spray robot for conformal coating application. As always, there are also some potential issues that need to be evaluated prior to selecting this coating application method in an in-house environment.One potential problem with using a selective conformal coating system is the misalignment components on the PCB. This can... Read More >>
