Tag Archive | IPC-A-610 standards

What is UL 746E and what does this mean for conformal coating?

Underwriters Laboratory (UL) are a global safety certification body for consumer electronics.

UL 746E measures the ignition resistance of the conformal coating to electrical ignition sources. The conformal coating material’s resistance to ignition and surface tracking characteristics is described in UL 746E.

If you would like to know more about conformal coating standards and handbooks or other products and services offered and supported by SCH Technologies, please do not hesitate to contact us

Telephone: +44 1226 249019

Email: sales@schservices.com

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Why do I need a Conformal Coating AOI system? My robot application process is fully automated

Anyone who uses a selective robot system for applying conformal coating knows that the system can go wrong. The robot dispenses a liquid. This automatically introduces variables that can go wrong in a variety of ways including

  • The coating drying out in the valve leading to a blockage or misdirected coating onto the board
  • The material running out and not enough deposited
  • The PCB put in the wrong way or the wrong PCB for the program put in the machine
  • A component out of alignment leading to a collision of the valve with the board
  • The wrong viscosity put in the machine or the viscosity changing with temperature
  • The material curing in the machine causing a blockage

It is possible to engineer many of these problems out with options purchased at the time for the selective robot. But, ultimately, no manufacturer of material or equipment will guarantee no problems with their process. So, a conformal coating inspector is needed to check the quality of the process.

Yet, why is this the last part of the coating line that is generally not automated. The rest of the line is and the majority of an assembly line is. But, in conformal coating the general industry still relies on an operator visually inspecting a circuit board by eye under UV light. However, it is well known that operator fatigue leads to errors in inspection. Therefore, PCBs that are coated incorrectly will get past the inspectors.

Hence, an Automated Conformal Coating Inspection System  can be used to remove the operator error in the line and improve the process.

Inspecting Conformal Coating on PCBs – Using the IB100 Conformal Coating Inspection Booth

The IB100 conformal coating inspection booth is an ideal work station for operators to inspect & finish circuit boards which have been conformal coated.

Fitted with dual UVA lamps behind a safety screen to allow solvents to be used safely in the booth, the IB100 offers 36W of ultraviolet light for maximum visual inspection & finishing performance without compromise to operator safety in operation.

Click for further information.

Conformal coating Inspection – A range of systems for inspecting conformal coatings on PCBs

SCH Technologies design and manufacture a range of purpose-built, compact and coordinated UV inspection & finishing booths for conformal coating inspection.

These systems are used in SCH’s coating service and have been optimised to offer the best inspection & finishing performance without compromise to health & safety, coupled with ergonomic design to minimise operator fatigue.

An important point in conformal coating inspection & finishing is to creat the optimum environment where an opertor can easily inspect coated circuit boards without fatigue to body or eyes, provide the highest quality results for the conformal coating process and keep the operator safe from the harmful effects of solvents.

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Conformal Coating Training Room – For conformal coating training

SCH offer quality conformal coating training both on and off site.

Dedicated Conformal Coating Training Room

SCH have a dedicated training room for conformal coating courses and demonstrations of conformal coating equipment.

Using this facility candidates get complete hands-on experience with the conformal coating systems and processes without disturbance to production with a full range of systems available to ensure the best learning environment.

Conformal coating systems in the training facility include UV conformal coating curing, conformal coating dip, conformal coating spraying, manual conformal coating inspection and the new ACCIS Automated Conformal Coating Inspection System. Further, processes such as viscosity measurement, masking, de-masking, coating thickness measurement and solvent exposure monitoring can all be undertaken to give the maximum experience to the candidate.

Whether you plan to install a conformal coating process or currently use conformal coatings such as Humiseal we can help to develop or optimise your conformal coating process, to ensure you achieve the best performance. SCH can offer expert training in all areas of conformal coating including conformal coating application techniques, conformal coating material selection, optimisation, conformal coating health & safety and trouble shooting conformal coating problems.

Click here for conformal coating training page.

Inspection of Conformal Coating made Easy- Conformal Coating Inspection Booths

SCH have the IB100 range of conformal coating inspection booths available for inspecting conformal coatings on printed circuit boards.

An important point in conformal coating inspection & finishing is to creat the optimum environment where an opertor can easily inspect coated circuit boards without fatigue to body or eyes, provide the highest quality results for the conformal coating process and keep the operator safe from the harmful effects of solvents.

SCH Technologies design and manufacture a range of purpose-built, compact and coordinated UV inspection & finishing booths for conformal coating inspection.

These conformal coating inspectio systems are used in SCH’s coating service and have been optimised to offer the best inspection & finishing performance without compromise to health & safety, coupled with ergonomic design to minimise operator fatigue.

Click for further information.

Subcontract Conformal Coating – The conformal coating service second to none

SCH Technologies Ltd is the UK’s leading subcontract Conformal Coating service provider.

SCH Services offers you a highly competitive alternative to in-house conformal coating processing with a proven track record as a conformal coating subcontractor. Utilising all methods of conformal coating application including semi automated conformal coating dipping, conformal coating batch spraying, Certonal dip coating and selective / robotic conformal coating

SCH use a range of conformal coating materials including Humiseal, Certonal, Dow Corning, Electrolube & Peters. All conformal coating materials are applied to customers required specifications.

Click for further information on the conformal coating service.

Subcontract Conformal Coating Service – PCBs conformally coated for you

SCH Technologies Ltd is the UK’s leading subcontract Conformal Coating service provider.

SCH Services offers you a highly competitive alternative to in-house conformal coating processing with a proven track record as a conformal coating subcontractor. Utilising all methods of conformal coating application including semi automated conformal coating dipping, conformal coating batch spraying, Certonal dip coating and selective / robotic conformal coating

SCH use a range of conformal coating materials including Humiseal, Certonal, Dow Corning, Electrolube & Peters. All conformal coating materials are applied to customers required specifications.

Click for further information.

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