Home > Industry news
Salt sprays, moisture, fungi, corrosion and other forms of contamination caused by wet or harsh environments can damage printed circuit boards (PCBs). To prevent damage and avert costs incurred by replacement or repair, non-conductive conformal coating is applied to PCBs during the assembly process.
Conformal coating is commonly applied on PCBs used in consumer electronics, appliances and mobile phone products that may be exposed to wet, humid, dusty or other harsh environments.
How does conformal coating protect PCBs?
The conformal coating process inserts a layer of protection between the PCB board-level parts and the outside environment. This layer of protection functions like a one way street: it permits moisture contained beneath the layer to be travel across the conformal coating layer, but does not allow contaminants in the ambient environment to transit across the conformal coating to the board-level parts.
Does conformal coating have any other benefits?
Yes. Since conformal coating is made from lightweight material, it allows the PCB to maintain a small footprint. In addition, conformal coating provides a support bridge between the conductors thereby increasing overall strength. Conformal coating not only protects a PCB to ensure reliability, its layer of protection expands the working life of the board which will keep your costs low.
Are there different kinds of conformal coating?
Yes. The most common types of conformal coating are silicone, acrylic, urethane and Paraxlylene. The choice of a specific type depends on the level of protection needed. The final choice is based on the chemical and physical properties of the coating material.
How is conformal coating applied to PCBs?
There are four primary processes by which conformal coating is applied to PCBs: dipping, selective robot coating, spraying and brushing. Each of these alternatives achieve the same goal: to completely cover the PCB including sharp edges and all board contours.
After the conformal coating is applied to a PCB, the coating must be cured. The curing process can be accomplished via air drying, thermally via an oven, or by UV light.
In summary, there are six necessary steps to apply conformal coating. They are:
SMT Reflow Oven, Lead free Reflow Oven, Nitrogen SMT Reflow Oven, Reflow Oven Manufacturer, LED Reflow Oven, Dual Rail Reflow Oven, China Reflow Oven, Wave Soldering Machine, Dual Rail Wave Soldering Machine,Nitrogen Wave Soldering Machine, Wave Soldering Machine Manufacturer.
Flason Electronic Co.,ltd provide a full SMT Assembly Line solutions, including SMT reflow oven, Wave Soldering Machine, Pick and Place Machine, solder paste printer, PCB loader, PCB unloader, SMT AOI Machine,SMT SPI Machine,SMT X-Ray machine, SMT assembly line equipment, smt spare parts etc, any kind SMT machines you may need, please contact us by: wechat whatsapp:+86 13691605420, Skype: flasonsmt, Email:[email protected]
1) This is the first time I use this kind of machine, is it easy to operate?
There is English manual or guide video that show you how to use machine.
If you still have any question, please contact us by e-mail / skype/ phone /trademanager online service.
2) If machine have any problem after I receive it, how can I do ?
Free parts send to you in machine warranty period.
If the part is less than 0.5KG, we pay the postage.
If it exceeds 0.5KG, you need to pay the postage.
3) MOQ ?
1 set machine, mixed order is also welcomed.
4) How can I buy this machine from you? ( Very easy and flexible !)
A. Consult us about this product on line or by e-mail.
B. Negotiate and confirm the final price , shipping , payment methods and other terms.
C. Send you the proforma invoice and confirm your order.
D. Make the payment according to the method put on proforma invoice.
E. We prepare for your order in terms of the proforma invoice after confirming your full payment.
And 100% quality check before shipping.
F.Send your order by air or by sea.
5)Why choose us ?
A. Gold supplier on Alibaba !
B. Trade assurance to US$100,000 !
C. Best price & Best shipping & Best service !
Phone: +86 13691605420
Email: [email protected]
Add: No.94, Guangtian Road, Songgang Street, Baoan District Shenzhen