Author Archives: Erin

Printed Circuit Board Fabrication

Conformal Coating Service

Why apply conformal coating?

Printed Circuit Boards (PCB) is the core of everyday life as most electrical devices can not function without one. From everyday life to military and medical situations, a PCB must be able to withstand the wear and tear of time and other elements. Conformal coating is designed to protect Printed Circuit Board (PCB), and related equipment from their environment. Typically applied at 0.001 inches to 0.003 inches on the PCB. It is a protective nonconductive dielectric layer that is applied to the assembled printed circuit boards to protect the electronic product from damage due to contamination, salt spray, moisture, fungus, dust, and corrosion caused by the harsh or extreme environment.

Solder Mask on Printed Circuit BoardsACME PCB Assembly happens to offer three different kinds of conformal coating for our valuable customers. The acrylic conformal coating is a low viscosity coating that is cured through drying and isn’t too resistant to chemicals but hardens quickly. The Urethane conformal coating is also a low viscosity coating, however, is cured through crosslinking with strong resistances to chemicals. Silicone conformal coating is a very viscous coating that is applied through swirl technology with high chemical resistances.

Below is a graph that shows the characteristics of the conformal coatings ACME PCB Assembly provides.

Acrylic conformal coating Urethane conformal coating Silicone conformal coating
Viscosity Low Low High
Typical applicator technology Film coating Film coating / Swirl Swirl
Curing Drying Crosslinking Crosslinking
Volatile Organic Compound (VOC) Yes Yes No
Chemical resistance Low High High
Thermal span Low Low High
Glass Transition Temp Low Low N/A
Repairable Solvents Solvents & Mechanical.

 

May result in stratified coating after repair.

 

 Solvents & Mechanical.

 

May result in stratified coating after repair.

 

Call 310-715-1898 or email steve@acme-pcbassembly.com for a free quote.

Printed Circuit Board Fabrication

Why Running a Trial Run First is Important in PCB Assembly

Why Running a Trial Run First is Important in PCB Assembly

Do you have a new PCB idea and want to see it executed? Once you have the design drawn up and are ready to move forward you might be wanting to execute a large quantity because you know they will sell, but the bigger question is will it work properly?  Before spending all that money you should really consider a trial run before entering into a mass production of a certain product.

PCB Assembly recommends you should perform a trial run first.  A few important reasons you want to perform a trial run first before going head first into mass production is because a test run usually entails a mini mass production: which means instead of making 6,000 pieces right off the bat, we will be making 200, and then up it to 1,000 to see how the production goes.  If all goes well and production turns out the way you want, we would do the 6,000 order at that point.  As you can kind of understand now how it is like testing a product.

This trial run is often neglected and skipped by companies that are importing parts because they are in a hurry to deliver the product to their customer.  Although, it is still one of the essential steps at the beginning of the mass production page.

Mass produced product is never perfect the first time.

A Few Reasons to do a Trial Run First

  1. Tooling Correction and Adjustment
  2. Assembly and Manufacturing Adjustments
  3. Testing Tools Adjustment
  4. Spacing and Logistic Adjustment
  5. Defective List Establishment

Contact Us Today!!

pcb-prototype

Need a Prototype? We can help you.

Turn Your Big Idea Into a Prototype

Have you had an idea for the next great invention swirling around in your head for-ev-er, well New Year’s is approaching. Is 2023 the year you finally turn your dream into reality and build your invention? Creating a new invention is hard work, but you’d be surprised by how many companies and vendors exist to help you along the way. New Product Introduction is a challenging phase in a product’s life cycle. Yun Industrial / ACME PCB provides the breadth of services and experience to smoothly transition your new product from concept and design through to volume production.

we can help you prototype the printed circuit boards your invention needs to function. We’ve worked with all sorts of entrepreneurs, inventors, and start-ups over the years. If you aren’t sure about the exact schematics of the PCBs that you need, that’s alright. We can help you every step of the way, from planning to designing, and actually building the circuit boards. Other vendors can assist you with the other parts of your product.

Before you know it, you’ll have a prototype in hand, which will allow you to begin confidently pitching investors and getting your product to market.

We provide a complete suite of PCB Assembly Services, including rework and modification, BGA, SMT, Turnkey, Thru-Hole, Lead Free, and Prototype assembly, plus an extensive line of add-on services, such as Injection Molding and Metal Work & Finishing. Yun Industrial and ACME PCB Assembly has been providing Electronic Manufacturing Services (EMS) and Printed Circuit Board (PCB) assembly for 26 years.

Contact us today to get started prototyping the printed circuit boards you need.

Proud to Be a Lead-Free PCB Assembly Provider

Proud to Be a Lead-Free PCB Assembly Provider

There’s a reason that in the United States we no longer allow lead in paint or in gasoline. Though lead is a naturally occurring element, it can be highly toxic to humans. It has been connected with behavior and learning problems, lower IQ, slowed growth, anemia, and even coma and death in severe cases. Children and pregnant women are the most at risk of lead poisoning.

For a long time, lead has been part of the soldering process, which is critical to making printed circuit boards. Here at  ACME PCB Assembly, we have made the commitment to adopt lead-free solders. Replacing lead solders requires more than just replacing equipment. Lead-free solders have a higher melting point, which means we have had to revise our entire production and assembly process. This required re-training our workers.

Though the change was difficult, it was worth it to remove the risk of lead exposure from our facilities.  Now, when you work with us, you know that you are working with a lead-free PCB assembly provider.

Proud to Be a Lead-Free PCB Assembly Provider

Is lead-free (Pb-Free) also on your mind? It should be. Lead-free (Pb-Free) will impact almost everyone in the electronics industry – from suppliers of component, board and materials like paste and flux to manufacturers and users of electronics products and equipment. Also expect considerable investment both in human resources and capital equipment. Your relationship with your suppliers and customers will also be tested.

There’s a reason that in the United States we no longer allow lead in paint or in gasoline. Though lead is a naturally occurring element, it can be highly toxic to humans. It has been connected with behavior and learning problems, lower IQ, slowed growth, anemia, and even coma and death in severe cases. Children and pregnant women are the most at risk of lead poisoning.

Printed Circuit Board FabricationFor a long time, lead has been part of the soldering process, which is critical to making printed circuit boards. Here at ACME PCB Assembly, we have made the commitment to adopt lead-free solders. Replacing lead solders requires more than just replacing equipment. Lead-free solders have a higher melting point, which means we have had to revise our entire production and assembly process. This required re-training our workers.

Lead-free solder and assembly reliability is achieved if trained specialists carefully implement several process requirements. There are a number of variables that must be taken into consideration to achieve lead-free solder assembly joint reliability.

ACME PCB Assembly is flexible in meeting your requirements. We have offered Lead-Free (Pb-Free) soldering since 2005. Please review Design to Avoid Tin Wiskers for RoHS compliant (Lead-Free) assembly. Though the change was difficult, it was worth it to remove the risk of lead exposure from our facilities.  Now, when you work with us, you know that you are working with a lead-free PCB assembly provider.