Yun Industrial and ACME PCB Assembly has been providing Electronic Manufacturing Services (EMS) and Printed Circuit Board (PCB) assembly for over 20 years.
We provide a complete suite of PCB services, including rework and modification, BGA, SMT, Turnkey, Thru-Hole, Lead Free, and Prototype assembly, plus an extensive line of add-on services.
We are a mid-sized EMS company – a good match for production runs that range from prototype to 20,000 units. Being a mid-sized contract manufacturer, we are more flexible and responsive to production requirements than the larger assembly houses.
We continually strive to have the latest technology to provide the highest quality PCB assembly services with competitive prices.
Our family operated business first opened in Carson, CA in 1993 offering Ball Grid Assembly.
In 2000, Yun Industrial achieved a significant milestone: ISO 9000 Certification.
In 2008, we grew the company with new services such as soldering and cable stripping.
In 2014, we made a significant investment in cutting-edge new technology.
1995 – ACME PCB Assembly Offers Ball Grid Array (BGA) Assembly
We began BGA placement on a project from D-Link Systems. Over time, we learned techniques and built experience with various types of BGA assembly jobs. Some of these included placing BGAs on both the top and bottom sides of the printed circuit board. We also developed the capability to place BGAs on both sides of the circuit board utilizing tin/lead as well as lead-free solders. This is a challenging process, but at Yun Industrial, we do it without a problem.
2000 – Yun Industrial / ACME PCB Assembly Become ISO 9001:2000 Certified
The International Organization for Standardization (ISO) is a network of the national standards institutes of 147 countries, with one member per country, that develops and publishes International Standards. ISO is headquartered is in Geneva, Switzerland and the standards adopted by this non-governmental organization are universally recognized and accepted. The ISO 9001:2000 certification demonstrates that Yun Industrial / ACME PCB Assembly builds to high-quality standards that can be measured.
2004 – Yun Industrial / ACME PCB Assembly Offers Lead-Free (RoHS) PCB Assembly
RoHS, also known as Lead-Free, stands for Restriction of Hazardous Substances. The RoHS Directive 2002/95/EC restricts the use of six hazardous materials found in electrical and electronic products. As of July 1, 2006, all applicable products in the EU market has to pass RoHS compliance.
2005 – Procured Another Fuji NXT Pick-and-Place Machine for Prototype and High-Mixed, Low-Quantity Builds
Yun Industrial / PCB Assembly added state-of-the-art manufacturing capability to provide high-quality assembly as well as shorter delivery times. The Fuji NXT is designed to meet the demands of modern production environments and gave us the capability to place Surface Mount Technology (SMT) components with package sizes as small as 01005 which is one-quarter the size of the 0201 package.
2006 – IPC 610 Class III Certified
The Institute for Printed Circuits (IPC) was founded in 1957. However, as more electronic assembly companies became involved with the association, the name was changed to the Institute for Interconnecting and Packaging Electronic Circuits. With its comprehensive criteria for Printed Circuit Board Assemblies (PCBA), IPC-A-610 is the most widely used inspection standard in the electronics industry, and has earned an international reputation as the source for end-product acceptance criteria for consumer and high-reliability printed circuit assemblies. Now, many military applications require IPC 610 Class III as a quality standard, replacing the older MIL spec.
Yun Industrial / ACME PCB Assembly has its own in-house Certified IPC-A-610 Trainer to assure that all operators understand and follow the standard.
2007 – IPC J-STD-001 Class III Certified
The Assembly and Joining Process Committee, with the EIA Soldering Technology Committee, developed the joint standard, J-STD-001: Requirements for Soldered Electrical and Electronic Assemblies. We utilize the IPC-A-610 book which, through full-color photographs and illustrations, provides the industry-accepted workmanship criteria for electronic assemblies to meet the requirements of J-STD-001.
ACME PCB Assembly has its own in-house Certified IPC J-STD-001 Trainer to assure that all operators understand and follow the standard.
2008 – Upgraded Operation to ISO 9001:2008
We upgraded to ISO 9001:2008 and added a Fuji XPF pick-and-place machine to augment our high-mix, low-volume production. This machine can load components as small as 01005. We improved the security of the facility by installing 37 security cameras and a key-less entry system.
2009 – Added SeHo Selective Soldering Machine
The addition of the SeHo selective soldering machine allows us to achieve superior solder quality with consistency. As heat is applied only in the area being soldered, it minimizes thermal shock to the PC board and components during PCB assembly. We can handle boards with as many as 32 layers.
2010 – Added Nordson Automatic Optical Inspection System
The addition of the Nordson Automatic optical inspection system allowed us to effectively inspect small component such as 0201 or 01005.
2011 – Added Schleuniger Cable Stripping Machine
The Schleuniger cable stripping machine allows us to offer cable and wire harness fabrication services.
2012 – ACME PCB Assembly offers Conformal Coating Service
Conformal coating is now performed in house. We work with both Silicone and Acrylic conformal coatings.
2014 – Acquired new 130 kV X-ray Inspection Machine for Counterfeit-Component Inspection, Another 650XL Rework Machine, and BGA Microscope Inspection Tool
I've used Yun Industrial / ACME PCB for four PCBs, all of which had 18 layers and over 1,400 components ranging from 676-pin BGAs to bypass capacitors in 0201 (impossible to find if you drop them) packages. Troubleshooting these boards to correct assembly problems would have been a complete nightmare. Fortunately, that wasn't necessary. Yun Industrial did an excellent job on all four boards. I highly recommend them, especially to anyone using components in state-of-the-art packages.
I have used Yun Industrial / ACME PCB for over four years and they have done outstanding work for us on challenging projects. Their technical ability and quality control is top notch, and they really take the time to respond to customers' needs. Very professional, and high quality work with no missed deadlines, in my experience.
I highly recommend Yun Industrial. After I had prototype PCBs assembled, they went out of their way to assist me when I needed to make modifications. The service was incredible and the work was high quality.
ACME recently built 25 sets of 3 different board designs for me. All were lead free. One had surface mount components on both sides. Some components were fine pitch QFN packages. ACME also supplied the PCBs from our original design files. This was our first post prototype production. The end result was zero defects and zero problems of any note. On top of that, Stephen, Alice, and others at Yun/ACME were pleasant to deal with, timely and very responsive.
I've been working with Yun Industrial / ACME PCB for many projects. They are easy to work with and deliver high quality build on time!
Yun Industrial is a proud winner of back-to-back Business Hall of Fame Awards from the U.S. Commerce Association for 2014 and 2015.