Welcome to the Spectrum Assembly, Inc. Blog

Trying to determine if outsourcing is right for your company? Wishing you could find a contractor willing to give you advice on your options rather than just selling you “one size fits all” services? We’ve created this blog to help companies wanting to answer those questions. Our posts will include helpful tips on choosing the right outsourcing partner, information on upcoming conferences and events we participate in, success stories, and short articles on processes or technology that can save time or enhance quality. We welcome your feedback and comments.


The 7 Benefits of the MY500 Inkjet Printer

MY500Spectrum Assembly, Inc.’s Mydata MY500 inkjet printer helps it address customer quality challenges “on the fly.” For example, one PCBA had a QFN device that was driving solder bridging. A 2:1 ratio was used across the stencil. Even with adjustments to screen apertures that varied paste deposition by component, significant defects were occurring because solder paste height could not be reduced sufficiently under the QFN. In a panel of 36 assemblies, 26 had solder bridges using traditional screen printing. Utilizing a standard profile, the MY500 reduced solder bridges to 6 per panel. The production team reprogrammed the machine to dispense a smaller amount of paste under the QFN and completely eliminated all solder bridges.

In addition to “on the fly” programming changes, here are six more benefits of this highly flexible inkjet printer:

  • Adjustable solder height
  • Eliminates need for stencils
  • Reduced NRE fees
  • Eliminates defects that can occur from worn or clogged stencils
  • Ability to print paste on PCBAs with components already mounted
  • Instant changeover from leaded to lead-free.

Visit SAI at the Del Mar Electronics Show

Spectrum Assembly, Inc. will be exhibiting in Booths 302 and 304 (Bing Crosby Hall) at the Del Mar Electronics and Manufacturing Show. Access your free registration here.

Where & WhenTopBannerZ
Date:        May 2-3, 2018
Time:        Wed., 10 am – 5 pm
                Thurs: 10 am – 3 pm
Location: Del Mar Fairgrounds, San Diego
Jimmy Durante Blvd, Del Mar, CA

Common Mistakes in Design For Assembly

IMG_8546In February, we looked at some of the common DFM mistakes that SAI helps its customers eliminate. Here are some of the common mistakes to avoid in design for assembly (DFA):

  • Cable specification issues: IPC guidelines require specific wire gauges be used with specific terminal types. Use of the wrong wire gauge can result in wires coming loose or breaking off the terminal during normal use or maintenance activities. Lack of specifications such as failure to list tolerances or clarifying whether the cable length includes the connector or is simply the inside length are also issues.
  • Assembly routing: The order in which cabling and tubing is assembled can impact both efficiency and product performance. An efficient routing sequences the cable harness assembly steps in a way that does not require the operator to have to work around previously installed harnesses. When tubing carrying air liquid is also involved, it is important to ensure the tubing is not accidently crimped by either its placement location in relation to harnesses or a harness tie down.
  • Documentation formatting: the more complex a product, the more important electronic documentation becomes because it enables sorting and searching within the files. When documentation such as bills of materials (BOMs) are submitted as PDFs, they must be converted via optical character recognition (OCR) scanners. This can add errors to documentation. The preferred format would be an Excel file or a comma or tab-delimited text file.
  • Missing BOM items: Sometimes consumables such as adhesives, zip ties or Lock-tite are not listed as a line item on the BOM. In addition to the quoting inaccuracy this can cause, it also can create confusion on the preferred product to use.
  • Missing test and programming requirements: Sometimes functional test and programming requirements are listed only in the test instructions or not all steps are written down. There are often “tribal knowledge” issues that aren’t always conveyed to the contract manufacturer in testing.

SAI Wins Three Service Excellence Awards

SEA croppedSpectrum Assembly Inc. won awards for Responsiveness, Technology and Value for Price for EMS companies with revenues under $20 million at the 2018 Service Excellence Awards (SEA) for Electronics Manufacturing Services (EMS) providers. The awards program was sponsored by Circuits Assembly magazine and recognized EMS companies that received the highest customer service ratings as judged by their own customers through a third party. The ceremony was held on Feb. 27, at the IPC APEX Expo in San Diego, CA.

This is the sixth year that SAI has won one or more categories in the SEA awards.