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Sierra Assembly Technology LLC

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LAST UPDATED: August 8th, 2020

Sierra Assembly Technology, LLC is a leading printed circuit board (PCB) manufacturer in the USA. For over thirty years, Sierra Assembly Technology has built premier circuit boards in both small and large quantities in its local facilities. 

It has served a variety of industries including aerospace and satellite, industrial electronics, defense, computer and business electronics, consumer electronics, LED, medical, telecommunications, wireless, automotive, and guitar pedalboard. 

The company aims to accommodate a wide variety of customer needs through the following comprehensive services:

  • PCB assembly
  • Quick turn PCB
  • PCB design and reverse engineering
  • Box build assembly
  • Conformal coating
  • IC programming
  • Selective soldering NOVA 102
  • X-ray inspection
  • Automated optical inspection
  • BGA rework
  • BGA and micro BGA placement
  • Cable and wire harness assembly

All products at Sierra Assembly Technology can be customized; the company is flexible in terms of design and choice of components while meeting stringent quality standards. The company’s facility is a 10,000 square-foot, air conditioned, static free environment with two surface mount machines and one through hole machine. It has a mechanical assembly area that provides box build capability and a separate prototype area with manual and semi-automated assembly. An inspection and finishing area includes optical inspection, x-ray states, rework stations, and burn-in capability. Its shipping, receiving, area is electrostatic discharge safe. 

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The Good

  • PCB Fabrication
  • PCB Assembly
  • Testing and Inspection
  • Experienced with Quality Certifications 
  • PCB Assembly Quote Calculator

PCB Fabrication

Sierra Assembly Technology aims to fabricate high-quality PCBs with fast turnarounds. With several years of experience, the company has continually invested in new technologies and innovative techniques to maintain premium PCB fabrication services. Its fabrications services have a reputation as being best in the industry with a proven record for competitive pricing and completed timelines. 

Sierra Assembly fabricates boards within client specifications and quantities at a reasonable price with exceptional customer service. PCB fabrication services include the following:

  • Rigid flex PCBs
  • HDI PCBs
  • High Tg PCBs
  • Prototype PCBs
  • High frequency PCBs
  • Quick turnaround PCBs
  • PCB functional testing
  • PCB design and layout
  • Flexible PCBs
  • Rogers PCBs
  • Multilayer PCBs
  • LED PCBs
  • Thick Copper PCBs
  • In circuit testing

PCB Assembly

Sierra Assembly Technology caters to specific needs of clients through custom solutions. Its team of expert engineers and experienced staff understand and deliver client requirements. The state of the art facility is well-equipped with the latest in PCB design and assembly equipment to produce high quality products. The PCB assembly services have lead times of one to five days and one to two weeks with scheduled deliveries. 

The company’s PCB assembly services include the following:

  • Prototype PCB assembly
  • Cable and wire harness assembly
  • Testing and inspection
  • Lead free PCB assembly
  • Multiplayer PCB assembly
  • Full turnkey PCB assembly
  • Low cost PCB assembly
  • Mid volume PCB assembly
  • BGA assembly
  • Through hole PCB assembly
  • Quick Turn PCB assembly
  • Box build assembly
  • PCB conformal coating
  • SMT PCB assembly
  • Mixed technology PCB assembly
  • Consignment PCB assembly
  • Low volume PCB assembly
  • High volume PCB assembly
  • PCB assembly rework
  • X-ray inspection

Testing and Inspection

In addition to assembling PCBs, Sierra Assembly Technology also includes testing as part of its assembly service. Its testing and inspection capabilities ensure that assembled circuit boards are free from any defects. The company offers the following testing capabilities:

  • X-ray testing — X-ray testing is commonly performed on quad-fat no-lead (QFN) PCBs and Ball Grid Arrays (BGAs).
  • Visual inspection — Visual inspection is a general quality check of the PCB.
  • Functional testing — Functional testing involves checking the functionality of PCBs and ensures the performance meets expectations.
  • Automated Optical Inspection (AOI) — AOI is used to check whether any components are missing while also checking solder past, polarity, and 0201 components.
  • In-circuit Testing (ICT) — ICT is used to check if there are any shorts or opens in the circuit as well as capacitance, resistance, and other quantities. 

Experienced with Quality Certifications

Quality is imperative at Sierra Assembly Technology and maintained through a stringent quality control system throughout the entire process from PCB design, assembly, to manufacturing. The company offers continuous training and certification programs to employees on a regular basis to maintain industry best practices. Sierra Technology Assembly’s certifications include:

  • ISO 9001:2015+ AS9100D Certified
  • ISO 13485 Certified
  • ITAR Certified
  • J-STD-001 in house Certified Trainer
  • IPC-WHMA-A-620 Certified
  • IPC-CC-830B Compliant
  • All assemblies built to IPC-A-610-D and ANSI/J-STD-001 standards – Class II and Class III only
  • SBA certified, minority-owned, small business – DUNS #016618626, Cage Code 43QS3

PCB Assembly Quote Calculator

Sierra Assembly Technology offers an instant online quote for even complex PCB assemblies through its PCB assembly quote calculator. 

This offers a few advantages to prospective clients: 

  • Clients instantly receive a PCB assembly quote that is transparent.
  • It can be used to get a quick budgetary estimate.
  • The instant quote can be used for urgent PCB assembly services. 

For clients who need more customization for specific requirements, the company also offers custom quotes.

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The Bad

  • Not Many Online Reviews

Not Many Online Reviews

It is hard to gauge customer experience and satisfaction with Sierra Assembly Technology as there are not many reviews on the company published online. Prospective clients can find four testimonials from past clients on the company’s website.

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The Bottom Line

Although there are not many online reviews published on the company, Sierra Assembly Technology has proven experience through its 30 years in business and the vast variety of industries it has served. Its state of the art facility with stringent certifications and comprehensive services starting from PCB design, assembly to manufacturing ensure clients will receive high quality PCBs for their end products. 

If a prospective client wants more information pertaining to client experience and satisfaction with Sierra Assembly Technology, we recommend asking the company for references from past clients. 

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