Testing and Inspection

Testing and Inspection

At Sierra Assembly, we understand that customers require their circuit board assemblies to be durable. The performance of a circuit board can only be long-lasting when regular maintenance, repair, and rework is performed.  

At Sierra Assembly, we understand that customers require their circuit board assemblies to be durable. The performance of a circuit board can only be long-lasting when regular maintenance, repair, and rework is performed. We at Sierra Assembly provide end-to-end testing and inspection services to support the assemblies we provide to our clients.

PCB Assembly Testing and Inspection at Sierra Assembly

We perform testing and inspection procedures early on during the assembly process. This allows us to detect defects early on, and ensure a finished high quality product. What sets us apart from other PCB assembly service providers is that we employ multiple testing and inspection procedures to ensure that the quality of our PCB assemblies is of the highest level. By ensuring thorough inspection, we can reduce the number of rework sessions. However, we also provide rework services for clients who wish to modify their current PCBs.

Testing and Inspection Capabilities

Our testing and inspection equipment are suitable for simple as well as complex PCB assembly requirements. We can take on extremely demanding projects, and ensure high quality product yield. Given below are our testing and inspection equipment and capabilities:

ICT – In Circuit Testing

  • GenRad 2283 & GenRad 2280S:
  • Bed of nails with fixture
  • Open express equipped & Boundary Scan capable

X-Ray System

  • Glen Brook RTX-113
  • Vision Systems
  • Scienscope:
  • 19" camera system
  • Microscopes
  • Mantis
  • Clear view
  • Vision Engineering


  • Inspection Microscope
  • Tektronix 7704A Oscilloscope
  • Bandit APE Rework Station for QFP & BGA components
  • Sony color 65 power inspection camera with color monitor

Mechanical Assembly / Wire Harness

  • Carpenter Model 70D wire stripper
  • Cirrus 1100 H+ Hi Pot Cable Tester
  • Ideal Industries Model 45-145 Wire strip
  • Pico crimping Tools Model 400B crimp master
  • Ideal Industries Model 45-754 Measure, cut, & strip

Nordson/Yestech Benchtop Automated Optical Inspection System for (AOI)- Model-BX AOI

  • Its features include:
  • 5 megapixel color imaging
  • 1 top-down & 4 side angle cameras
  • Quick set-up
  • High speed
  • High defect coverage
  • Low false failure rate

Nordson YESTECH's advanced 5 megapixel color camera imaging technology offers benchtop PCB inspection with exceptional defect coverage. This benchtop system inspects solder joints and verifies correct part assembly enabling users to improve quality and increase throughput. The optional four side viewing cameras add additional inspection capabilities found only on in-line systems.

Programming the BX is fast and intuitive. Operators typically take less than 30 minutes to create a complete inspection program including solder inspection. The BX utilizes a standard package library to simplify training and ensure program portability across manufacturing lines. Programs created with the BX are also compatible with Nordson YESTECH's complete line of AOI systems.

Advanced Fusion Lighting™ and newly available 5 megapixel image processing technology integrates several techniques, including color inspection, normalized correlation and rule-based algorithms, to provide complete inspection coverage with an extremely low false failure rate.

The BX is equally effective for paste, pre / post-reflow and even final assembly inspection. Remote programming maximizes machine utilization and real-time SPC monitoring provides a valuable yield enhancement solution.

EVOCAM II Digital Microscope

Capable. Powerful. Adaptable.

EVO Cam II is a powerful, versatile, yet easy-to-use, high definition digital microscope. Flexible configuration options deliver excellent image quality and optical magnification up to 760x. Digital zoom takes you further. What’s more, a range of precision objectives and wide-field lenses let you choose a configuration that’s an exact match for your unique and individual needs. It’s everything you would expect from a Vision Engineering microscope.

If you have any queries about our PCB assembly and testing processes, feel free to contact us. You can call us at 909.606.7700 , or send an email at sales@sierraassembly.com .

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Download our brochure to know more about capabilities.

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