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A Unit Under Test (UUT) refers to the specific electronic device or component that is being tested for functionality, performance, and quality. In the context of PCB testing, the UUT typically refers to the printed circuit board (PCB) or any electronic assembly that is undergoing various tests to ensure it meets the required specifications and standards.

At Mirotech, we have over 20 years of experience in the electronics industry, having developed hundreds of test fixtures.

Unit Under Test (UUT) Test Fixture for a PCB board

Keypoints to note:

  • Detects errors such as opens and shorts
  • Verifies circuit logic functionality
  • Crucial tool for PCB quality control

Manufacturing such fixtures typically take four to six weeks.

Unit Under Test (UUT) Test Fixtures and Their Uses

Testing Objectives: The goal is to verify the electronic device or component’s functionality, performance, and quality, ensuring it operates correctly and meets design specifications.

Testing Methods: Various methods can be used to test the UUT, including in-circuit testing (ICT), functional testing, and environmental stress testing.

Testing Equipment: Specialized equipment like bed of nails test fixtures, burn-in racks, and custom test rigs are often used.

Data Collection: During testing, data is collected on the UUT’s performance, which is then analyzed to identify any defects or areas of improvement.

Importance: Testing the UUT is crucial for quality assurance in the manufacturing process, helping to ensure that only fully functional and reliable products reach the market.

Typical Bed of Nails Configurations for PCB Testing

Bed of nails fixture designs employ a wide array of spring-loaded pins to contact test points on PCBs, catering to various application needs beyond the basic pogo pin bed. The standard grid array is the most common design, featuring pogo pins arranged in a regular grid of rows and columns, suitable for many boards. For irregularly shaped boards or difficult access points, custom layouts optimize test coverage by matching PCB test pad locations. Clamshell fixtures, with hinged top and bottom pogo pin jig plates, allow access to both sides of the boards by closing over them like a clamping cradle. Flying probe hybrids integrate movable flying probes on x-y axes to reach test nodes that fixed nail positions cannot access. For simpler boards, minimal fixtures or “micro” bed of nails with small matrices of pogo pins reduce setup costs when only a few nodes require validation.

Mirotech manufactures bed of nails test fixtures in the Greater Toronto Area, providing high-quality solutions for efficient and accurate PCB testing.

Unparalleled Service

At our test fixture company, we specialize in providing comprehensive testing solutions across the Greater Toronto Area, Ontario. Our expert test engineers visit your site to thoroughly assess your unique needs and develop tailored solutions that ensure optimal performance and reliability. From initial consultation to implementation, we are committed to delivering high-quality, efficient services that meet the specific requirements of your projects. Trust us to be your partner in achieving excellence in testing and development.

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