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What is PCB Interconnect Stress Testing (IST)?

Editorial Team - PCB Directory

Jun 14, 2020

PCB Interconnect Stress Testing (IST) is a process to identify failures in vias and multilayer interconnects by consistently monitoring resistance variations. This testing is performed on a PCB test coupon, where it undergoes several thermal cycles. These thermal cycles are created by applying current to a specific test coupon. IST is a way to check the reliability of the PCB board. This process a...read more

What is High Potential (HiPot) Testing?

PCB Testing

Editorial Team - PCB Directory

Mar 14, 2020

The High Potential (HiPot) test is conducted to check whether the dielectric material of a PCB board can withstand a voltage higher than its rated voltage without breaking down. This is a type of stress test helps measure the dielectric strength of the PCB substrate which in turn helps to measure the insulation capability of the Device Under Test (DUT). It also gives an idea to how much voltage th...read more

What is a PCB Test Coupon?

Editorial Team - PCB Directory

Apr 24, 2020

During the PCB Manufacturing process, it is important to evaluate the quality of the boards being fabricated. A good way to do this is to fabricate a few extra boards called PCB Test Coupons which can be tested to evaluate the performance of the boards. PCB Test Coupons are designed to have the same spec (trace width, copper weight, via structure, etc.) as the original PCB board and are tested to ...read more

What is PCB Flying Probe Testing? How Does it Work?

PCB Testing

Editorial Team - PCB Directory

Oct 5, 2023

Flying Probe Testing (FPT) is an advanced and highly automated method of testing printed circuit boards (PCBs) for defects and ensuring their functionality and quality. Unlike traditional testing methods that use fixed fixtures and probes, Flying Probe Testing employs automated robotic probes that move over the surface of the PCB, contacting test points, components, and traces.PCBs facilitate the ...read more

What is PCB Grid Testing / Bed of Nails Testing?

PCB Testing

Editorial Team - PCB Directory

Mar 14, 2020

Grid testing or Bed of Nails testing is a process used to check the performance of components mounted on a PCB board. This test uses a frame/fixture that contains various pins inserted into an epoxy phenolic glass cloth laminated sheet (G-10) in order to access all the PCB test points. These pins act as sensors which are aligned to make contact with the test points on the PCB board and are also co...read more

Understanding Accelerated Life Testing (ALT) in PCB Reliability Analysis.

Editorial Team - PCB Directory

Sep 19, 2023

Printed Circuit Boards (PCBs) are fundamental components in modern electronic devices, serving as the backbone for interconnecting various electronic components. Ensuring the reliability of PCBs is crucial due to their pervasive use in industries such as electronics, automotive, aerospace, telecommunications, and more. The failure of a PCB can result in disrupted communication, compromised data in...read more

What is a PCB Coating Thickness Gauge?

PCB Testing

Editorial Team - PCB Directory

Dec 12, 2023

A Coating Thickness Gauge is a precision instrument designed to measure the thickness of coatings on various substrates. It utilizes different principles, such as eddy currents or magnetic fields, to provide accurate and non-destructive measurements.Importance of Coating Thickness in PCB Assembly:In PCB assembly, coating thickness plays a pivotal role in ensuring the reliability and functionality ...read more

What is Soak Testing?

PCB Testing

Editorial Team - PCB Directory

Mar 14, 2020

Soak Testing also known as Load Testing or Endurance testing is test performed to check the stability of the PCB over various extreme operating conditions for extended periods of time. For example, a PCB board may perform normally when used for 2 hours, but when the same board is used for 10 hours or more than that, then it may fail. Soak Testing is done to evaluate how the board will operate unde...read more

Understanding Non-Destructive Testing (NDT) in PCBs.

PCB Testing

Understanding Non-Destructive Testing (NDT) in PCBs.

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From Faults to Perfection: How to Avoid Common PCB Defects?

Editorial Team - PCB Directory

Jul 26, 2023

Preventing PCB defects is of significant significance in the manufacturing process. Defects can severely impact the reliability and performance of electronic devices, leading to malfunctions or even complete failure. By detecting and addressing defects early on, manufacturers can enhance the quality and longevity of their products while minimizing the need for costly repairs or replacements. Moreo...read more

What is PCB Backplane Testing?

PCB Testing

Editorial Team - PCB Directory

Sep 30, 2019

A backplane is an electronic system which contains slots and sockets to interconnect various PCB assemblies or devices in parallel to each other. It acts like a ‘Backbone’ for an electronic system and distributes low-voltage power to each slot.Backplane testing evaluates the working of backplanes and passive electronic components such as resistors, capacitors, and diodes. The backplane...read more

What is PCB Bow and Twist?

PCB Testing

Editorial Team - PCB Directory

Mar 14, 2020

PCB Bow and Twist are parameters that determine alignment errors in a PCB board based on its flatness. The PCB Bow tests the spherical or cylindrical curvature of the board, when its four corners lie in the same plane. The PCB twist tests if any one corner of the PCB is different from the others four in terms of flatness. A board with a bow issue will lift off the surface despite all corners of th...read more

What is Flying Probe Testing?

PCB Testing

Editorial Team - PCB Directory

Mar 14, 2020

Flying Probe Testing (FPT) is a automated test used evaluate proper operation of components on a PCB board. In this test two or more probes are programmed to move across the board in the air and access various component pins one by one to detect faults like Opens, Shorts, Resistance values, Capacitance values, and Component Orientation.These probes have high precision needles which are programmed ...read more

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