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Category Archives: Process
Aug22
What is ENIG Surface Finished for Circuit Boards? What Are Its Advantages and Disadvantages?
ENIG (Electroless Nickel Immersion Gold), also known as immersion gold (Au), chemical Ni/Au, or soft gold, is a type of surface finished for printed circuit boards (PCBs). It is widely used in the assembly of mobile phone circuit boards and … Continue reading
Aug15
Causes of Poor Solderability on HASL Finished PCBs (Data Collection and Analysis)
Workingbear personally doesn’t recommend using HASL (Hot Air Solder Leveling) surface-finished PCBs in today’s SMT reflow processes, especially for double-sided reflow or fine-pitch components located on 2nd side. The defect rate of soldering with HASL is quite high and hard … Continue reading
Jul18
Why Do Electronic Products Need Burn-In? What Are Its Pros and Cons? What Is Run-In?
In the early days, when electronic component design and manufacturing were still developing, the “burn-in” solution was used to screen out defective electronic components and products. This process allowed early-failing products to be identified and eliminated, preventing defective items from … Continue reading
Jul11
What Is the Purpose of Testing Electronic Products? It’s Like Buying Insurance!
Workingbear has been in the electronics industry for several years and has noticed an interesting phenomenon. Almost every new manager will ask the same questions when they come on board: “Why do we need to perform ICT (In-Circuit Test) at … Continue reading
Jun27
What is Function Verification Test (FVT) for Assembled Circuit Boards?
Function verification tests (FVT), or call Function Circuit Tests (FCT), are crucial for detecting defects in PCBA (Printed Circuit Board Assembly). These tests simulate the full functionality of the circuit board as if it were part of the final product. … Continue reading
