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What are Gold Fingers Made Of? Gold fingers are typically made of copper, which is then plated with a layer of nickel and a final layer of gold. The copper provides excellent electrical conductivity, while the nickel layer acts as a barrier to prevent the copper from diffusing into the gold layer. The gold plating ensures a corrosion-resistant, durable, and highly conductive surface for reliable electrical contact. The thickness of the gold plating is usually Read more…

How Mid-Chip Solder Balls Work Mid-chip solder balls are typically arranged in an array pattern on the active side of the semiconductor chip. The solder balls are deposited onto the chip’s bond pads, which are the metal connection points that link the chip’s circuitry to the outside world. The bond pads have a metallization stack that is compatible with the solder material, usually consisting of layers such as copper, nickel, and gold. During the flip Read more…

Common BGA Soldering Errors Several factors can contribute to BGA soldering defects, such as improper solder paste application, incorrect reflow profile, poor package handling, and PCB design issues. The following are some of the most common BGA soldering errors: Bridging Open joints Head-in-pillow (HIP) Solder Voids Misalignment Tombstoning Solder Beading Insufficient or excessive solder Lifted Pads Damaged packages Let’s discuss each error category in detail. Bridging Bridging occurs when solder forms an unintended connection between Read more…

Visual Inspection Visual inspection is the most basic and straightforward method of testing PCBs. It involves examining the board with the naked eye or using magnifying tools to identify any visible defects or irregularities. Some common issues that can be detected through visual inspection include: Incorrect component placement Solder bridges or shorts Insufficient or excessive solder Damaged or missing components Contamination or foreign objects on the board While visual inspection is a quick and cost-effective Read more…

Introduction Printed Circuit Board (PCB) soldering is a crucial process in the manufacturing of electronic devices. It involves the attachment of electronic components to the PCB using solder, a metal alloy that melts at a relatively low temperature. However, the soldering process is not always perfect, and various defects can occur, leading to malfunctions or complete failure of the electronic device. In this article, we will discuss nine common PCB Soldering defects and their solutions. Read more…

What are Plated Through Holes? Plated Through Holes, also known as PTHs, are small holes drilled through a printed circuit board that are electroplated with a conductive material, typically copper. These holes allow electrical signals to pass from one layer of the PCB to another, creating electrical connections between components on different layers. PTHs are crucial in PCB design as they enable the creation of multi-layer boards, which are essential for complex electronic devices that Read more…

Why are PCB Mouse Bites Used? PCB mouse bites are used for several reasons in the PCB manufacturing process: Cost-effective manufacturing: Producing multiple PCBs on a single panel reduces manufacturing costs and time compared to producing individual boards. Easier handling: Larger panels with multiple PCBs are easier to handle during the manufacturing process, as they can be moved and processed as a single unit. Improved quality control: Manufacturing PCBs on a panel allows for better Read more…

Introduction to Non-Plated Through Holes Non-Plated Through Holes (NPTH) are a type of hole found in printed circuit boards (PCBs) that are not plated with a conductive material, such as copper. These holes are used for various purposes, including mounting components, providing mechanical support, and allowing for the passage of non-electrical elements like air or light. Unlike Plated Through Holes (PTH), which are coated with a conductive material to create electrical connections between layers of Read more…

Types of PCB Soldering There are several types of PCB soldering techniques, each with its own advantages and disadvantages. The most common types include: Through-hole soldering Surface mount soldering Wave Soldering Reflow soldering Selective soldering Through-hole soldering Through-hole soldering is a traditional soldering method where electronic components with long leads are inserted into drilled holes on the PCB. The leads are then soldered to the copper pads on the opposite side of the board. This Read more…

Introduction to PCB Assembly Printed Circuit Board (PCB) assembly is a critical process in the manufacturing of electronic devices. It involves the placement and soldering of electronic components onto a printed circuit board, creating a functional electronic system. PCB assembly services have become increasingly important as the demand for electronic devices continues to grow across various industries, including consumer electronics, automotive, aerospace, and medical devices. In this comprehensive guide, we will explore the world of Read more…