Mark points, also known as optical marks or reference points, are critical for component assembly in PCBs, particularly in the context of PCBA (Printed Circuit Board Assembly) for automatic placement machines. The choice and placement of Mark points directly impact the efficiency of the automatic pick-and-place machine, so it’s essential to carefully design these points […]
The Importance of Mark Points in PCB Design for SMT Read More »
The proper placement of electronic components on a PCB (Printed Circuit Board) is a critical factor in reducing soldering defects. A well-planned layout plays a significant role in the overall quality of the assembly. When designing the layout, components should be placed in areas with minimal bending and internal stress, and their distribution should be
The Importance of Component Layout Near PCB Edges in PCBA Read More »
One of the most fundamental considerations in PCB design is determining how many routing layers, ground planes, and power planes are needed to meet the circuit’s functional requirements. The stack-up design of the PCB is usually a compromise, taking various factors into account. Below are the key principles for PCB stack-up design. stack-up Planning Outer
For PCB nesting, engineers are familiar with the basic rules, such as spaced or non-spaced nesting, using V-CUT or stamp holes for connections, adding process edges, positioning holes, and mark points. However, PCB come in various shapes, and simply following these basic rules is not enough. It is crucial to understand the production process in
The assembly quality of SMT (Surface Mount Technology) is directly related to the PCB pad design, and the size ratio of the pads is crucial. If the PCB pad design is correct, minor misalignment during placement can be corrected during the reflow soldering process (known as self-alignment or self-correction effect). On the other hand, if
In the design of electronic products, from creating the schematic to PCB layout and routing, various errors can occur due to a lack of experience or knowledge, which can hinder progress and, in severe cases, render the circuit board unusable. To prevent such issues, it is essential to improve our understanding of this area and
How to Avoid Pitfalls in PCB Hole and Slot Design Read More »
A PCB (Printed Circuit Board) is an essential electronic component, often referred to as a printed circuit or printed wiring board. The quality of the PCB largely determines the performance of electronic components, making testing a critical part of the PCB production process. Testing typically identifies functional defects, such as opens, shorts, and other issues
Do You Understand the Four Major PCB Testing Methods? Read More »
There are many safety distance considerations in PCB design, including spacing between traces, character spacing, pad spacing, and more. Here, we classify them into two categories: electrical-related safety distances and non-electrical-related safety distances. 01 Electrical-Related Safety Distances Trace-to-Trace Spacing For the processing capabilities of mainstream PCB manufacturers, the minimum distance between traces should not be
8 Safety Distances That Must Be Considered in PCB Design Read More »
The production of single-sided or double-sided PCBs typically involves drilling non-conductive or conductive holes directly after the material is cut, while multi-layer boards are drilled after the lamination process. Holes are categorized based on their function, including component holes, tool holes, through holes (Vias), blind holes, and buried holes (blind and buried holes are a
Reliability Analysis of Hole Spacing in PCB Design Read More »
PCB design is a complex process that involves various unforeseen factors that can impact the overall outcome. To ensure high-quality PCB production on time—without extending design time or incurring costly rework—design and circuit integrity issues must be identified early in the process. However, there are many minor details in PCB design that, if overlooked, can
PCB Manufacturability Design and Case Analysis: Silkscreen, Outline, and Panelization Read More »
Vias are an unavoidable aspect of PCB design. During the layout process, avoiding all crossover lines is often challenging. To resolve this, vias are used to achieve interlayer connectivity, leading to the development of double-sided and multilayer PCBs. Consequently, vias have become a critical element of PCB design. From a design perspective, vias serve two
PCB Manufacturability Design and Case Analysis: Holes and Slots Read More »
When a PCB engineer lays out a product, it involves more than just component placement and routing. Designing the power and ground planes in the inner layers is equally critical. Managing inner layers requires consideration of power integrity, signal integrity, electromagnetic compatibility, and Design for Manufacturability. Difference Between Inner Layers and Outer Layers Outer layers
Typically, PCB uses V-CUTs. Stamp holes are more likely to be used when dealing with irregular or circular boards. Stamp hole bridges connect boards (or empty boards) primarily to provide support, ensuring the boards do not separate during processing. This also prevents mold collapse during molding. Stamp holes are most commonly used to create independent
Proper installation of electronic components on the PCB is crucial to reducing soldering defects. When arranging electronic components, avoid areas with high deflection values and high internal stress. Distribute components evenly, especially those with high thermal conductivity. Avoid using oversized PCBs to prevent expansion and contraction. Poor PCB layout design can affect the PCB’s manufacturability and
Importance of PCB Layout about Electronic Components in PCBA Read More »
The solder mask layer on a PCB refers to the part of the board covered with green solder resist ink. Areas with solder mask openings are left without ink, exposing the copper for surface treatment and soldering components. Areas without openings are covered with solder mask ink to prevent oxidation and leakage. Three Reasons for
How to Prevent Solder Mask Omission in PCB Design Read More »
In computer memory modules and graphics cards, there is a row of golden conductive contact pads, commonly known as “gold fingers.” In the PCB design and manufacturing industry, the PCB gold finger (Gold Finger or Edge Connector) refers to the connector used as the external interface for the PCB to connect to external devices. In
Entire Process of Gold Finger PCB in Design and Manufacturing Read More »
The Bill of Materials (BOM) for electronic products is a straightforward yet intricate task. With numerous components, even a minor oversight can lead to procuring the wrong components. Manual matching increases the risk of errors. If mistakes occur during the BOM matching stage, subsequent procurement inquiries and customer quotes are likely to be flawed as
Assisting BOM Error Checking to Support Component Procurement Read More »
PCB design requires attention to numerous safety distances, including trace spacing, text spacing, and pad spacing. These considerations can generally be categorized into two types: electrical safety distances and non-electrical safety distances. 01 Electrical Safety Distances Trace-to-Trace Spacing For mainstream PCB manufacturers, the minimum spacing between traces must not be less than 0.075mm. The minimum
