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  • Chip Component Pad Design Defects

    Chip Component Pad Design Defects

    1. 0.5mm pitch QFP pad length is too long, resulting in short circuit. 2. PLCC socket pads are too short, resulting in false soldering. 3. IC’s pad length is too long and the amount of solder paste is large resulting in short circuit at reflow. 4. Wing-shaped chip pads are too long to affec...
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  • Wave Soldering Surface Components Layout Design Requirements

    Wave Soldering Surface Components Layout Design Requirements

    I. Background description Wave soldering machine welding is through the molten solder on the component pins for the application of solder and heating, due to the relative movement of the wave and PCB and molten solder “sticky”, wave soldering process is much more complex than reflow s...
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  • Tips for Selecting Chip Inductors

    Tips for Selecting Chip Inductors

    Chip inductors, also known as power inductors, are one of the most commonly used components in electronic products, featuring miniaturization, high quality, high energy storage and low resistance. It is often purchased in PCBA factories. When selecting a chip inductor, the performance parameters ...
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  • How to Set Parameters of Solder Paste Printing Machine?

    How to Set Parameters of Solder Paste Printing Machine?

    Solder paste printing machine is an important equipment in the front section of SMT line, mainly using the stencil to print the solder paste on the specified pad, the good or bad solder paste printing, directly affect the final solder quality. The following to explain the technical knowledge of t...
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  • Method for Quality Inspection of PCB

    Method for Quality Inspection of PCB

    1. X – ray pick up check After the circuit board is assembled, X-ray machine can be used to see the BGA underbelly hidden solder joints bridging, open, solder deficiency, solder excess, ball drop, loss of the surface, popcorn, and most often holes. NeoDen X Ray Machine X-Ray Tube Source Spe...
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  • Advantages of PCB Assembly Prototyping for Rapid Construction of New Products

    Advantages of PCB Assembly Prototyping for Rapid Construction of New Products

    Before starting a full production run, you need to make sure your PCB is up and running. After all, when a PCB fails after full production, you can’t afford costly mistakes or, worse, faults that can be detected even after you put the product on the market. Prototyping ensures early elimina...
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  • What Are The Causes and Solutions of PCB Distortion?

    What Are The Causes and Solutions of PCB Distortion?

    PCB distortion is a common problem in PCBA batch production, which will bring considerable influence to assembly and testing. How to avoid this problem, please see below. The causes of PCB distortion are as follows: 1. Improper selection of PCB raw materials, such as low T of PCB, especially pape...
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  • Requirements for The Layout Design of Components for Wave Soldering Surface

    Requirements for The Layout Design of Components for Wave Soldering Surface

    1. Background Wave soldering is applied and heated by molten solder to the pins of components. Due to the relative movement of wave crest and PCB and the “stickiness” of molten solder, the wave soldering process is much more complex than reflow welding. There are requirements for pin ...
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  • 6 Limitations of Selective Wave Soldering Machine

    6 Limitations of Selective Wave Soldering Machine

    Selective wave soldering machine provides a new welding method, which has incomparable advantages over manual welding, traditional wave soldering machine and through-hole reflow oven. However, no welding method can be perfect, and selective wave soldering also has some “limitations” d...
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  • What Is The Difference Between Laser Welding and Reflow Welding?

    What Is The Difference Between Laser Welding and Reflow Welding?

    Introduction to reflow oven Reflow oven uses flux coating, then preheating circuit board/activated flux, and then using welding nozzle for welding mode. The traditional artificial soldering iron welding needs to use point-to-point welding for each point of the circuit board, so there are more wel...
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  • What Are The Advantages of SMT Processing Technology?

    What Are The Advantages of SMT Processing Technology?

    SMT processing process: First on the surface of printed circuit board solder coating solder paste, again with SMT machine components of metallized terminal or pin accurately on the bonding pad of solder paste, then put the PCB with components in the reflow oven whole heated to melting solder pas...
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  • What Does a Selective Wave Soldering Machine do?

    What Does a Selective Wave Soldering Machine do?

    Selective Wave Soldering Machine Types 1. Mask selective wave soldering Mask selective wave soldering is a selective welding process that uses mask to expose the welding areas and cover the areas that do not need welding. It is widely used and suitable for the production of small and medium batch...
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