SMT, short for Surface Mount Technology, originated in the 1960s, involves directly mounting SMD components onto PCBs. Its greatest advantage is the high wiring density per unit area of each component, which shortens connection lines and improves electrical performance. Below, I will quickly guide you through the SMT process flow. (This is SMT) 01 SMT … Read more
From slash-and-burn agriculture to mechanized production, every transformation in agriculture has profoundly impacted human civilization. Today, amidst the wave of digitalization and intelligence, agriculture is ushering in unprecedented opportunities for transformation. Sensors have replaced the experience of traditional farmers, algorithms have optimized millennia-old farming practices, and behind this is a series of precision electronic hardware … Read more
The inverter circuit board is a core component of the inverter, responsible for controlling and regulating its operation. This article will provide a detailed introduction to various components on the inverter circuit board, including resistors, capacitors, inductors, diodes, transistors, IGBTs, optocouplers, and crystal oscillators. 1. Resistors Resistors are commonly used components on circuit boards, used … Read more
[PCB Information Network] The X circuit board factory has been operating at a loss for three consecutive months. Seeing the unfavorable trend, the owner decisively replaced the production director.A PCB industry leader once said, “We must seek efficiency through management!” They hired a management expert, hoping he could turn the situation around. The new production … Read more
The design differences of contact points have varying impacts on contact quality and reliability, accessibility, and subsequent solderability, which are negligible for small contact points. 1. Component Testing As the BGA pitch and solder ball size decrease, the design of socket manufacturers faces increasing challenges to adequately test BGA packages. Socket manufacturers are focusing on … Read more
1. Classification of Black Screen Issues and Corresponding Solutions Black Screen Type Accompanying Symptoms Possible Causes Repair Cost Complete Black Screen Power light off Power board failure 50-100 RMB Backlight On, No Image Indicator light stays on Main board / Logic board issue 100-300 RMB Screen Lights Up Then Turns Off Indicator light blinks Backlight … Read more
1.Flexible Circuit Board Plating (1) Pre-treatment for FPC Plating: The surface of the copper conductors exposed after the coating process of the flexible printed circuit board (FPC) may be contaminated with adhesives or inks, and may also have oxidation or discoloration due to high-temperature processes. To achieve a tightly bonded plating layer with good adhesion, … Read more
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To facilitate rework, it is recommended to provide sufficient spacing (3mm to 5mm) around the BGA. It is advisable to adopt the upper limit of the spacing, especially when CBGA uses a stepped stencil for solder paste deposition and when hot air is used for rework. However, if a diode laser system is used for … Read more
The recycling of waste circuit boards is a promising industry, but it also requires consideration of its specific risks and challenges. 1. Potential of Waste Circuit Board Recycling Waste circuit boards contain various metals and non-metal materials, such as copper, iron, aluminum, tin, nickel, etc., including small amounts of precious metals like gold and silver. … Read more