Expertise in R&D and Manufacturing of Home Appliances intelligent Controllers View all

The hazards of PCB board deformation

Views : 705
Update time : 2021-05-07 15:56:15

When the circuit board undergoes reflow soldering, it is prone to board bending and warping. In severe cases, it may even cause empty soldering of components.
In the automated surface mount line, if the circuit board is not flat, it will cause inaccurate positioning, components cannot be inserted or mounted on the holes and surface mount pads of the board, and even the automatic insertion machine will be damaged. The circuit board on which the components are installed is bent after soldering, and the component feet are difficult to cut neatly. The board cannot be installed on the chassis or the socket inside the machine, so it is also very annoying for the assembly plant to encounter the board warping. The current surface mount technology is developing in the direction of high precision, high speed, and intelligence, which puts forward higher flatness requirements for PCB boards that are home to various components.
In the IPC standard, it is specifically pointed out that the maximum allowable deformation of PCB boards with surface mount devices is 0.75%, and the maximum allowable deformation of PCB boards without surface mounting is 1.5%.
The PCB board is composed of copper foil, resin, glass cloth and other materials. The physical and chemical properties of each material are different, and thermal stress will inevitably occur after being pressed together, which will cause deformation. At the same time, in the PCB processing process, it will go through various processes such as high temperature, mechanical cutting, wet treatment, etc., which will also have an important impact on the deformation of the board. In short, the reasons for the deformation of the PCB can be complex and diverse. How to reduce or eliminate the material characteristics Distortion or deformation caused by processing has become one of the most complicated problems faced by PCB manufacturers.

Related News
Join Us at ZUCHEX 2023- Unveiling Innovation at Booth M-41 Hall 12A
Join Us at ZUCHEX 2023- Unveiling Innovation at Booth M-41 Hall 12A
Sep .13.2023
We(Elecontro® Electronics) are delighted to announce our company's participation .the 33rd International Home & Kitchenwares Fair ,our booth No M-41 ,12A Hall that is scheduled to take place from September 14 to 17 September , 2023.
How to test an oven control board?
How to test an oven control board?
Jul .13.2023
An oven control board is the brain of your oven. It controls all of the oven's functions, from temperature regulation to timer settings. If your oven is not functioning properly, it may be due to a faulty control board. Here's how to test your oven control board
Gas Oven Control Board:Knowledge Points
Gas Oven Control Board:Knowledge Points
Jun .29.2023
A gas oven control board is a critical component of any gas oven. It is responsible for controlling the temperature of the oven, as well as the various cooking functions. If the control board fails, the oven may not heat up properly, or it may not function at all.
Elecontro® Announces High-Quality EM20 TFT display Oven Control Board!
Elecontro® Announces High-Quality EM20 TFT display Oven Control Board!
Jun .15.2023
Elecontro®, a leading kitchen appliance control board R&D manufacturer.We are committed to providing our customers with high-quality, innovative, and user-friendly control boards.
pop_close
pop_main
Subscribe to Elecontro® below for more information