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Time of issue:2020-07-15 00:00:00
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Introduction to the production steps and requirements of PCBA test racks
Introduction
The PCBA test stand, as the name suggests, is a device for testing the finished PCBA. However, many PCBA test racks now only add a few pressure plate buckles to the rack, and use thimble and pressure plate buckles to fix the PCBA. In the PCBA function test, the PCBA is pressed into the pressure plate buckle with both hands for the test, but this test method often causes the PCBA to be unevenly stressed or not pressed down in place, resulting in poor contact between the test pin and the PCBA. It also largely affects the test efficiency and accuracy. If the PCBA is pressed down with too much force, it is not only easy to deform or damage the PCBA, but also to damage the test pins of the test frame.
Therefore, the best solution to the above test problems is to make...
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The PCBA test stand, as the name suggests, is a device for testing the finished PCBA. However, many PCBA test racks now only add a few pressure plate buckles to the rack, and use thimble and pressure plate buckles to fix the PCBA. In the PCBA function test, the PCBA is pressed into the pressure plate buckle with both hands for the test, but this test method often causes the PCBA to be unevenly stressed or not pressed down in place, resulting in poor contact between the test pin and the PCBA. It also largely affects the test efficiency and accuracy. If the PCBA is pressed down with too much force, it is not only easy to deform or damage the PCBA, but also to damage the test pins of the test frame.
Therefore, the best solution to the above test problems is to make...
The difference between PCBA processing reflow soldering and wave soldering
The
In PCBA processing, the two most common soldering methods are reflow soldering and wave soldering. So what exactly are they? What is the role of each? Let's take a brief look at the following Sanjing belts.
First, let's take a look at reflow soldering. Reflow soldering refers to the electrical interconnection of the pins or solder ends of the electronic components pre-mounted on the pads with the pads on the PCB by heating and melting the solder paste pre-coated on the pads to achieve the electronic The purpose of soldering components on the PCB board. Reflow soldering is generally divided into three parts: preheating zone, heating zone and cooling zone.
Reflow soldering process:...
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In PCBA processing, the two most common soldering methods are reflow soldering and wave soldering. So what exactly are they? What is the role of each? Let's take a brief look at the following Sanjing belts.
First, let's take a look at reflow soldering. Reflow soldering refers to the electrical interconnection of the pins or solder ends of the electronic components pre-mounted on the pads with the pads on the PCB by heating and melting the solder paste pre-coated on the pads to achieve the electronic The purpose of soldering components on the PCB board. Reflow soldering is generally divided into three parts: preheating zone, heating zone and cooling zone.
Reflow soldering process:...
About PCBA sub-board machine introduction
About
The splitting machine, as the name suggests, is a device for splitting (PCB splicing) boards, that is, an electronic device necessary for PCBA manufacturers, which cuts the PCB splicing through the movement of the blade. Generally, after the PCBA soldering is completed, the board is divided, and then the test is performed.
There are some small and medium-sized PCBA processing plants that use manual splitting, which not only costs manpower, but also easily damages the PCBA board, so it is safer to use machine splitting. The board splitting machine can more effectively control the stress generated when splitting the board, can prevent the damage or displacement of the components, and have a greater guarantee for the product quality...
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The splitting machine, as the name suggests, is a device for splitting (PCB splicing) boards, that is, an electronic device necessary for PCBA manufacturers, which cuts the PCB splicing through the movement of the blade. Generally, after the PCBA soldering is completed, the board is divided, and then the test is performed.
There are some small and medium-sized PCBA processing plants that use manual splitting, which not only costs manpower, but also easily damages the PCBA board, so it is safer to use machine splitting. The board splitting machine can more effectively control the stress generated when splitting the board, can prevent the damage or displacement of the components, and have a greater guarantee for the product quality...
What are the requirements of the wave soldering process for PCBA
What
In the PCBA processing technology, wave soldering is an extremely important link, and there are strict requirements for PCBA boards, which are mainly reflected in the requirements for PCB design, component placement, material solderability characteristics, and flux. What are the specific requirements for these aspects? Let's take a look at Sanjing below.
The first one is the requirements for PCB design. The layout and direction of the components should follow the principle of smaller components in the front and avoid mutual shielding as much as possible.
The second is the requirements for printed circuit boards. The PCB should have heat resistance that can withstand the high temperature of...
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In the PCBA processing technology, wave soldering is an extremely important link, and there are strict requirements for PCBA boards, which are mainly reflected in the requirements for PCB design, component placement, material solderability characteristics, and flux. What are the specific requirements for these aspects? Let's take a look at Sanjing below.
The first one is the requirements for PCB design. The layout and direction of the components should follow the principle of smaller components in the front and avoid mutual shielding as much as possible.
The second is the requirements for printed circuit boards. The PCB should have heat resistance that can withstand the high temperature of...
What requirements need to be met for PCBA board rework
What
As we all know, in addition to PCBA production and processing, PCBA repair is also a very important link. Once the repair process is not good, the PCBA board will be scrapped, which will affect the product yield. So, what are the requirements for PCBA board rework? The following Sanjing will give you a brief understanding:
First of all, the first is the baking requirements of PCBA and moisture-sensitive components.
All new components to be installed must be baked and dehumidified in accordance with the moisture sensitivity level and storage conditions of the components and the relevant requirements in the "Specifications for the Use of Moisture Sensitive Components". If the repair process needs to be heated to above 110°C, or there are other moisture-sensitive components within 5mm of the repaired area, it must...
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As we all know, in addition to PCBA production and processing, PCBA repair is also a very important link. Once the repair process is not good, the PCBA board will be scrapped, which will affect the product yield. So, what are the requirements for PCBA board rework? The following Sanjing will give you a brief understanding:
First of all, the first is the baking requirements of PCBA and moisture-sensitive components.
All new components to be installed must be baked and dehumidified in accordance with the moisture sensitivity level and storage conditions of the components and the relevant requirements in the "Specifications for the Use of Moisture Sensitive Components". If the repair process needs to be heated to above 110°C, or there are other moisture-sensitive components within 5mm of the repaired area, it must...
PCBA wave soldering parameter setting
PCBA
For PCBA manufacturers, if they want to produce a perfect PCBA circuit board, they must strictly control every production link. Today we will mainly introduce wave soldering and its parameter settings.
When it comes to PCBA wave soldering parameter settings, people who don’t know may think that it is enough to control the temperature of the tin furnace and the height of the tin wave, but things are often not as simple as we think. In addition to controlling the temperature of the tin furnace and the height of the tin wave, there are also many parameter settings. So how to set PCBA wave soldering parameters? The following...
See more information
For PCBA manufacturers, if they want to produce a perfect PCBA circuit board, they must strictly control every production link. Today we will mainly introduce wave soldering and its parameter settings.
When it comes to PCBA wave soldering parameter settings, people who don’t know may think that it is enough to control the temperature of the tin furnace and the height of the tin wave, but things are often not as simple as we think. In addition to controlling the temperature of the tin furnace and the height of the tin wave, there are also many parameter settings. So how to set PCBA wave soldering parameters? The following...
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