News
-
Four Common Temperature Sensor Types
Temperature sensors are one of the most common technologies used in many products today, such as automobiles, white electricity and industrial products. In order to carry out reliable temperature measurement, it is very important to select the appropriate temperature sensor for application. Under...Read more -
Cautions for Board Welding Process
1. Before PCB put into reflow oven welding, ensure that the pads of components and circuit boards are weldable (clean, no dirt, no oxidation, etc.). 2. Wear antistatic caps when processing and welding. 3. Wear ESD gloves during welding to avoid electric shock. 4. If the electric iron needs to be ...Read more -
The Working Principle of Cystal Oscillator
Summary of crystal oscillator Crystal oscillator refers to the wafer cut from a quartz crystal according to a certain azimuth Angle, quartz crystal resonator, referred to as quartz crystal or crystal oscillator; The crystal element with IC added inside the package is called crystal oscillator. It...Read more -
Cause and Solution of PCB Board Deformation
PCB distortion is a common problem in PCBA mass production, which will have a considerable impact on assembly and testing, resulting in electronic circuit function instability, circuit short circuit/open circuit failure. The causes of PCB deformation are as follows: 1. Temperature of PCBA board p...Read more -
The Basic Principle of BGA Rework Station
BGA rework station is a professional equipment used to repair BGA components, which is often used in the SMT industry. Next, we will introduce the basic principle of BGA rework station and analyze the key factors to improve the repair rate of BGA. BGA rework station can be divided into optical co...Read more -
What Do You Need to Know about Selective Wave Soldering?
Types of selective wave soldering machine Selective wave soldering is divided into two types: offline selective wave soldering and online selective wave soldering. Offline selective wave soldering: off-line means off-line with the production line. Flux spraying machine and selective welding machi...Read more -
Why Does PCBA Board Deform?
In the process of reflow oven and wave soldering machine, PCB board will be deformed due to the influence of various factors, resulting in poor PCBA welding. We will simply analyze the cause of the deformation of PCBA board. 1. Temperature of PCB board passing furnace Each circuit board will have...Read more -
What Is The Difference between Selective Wave Soldering and Ordinary Wave Soldering?
Wave soldering machine is the whole circuit board and tin-spraying surface contact depends on the surface tension of solder natural climb to complete welding. For high heat capacity and multilayer circuit board, wave soldering machine is difficult to achieve tin penetration requirements. Selectiv...Read more -
BGA Poor Welding Detection and Re-welding Problems
If the general X-ray machine virtual welding problem can not be checked out, can you use red ink and section to find the problem? But if heating or reflow oven welding, PCBA processing after the test and passed, then do red ink and slice test will be useful? If the customer asks to take the good ...Read more -
What Is Offline AOI Machine?
Introduction of Offline AOI Machine Offline AOI optical detection equipment is the general name of AOI after reflow oven and AOI after wave soldering machine. After SMD parts are mounted or soldered on the surface mount PCBA production line, the polarity test function of electrolytic capacitor ca...Read more -
Influence of Environment on Capacitor Performance
I. Ambient temperature 1. The high temperature The highest working environment temperature around the capacitor is very important for its application. The rise of temperature accelerates all chemical and electrochemical reactions, and the dielectric material is easy to age. The service life of th...Read more -
What Are The Characteristics of Wave Soldering Machine Process?
1. Wave Soldering Machine Technological process Dispensing → patch → curing → wave soldering 2. Process characteristics The size and filling of the solder joint depend on the design of the pad and the installation gap between the hole and the lead. The amount of heat applied to the PCB depends ma...Read more
