What should PCBA do when it encounters bad welding parts?
The welding methods of PCBA: (1) split welding method: (2) centralized welding method: (3) residual welding method: (4) shear welding method
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The basic principles and requirements of PCB diagram design
The design of PCB starts from determining the size of the board. The size of PCB is limited by the size of the case shell, so that it can be placed into the shell exactly. Secondly, the connection mode of PCB and external components should be considered.
The six-layer PCB design is in line with EMC design
Solutions to impedance discontinuity problems in PCB design: 1. Gradient line, 2. Corner, 3. Large pad, 4. Through hole, 5. Through hole coaxial connector
What are the precautions for PCB proofing?
The closed physical border is a basic platform for future component layout and wiring, and also a constraint on automatic layout. Corner place best use arc, on the one hand can avoid sharp Angle scratch workers, but also can reduce the stress effect.
The basic principles and requirements of PCB board drawing design
As an electronic engineer design circuit is a necessary hard work, if the PCB design is not reasonable performance will be greatly compromised.
What is the meaning of window opening in PCB design?
Four difficulties in the production and processing of multilayer circuit board: 1, the inner line production difficulties, 2, the inner layer between the point of difficulty, 3, pressing process difficulties, 4, drilling production difficulties
Design specification for Mark points in PCB design
SMT patch BOM list arrangement Note: 3. The description must be clear. 4. There are some crucial electronic components. Considering the fluctuations of the component market and the cost, 5. 6. Coordinate values required by coordinate T/B to distinguish po
PCB design wire and pad with white ring solution
There are three PCB design methods that can withstand 100A current：1: PCB wiring, 2: terminals, 3: custom copper bar, 4: special process
Why PCBA small batch proofing will charge additional engineering fees?
Small batch PCB proofing charge is high, mainly in SMT SMT processing, whether large batch SMT processing, small batch SMT processing, need to do the preliminary work is the same
What is the meaning of through hole plug oil in PCB process?
Through the hole plug oil is to guide through the hole with ink inside the plug hole production, the emphasis is on the quality and tightness of the plug hole. Through the hole plug oil treatment inspection standard is or light, above must have ink cover,
Can PCB design high speed signal layout be routed at 90°?
It is strongly required in various PCB design guidelines that high frequency and high speed signal transmission lines need to maintain consistent characteristic impedance, and that 90° Angle routing at the corner of the transmission line will change the l
How to solve the problem of short circuit in PCBA processing quickly
Quick solution to PCBA short-circuit problem: 1. Use short-circuit positioning analyzer for inspection, 2. Light up the short-circuit network on the PCB diagram. 3. In case of the same short-circuit in batches, take a board to operate the secant line and
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