source:Industry News release time:2022-07-27 Article author:yu Popular:pcb
With the development of the electronics industry, the development of PCB circuit boards is promoted, and higher requirements are also placed on the production process and surface mount technology of printed circuit boards. The plug hole process came into being. The plug hole of the PCB circuit board is generally after the solder mask layer, and then the second layer of ink is used to fill the heat dissipation hole with a diameter of less than 0.55mm. Why do PCB circuit boards need to plug holes?
1. Prevent the surface solder paste from flowing into the hole to cause virtual soldering and affect the mounting.
2. The plug hole of the PCB circuit board can avoid the flux residue in the via hole, and can maintain the surface flatness;
3. When there are vias on the BGA pad, plug holes must be made first, and then gold-plated to facilitate BGA soldering;
4. The plug hole process can prevent the tin from penetrating through the guide hole and cause a short circuit when the PCB circuit board is over-wave soldering, and prevent the tin bead from popping out during the over-wave soldering process, resulting in a short circuit of the PCB circuit board;
The PCB circuit board plugging process can be described as various, the process flow is particularly long, and the process is difficult to control. At present, the common plugging processes include resin plugging and electroplating filling. The resin plugging is by plating copper on the wall of the via hole and then filling it with epoxy resin. Finally, copper is plated on the surface of the resin. The effect is that the hole can be turned on. And there are no dents on the surface, which does not affect the welding. Electroplating fills the vias directly by electroplating, without voids, which is good for welding, but requires high process capabilities.
Read recommendations:
Laminate copper-based PCB after 4L (sample)
Six-layer Immersion Gold Board (BGA)
How to design different spacings in circuit boards.Oscillator PCB
Popular recommended products
Six-layer Immersion Gold Board (BGA)
2021-05-27Silver oil perforated plate (double-sided)
2021-04-27Laminate copper-based PCB after 4L (sample)
2021-04-27High frequency PCB
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-05-27High frequency PCB
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-04-27Display board (six layers)
2021-04-27Single copper base PCB
2021-04-27High frequency PCB
2021-04-27Computer card board (four layers)
2021-04-25Six-layer Immersion Gold Board (BGA)
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-27Mobile phone template (six layers)
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-04-27High frequency PCB
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-05-24Network communication board (sixth floor)
2021-04-29Six-layer Immersion Gold Board (BGA)
2021-05-27Aluminum substrate (double-sided)
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-05-24Six-layer Immersion Gold Board (BGA)
2021-04-27Single-sided double-layer AL base PCB
2021-04-27Mobile phone board
2021-04-27Six-layer Immersion Gold Board (BGA)
2021-04-26Six-layer Immersion Gold Board (BGA)
2021-04-26Six-layer Immersion Gold Board (BGA)
2021-04-26SMT stickers
2021-05-27SMT stickers
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-26Mobile phone board
2021-05-27DIP plugin
2021-05-27DIP plugin
2021-05-27Six-layer Immersion Gold Board (BGA)
2021-04-26Related Information
The relationship between PCB safety distance and voltage
2024-04-22SMT surface mount processing.Hybrid circuit board PCB
2024-04-15PCB enterprises should pay attention to SMT matters.Electronic components PCB
2024-04-03PCB - the core building block of electronic products.Automotive Electronics PCB
2024-03-25PCB - the bridge and link of the electronic world
2024-03-18How to define high-frequency and high-precision circuit boards.Industrial Electronics PCB
2024-03-11USB PCB interface layout and wiring requirements
2024-01-22Electrolytic capacitor PCB.Steps for using PCB pins
2024-01-15Automotive ElectronicWhat aspects should be considered when processing and manufacturing PCB boards?
2024-01-08Electrolytic capaciWhat is the difference between a gold-plated circuit board and a gold-plated one?
2023-12-25When grinding PCB boards, attention should be paid to.Oscillator (belonging to crystal) PCB
2023-12-18Industrial Electronics PCB!What precautions should be taken when copying and grinding PCB boards
2023-12-11Do you know who is more suitable for LED direct display, regarding the difference between PCB board
2023-12-05Aluminum electrolytic capacitor PCB.What are the standards for selecting PCB boards
2023-11-27Surface Mount Technology (SMT) Phase PCB
2023-11-20Oscillator (belonging to crystal) PCB.The main functions of PCB board
2023-11-13What is the difference between RO filter and PCB filter
2023-11-06Method for determining blind hole PCB board
2023-11-01Electronic Manufacturing Services PCB!What are the effects of PCB board color on performance?
2023-10-23Introduction to the Manufacturing Steps and Requirements of PCBA Test Stand
2023-10-16PCB version maturity stage.AOI circuit board price
2023-09-25How to maintain a PCB circuit board
2023-09-19Development Trend of Printed Circuit Board.Zener diode PCB Vendor
2023-09-14Common problems and cause analysis of PCB circuit board sampling.Zener diode PCB price
2023-09-08What are the issues that need to be understood in PCB circuit board design?IGBT module PCB factory
2023-09-08How to reduce the risk of bending and deformation in PCB circuit board production?Inverter PCB Produ
2023-08-16What are the three main factors that constitute welding defects in PCB circuit boards?Multilayer PCB
2023-08-16The structure of a glass teapot.LCD Module PCB factory
2023-08-11Glass teapot.Inverter PCB Processing
2023-08-11PCB online debugging
2023-08-08