Double sided pcb

Views: 0     Author: Site Editor     Publish Time: 2023-12-19      Origin: Site


facebook sharing button
twitter sharing button
line sharing button
wechat sharing button
linkedin sharing button
pinterest sharing button
whatsapp sharing button
sharethis sharing button


What is double sided pcb?

A Double-Sided Printed Circuit Board (Double Sided PCB) is a circuit board that has conductive lines, component welds, and other circuit structures on both sides. Unlike single-sided circuit boards only have a circuit structure on one side, while double layer pcb can achieve a more complex circuit structure and higher component density, so they are widely used in many electronic devices.

Manufacturing process

What is the process of 2 layer circuit board?

Order release→Gerber review→MI making→Material cutting→Drilling→Copper plating→Brush grinding→Circuit→Copper tin plating→Film removal/etching→Tin removal→Solder resistance→Surface treatment→Routing→Testing→Finish inspection→finished product warehouse.

1. MI cutting: According to the customer's manufacturing instructions, large boards are edged and cut into suitable small sheets.

2. Drilling: Drilling conductive holes or plug-in holes on the board according to the computer drilling program.

3. Copper plating: A thin layer of chemical copper is deposited in the drilled hole, the purpose is to chemically deposit a layer of copper on the non-conductive epoxy glass cloth substrate (or other substrate) to facilitate the formation of a circuit after electroplating.

4. Full plate copper plating: mainly for thickening protection of the thin layer of chemical copper to prevent its oxidation in the air, forming holes without copper or holes.

5. Circuit (graphics transfer) : Paste a dry film on the board or screen printing on the graphics anti-plating ink, after exposure, development, to make the circuit graphics.

6. Graphic plating: Circuit thickening copper plating is carried out on the board that has done the graphic line, so that the copper thickness in the hole and the circuit reaches a certain thickness, and a certain current can be loaded.

7. Etching: Removing graphic ink or dry film to etch off excess copper foil to obtain conductive circuit pattern.

8. Tin removal: The tin layer on the formed pattern is removed to expose the desired circuit.

9. Screen printing solder resistance ink or solder resistance dry film: a layer of solder resistance ink is printed on the board, or a layer of solder resistance dry film is exposed and developed to make solder resistance graphics, the main purpose is to prevent short circuit between circuits during welding.

10. Immersion gold/LF HASL: Deposit gold or spray a layer of tin on the plate where welding is required to facilitate welding and prevent oxidation of the copper surface there.

11. Silkscreen: Some iconic characters are printed on the board, mainly to facilitate customers to install components.

12. Routing: The shape of the board is machined according to customer requirements.

13. Electrical test: Detect whether there is an open short circuit in the PCB by closing the circuit.

14.FQC/ packaging: inspection board shipment, quality qualified circuit board arrangement to customer delivery.

The above is a complete set of two layer pcb board production process, although the circuit board is divided into single-sided PCB board, 2 layer pcb board and multi-layer pcb board because the number of layers is different (mainly 4-layer pcb board, 6-layer pcb board and 8-layer pcb board), but the production process is still much the same.

B206, Xihuan Road, Shajing, Baoan district, Shenzhen


SEEKPCB is specializing in electronics one stop solution, including PCB design, PCB manufacturing, PCB Assembly, Component sourcing. Quick turn PCB prototype, express PCB assembly are our strengths to fullfil fast time-to-market and your vitory.

Quick Links

Leave a Message
Contact Us

Product Category

Subsribe Now

Sign up for our newsletter to receive the latest news.
Copyright 2023 Seek technology Co., Ltd . Sitemap.