关于我们
Check category
/
/
/
PCB circuit board proofing and cutting size

PCB circuit board proofing and cutting size

  • Categories:Industry News
  • Author:
  • Origin:
  • Time of issue:2020-09-22 16:46
  • Views:

PCB circuit board proofing and cutting size

Information

■PCB circuit board proofing and cutting size

  ①Maximum panel size: 530 * 622mm (spray tin plate: 450 * 622mm / MAX. It depends on the equipment capacity)

  ②Pay attention to the problem of the latitude and longitude of the board with more than six layers (must be the same), which can easily cause poor compression.

  ③The size of the reserved surface of the multilayer board (8-10 layers of four-layer boards 10-15 over six layers mm)

  ④Commonly used boards containing copper core (0.2-3.2mm under 0.1mm radian), common boards without copper core (** radian of 0.05-1.75mm)


  Inner/outer layer

  PCB circuit board proofing is positive

  ①0.03mm (Hoz) compensation, copper thickness increased by 1oz, compensation increased by 0.025mm

  ②The width of the welding ring requires Hoz 0.15mm pth 0.18 (limit 0.13 0.16)

                 1 ounce (0.17 mm depth 0.20) (limit 0.15 0.18)

                 2 ounces (0.19 mm depth 0.22) (limit 0.17 0.20)

  The copper thickness is increased by 1 ounce, and the compensation is increased by 0.02 mm

  ③Cutting the copper wire: ensure the minimum wire distance: 0.4mm to 0.15mm from the copper wire (0.3mm from the PAD and the wire)

          Copper hole: 0.250mm line: 0.15mm pad: 0.2mm four-layer board

          Copper hole: 0.250mm line: 0.18mm pad: 0.2mm above the six-layer board

          The copper wires generated during the copper extraction process must be removed, and the small holes in the copper skin must also be filled.

   For ringless pth and NPth holes, 0.2mm copper should be cut on one side. If the distance cannot be ensured, drill twice.

Keyword:

The evaluation system of the circuit board factory should follow the following principles

The evaluation system of the circuit board factory should follow the following principles

Establishing a good cooperative relationship with circuit board factories is conducive to cost reduction, response time reduction and the creation of new market value, etc. The core issue is how to choose the ideal circuit board factory. There are many factors involved in the evaluation of circuit board factories, and the evaluation index systems are diverse, both qualitative and quantitative, and the index weights are also different. Therefore, it is necessary to establish a universal and expandable evaluation index system for circuit board factories. , And the indicator system should follow the following principles:
The use of soft and hard circuit boards?

The use of soft and hard circuit boards?

In our daily life, circuit boards are mostly single-sided, double-sided, or multi-layer boards, rigid boards, metal-based circuit boards, aluminum, copper substrates, thermally conductive fiberboards, etc., do you know what a flexible and rigid circuit board is? Rigid-flex circuit board: refers to a special circuit board made by pressing a rigid circuit board (PCB) and a flexible circuit board (FPC). The main board materials used are rigid board FR4 and flexible board polyimide (PI). Rigid and flexible circuit boards combine the rigid characteristics of rigid circuit boards and the advantages of flexible circuit
Soft and hard circuit board production process

Soft and hard circuit board production process

The flexible and hard circuit board is the flexible circuit board and the rigid circuit board. After pressing and other processes, they are combined according to the relevant process requirements to form a circuit board with FPC characteristics and PCB characteristics. In the past, two hard boards were connected by using soft boards and connectors to connect each other. In order to improve the reliability of the connection between the rigid board and the flexible board, the flexible board is directly fabricated between two rigid boards in the printed circuit board (PCB) factory, which can avoid the subsequent connection process, whether it is a rigid board manufacturer or FPC manufacturers are now able to supply rigid-flex boards. Under the demand for light and thin end products, the

National Service Hotline:

86-755-29615096

Fax:86-755-27691537

Mail:csaa@hengkepcb.com

URL:www.hengkepcb.com

Address:No.253, Nanpu Road, Shajing Street, Baoan District, Shenzhen City, Guangdong Province

Copyright: Shenzhen Hengkesheng Electronics Co., Ltd.    备案号:粤ICP备08029233号

Powered by www.300.cn