Product Categories
Contact Us

Dongguan DaCheung Electronics Co., Ltd.
Mobile: 13556626128
Contact Person: Mr. Liang (Kenleung)
Phone: 0769-86362388
Online customer service qq:1447962723
URL: www.dacheung.cn
Add: New industrial Zone, Xinfeng Road, Shijie Town, Dongguan City, Guangdong Province
Business, technology, after-sales service contact: Mr. Liang (Kenleung)
URL: http://www.dacheung.cn
E-mail: 1447962723@qq.com

Small Household Electrical Appliances Control Board design should pay attention to the following related matters
2018-03-04

Small Household Electrical Appliances Control BoardDesign should pay attention to the following related matters:

 

1, the design encounters the connection of the solder disk is thinner, to beSmall Household Electrical Appliances Control BoardThe connection between the pad and the line is designed to form a water droplet, so that the pad is not easy to start the skin, the line and

The pad is not easy to disconnect. Avoid arranging important signal lines, such as clocks and reset signals, on the edge of PCB.

2, chassis ground and signal line spacing at least 4 mm;Small Household Electrical Appliances Control BoardThe aspect ratio of the chassis ground is less than 5:1 to reduce the inductance effect.

3, the devices and lines that have been identified are locked with the lock function, so that they are not mistakenly moved.

4, the minimum width of the wire should not be less than 0.2mm (8mil), in high-density high-precision printed circuit, wire width and spacing generally desirable 12mil, large area deposited copper set

The timing copper should be open window, plus the cooling hole, and will open the window design into a mesh. Shorten the connection between high-frequency components as much as possible, reduce their distribution parameters and mutual

Electromagnetic interference between. Vulnerable components can not be too close to each other, input and output components should be as far as possible.

5, in DIP package IC foot line, can apply 10-10 and 12-12 principle, namely when two feet through 2 lines, the pad diameter can be set to 50mil, line width and line spacing are

10mil, when the two feet through only 1 lines, pad diameter can be set to 64mil, line width and line distance are 12mil.

6, when the pad diameter of 1.5mm, in order to increase the strength of the pad, can be used long not less than 1.5mm, wide for 1.5mm and long round pad.

 

Small Household Electrical Appliances Control BoardFactory production of the thermal substrate in high-power LED cooling channel, the thermal substrate is connected to the internal and external heat transfer key links, at least the following three major functions:

①led chip thermal clearance;

The electrical connection of the ②lde chip;

③led chip physical support, most of the various structural led packaging can not be separated from the thermal substrate,Small Household Electrical Appliances Control BoardThe heat dissipation substrate produced by the plant becomes the heavy lde package.

To make up one of the ingredients.


Related Industry Knowledge