Chaosheng Group (Hong Kong) Technology Development Co., Ltd.
Shenzhen Chaosheng Electronic Technology Co.,Ltd
Zhejiang Kunyu Electronic Technology Co., Ltd.
Shenzhen Mingze Electronic Technology Co., Ltd.

Home
About Us
PCB Services
Equipment
PCB Capabilities
Quality Assurance
Contact Us
Request A Quote
Home News

How to improve the thermal reliability of PCB boards

PCB Certifications
Good quality PCB Board Service
Good quality PCB Board Service
Customer Reviews
Very nice service, price is competitive and reasonable, process capability is very strong, quality is relatively stable! Delivery is fast and on time, I like working with your company.

—— Jocelyn

very nice service,you guys offer very good quality product and quick response on quotes, I am very happy and satisfied. thanks for all your support.

—— Chelsea

you guys offer very good quality product and quick response on quotes, I am very happy and satisfied. thanks for all your support.

—— Carina

very nice service,price is competitive and reasonable,you guys offer very good quality product and quick response on quotes, I am very happy and satisfied. thanks for all your support.

—— Daphne

Very nice service, price is competitive and reasonable, you guys offer very good quality product and quick response on quotes, I am very happy and satisfied. thanks for all your support.

—— Ishara

Very nice service, price is competitive and reasonable, process capability is very strong, equipment is more advanced! The quality is relatively stable! Delivery is fast and on time, I like working with your company.

—— Ailsa

very nice service,price is competitive and reasonable,you guys offer very good quality product and quick response on quotes, I am very happy and satisfied. thanks for all your support.

—— Kelly

Very nice service, price is competitive and reasonable, delivery is fast and on time, I like working with your company.

—— Abbott

Your service is very good, the price competition is reasonable, and the craft ability is good! stable quality! Delivery is fast and on time, I like to work with your company for a long time.

—— Chapman

Very good service, competitive price, reasonable price, advanced PCB, FPC and PCBA process capabilities, and equipment is great! The quality is relatively stable! I like to cooperate with your company for fast and punctual delivery.

—— Cyril Demaria

I'm Online Chat Now
Company News
How to improve the thermal reliability of PCB boards
How to improve the thermal reliability of PCB boards

In many applications, weight and physical size are very important. If the actual power consumption of the component is small, the safety factor of the design may be too high, so that the design of the board is based on the actual or inconsistent component power consumption value. Perform a thermal analysis.
In general, the distribution of copper foil on the PCB board is very complicated and difficult to accurately model. Therefore, the shape of the wiring needs to be simplified during modeling, and the electronic components on the ANSYS model circuit board that are close to the actual circuit board can be simulated by simplified modeling, such as MOS tubes and integrated circuit blocks.
Thermal analysis
Thermal analysis in placement processing assists the designer in determining the electrical performance of the components on the PCB board and helps the designer determine if the component or board will burn out due to high temperatures. A simple thermal analysis simply calculates the average temperature of the board, and a complex one creates a transient model of an electronic device with multiple boards. The accuracy of the thermal analysis ultimately depends on the accuracy of the component's power consumption provided by the board designer.
In many applications, weight and physical size are very important. If the actual power consumption of the component is small, the safety factor of the design may be too high, so that the design of the board is based on the actual or inconsistent component power consumption value. Perform a thermal analysis. The opposite (and more serious) is that the thermal safety factor is designed too low, that is, the actual operating temperature of the component is higher than that predicted by the analyst. Such problems are generally solved by adding a heat sink or a fan to the board. Cool down to solve. These external accessories add cost and extend manufacturing time. Adding a fan to the design can also cause instability in reliability. Therefore, the circuit board mainly uses active rather than passive cooling (such as natural convection, conduction and radiation). Cooling).
Simplified modeling of circuit boards
Before modeling, analyze the main heating devices in the circuit board, such as MOS tubes and integrated circuit blocks. These components convert most of the power loss into heat during operation. Therefore, these devices need to be considered primarily in modeling.
In addition, copper foil coated as a wire on the board substrate is also considered. They not only play the role of electricity in the design, but also play the role of conducting heat. The thermal conductivity and heat transfer area are relatively large. The circuit board is an indispensable component of the electronic circuit. Its structure is composed of epoxy substrate. And consists of a copper foil coated as a wire. The thickness of the epoxy resin substrate was 4 mm, and the thickness of the copper foil was 0.1 mm. The thermal conductivity of copper is 400 W/(m ° C), while the thermal conductivity of epoxy resin is only 0.276 W/(m ° C). Although the added copper foil is very thin and thin, it has a strong guiding effect on heat, so it cannot be ignored in modeling.

 

Pub Time : 2008-06-01 12:06:28 >> News list
Contact Details
Shenzhen Chaosheng Electronic Technology Co.,Ltd

Contact Person: Mr. Mank.Li

Tel: 13528819118

Fax: 86-852-69483488

Send your inquiry directly to us (0 / 3000)