SMF130AT1

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS – Diodes are an essential component which helps protect the integrity of a circuit from lightning strikes, AC transients, and more. SMF130AT1 is one type of TVS-Diodes which are widely used in the market. This article will discuss the application field and working principle of the SMF130AT1 to help you better understand how these diodes are used.

The SMF130AT1 is designed to provide protection against electrostatic discharges (ESD) up to ±30kV contact and ±30kV air discharge according to IEC 61131-2. It is widely used in high-performance protection applications, which require advanced ESD protection as well as fast response time. These applications include automotive audio and video equipment, cellular phones, STB/TV sets, and PDAs.

The SMF130AT1 is manufactured with very small package size profiles: sot-343 and sot-23 with a current rating of 0.5 amperes and a reverse stand-off voltage of 13volts. The SMF130AT1 utilizes a Zenerbased structure which provides a low capacitance level of 2.7 pf typical. The built-in self-protection feature disables the ESD protection after each ESD strike. After an ESD strike, the protection capability will automatically recovery back to normal.

The working principle of the SMF130AT1 is based on a Zener-based ESD protection design. In normal operation, the device behaves like a standard diode with a forward voltage drop of about 0.7V. During an ESD event, the voltage across the device increases to the ESD threshold voltage, causing the diode to avalanche. This subsequently triggers the mechanism for ESD protection. The Zener diode structure absorbs the subsequent ESD current. This in turn prevents current flow in the opposite direction.

After the ESD event, the device recovers from its protection state back to its standard operation. This is known as self-protection and enables the device to continue providing ESD protection after each ESD event. The SMF130AT1 employs an advanced circuit construction of field plate and electroplate to enhance the anti-ESD protective ability.

Overall, the SMF130AT1 is designed to provide efficient ESD protection for applications such as automotive audio and video equipment, cellular phones, STB/TV sets, and PDAs. The device reaches very low capacitance levels of 2.7 pf due to its Zener-based structure. Its small package size profiles also make it an attractive choice for many applications. Moreover, the SMF130AT1 features a self-protection mechanism which automatically recovers the device after each ESD event, thus allowing it to continue providing full protection.

The specific data is subject to PDF, and the above content is for reference