1.5SMC20A-E3/9AT

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TVS (Transient Voltage Suppressor) diodes, are semiconductor components that are designed to protect electronic components from overvoltage transients in automotive, industrial, and commercial applications. The 1.5SMC20A-E3/9AT is a TVS diode that is specified to operate in wide temperature range from -65°C to 175°C. This device is compliant with the RoHS standards and is qualified to AEC-Q101.

1. Application Field and Working Principle

The 1.5SMC20A-E3/9AT TVS diode is suitable for use in automotive, industrial, and commercial applications. This device is designed to protect electronic components from overvoltage transients, such as overvoltage from electrical line surges and when an electronic component is connected to a voltage higher than its rated maximum between connected nodes. The device works by clamping the voltage at its breakover voltage point. This aids in protecting the electronic components from damage from the overvoltage or spike.

The typical performance characteristics of the 1.5SMC20A-E3/9AT in a typical application are shown in the figure below:

The two distinct modes of the 1.5SMC20A-E3/9AT diode are a clamping mode and a non-clamping mode. In the clamping mode, the diode acts as a voltage-limiting device, clamping the voltage when it exceeds the breakdown voltage. In the non-clamping mode, the diode will remain non-conductive until the voltage exceeds its breakdown voltage. In this mode, the diode acts as a unidirectional non-clamping voltage device.

The 1.5SMC20A-E3/9AT features low anode capacitance and unidirectional ESD protection. It has excellent clamping capability and resistance to transient current. It is designed for applications ranging from low voltage to medium voltage. The device is capable of conducting current up to a maximum of 1.5A.

2. Setup

The 1.5SMC20A-E3/9AT can be set up in various ways depending on the application. Generally, the anode of the diode must be connected to the electrical line or node being protected, with the cathode of the diode connected to common ground. If the diode is used in an AC application, the common of the AC line must be connected to the cathode of the diode and the hot line should be connected to the anode. It is also important to note that the device must be placed properly near the component being protected in order to provide the desired protection.

3. Benefits

The 1.5SMC20A-E3/9AT TVS diode provides many benefits to its users. It offers excellent transient voltage surge protection, helping protect components from overvoltage transients in automotive, industrial, and commercial applications. Its extremely wide temperature range makes it suitable for operating in very harsh environments. The device is also compliant with RoHS standards and is qualified to AEC-Q101. In addition, the device is compact and low-profile, making it ideal for space-constrained applications.

4. Conclusion

The 1.5SMC20A-E3/9AT is a TVS diode that offers excellent performance in automotive, industrial, and commercial applications. The device works by clamping the voltage at its breakover voltage point, providing excellent transient voltage surge protection. The device is qualified to AEC-Q101 and RoHS compliant, making it suitable for harsh environments. The device is also low-profile, making it suitable for space-constrained applications. Overall, the 1.5SMC20A-E3/9AT is an excellent choice for protecting electronic components from overvoltage transients.

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