SMB10J20CAHM4G

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TVS (Transient Voltage Suppressors) diodes are semiconductor components offering protection against high-voltage transients. The SMB10J20CAHM4G is a unidirectional TVS diode. The device provides a low capacitance of 10 pF with a breakdown voltage rating of 20 V. It is suitable for a range of voltage-sensitive applications thanks to its fast response, low leakage current, and various sizes. This article will discuss the application fields and working principle of the SMB10J20CAHM4G.

General Overview

The SMB10J20CAHM4G is a unidirectional TVS diode based on silicon avalanche technology. It is designed to provide a fast response time at the rated voltage, preventing damage to sensitive equipment due to power surges or electrostatic discharges. Its capacitance is 10 pF and its surge resistance is 10 Ω. It is highly reliable and has a lifetime assurance of 100 kV minimum.

Application Fields

The SMB10J20CAHM4G is a versatile device with features that make it suitable for various applications. Its fast response time and high surge current ratings make it suitable for ESD protection of electronic devices. It is also ideal for high-voltage protection against overvoltage spikes, surges, or power cross, and it can be used in applications such as telecom systems, automotive-electronic systems, consumer appliances, military equipment, and industrial control systems. Additionally, the SMB10J20CAHM4G is also used as a voltage clamp in power supplies and other high-impedance circuits.

Working Principle

The SMB10J20CAHM4G is a unidirectional device that operates by opposing the flow of an excessive current. It consists of an exposed cathode and an anode that is connected to the ground. When the voltage across the diode exceeds the breakdown voltage rating, the device will begin to conduct an avalanche current. This current is significantly greater than the source current, thus allowing the diode to function as a voltage clamp. When the voltage returns to its normal level, the diode will return to its non-conductive state. The device features a low On-state resistance, ensuring that the transient voltage drop remains low.

Conclusion

The SMB10J20CAHM4G is a unidirectional TVS diode designed for fast response and high surge current ratings. It is suitable for a range of applications including surge-service power supplies, telecom and automotive-electronic systems, consumer appliances, and military equipment. The device works by providing an avalanche current that is significantly greater than the source current, allowing it to operate as a voltage clamp. This makes it an ideal solution for protecting sensitive electronics against overvoltage spikes or electrostatic discharges.

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