SMBJ120A-M3/5B

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TVS diodes are purpose-built devices designed to protect sensitive electronic components from overvoltage transients generated by Electrostatic Discharge (ESD), Electromagnetic Interference (EMI) and other electrical fast transients (EFT). SMBJ120A-M3/5B is a bidirectional Transient Voltage Suppression (TVS) diode designed for use in high-performance Automotive, Telecom, and Industrial applications. It is intended to protect voltage sensitive components from damaging transients due to Electrostatic Discharge (ESD), inductive switching or other transient voltage events on one or both power and/or data lines.

SMBJ120A-M3/5B is a unidirectional diode that acts as a voltage protection device when the device voltage exceeds its breakdown voltage. When this happens, it conducts current and limits the voltage to a safe level. The device features ESD protection of up to 40kV, low leakage, fast response time, and a wide operating temperature range of -55°C to +125°C. The SMBJ120A-M3/5B is available in an SMB package, which is suitable for both reflow soldering and wave soldering.

SMBJ120A-M3/5B has a number of potential application fields, especially in the automotive industry. It can be used in automotive power converters, system power supply units, power amplification modules, and high-frequency circuits. It is also suitable for protection against electrostatic discharge (ESD) pulse and other pulse circuits in turnkey IGBT modules, dielectric capacitors, and power supplies. SMBJ120A-M3/5B can also be used in DC/DC converters and automotive LED backlight modules.

The working principle of SMBJ120A-M3/5B is simple. When the voltage across the device exceeds its breakdown voltage, it will conduct current and provides voltage protection. This prevents the component from being damaged by the overvoltage. It has a low on-state resistance and fast switching time, allowing it to respond quickly to transient voltages. The device also has a low reverse leakage when the voltage is below the breakdown voltage, which prevents current from flowing through the device and damaging the component.

In conclusion, SMBJ120A-M3/5B is a high-performance bidirectional TVS diode designed to protect voltage sensitive components from overvoltage transients. It can be used in a wide range of applications in the automotive, telecom, and industrial sectors. The device features ESD protection of up to 40kV, low leakage, fast response time, and a wide operating temperature range of -55°C to +125°C. The working principle of SMBJ120A-M3/5B is that it conducts current and limits the voltage to a safe level once the voltage across the device exceeds its breakdown voltage.

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