SMBJ36A-M3/5B

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TVS - Diodes, also known as Transient Voltage Suppression Diodes, are important components used to protect sensitive electronic devices against large voltage pulses resulting from power surges, electrical noise, or lightning strikes. The SMBJ36A-M3/5B is one such diode, designed to protect a wide range of applications. In this article, we\'ll look at the application field and working principle of the SMBJ36A-M3/5B.

The SMBJ36A-M3/5B devices are unidirectional, meaning they are designed to block voltage from flowing in one direction only. They are available in different voltage ratings, such as 36V to 50V, to protect a device from over-voltage events up to these levels. The device also has a very low maximum capacitance of 1.2pF between its terminals, making it suitable for high speed applications with high dv/dt values.

The SMBJ36A-M3/5B can be used in a wide range of applications, from basic ESD protection (electrostatic discharge) to protecting sensitive electronic components from high-voltage pulses. This includes consumer electronics, telecom equipment, computer peripherals, automotive electronics, and industrial control systems.

The SMBJ36A-M3/5B is suitable for both series mode and parallel mode applications. In series mode, the TVS diode is placed in series with the load, and the breakdown voltage of the diode determines the maximum level of protection the device can provide. In parallel mode, the device is placed in parallel with the load, and it\'s designed to provide protection against transients of any magnitude.

In terms of working principle, the SMBJ36A-M3/5B has a breakdown voltage rating, which is the minimum voltage at which the device will conduct current in the opposite direction. When connected in series with the load, the SMBJ36A-M3/5B will block current flow until the voltage across its terminal reaches the device\'s breakdown voltage. Once this occurs, the device begins to conduct current, equalizing the voltage across its terminals.

In the event of an over-voltage event, the SMBJ36A-M3/5B will conduct current in the reverse direction, limiting the maximum voltage applied to the load. This is known as the clamping voltage, and it typically ranges from 5V to 40V, depending on the device\'s breakdown voltage. The SMBJ36A-M3/5B is also designed to dissipate large amounts of energy quickly, limiting the duration of the over-voltage event.

Overall, the SMBJ36A-M3/5B is a versatile device, ideal for use in a wide variety of electronics applications. Its fast switching capabilities and low capacitance enable it to provide protection against large transients and high dv/dt values, making it a great choice for consumer electronics, industrial control systems, automotive electronics, and telecom equipment.

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