SMBJ90CE3/TR13 Circuit Protection

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SMBJ90CE3/TR13 as a bi-directional electrostatic discharge TVS diode, works with an avalanche breakdown working principle. TVS diodes are actively used in many practical applications due to their capability of providing fast voltage spike and a low clamping voltage while consuming minimal parasitic capacitance and less power in the circuit. This character of TVS diodes makes it an ideal choice in fields such as power systems, avionics, automotive, and consumer electronics.

The SMBJ90CE3/TR13 is a low-capacitance diode that features fast response times, good clamping characteristics, and tight voltage regulation in an ultra-small package. This unique combination helps to reduce the risk of permanent circuit damage due to overvoltage transients. This diode is used in both consumer and industrial equipment that is subject to high electrostatic discharge fields.

In general, TVS diodes are used to protect electronic components from transients and overvoltages. They act as a safety barrier between the power supply and the circuit, shunting transient and overvoltage away from the components. This prevents the circuit from suffering from high voltage that could be damaging to the components. SMBJ90CE3/TR13 is designed to shun large surge voltages up to 100 volts without damaging the device and is especially designed for over-voltage protection.

The working principle of a TVS diode is based on an avalanche breakdown. When the voltage across the diode exceeds a certain Reverse Stand-Off Voltage (VBR) and forward current reaches a certain level, then electrons and holes in the junction region gain sufficient energy to break the covalent bonds in the lattice structure and collide with other electron and holes. Chemical bonds were broken which releases a lot of energy in form of lattice vibration, and finally forms an avalanche breakdown. The energy of the avalanche breakdown then dissipates with the help of the diode\'s internal resistance, preventing electrical breakdowns and overvoltages.

The SMBJ90CE3/TR13 is one of the most commonly used TVS diodes in the market. Its wide working voltage range(6V to 100V) and low clamping voltage (13V @ 18A or 16.1V @ 30A) make it a suitable device for a variety of applications including over-voltage protection and energy management in industrial, automotive, consumer and avionics systems. The tightly-controlled voltage regulation of the SMBJ90CE3/TR13 helps to ensure maximum protection for the device and the connected system components.

In conclusion, the SMBJ90CE3/TR13 as a member of TVS diodes, is used in various types of applications and industries where overvoltage and transient protection is required. Its unique features like fast response times, low clamping voltage and tight voltage regulation make it a suitable choice for those applications. Its working principle is based on an avalanche breakdown which helps it to dissipate transient surge energies without overvoltage breakdowns, thereby protecting the system from undesirable high voltage levels.

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