SMBJ30A

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SMBJ30A

SMBJ30A is a Transient Voltage Suppression (TVS) diode utilized in many industrial, consumer, aviation, and military applications. Developed by major semiconductor manufacturer ON Semiconductor, the SMBJ30A is based on a PN junction design that offers superior protection from high voltage and current transients.

Features and Specifications

The SMBJ30A has a wide current range with a maximum peak pulse power rating of 600 W. It is capable of handling reverse energy up to 30 W when installed in a circuit. The power dissipation is 6 W, and the operating temperature range is between -55 C and +150 C. The SMBJ30A has a forward and reverse breakdown voltage of 30 V and 5.5 V respectively. It meets the MSL Level 2 moisture sensitivity level and is integrated with a reverse-bias voltage standoff protection. The SMBJ30A also has a low capacitance rating of 0.68pF.

Applications

The SMBJ30A is a versatile and reliable TVS diode that is ideal for use in many industries requiring surge protection. Common applications include power supply and signal conditioning circuits in automotive and industrial equipment, data and communication systems, medical devices, portable electronics, and more. The SMBJ30A is also often used to protect military and aviation systems against voltage and current surges.

Working Principle

The SMBJ30A consists of a PN junction semiconductor diode, which serves as a voltage-controlled switch. The two PN junctions that form the diode act as a capacitor to store voltage and current. When a voltage pulse is applied to the device, the junctions move electrons within the diode, creating a voltage gradient in the diode. This causes a current to flow in a direction that allows for the charge to be balanced. At the same time, the junctions permit electrons to flow in a one-directional circuit, allowing the voltage surge to be suppressed.

The SMBJ30A is extremely useful in protecting sensitive electrical and electronic systems from voltage transients. Its low capacitance characteristics and quick response time make it one of the most reliable TVS diodes on the market.

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