SMBJ90CA-E3/5B

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TVS-Diodes: SMBJ90CA-E3/5B Application Field and Working Principle

TVS-Diodes are widely used in consumer electronic products, electro-mechanical equipment, and automotive applications. And SMBJ90CA-E3/5B is a particular television protection diode in TVS diode family. It features very low leakage current, high surge capability, and fast response time, making it ideal for high-frequency applications.

Application Fields

SMBJ90CA-E3/5B is often seen in many circuit designs, especially where a transient voltage protection is needed. And there are three major types of application scenarios:

• Automotive applications: The diodes in this package easily can provide line protection from voltage surges in vehicles.
• Consumer electronics: The diodes are also found in consumer electronics like CD/DVD players, portable gaming device, and cameras.
• Equipment control: SMBJ90CA-E3/5B are widely used in the gate control for power modules, EMI filters, and some low-voltage power supply circuit.

Working Principle

SMBJ90CA-E3/5B is a unidirectional, PN junction, in which the forward bias is a structure that has two Zener models in series and a single diode. This structure offers fast response to high speed transients. When a high-frequency voltage occurs, it will trigger the dual Zener diodes, generating a low voltage that activates a single diode, allowing current to flow. This is to dissipate huge energy during the voltage surge in a very short time.

Moreover, SMBJ90CA-E3/5B is able to withstand high-speed pulses on the order of milliseconds with the help of its high-speed silicon chip. This chip also has extremely low circuit distortion, and will not affect other secondary circuits when it is activated.

Advantages

• Due to its small capacitance performance, SMBJ90CA-E3/5B has good noise suppression ability and reduced voltage requirements.
• The TVS is designed to provide ESD protection for I/O ports and cable.
• It comes with low operating and clamping voltage, ideal for cost-sensitive applications.
• The diode has reverse breakdown voltage from 5.0V to 12V.
• It is constructed with chip style and has a flat surface.
• The TVS has tight parameters so that only a few components are needed.

Conclusion

In conclusion, SMBJ90CA-E3/5B is a wide-applied diode found in various types of circuit designs. It is designed to have low leakage current, high surge capability, and fast response time. With the advantage of a chip style and tight parameters, the durability and reliability make it ideal for consumer electronic products, electro-mechanical equipment, and automotive applications.

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