SMDJ85C

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Transient Voltage Suppressor (TVS) diodes are an innovative type of electronic component designed to protect other components or circuits from destructive transients such as overvoltage, overcurrent, and electrostatic discharge (ESD). The SMDJ85C is a commonly used TVS diode that provides a robust level of protection for a variety of applications. In this article, we will discuss the SMDJ85C application field and working principle.

Overview of SMDJ85C

The SMDJ85C is a unidirectional TVS diode. It offers peak power dissipation of 600w and a peak pulse current of 12,000A. It offers excellent clamping capability, protecting sensitive components from overvoltage and damaging transients generated by sources like inductive loads, switching circuits, signal lines, and power lines. The diode has a low capacitance of 6pF and a low clamping voltage of 8.3V, making it ideal for high-speed data lines subject to large transient overvoltages.

SMDJ85C Application Field

The SMDJ85C is a versatile diode that can be used for a variety of applications. It is often used on data and signal lines, primarily in computer systems, office automation, and telecommunications. It is also used for ESD and overvoltage protection of high-speed logic and sensitive integrated circuits. In addition, the diode is often used in automotive applications, including in engines, power control modules, and other safety systems.

The diode is also commonly used in military and aerospace applications, where it is often used to protect against a variety of voltage transients. Due to its low capacitance and clamping voltage, the SMDJ85C is also ideal for protecting I/O lines on FPGAs and CPLDs from damaging voltage transients.

SMDJ85C Working Principle

The SMDJ85C is a unidirectional diode, meaning that it only conducts when current flows in one direction. The diode is designed to divert damaging voltage transients away from sensitive components and safely dissipate them. It does this by clamping excess current and voltage to ground level, preventing the overvoltage from damaging other components.

When an overvoltage occurs, the diode rapidly turns on, allowing current to pass through it and diverting any excess voltage to ground level. The diode is designed to remain in the conductive state until the overvoltage dissipates. When the overvoltage dissipates, the diode turns off again and normal operation resumes.

Conclusion

The SMDJ85C is an excellent choice for protecting highly sensitive components from voltage transients. It has a low capacitance and a low clamping voltage, making it ideal for high-speed data lines. The diode is commonly used in a variety of applications, including computer systems, office automation, telecommunications, automotive systems, military and aerospace systems, and FPGAs and CPLDs. The SMDJ85C is a unidirectional diode that works by clamping excess current and voltage to ground level, protecting sensitive components from damage.

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