SMCJ85A R7G

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TVS (Transient Voltage Suppressor) diodes are designed to protect vulnerable components from overvoltages caused by electrostatic discharge (ESD) and other transient voltage events. The SMCJ85A series (R7G variant) is a popular choice for applications requiring high pulse power handling capability, along with a guaranteed peak power dissipation of 7 kW.

The SMCJ85A R7G is available in both Unidirectional (SMCJ85A-E3/54) and Bidirectional (SMCJ85A-G3/54) configurations. It is packaged in a RoHS compliant SMAF package, with a maximum drain-source voltage of 600V, a power dissipation rating of 350V, and a clamping voltage of 715V.

The SMCJ85A R7G features a fast response time, making it ideal for applications requiring low capacitance and high pulse power handling capability. Its self-monitored construction is designed to provide superior ESD protection and protection from a broad range of transient voltages. The SMCJ85A R7G also features reverse bias safe operating area (RBSA) protection, which ensures the device is protected if the reverse bias voltage exceeds the maximum ratings.

The working principle of the SMCJ85A R7G is relatively simple. When a high voltage transient spike occurs, the voltage across its two terminals rises. This causes a current to flow and the TVS diode begins to conduct. It then absorbs the energy from the transient spike and limits the rise of voltage across itself, thereby limiting the current that flows through the circuit to a safe level.

Moreover, the SMCJ85A R7G is designed to perform its voltage protection function even when reverse biased. Its unique construction helps to ensure that the current flowing through the device is kept at safe levels, regardless of the forward or reverse bias voltage applied.

The most common applications for SMCJ85A R7G diodes are in I/O interfaces, consumer protection circuits, power supplies, computer peripheral circuitry, and automotive applications. It is also suitable for use in space mightly level applications and is capable of handling peak surge and clamping voltages of up to 715V

In summary, the SMCJ85A R7G is a popular choice of TVS diode due to its fast response time, high power handling capability, and excellent thermal performance. Capable of protecting against electrostatic discharge and a wide range of transient voltages, it is suitable for many applications ranging from automotive to consumer protection circuits.

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