SMBJ36A Circuit Protection

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SMBJ36A is a high-speed transient voltage suppressor (TVS) diode used across a variety of applications as a protection from over-voltages caused by power surges, electrostatic discharges, or other electrical fast transients. Specifically designed to protect semiconductor components from voltage spikes, this diode is able to dissipate energy relatively quickly and with high reliability. It has become an essential component for a number of different power systems, offering utmost security in a wide range of devices.

SMBJ36A Application Field

SMBJ36A is commonly used with integrated circuits, power management systems, telecom and networking equipment, consumer electronics, automotive systems, and other high-frequency applications such as data converters and solid-state drives. It is a bidirectional transient voltage suppressor capable of handling energy levels up to 5.6A in the reverse direction, allowing components to remain protected from larger voltage perturbations and power surges. It has a peak power dissipation of up to 1500W and an operating temperature range of -65°C to 150°C.

The device\'s wide capacitance range allows it to be used in multiple types of power systems. Due to its high reverse capacitance and small size, it is deployed in numerous high frequency applications that require protection from transient voltage spikes such as communications, computers, industrial control systems, and consumer electronics. Its ultra-compact form factor also makes it the perfect choice for space-constrained PCBs.

Working Principles

SMBJ36A runs on a voltage clamping technology that passively clamps the voltage at a fixed level when a high power transient strikes. This prevents the excessive voltage from reaching any sensitive components in the circuit, effectively protecting them. During normal operation, the device acts like an open circuit, although capacitance does exist across the device allowing for current flow in the forward direction.

When a voltage spike occurs, electrons located in the junction bounce off rapidly as a result of the energy generated. This causes the diode to lower the voltage across the junction and limit the peak voltage. If the voltage spikes again, the diode is able to reduce it to a manageable level without compromising the integrity of the system.

SMBJ36A provides an ideal solution for applications that require reliable protection from voltage spikes. It is an excellent choice for suppressing the voltage when it rises above a certain value, preventing any damage that could have occurred otherwise. Its small size and efficient power dissipation make it the ideal choice for a variety of power systems.

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