SMCJ7.5CA-13

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The SMCJ7.5CA-13 is primarily used as a transient voltage suppressor (TVS), also known as a high-frequency protector. This type of diode is increasingly being used in automotive electronics to protect against various types of transients, such as inductive and capacitive kickback transients, as well as from power surges.

Applications

The SMCJ7.5CA-13 is designed to briefly absorb surge pulses up to 1500A peak. These diodes are generally used in automotive electronics, such as anti-lock brake systems, as well as in consumer electronics, such as cameras and TVs. Additionally, it can be used to protect industrial control and communications systems, including lighting and video surveillance systems.

The SMCJ7.5CA-13 is built with an SMA (surface mount assembly) package, and offers superior protection from transients in a small size. These TVS diodes are suitable for use in a wide range of environments from -55°C up to +175°C, with higher temperatures possible if the diode is operated within 40 percent of its maximum power dissipation.

Working Principle

In normal usage, the SMCJ7.5CA-13 operates as a low-voltage conductor; however, when the voltage reaches a certain level, it switches to a high-voltage suppressor. When a voltage spike is applied, the voltage over the diode is quickly clamped to a safe level. This is achieved by having the zener diode integrated into the TVS diode. The zener acts as a voltage-dependent resistance, allowing the current to flow when the voltage is below a certain threshold. When the voltage reaches this threshold, the current begins to decrease and the voltage is clamped to a safe level.

The SMCJ7.5CA-13 is designed to provide maximum protection against power surges and other transients. The TVS diode is designed to absorb high-voltage transients, allowing the current to reduce quickly as the voltage spike passes. The zener diode works by slowing down the current, allowing the diode to return to its normal state without any damage. This makes them ideal for protecting sensitive electronic components.

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