SMAJ28C-E3/5A

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Transil diodes, or TVS (Transient Voltage Suppressor) diodes, are two-terminal semiconductor devices that offer a high level of protection for sensitive electrical components from voltage peaks due to electrostatic discharge (ESD) and lightning strikes.

The SMAJ28C-E3/5A is a unidirectional device, and is designed to protect sensitive electronic components such as semiconductor ICs, transistors, and diodes from overvoltage transients originating from load dump, inductive load switching, and static electricity. It offers low capacitance, excellent clamping capability, and fast response times, making it suitable for applications such as automotive and industrial electronics.

The SMAJ28C-E3/5A can be used in a wide range of applications, including power supplies, power inverters, voltage regulators, power converters, data line protection, cell phones, panel meters, battery chargers, alarm systems, lighting control systems, and more. With its low capacitance and maximum continuous operating voltage of 28V, it is especially suited for automotive applications.

The SMAJ28C-E3/5A is a bidirectional TVS diode, meaning that it can operate in either direction, allowing it to protect against high transient voltages in both positive and negative polarities. The device has a working peak pulse power dissipation of 1.2 kW, and a maximum transient spike voltage of at least 5 kW. This gives it the ability to clamp and absorb large voltage transients, while still providing high levels of protection.

The operating principle of the SMAJ28C-E3/5A is based on avalanche breakdown, which occurs when a voltage transient is applied to the anode of the diode. When the anode-cathode voltage reaches the breakdown level, current starts to flow and this current is subsequently limited by the internal resistance of the diode. The current is clamped to a safe level, reducing the ESD or lightning strike voltage below the breakdown voltage of the protected component.

The SMAJ28C-E3/5A is a low capacitance, low impedance diode designed to protect sensitive electronics from transient overvoltage events. Its bidirectional configuration makes it suitable for a wide range of applications, such as automotive and industrial electronics, while its high surge capability ensures reliable protection.

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