SMAJ400CA-H

The SMAJ400CA-H is a unidirectional 400 Watt Transient Voltage Suppressor (TVS) Diode designed to protect sensitive electronic equipment from voltage transients induced by lightning, induction and other voltage neutralization events. With its low reverse clamping voltage of 5.2V, it provides effective protection against high-voltage and lightning surges, with a peak pulse power dissipation of 400 Watts. It is widely used in telecom equipment, industrial control systems, and automotive and other applications.

Application Field of SMAJ400CA-H

SMAJ400CA-H is widely used in many fields such as telecom equipment, industrial control systems, automotive and other applications. It is an ideal choice to protect electronic circuits from voltage spikes and other transient voltage events due to external disturbances such as electrostatic discharge, lighting, and other waveform-neutralizing events. With a holding voltage of 9.5V, it will efficiently protect electronic circuits with low-voltage components. Its 400 Watts surge power dissipation capability makes it perfect for applications requiring higher power protection.

Besides, SMAJ400CA-H also be widely used the medical technology equipment, data storage devices with the development of technology. In the medical technology equipment, it can prevent external surge voltage that may bring the harm to the patient. For example, the electromotion machine running too fast or too slow, ventilator machine stops working, all that all can bring the hurt for the patient. In the data storage devices, it can protect the data from the loss.

Working Principles of SMAJ400CA-H

The SMAJ400CA-H is a Transient Voltage Suppressor (TVS) Diode designed to protect sensitive electronic equipment from voltage transients induced by lightning, induction or other voltage neutralization events. It works by preventing surge voltages from exceeding a certain level, which is then clamped and dissipated into a safe voltage level. The SMAJ400CA-H operates by using two important components – the Zener diode and the sense resistor. The Zener diode is used to control the voltage level by allowing current to flow when the applied voltage exceeds its specified breakdown voltage. The sense resistor is used to limit the current during normal operation and the voltage drop across it is used to detect a fault condition.

When the instantaneous voltage attack surge voltages, the voltage drop across the sense resistor is larger than the tolerance of the TVS. At this time, the Zener diode allows the current flow limited by the sense resistor through it, and this current will be clamped at the breakdown voltage level of the Zener diode. This clamped voltage will then dissipated across the transient voltage suppressor. This is the basic concept of transient voltage suppressors - they provide effective protection against high voltage and lightning surges.

Overall, SMAJ400CA-H is a superior protection solution for any application that requires protection against transient voltage events. It provides excellent protection from lightning, induction or electrostatic discharge, while offering a low clamping voltage of 5.2V, a holding voltage of 9.5V and a 400-watt surge power dissipation capability, making it an ideal choice for many applications.