1.5SMC33AHM6G

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TVS (transient-voltage-suppression) diodes are electronic components commonly used in circuit protection from over-voltage transients due to induced voltage spikes in a circuit. TVS diodes perform a similar role to zener diodes, but offer significantly better performance. This article briefly discusses the application fields and working principles of 1.5SMC33AHM6Gs, a type of TVS diode.

Applications

1.5SMC33AHM6Gs are effective in a wide range of application fields. Due to their high power rating, they provide greater protection than ordinary TVS diodes. Generally, they are used in surge or over-voltage protection of electrical circuits or systems with ±5kV and above surge capability and 2.0A peak pulse current. Typical application fields include automotive electronics, communications equipment, power supplies, LED lighting, industrial circuits, as well as consumer electronics such as computers, TVs, and mobile phones. Additionally, 1.5SMC33AHM6Gs are designed to protect against voltage transients such as inductive switching, lightning, and electrostatic discharge (ESD).

Working Principles

When a voltage applied to a 1.5SMC33AHM6G exceeds its rated breakdown voltage, it enters the avalanche mode. At this point, the diode begins to conduct, thus providing protection to the electronic device. As the voltage increases, a phenomenon called avalanche multiplication takes place, as a number of charge carriers suddenly enter the diode’s PN junction. This multiplication results in a sudden and large increase in the current flow through the diode, which allows the diode to quickly absorb the surge, thus protecting the equipment. When the voltage drops below a certain threshold, the diode returns to its non-conducting state, and the protection is restored.

1.5SMC33AHM6Gs are highly reliable components for circuit protection from over-voltage transients. Aside from their high power rating, they offer very fast response time, low clamping voltage, and low test current (compared to other TVS diodes). Furthermore, they also feature excellent ESD protection and durable performance, making them suitable for use in various application fields.

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