3KASMC26AHM3_B/H Circuit Protection

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TVS - Diodes Overview

TVS – Diodes (Transient Voltage Suppressor Diodes) are devices used to protect against high voltage transients and voltage surges. They are constructed of a diode junction between two electrodes which are able to withstand high voltage transients. As such, they are used in electronic systems to protect from short-term voltage spikes, such as surges caused by lightning.

3KASMC26AHM3_B/H Application Field and Working Principle

The 3KASMC26AHM3_B/H is a Unidirectional TVS diode designed for high-voltage transient protection. It is specifically suitable for applications such as mobile phones, tablets, computers, touch screens, electronic toys, handheld devices, consumer electronics, automotive electronics, radio communication and other household electronic equipment. It is designed to protect sensitive components and circuits from damaging surges and electrostatic discharges.

The 3KASMC26AHM3_B/H operates according to the principle of ‘avalanche breakdown’. This occurs when the conduction current within the diode exceeds a certain level, typically referred to as the avalanche breakdown voltage. This breakdown voltage is generated because the current causes the voltage across the diode to increase exponentially which leads to avalanche breakdown.

When the diode is exposed to a transient surge voltage, its avalanche breakdown voltage is exceeded, leading to a current flow through the diode. This current is dissipated in the form of heat, reducing the voltage of the surge and protecting the equipment. Furthermore, this type of diode also has internal capacitors that absorb the surge energy, further reducing the damaging effect of voltage transients.

The 3KASMC26AHM3_B/H is rated for a peak power of 400 watts (8/ 20 μs) and peak pulse current up to 2 kA. It is able to handle surge voltages up to 28 V and can be used in temperature ranges as low as -55°C up to +150°C.

In conclusion, the 3KASMC26AHM3_B/H is an ideal Unidirectional Transient Voltage Suppressor diode for protecting sensitive components and circuits from damaging surges and electrostatic discharges in a wide range of applications such as mobile phones, tablets, computers, touch screens, electronic toys, handheld devices, consumer electronics, automotive electronics, radio communication and other household electronic equipment.

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