MA1.5KE250A

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A Transient Voltage Suppressor (TVS) or diode is a device that protects other sensitive components from electric surges due to their ability to clamp the voltage to a predetermined level. The MA1.5KE250A is an example of such a device. In this article, we will explore the application fields and working principle of the MA1.5KE250A.

The MA1.5KE250A is a three-terminal device, meaning it contains an anode, cathode, and gate. It is encapsulated in a glass SMA-package to prevent voltage spikes. Furthermore, the MA1.5KE250A is designed with a ceramic coating to prevent scratches, corrosion, and other wear and tear on the device.

The MA1.5KE250A is designed for use on DC automotive applications, such as automobiles, trucks, and recreational vehicles. It is also compatible with military and commercial aircraft and is one of only a few TVS diodes that are spacially qualified to MIL-STD-883. Additionally, it is also used in Medical, Wearable, and Industrial applications.

The MA1.5KE250A works on the principle of avalanche breakdown. When a voltage above the device\'s breakdown threshold is applied, electrons in the gap between the anode and cathode are accelerated due to the electric field set up by the voltage. As the voltage continues to increase, the electrons gain enough energy to collide with the semiconductor’s atoms, creating a large number of electron-hole pairs. This large number of charge carriers significantly increases the conductivity of the device, allowing current to flow.

When the current is brought down to a safe level, the MA1.5KE250A automatically restores operation, returning to its normal state. This process works in both directions. If the voltage drops below the device\'s breakdown voltage, the device will return to its normal, non-conductive state.

Thanks to its unique design, the MA1.5KE250A offers excellent protection from voltage spikes. It has a normal voltage breakdown of 400V and can withstand up to 6kV as a surge or spike. It can also act as an ESD protectant, with high-energy absorption (400W) and low capacitance (3.5pF).

In summary, the MA1.5KE250A is a state-of-the-art three-terminal TVS diode designed for DC automotive applications. It works on the principle of avalanche breakdown, meaning it will automatically switch off if the voltage exceeds its breakdown threshold or drops below it. Furthermore, it offers excellent protection from voltage spikes, making it an ideal choice for medical, wearable, and industrial applications.

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