MAPLAD30KP26CAE3

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TVS (Transient Voltage Suppressor) diodes are an integral part of many protection circuits, such as those used in emergency systems and vehicles. Their basic function is to protect sensitive electrical and electronic components from overvoltage phenomena. One type of TVS diode that is commonly used is the MAPLAD30KP26CAE3. This article will discuss the application field and working principle of this device.

The MAPLAD30KP26CAE3 is a bidirectional diode which is designed for transients up to 30KW peak pulse power and 600W peak impulse current. Its maximum working voltage is 26V with a stand-off voltage of 15V. This device is commonly used in automotive applications, such as protection of ECU (Engine Control Unit), ABS (Anti-lock Braking System) and OBD (On-Board Diagnostics). It also finds application in the down-hole instrumentation of the oil and gas industry, as well as in electric vehicles and renewable energy systems.

The working principle of this TVS diode is based on the avalanche breakdown effect. When a pulse of voltage reaching the device’s clamping level is applied across it, the current will increase through the reverse breakdown zone of the diode, thus allowing the current to flow through the device in the forward direction. This process is initiated by the buildup of minority carriers, which cause the voltage across the junction to drop and consequently increases the forward current. The forward current continues until the voltage across the junction reaches a certain level (called clamping voltage), which is determined by device’s peak power rating and pulse width.

The MAPLAD30KP26CAE3 has some advantages over other TVS diodes. It has a low capacitance for better performance with low inductance circuits. It has low clamping voltage and fast response time, which makes it suitable for protection of high frequency circuits. It also has a high temperature coefficient, excellent noise immunity and low thermal resistance.

In conclusion, the MAPLAD30KP26CAE3 is one of the most commonly used TVS diodes for automotive, oil and gas and renewable energy applications. It is designed for transients up to 30KW peak power and 600W peak impulse current, with a maximum working voltage of 26V and a stand-off voltage of 15V. It works based on the avalanche breakdown effect and it has many advantages, such as low capacitance, low clamping voltage, fast response time, high temperature coefficient and excellent noise immunity.

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