A5KP140A-G Circuit Protection

Transient Voltage Suppressors (TVS) diodes are becoming increasingly popular in applications that require protection from overvoltage or to minimize electrical noise. The A5KP140A-G TVS Diode is one type of Transient Voltage Suppressor (TVS) diode that is specifically designed for surge protection applications. The A5KP140A-G combines a relatively low cost with a high level of protection for automotive applications.

The A5KP140A-G is a low-cost alternative to other automotive TVS diodes and is designed to be a one-time solution to surge protection. The device is designed to operate in a wide voltage range, from about 5V to 40V. It is also designed to withstand up to 1500A peak surge current and 1400W peak power dissipation. The device is also capable of clamping transient voltage spikes to below 25V which helps to protect sensitive circuits from short duration overvoltages.

The A5KP140A-G is an unidirectional, axial lead type device which is very common in automotive protection applications. It has an open-top molded case for easy installation and a soft-mounted construction for low-profile, high-current density applications. The A5KP140A-G also complies with the IEC 61000-4-2 standard for immunity from ESD. The device also meets the requirements of automotive standards, such as AEC-Q101.

The A5KP140A-G is suitable for use in a variety of automotive applications including engine controllers, body electronics, and occupant safety systems. The device helps protect sensitive circuits from overvoltage and electrical noise, and it is designed for automotive environmental conditions. It also offers a low capacitance option for applications sensitive to capacitive loading.

The working principle of the A5KP140A-G is based on the principles of zener breakdown. Zener breakdown is when a diode is connected in reverse bias and a large enough voltage is applied so that the electric field in the junction overwhelms the binding energy of the electrons in the lattice, producing a net current flow. This current flow is limited by the impedance of the reverse-biased diode and thus protects the circuit.

In the A5KP140A-G TVS diode, the initial current flow of the zener breakdown is restricted until a breakdown voltage is reached. At the breakdown voltage, the current flow is limited enough to protect the downstream circuitry from overvoltage. The A5KP140A-G is designed to clamp voltage spikes to a maximum of 25V, ensuring that the downstream circuitry is protected from overvoltage.

The A5KP140A-G is a popular device for automotive applications due to its low cost, wide voltage range, high surge current capability, and high peak power dissipation. The device is also compliant with several important automotive and environmental standards and helps protect sensitive circuits from overvoltage and electrical noise.