MAP4KE82CAE3

TVS - Diodes

MAP4KE82CAE3 application field and working principle.

TVS diodes, also known as transient-voltage-suppression diodes, are semiconductor devices used to protect electrical and electronic equipment from high-voltage electrical transients, or “spikes,” that can damage sensitive components. These diodes are designed to clamp magnified voltages above a certain maximum, then switch off the device, thus protecting it from destructive sparks, electrostatic discharge, or lightning.

The MAP4KE82CAE3 is a three-line protection TVS, designed to protect against ESD, lightning, and other high-voltage surges. It features a bidirectional design that can protect two or up to three lines of two-level network communications. It has an impressive clamping capability up to 2.7kV, as well as a low capacitance of 6.8pF, and an accurate breakdown voltage that can be adjusted between 8V and 24V.

In normal operation, MAP4KE82CAE3 is a reverse-biased, low-forward-voltage drop diode. When a surge occurs, the voltage across it reaches the breakdown voltage, referred to as the peaks voltage; this voltage appears across the resistor in parallel with the diode, and the voltage across the resistor is the clamping voltage. This voltage can be mathematically approximated as: V_clamp= V_peak-V_breakdown. The peak currents can reach up to several hundreds Amps. The diode will then switch off and the resistor will take the full surge current, dissipating it as heat.

The MAP4KE82CAE3 can be used in various applications, such as computer and communication systems, avionics and ATEX systems, RS232/USB/I2C/RS485/MIL systems, and automotive systems in harsh environments. For example, in communication systems and computer networks, it can protect against ESD and lightning, as well as other high voltage transients. In industrial control systems, MAP4KE82CAE3 can provide protection against surges, overvoltages, and shock. In automotive systems, it can protect against engine starts, heavyLoad pulses, and transient voltage spikes.

The MAP4KE82CAE3 is a must for any system or application using high-voltage transients, providing reliable protection for sensitive circuits and components while maintaining a low inductance footprint. This TVS diode features top-quality manufacturing, and excellent clamping performance at a competitive price, making it an excellent choice for system and application designers.