MAP4KE36CA

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TVS - Diodes are powerful devices used in a range of industries for various protection and switching applications. The MAP4KE36CA is a high-speed, low-capacitance diode that is integrated with a thick oxide layer and is designed for electrostatic discharge (ESD) and transient voltage suppression (TVS) applications. It offers protection to microcontrollers, small processors, Wi-Fi antennas, signal lines, and other devices from ESD/TVS events.

The MAP4KE36CA is designed to exceed the maximum esd surge requirements of IEC 61000-4-2 level 4 (±30kV air and ±15kV contact discharge) and is compliant with UL1577, EN 61000-4-2 (±15 kV). It features low capacitance of 0.8 pF without adding any significant parasitic capacitance to the signal line, as well as low leakage current of 250nA (typical) at 8V. The device is packaged in the SOT-89 package, an excellent choice for minimizing the impact of parasitic inductance on the packaged devices.

The MAP4KE36CA is an ideal protection device for applications that demand high-speed switching and protection, such as Ethernet, USB 3.0, HDMI, and other digital signal lines. Furthermore, the device can also protect from lightning, load cross switching, inductive kickback, and other transient events. It is useful in automotive, industrial, consumer electronics, medical, and telecom applications.

The working principle of the MAP4KE36CA is primarily based on the Zener effect. This involves an additional layer of silicon that is added to the diode structure, which allows the MAP4KE36CA to switch off during transient events and divert the current away from the device. The typical Zener voltage for the MAP4KE36CA is 5.7V, although this may vary depending on the application.

When the voltage increases beyond the Zener voltage, the diode turns on and is able to divert current away from the device. This is done by creating an avalanche breakdown, which is a rapid increase in current due to electrons being accelerated in the reverse direction through the junction as they collide with the lattice of the diode structure. This reduces the voltage across the diode and diverts the current.

When the voltage returns to normal levels, the diode turns off and the current is redirected to the device. The MAP4KE36CA is designed to automatically reset after an over-voltage, which ensures that the device is ready for any subsequent transient event. This resetting feature makes the device ideal for protecting potentially valuable and sensitive devices from transient events.

The MAP4KE36CA is a reliable and compact protection device that is used in a range of applications to protect devices from transient events. Its low capacitance, low leakage current, and resetting feature make it an excellent choice for high-speed digital signal line protection. Additionally, its Zener working principle ensures that it is able to divert current away from the device and protect it from any ESD or TVS events.

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