JAN1N4986CUS

Diodes - Zener - Single

The JAN1N4986CUS is a small surface-mount single Zener diode with a reverse breakdown voltage of either 5.1V or 5.6V. It is designed to establish and maintain a reverse breakdown voltage level by limiting current and to provide overvoltage protection. Moreover, it features an extended operating temperature of -65°C to 150°C and an exceptionally high power rating at high temperatures of 1W.

Application Field

The JAN1N4986CUS is suitable for a wide range of applications due to its high power rating and extended temperature range. It is a popular choice for overvoltage protection in power supplies, industrial and automotive electronics, peripherals, battery chargers and much more. It is particularly useful in low-current applications where a low-cost solution is required.

Working Principle

The JAN1N4986CUS is a normal diode with an extra region in the junction, created during the manufacture, called a Zener region. This region has a much lower resistance than any other part of the device and when activated with reverse bias current, it allows a very large current to flow in a controlled manner. This action of limiting current is referred to as the Zener effect, and this configuration results in controlled breakdown of the reverse voltage.

The output voltage is determined by the doping profile of the Zener region. The voltage rating of the diode and the series resistance determine the current limiting performance of the diode. Because the Zener region controls the current, the device holds the output voltage very precisely during steady-state operation.

The JAN1N4986CUS is a very effective circuit protection element, since the overvoltage protection that it provides protects the device from damages. Additionally, it is also a great way to save energy, since the low resistance of the Zener region allows maximum current to pass, while protecting against overdriving the protected device.

In summary, the JAN1N4986CUS is an ideal overvoltage protection diode designed to protect sensitive electrical components, and it is suitable for a wide range of applications due to its wide temperature range, high power rating and low cost.