JAN1N3768R

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The JAN1N3768R is a rectifier diode typically used for two different applications. One is for reversing the power polarity, and the other is for rectifying AC power to DC. This diode is meant for an unidirectional current flow and are most commonly used in power supplies and adapters.

Overview

The JAN1N3768R diode is a 400V, 1.8A, axial leaded single diode with a datasheet forward voltage drop of 3.2V at 10A. It is packaged in a DO-41 style international configuration and is hermetically sealed. The maximum check current is rated at 20mA, meaning that if this value is exceeded, there is a possibility of damage to the device. The rectification junction temperature is 125°C. The operating temperature for this device ranges from -65°C to 175°C.

Application Field

This diode is used in electrical and electronic circuits to reverse the power polarity. When the diode is connected in series to an electrical device, current will only be allowed to flow only in one direction. This connection is known as a polarity protection circuit, and it prevents damage to the device by allowing only power from the correct source or polarity to enter the device.

The JAN1N3768R is also commonly used as a bridge rectifier when connected in an application such as a power adapter. The bridge rectifier is commonly used to convert AC power to DC. The rectifier functions by passing current through in only one direction, may it be positive or negative, and will always result in DC power. This works through the utilization of four diodes, two on either side of an AC power source, connecting opposing diodes so that current can only flow in one direction.

Working Principle

When using the JAN1N3768R as a polarity protection, the diode is connected in series to the electrical device, allowing the current to only flow in one direction. This is done through the rectifying junction, which is composed of a p-type semiconductor and an n-type semiconductor. When current is applied to the junction in the wrong direction, the electron holes are destroyed and the current is blocked, protecting the device from incorrect polarity.

The bridge rectifier circuit works by connecting four diodes in a series of four, creating two anodes and two cathodes. AC power is fed into the anodes, and the cathodes will output DC power. By connecting two p-type diodes to two n-type diodes, the diode rectification process is initiated. The holes in the p-type diodes will start to fill, allowing a direct flow of current in one direction, ensuring that the output power is a DC polarity. The JAN1N3768R is commonly used for these types of applications due to its low forward voltage drop and power rating.

Conclusion

In conclusion, the JAN1N3768R rectifier diode is an versatile and robust device used for two primary application fields. It is often used as a polarity protection device in electrical circuits, as it allows current to flow in one direction and prevents damage to the device by blocking current in the opposite direction. The JAN1N3768R is also used as a bridge rectifier, where it functions by connecting two p-type and two n-type diodes in series to rectify AC power to DC. When considering the JAN1N3768R for any of these applications, it is important to keep in mind the maximum check current, the rectification junction temperature, and the operating temperature range.

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