JAN1N3312B

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Diodes - Zener - Single

The JAN1N3312B single zener diode is used for voltage regulation and protection of electronic circuits. It has an operating temperature range of -55°C to +150°C, reverse voltage of 12 Volts and a maximum power dissipation rating of 500 mW.

Application Fields

The JAN1N3312B is used in forming voltage reference when mounted in the form of a voltage regulator, providing an adjustable voltage reference. It can also be used as an adjustable voltage regulator and a surge absorption device in a wide range of circuits.

In circuits where a reverse polarity protection is required, the JAN1N3312B can act as a voltage clamping device and protect the circuit from reverse polarities. Another application for the JAN1N3312B is for switching capacitive loads such as CPUs, where a series connected zener diode is used to reduce the voltage excursions between the switch connected load and ground potential.

Working Principle

To understand the function of the JAN1N3312B, the working principle of a zener diode needs to be discussed. A zener diode is a specialized type of diode that has two regions of operation. Like a standard diode, it can be forward biased and operate in a linear mode, where the voltage drop across it is approximately 0.7V. When the anode is more positive than the cathode then current will flow through the diode.

When the anode is at a lower voltage than the cathode then the diode is reverse biased and the current flow is blocked. This is the breakdown region and it is here that the zener diode will begin conducting. As the reverse voltage across the diode increases, the current through the diode increases until it reaches a safe operating level.

The special feature of the zener diode is that its voltage break-down point is very temperature and current dependent. The JAN1N3312B is designed to break down at a particular voltage and minimize the difference between forward and reverse bias conditions. It is designed to meet a specific set of requirements as specified by the manufacturer and is usually optimized for specific applications such as voltage regulation.

Unlike standard diodes, the zener breakdown voltage is calculated using the Zener rating. This is the reverse voltage at which the diode begins to conduct and regulate the voltage.the JAN1N3312B has a reverse voltage rating of 12 volts.

In summary, the JAN1N3312B is a voltage regulator device and is used to condition a voltage input. It has a wide range of application fields, including reverse polarity protection, surge absorption, and reference and regulator circuits. It operates using the zener breakdown principle and can be used to regulate voltage levels.

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