1N2976B

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The 1N2976B is a negative three-terminal Zener diode specifically designed for high-efficiency and high frequency applications, such as military and aerospace uses. It features low leakage currents, low capacitance and fast switching speeds, and is designed to operate over a wide temperature range from -55°C to +125°C. It is commonly used in voltage regulation circuits and power supplies, and can be used to provide low voltage regulation in applications such as microcontrollers, CMOS logic chips, FPGA circuits and LED drivers, among others.

The 1N2976B has three terminals designated as common, anode, and cathode. The common terminal is typically connected to ground, while the anode and cathode are connected to either a voltage source (anode) or a load (cathode). The diode acts as a voltage regulator, allowing current to flow only in one direction (anode to cathode) and preventing current from flowing in the reverse direction. When the voltage across the anode and cathode is equal to or greater than the Zener voltage of the diode, current flows through the diode and is regulated to a specific value.

The 1N2976B operates based on the Zener effect which occurs in various types of diodes, including Zener diodes. A Zener diode is designed to breakdown and pass current when the voltage applied to its anode and cathode exceeds the Zener voltage. When the applied voltage is lower than the Zener voltage, the diode acts as an open circuit and does not allow current to flow. The 1N2976B has a Zener voltage of 15V, meaning that when the voltage between the anode and cathode reaches 15V current will begin to flow from the anode to the cathode, regulated to 15V.

The 1N2976B can also be used in voltage regulation circuits, such as over-voltage protection circuits. In this application, the diode is used to detect when a voltage exceeds a certain threshold and then activate a circuit to limit the voltage. This limits the maximum voltage to the required value and prevents costly damage to sensitive components due to over-voltage.

In summary, the 1N2976B is a negative three-terminal Zener diode specifically designed for high-efficiency and high frequency applications. It features low leakage currents, low capacitance and fast switching speeds, and is designed to operate over a wide temperature range from -55°C to +125°C. It is commonly used in voltage regulation circuits and power supplies, as well as over-voltage protection circuits. The 1N2976B operates based on the Zener effect, and its Zener voltage is 15V.

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