TZMB75-GS18

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The TZMB75-GS18 is a single zener diode and is typically used to construct a voltage reference or a basic regulator. With a peak inverse voltage of 75 V, a maximum forward current rating of 18 mA, and a reverse standoff voltage of 8.5 V, the TZMB75-GS18 is useful in a variety of situations.

The TZMB75-GS18 works in reverse breakdown mode. The diode\'s anode is connected to the higher voltage source, which is connected to the positive terminal of a battery or power supply. The diode\'s other, cathode, terminal is then connected to the lower voltage source, which is connected to the negative terminal of the power supply. When the voltage at the anode is greater than the voltage at the cathode, current flows from the anode to the cathode.

Since the TZMB75-GS18 is a zener diode, it operates in reverse breakdown mode, which is a breakdown mechanism where the current starts to flow exponentially when the reverse gap between anode and cathode voltage increases beyond the zener voltage. In reverse breakdown mode, the diode can “regulate” reverse voltage in a circuit, which is the essential property that makes the TZMB75-GS18 a useful device. The current flow in reverse breakdown mode allows it to act as a voltage regulator, providing a consistent voltage level in most applications, regardless of the power supply voltage.

The TZMB75-GS18 can be used as a standby regulator in amplifier circuits or to maintain battery voltage levels in automotive applications. It is also used to provide voltage regulation and/or protection in personal computers, mobile phones, and other portable devices. In addition, the TZMB75-GS18 can be used in many AC/DC converters, providing protection from high voltage spikes.

When the TZMB75-GS18 is subject to an over-voltage condition, the diode will automatically activate, limiting the voltage that reaches the circuit. This is known as a zener breakdown mode. The TZMB75-GS18 can be used in this manner to protect sensitive components in circuits from over-voltage conditions and other transient voltages. The diode can also be used in low-voltage circuits to ensure stability in the presence of high voltages.

The TZMB75-GS18 is a versatile device that can serve many purposes, making it a popular choice for many applications where zener protection and voltage regulation are required. By understanding its basic working principle, engineers and technicians can easily identify when and how to use it in their own designs.

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