TZM5255B-GS18

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The TZM5255B-GS18 Shunt Voltage Reference series is a powerful, single Zener diode with a wide range of applications and a unique working principle. This device is designed for applications requiring precise voltages and precise current limits. It offers an industry-leading power dissipation, wide temperature range, and low cost.

The TZM5255B-GS18 offers high precision and remarkable performance features, including reverse surge current capability, low reverse leakage current, and low forward voltage drop. It is an ideal choice for applications such as circuit overvoltage protection, undershoot protection, test and measurement equipment, automotive ignition, and communications equipment.

The working principle of the TZM5255B-GS18 is based on a Zener breakdown phenomenon. When voltage across the diode is less than the Zener breakdown voltage (Vz), the diode acts like an ideal diode and allows current to flow through it. When the voltage across the diode is greater than the Zener breakdown voltage (Vz), the reverse voltage breakdown of the diode allows current to flow in the reverse direction. This current flow in the reverse direction is known as the Zener current and it is limited by the Zener characteristic of the diode. The Zener current (Iz) is also regulated by the Zener breakdown voltage, enabling precise control over the current throughout the operating temperature range of the diode.

Being a shunt voltage reference device, the TZM5255B-GS18 is typically connected in series with a load to regulate the output voltage. This shunt regulation allows the feedback current to be maintained while the output voltage is kept at a constant level. The device can also be used to limit current in the forward direction, since it offers a very low voltage drop (typically less than 0.2V).

In sum, the TZM5255B-GS18 Shunt Voltage Reference is a powerful and reliable Zener diode ideal for a variety of applications. With its reverse surge capability, low forward voltage drop, and precise current regulation, this device is perfect for circuit overvoltage protection, undershoot protection, test and measurement equipment, automotive ignition, communications equipment, and more.

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