The UDZSTE-177.5A is a Zener diode manufactured by Rohm Semiconductor. It is designed to provide voltage regulation and surge protection in a variety of electronic circuits. Zener diodes are specifically engineered to operate in the reverse breakdown region, allowing them to maintain a stable voltage across their terminals when the reverse voltage exceeds the Zener voltage. This characteristic makes them ideal for voltage clamping and overvoltage protection applications.

Applications

• Voltage Regulation: Used to maintain a stable voltage supply in electronic circuits, ensuring consistent performance of sensitive components.
• Overvoltage Protection: Employed to protect circuits from voltage spikes and surges, preventing damage to downstream components.
• Transient Voltage Suppression (TVS): Utilized to suppress transient voltages caused by electrostatic discharge (ESD) or inductive switching.
• Clipping Circuits: Used to clip or limit the amplitude of a signal, preventing it from exceeding a certain voltage level.
• Voltage Shifting: Incorporated in circuits to shift the voltage level of a signal to a desired range.

Features

• Precise Zener Voltage: Offers a stable and accurate Zener voltage of 77.5V, ensuring reliable voltage regulation and protection.
• Low Reverse Leakage Current: Minimizes current leakage in the reverse direction, improving energy efficiency and reducing heat dissipation.
• High Surge Current Capability: Can withstand high surge currents, providing robust protection against transient voltage events.
• Small Package Size: Available in a compact surface-mount package, allowing for high-density mounting on circuit boards.
• RoHS Compliant: Meets the requirements of the Restriction of Hazardous Substances (RoHS) directive, making it environmentally friendly.

Benefits

• Stable Voltage Regulation: Provides a consistent and reliable voltage supply, ensuring stable circuit operation.
• Enhanced Circuit Protection: Protects sensitive components from overvoltage and surge currents, improving circuit reliability and lifespan.
• Improved Energy Efficiency: Low reverse leakage current reduces power consumption and heat generation.
• Compact Design: Small package size allows for efficient use of board space in compact electronic devices.
• Environmentally Friendly: RoHS compliance ensures that the device does not contain hazardous substances.

Specifications

The UDZSTE-177.5A has a Zener voltage (Vz) of 77.5V. It comes in a small surface mount package, with a low reverse leakage current, typically in the nanoampere range. The power dissipation is dependent on the specific package type. It's RoHS compliant and designed for automated surface mount assembly.