The UDZV4.3B is a Zener diode from Rohm Semiconductor, specifically designed for providing stable voltage regulation and overvoltage protection, particularly in low-voltage applications. This diode maintains a consistent voltage level despite fluctuations in current, rendering it suitable for use as a voltage reference or shunt regulator in sensitive electronic circuitry.

Applications

• Low-Voltage Regulation: Stabilizing voltage in battery-powered devices and portable electronics.
• Overvoltage Protection: Protecting sensitive components from low-voltage spikes and transient surges.
• Voltage Clamping: Limiting voltage levels to protect downstream circuitry in low-voltage systems.
• Reference Voltage Generation: Providing a precise reference voltage for analog circuits and measurement tools.
• Signal Conditioning: Protecting analog signals from exceeding safe voltage limits.

Features

• Zener Voltage: 4.3V nominal Zener voltage, ensuring accurate low-voltage regulation.
• Low Reverse Leakage Current: Minimizes power loss and maximizing efficiency in low-power applications.
• High Surge Current Capability: Offers robust protection against transient voltage events.
• Small Package Size: Well-suited for compact and space-constrained designs.
• High Reliability: Guarantees stable performance under various operating conditions.

Benefits

• Stable Voltage Supply: Provides a consistent voltage output, crucial for accurate circuit operation in low-voltage applications.
• Enhanced Circuit Protection: Safeguards sensitive components from damage caused by voltage spikes and surges.
• Improved Battery Life: Low leakage current reduces power consumption in battery-operated devices.
• Compact Circuit Design: Small form factor enables integration into densely packed circuit boards.
• Increased System Reliability: Lowers the risk of component failure, extending the lifespan of electronic devices.

Additional Details

The UDZV4.3B Zener diode is packaged in a DO-34 package. The Zener voltage is specified under defined test conditions, and its characteristics may vary depending on temperature. Commonly used in mobile phones, portable media players, and various low-power electronics. The datasheet provides detailed specifications on power dissipation and temperature ratings.