The RD4.7UM-T1 is a Zener diode manufactured by NEC. Zener diodes are specifically designed to operate in the reverse breakdown region, providing a stable voltage reference. They are commonly used in voltage regulation, surge suppression, and other voltage-sensitive applications.

Applications

• Voltage Regulation: Providing a stable voltage output in power supplies and other circuits.
• Surge Protection: Protecting sensitive electronic components from voltage spikes.
• Clipping Circuits: Limiting voltage levels to protect downstream components.
• Overvoltage Protection: Preventing damage from excessive voltage conditions.
• Reference Voltage: Used as a precise voltage reference in various measurement and control systems.

Features

• Zener Voltage: 4.7V (Nominal). This is the voltage at which the diode will begin to conduct in the reverse direction.
• Low Dynamic Impedance: Ensures a stable output voltage even with varying current.
• Surface Mount Package: Allows for efficient and compact board design.
• High Reliability: Designed for long-term stability and performance.
• Fast Response Time: Quickly responds to voltage changes, providing effective protection.

Benefits

• Stable Voltage Output: Provides a consistent voltage reference for critical circuits.
• Effective Surge Suppression: Protects sensitive components from damage due to voltage transients.
• Compact Design: The surface mount package saves board space and reduces overall system size.
• Improved System Reliability: Enhances the overall reliability of the electronic system.
• Cost-Effective Solution: Provides a reliable and cost-effective solution for voltage regulation and protection.

Additional Details

The RD4.7UM-T1 is commonly available in a small surface mount package (e.g., SOD-323 or similar). Detailed specifications, including the reverse leakage current, power dissipation, and operating temperature range, are available in the manufacturer's datasheet. It is important to consult the datasheet to ensure the diode is operated within its specified limits. The temperature coefficient of the Zener voltage should also be considered for applications requiring high accuracy over a wide temperature range. Always refer to the official NEC datasheet for the most accurate and up-to-date information.