The UDZ3.9B is a Zener diode manufactured by Rohm Semiconductor. It is designed to provide a stable reference voltage for various electronic circuits. This diode is characterized by its precise Zener voltage and low dynamic impedance.

Applications:

• Voltage regulation
• Voltage clamping
• Overvoltage protection
• Reference voltage sources
• Transient voltage suppression

Features:

• Precise Zener voltage
• Low dynamic impedance
• Small package size
• High reliability
• Sharp breakdown characteristics

Benefits:

• Stable voltage reference for sensitive circuits
• Effective protection against voltage transients
• Compact design suitable for space-constrained applications
• Consistent performance over a wide temperature range
• Improved circuit stability and accuracy

Additional Details:

The UDZ3.9B has a nominal Zener voltage of 3.9V with a specified tolerance. It is typically available in a small surface-mount package, such as SOD-323 or similar. The low dynamic impedance ensures stable voltage regulation even with varying current. This diode is designed for low-power applications and offers excellent performance in a compact form factor. The UDZ3.9B is commonly used in portable devices, industrial controls, and automotive electronics where precise voltage regulation and overvoltage protection are required. It also meets RoHS compliance standards.