The MMSZ5239BF is a surface-mount Zener diode manufactured by Lite-On Inc. It's designed to provide precise voltage regulation in a wide range of electronic circuits. This diode is commonly used to protect sensitive components from voltage surges or to create a stable reference voltage.

Applications:

• Voltage regulation
• Overvoltage protection
• Clipping circuits
• Voltage referencing
• Transient voltage suppression

Features:

• Surface Mount Package: SOD-123 package allows for automated assembly and high-density PCB designs.
• Precise Zener Voltage: Offers a tightly controlled Zener voltage of approximately 9.1V.
• Low Leakage Current: Minimizes power loss and ensures accurate voltage regulation.
• High Surge Current Capability: Provides protection against transient voltage spikes.
• RoHS Compliant: Environmentally friendly and compliant with RoHS standards.

Benefits:

• Stable Voltage: Provides a stable and reliable voltage reference.
• Component Protection: Protects sensitive components from overvoltage conditions.
• Space Saving: The small SOD-123 package saves valuable board space.
• Easy Assembly: Surface mount design simplifies assembly and reduces manufacturing costs.
• Environmentally Friendly: Compliant with RoHS standards, minimizing environmental impact.

Technical Specifications:

• Zener Voltage (VZ): 9.1V (Nominal)
• Power Dissipation (PD): 500mW
• Zener Test Current (IZT): 5mA
• Reverse Leakage Current (IR): 5 μA @ 6.4 V
• Operating Temperature Range: -55°C to +150°C
• Package: SOD-123

The MMSZ5239BF Zener diode from Lite-On is a highly reliable and precise component for voltage regulation and overvoltage protection. Its compact SOD-123 package and stable performance make it suitable for a wide array of applications, from consumer electronics to industrial controls. The low leakage current and high surge current capability ensure optimal performance and protection in demanding environments.