The MMSZ4690 is a Zener diode manufactured by General Semiconductor. This surface-mount device is designed to provide precise voltage regulation and overvoltage protection in various electronic circuits. Zener diodes are characterized by their ability to maintain a stable voltage when operated in the reverse breakdown region.

Applications:

• Voltage Regulation: Used in power supplies and other circuits to maintain a stable output voltage.
• Overvoltage Protection: Protects sensitive components from voltage surges and transients.
• Clipping Circuits: Limits voltage levels in signal processing applications.
• Reference Voltage: Provides a stable reference voltage for instrumentation and control systems.
• Transient Voltage Suppression: Protects circuits from harmful transient voltages.

Features:

• Precise Zener Voltage: Offers a well-defined and stable breakdown voltage.
• Low Leakage Current: Minimizes current leakage in the reverse bias condition.
• Small Surface Mount Package: Enables compact and efficient PCB designs.
• High Surge Capability: Designed to withstand transient voltage surges without damage.
• RoHS Compliant: Complies with the Restriction of Hazardous Substances directive.

Benefits:

• Stable Voltage: Provides a consistent and reliable voltage reference for critical circuits.
• Overvoltage Protection: Safeguards sensitive components from damage due to voltage spikes.
• Simplified Design: Offers a simple and effective solution for voltage regulation and protection.
• Reduced Board Space: Small form factor allows for high-density circuit designs.
• Environmentally Compliant: Meets environmental standards for hazardous substance reduction.

Additional Details:

The MMSZ4690 has a typical Zener voltage of 3.9V with a tolerance, typically around ±5%. The power dissipation is typically 500mW. It is available in a SOD-123 package. Detailed specifications, including electrical characteristics, thermal resistance, and surge current ratings, are available in the product datasheet. It's often used in low voltage applications where precise voltage regulation is critical.