The FM4757W is a Zener diode manufactured by Rectron Semiconductor. It's designed to provide a stable reference voltage or voltage regulation in electronic circuits. This diode operates by allowing current to flow in the reverse direction when the voltage reaches its Zener breakdown voltage, effectively clamping the voltage at that level.

Applications:

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

Features:

• Zener Voltage: 51V
• Power Dissipation: 1W
• Low Reverse Leakage Current: Minimizes current flow in the reverse direction below the Zener voltage.
• High Surge Current Capability: Can withstand high current surges without damage.
• DO-214AC (SMA) Package: Surface-mount package for efficient board assembly.
• RoHS Compliant: Complies with Restriction of Hazardous Substances directive.

Benefits:

• Stable Voltage Regulation: Provides a stable output voltage despite variations in input voltage or load current.
• Overvoltage Protection: Protects sensitive circuits from damage due to overvoltage conditions.
• Improved Circuit Reliability: Provides a reliable voltage reference for critical circuit functions.
• Easy Integration: Standard SMA package simplifies board assembly and integration into existing systems.
• Environmentally Friendly: RoHS compliant, minimizing environmental impact.

Technical Specifications:

• Zener Voltage (Vz): 51V ± 5%
• Power Dissipation (Pd): 1W
• Operating Temperature: -65°C to +150°C
• Package Type: DO-214AC (SMA)
• Reverse Leakage Current (Ir): 5 µA

The FM4757W Zener diode provides a reliable and cost-effective solution for voltage regulation and overvoltage protection in a wide range of electronic applications. Its stable Zener voltage, high surge current capability, and compact SMA package make it a popular choice for designers and engineers.