The 1SMA4731A is a surface-mount Zener diode from EIC Discrete Semiconductors, designed for voltage regulation and transient voltage suppression. It is part of the SMA series, which is known for its compact size and efficient heat dissipation. This diode is commonly used to protect sensitive electronic components from overvoltage conditions.

Applications

• Voltage regulation in electronic circuits
• Transient voltage suppression
• Overvoltage protection in power supplies
• Protection of I/O interfaces
• Clamping circuits

Features

• Surface Mount Package: SMA (DO-214AC)
• Zener Voltage: 4.7V (Nominal)
• Power Dissipation: 1W
• Low Profile Package
• Glass Passivated Junction
• Excellent Clamping Capability
• Typical IR less than 5.0 μA above 11 V

Benefits

• Protects sensitive components from voltage surges.
• Provides stable voltage regulation.
• Small footprint suitable for high-density PCB layouts.
• High reliability due to glass passivated junction.
• Easy to mount and solder.
• Reduces downtime and maintenance costs by preventing component failure.

Additional Details

The 1SMA4731A features a glass-passivated junction, ensuring high reliability and stability. The SMA package provides efficient heat dissipation, allowing the diode to handle higher power levels. It is designed to meet industry standards for surge protection. The forward voltage is typically 1.2V at a forward current of 200mA. The operating and storage temperature range is -65°C to +150°C. The device is RoHS compliant.

This Zener diode is crucial in applications where maintaining a stable voltage level is critical, or where there is a risk of voltage spikes damaging sensitive components. Its robust design and reliable performance make it a preferred choice for a wide range of electronic devices.