1N4738AUR

Overview

The 1N4738AUR is a Zener diode manufactured by Microchip Technology, designed for voltage regulation applications. It operates in the breakdown region to maintain a stable output voltage across varying load conditions. The component utilizes a surface-mount package suitable for automated assembly processes. It provides reliable performance within specified electrical limits defined by its datasheet specifications.

Feature Summary

• Provides precise voltage regulation through controlled Zener breakdown characteristics
• Utilizes a compact surface-mount footprint for efficient board space utilization
• Features a hermetic seal construction to ensure environmental durability and long-term reliability

Applications

• Precision voltage reference circuits requiring stable DC levels
• Over-voltage protection stages in sensitive electronic systems
• Power supply regulation modules for maintaining consistent output voltages

Procurement Notes

Verify the specific ordering suffix and tape-and-reel configuration when sourcing this component. Confirm that the procurement channel supplies genuine Microchip Technology products with full traceability documentation. Ensure compatibility with existing surface-mount assembly equipment regarding reel size and tape specifications before placing orders.

Selection Notes

Select this component when a hermetically sealed Zener diode is required for high-reliability applications. Consider the surface-mount package type for automated manufacturing needs. Evaluate the thermal management requirements of the target circuit against the device's power dissipation capabilities. Ensure the operating voltage range aligns with the system's regulatory specifications.

Part Context

This part belongs to the standard Zener diode family produced by Microchip Technology. It shares functional similarities with other devices in the series but differs in packaging and sealing methods. The UR suffix typically indicates a specific reel-based packaging format intended for high-volume surface-mount production lines.

Replacement Considerations

Substitute parts must match the Zener voltage, power rating, and package dimensions. Verify that alternative components offer comparable hermetic sealing if environmental resistance is critical. Check for equivalent dynamic impedance and leakage current specifications to ensure circuit performance remains unchanged.