1N4748A R1G

Overview

The 1N4748A R1G is a single silicon Zener diode manufactured by Taiwan Semiconductor Corporation. It features a nominal Zener voltage of 22 V with a tolerance of ±5%. The device is rated for a maximum power dissipation of 1 W and operates within a temperature range of -65 °C to +150 °C. Key electrical parameters include a maximum dynamic impedance of 23 Ω, a test current of 11.5 mA, and a maximum reverse leakage current of 100 nA. The component utilizes a DO-41 axial through-hole package with pure tin terminations.

Feature Summary

• Glass passivated junction construction for enhanced stability
• Built-in strain relief mechanism integrated into the package design
• Low inductance characteristics suitable for general switching applications

Applications

• Voltage regulation circuits
• Voltage reference standards
• Overvoltage protection stages

Procurement Notes

Verify the specific suffix 'R1G' against official Taiwan Semiconductor documentation to confirm reel packaging specifications and terminal finish details. Ensure compliance requirements match project needs as RoHS status varies by manufacturer batch. Confirm lead availability directly with the supplier or authorized distributor before finalizing procurement plans.

Selection Notes

Select this component when a stable 22 V reference is required in a standard axial glass package. Consider the 1 W power rating and thermal derating curves for high-temperature environments. Verify that the 23 Ω dynamic impedance meets the ripple rejection requirements of the target circuit design.

Part Context

This part belongs to the 1N47xx series of 1 Watt Zener diodes. These components are widely used in industrial and commercial electronics for basic voltage clamping and regulation tasks. The DO-41 package provides a robust mechanical solution for through-hole mounting on printed circuit boards.

Replacement Considerations

Cross-reference with other manufacturers offering the 1N4748A specification. Verify pinout compatibility and package dimensions (DO-41) for direct substitution. Check if alternative suppliers offer RoHS-compliant versions if environmental regulations apply.