1N4748A B0G

Overview

The 1N4748A B0G is a silicon unidirectional Zener diode manufactured by Taiwan Semiconductor Corporation. It features a nominal Zener voltage of 22 V with a tolerance of 5%. The device is designed for through-hole mounting in a DO-41 (DO-204AL) axial lead glass package. It provides a maximum power dissipation of 1 W and operates within a temperature range from -55 °C to +150 °C. Key electrical characteristics include a maximum reverse leakage current of 5 µA and a Zener impedance of 110 Ohms at a test current of 4.5 mA.

Feature Summary

• Hermetically sealed glass passivated junction construction
• High thermal stability across extended operating temperatures
• Low leakage current for precise voltage regulation

Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Procurement Notes

Verify the specific suffix 'B0G' against official Taiwan Semiconductor documentation to confirm exact packaging, tape-and-reel specifications, or compliance status. Ensure the component matches the required RoHS and REACH standards for your assembly process. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and supply chain integrity before procurement.

Selection Notes

Select this component when a stable 22 V reference is required in high-power environments. The DO-41 package supports higher power dissipation compared to smaller surface-mount alternatives. Consider the 110 Ohm impedance value for dynamic load requirements. Verify that the 1 W power rating aligns with the thermal management capabilities of the target circuit board design.

Part Context

This component belongs to the standard 1N47xx series of Zener diodes, widely used for general-purpose voltage regulation. The 'A' suffix typically denotes a 5% tolerance band. As a through-hole device, it is suitable for prototyping and industrial equipment where mechanical robustness is prioritized over miniaturization.

Replacement Considerations

Compatible substitutes include the 1N4748A from other manufacturers such as ON Semiconductor or Central Semiconductor. Ensure replacement parts maintain the same DO-41 package, 22 V nominal voltage, and 1 W power rating. Verify that any alternative meets the same thermal and electrical performance criteria.