1N4748AHB0G

Overview

The 1N4748AHB0G 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 designed for through-hole mounting in the DO-204AL (DO-41) axial package. It has a power dissipation rating of 1 W and operates within a temperature range of -65°C to +175°C. Key electrical characteristics include a maximum reverse leakage current of 100 nA, a Zener impedance of 23 Ohms at a test current of 11.5 mA, and a forward voltage of 1.2 V at 200 mA.

Feature Summary

• Provides stable voltage regulation using a single unidirectional Zener junction.
• Constructed with a glass-passivated silicon die for enhanced reliability.
• Capable of handling high operating temperatures up to 175°C.
• Utilizes an axial leaded package suitable for standard through-hole PCB assembly.

Applications

• Voltage reference circuits requiring precise potential levels.
• Overvoltage protection stages in power supply inputs.
• Clamping applications to limit signal amplitude peaks.
• Biasing networks for transistor amplifier stages.

Procurement Notes

Verify RoHS compliance status as specific suffixes may vary. Confirm package dimensions against DO-204AL standards before integration. Ensure thermal management aligns with the 1 W dissipation rating under expected load conditions. Cross-reference manufacturer datasheets for exact testing parameters.

Selection Notes

Select this component when a 22 V regulation point is required in axial packages. Consider the 5% voltage tolerance for precision requirements. Evaluate thermal derating curves if ambient temperatures exceed standard limits. Compare impedance values against circuit sensitivity needs for noise performance.

Part Context

This part belongs to the standard 1N47xx series of Zener diodes widely used in general electronics. It serves as a fundamental passive component for voltage control. The HB0G suffix typically indicates specific packaging or compliance attributes defined by the manufacturer. It is a legacy design available from multiple semiconductor vendors.

Replacement Considerations

Direct substitutes include parts with identical 22 V, 1 W, and DO-41 specifications. Verify pinout compatibility and thermal resistance values. Check for equivalent Zener impedance and leakage current ratings to ensure circuit stability is maintained during replacement.