1N4748A-TAP

Overview

The Vishay 1N4748A-TAP is a silicon planar power Zener diode in the DO-41 (DO-204AL) axial package. It provides a nominal Zener voltage of 22 V with a standard tolerance of ±5%. The device dissipates up to 1300 mW at thermal equilibrium and operates within a junction temperature range of -65 °C to +175 °C. Electrical characteristics include a test current of 11.5 mA, a maximum reverse leakage current of 5 µA at 1 V, and a dynamic resistance of 23 Ω at the test current.

Feature Summary

• Utilizes silicon planar technology for high power rating applications
• Hermetically sealed glass passivated construction for stability
• Standardized ±5% Zener voltage tolerance

Applications

• Voltage stabilization circuits
• High power clipping circuits

Procurement Notes

Verify that the ordering suffix '-TAP' corresponds to the specific taped unit packaging configuration defined by Vishay. Confirm compliance with RoHS directives and material categorization standards as outlined in the official datasheet before finalizing procurement specifications.

Selection Notes

Select this component when a 22 V reference is required in through-hole designs. Ensure the circuit can accommodate the specified surge current and that lead temperatures are maintained near ambient to achieve the rated 1300 mW dissipation capability without exceeding the 175 °C junction limit.

Part Context

This part belongs to the Vishay 1N4728A to 1N4761A series of single Zener diodes. The series covers a broad voltage range from 3.3 V to 75 V, all sharing the same DO-41 glass axial package and standardized electrical testing parameters for consistent performance across different voltage ratings.

Replacement Considerations

Cross-reference other manufacturers' 1N4748A equivalents to ensure identical 22 V nominal voltage, 1 W power rating, and DO-41 package compatibility. Verify that substitute parts meet the same ±5% tolerance and thermal requirements.

FAQ

What is the maximum surge current for the 1N4748A?

The maximum surge current (IZM) for the 1N4748A is 41 mA.

How does the power dissipation change with temperature?

Power dissipation must be derated above 50 °C to prevent exceeding the maximum junction temperature of 175 °C.