1N5221B-T

Single Zener Diodes Overview

The Vishay 1N5221B-T is a silicon planar power Zener diode in the DO-35 axial package. It provides a nominal Zener voltage of 2.4 V with a standard tolerance of ±5%. The device dissipates up to 500 mW at thermal equilibrium and operates within a junction temperature range of -65 °C to +175 °C. Electrical characteristics include a maximum reverse leakage current of 100 µA at 1 V, a dynamic resistance of 30 Ω at 20 mA, and a typical negative temperature coefficient of -0.085 %/K.

Single Zener Diodes Feature Summary

• Utilizes silicon planar technology for robust voltage regulation
• Features a glass DO-35 axial leaded package suitable for through-hole mounting
• Complies with RoHS Directive 2002/95/EC and WEEE 2002/96/EC standards

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify that the ordering code includes the 'T' suffix to confirm taped packaging. Confirm the specific batch revision against the manufacturer's datasheet document number 85588. Ensure compliance requirements match project specifications regarding material categorization and environmental directives.

Single Zener Diodes Selection Notes

Select this component when a low-voltage reference near 2.4 V is required. The negative temperature coefficient must be accounted for in precision designs. Verify that the 500 mW power dissipation rating meets the circuit's thermal load requirements under expected ambient conditions.

Single Zener Diodes Part Context

This part belongs to the 1N5221 to 1N5267 series of small signal Zener diodes manufactured by Vishay Semiconductors. The series covers a wide voltage range from 2.4 V to 75 V. Variants are available in different packages including MiniMELF, SOT-23, and SOD-123.

Single Zener Diodes Replacement Considerations

Direct substitutes within the same Vishay family include 1N5221B-TR (reel) or 1N5221B-TAP (ammopack). Cross-manufacturer equivalents require matching the 2.4 V nominal voltage, 500 mW power rating, and DO-35 package dimensions.