1N5229B

Single Zener Diodes Overview

The onsemi 1N5229B is a single-channel general-purpose Zener diode housed in an axial lead DO-35 glass package. It provides a nominal Zener voltage of 4.3 V with a ±5% tolerance at a test current of 20 mA. The device dissipates up to 500 mW and operates within a junction temperature range of -65°C to +200°C. Key electrical characteristics include a maximum Zener impedance of 22 Ω, a reverse leakage current of 5.0 μA at 1.0 V, and a near-zero voltage temperature coefficient of ±0.055%/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through avalanche breakdown mechanisms
• Features a hermetically sealed glass axial lead package for environmental protection
• Maintains high thermal stability across a wide operating temperature range

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• Clamping applications for transient suppression

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix (e.g., bulk bag versus tape and reel) against the manufacturer's official documentation before purchasing. Confirm that the component meets all required RoHS and halogen-free standards for your manufacturing process. Ensure the selected packaging format aligns with your automated assembly equipment specifications.

Single Zener Diodes Selection Notes

Select this component when a 4.3 V reference point is required with tight tolerance constraints. Evaluate the 500 mW power dissipation limit to ensure adequate heat sinking or airflow in the final design. Consider the low reverse leakage current for high-impedance circuit applications where minimal current draw is critical.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5252B series of Zener diodes manufactured by onsemi. The series utilizes a standardized DO-35 axial lead glass package. All devices in this family share identical physical dimensions and mounting requirements while varying primarily in their specified Zener voltage ratings.

Single Zener Diodes Replacement Considerations

Cross-reference other manufacturers' 1N5229B equivalents to verify matching pinout, package dimensions, and electrical tolerances. Ensure substitute components meet the same 500 mW power dissipation rating and operate within the specified -65°C to +200°C temperature range.