1N5228B

Single Zener Diodes Overview

The onsemi 1N5228B is a single silicon Zener diode with a nominal voltage of 3.9 V and a tolerance of ±5%. It operates within a junction temperature range of −65 °C to +200 °C and dissipates up to 500 mW at 25 °C, derating by 4.0 mW/°C above this threshold. The device features a maximum dynamic impedance of 23 Ω at a test current of 20 mA and a reverse leakage current of 10 μA at 1.0 V. It utilizes an axial lead DO-35 (Case 017AG) glass package.

Single Zener Diodes Feature Summary

• Hermetically sealed glass compression bonded construction for corrosion resistance
• Wide operating junction temperature range extending to +200 °C
• Lead terminals solderable per MIL-STD-208

Single Zener Diodes Applications

• Voltage regulation in electronic circuits
• Voltage reference applications
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm shipping format. Standard bulk packaging contains 5000 units per bag, while tape and reel options are available for automated assembly. Confirm RoHS compliance status as standard versions are lead-free and halide-free, whereas military variants may differ. Ensure the requested part number matches the exact electrical characteristics required for the design.

Single Zener Diodes Selection Notes

Select this component when a precise 3.9 V reference is needed with tight tolerance requirements. The low dynamic impedance supports stable regulation under varying load conditions. The wide thermal operating range allows deployment in harsh environments without additional cooling measures. Verify that the power dissipation limits align with the ambient temperature expectations of the final enclosure design.

Single Zener Diodes Part Context

This device belongs to the 1N5221B through 1N5252B series of 500 mW Zener Voltage Regulators. The series provides a broad selection of voltages from 2.4 V to 24.0 V in standard 5% tolerances. These components utilize JEDEC registered DO-35 packages and are designed for general-purpose voltage regulation tasks across various industrial and commercial electronics.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5228B equivalents to ensure pinout and package compatibility. Verify that substitute parts meet the same 500 mW power dissipation and ±5% voltage tolerance specifications. Check if alternative suppliers offer hermetically sealed versions if environmental sealing is critical for the application.