1N5221B

Single Zener Diodes Overview

The onsemi 1N5221B is a single silicon Zener diode housed in an axial lead DO-35 glass package. It provides a nominal voltage of 2.4 V with a tolerance range of 2.280 V to 2.52 V at a test current of 20 mA. The device supports a maximum power dissipation of 500 mW and features a dynamic impedance of 30 Ω. It operates within a junction temperature range of −65°C to +200°C, with a storage temperature range extending up to +200°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for environmental protection
• Sharp reverse characteristic for precise voltage regulation
• Low reverse leakage current levels
• Standardized JEDEC case outline for compatibility

Single Zener Diodes Applications

• Voltage stabilization circuits
• Reference voltage generation
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm shipping format. The standard part number typically ships in bulk bags containing 5000 units, while tape and reel options are available for automated assembly lines. Ensure compliance with RoHS and halide-free requirements as specified in the final product designation.

Single Zener Diodes Selection Notes

Select this component when a low nominal voltage reference near 2.4 V is required in a through-hole configuration. Consider the negative temperature coefficient inherent to sub-5V Zener diodes for thermal stability analysis. Verify that the 500 mW power rating accommodates the expected operating current and ambient temperature conditions without exceeding derating limits.

Single Zener Diodes Part Context

This device belongs to the 1N5221B through 1N5252B series of 500 mW Zener diodes manufactured by onsemi. The series covers a wide voltage selection from 2.4 V to 24 V, all utilizing the same DO-35 axial lead glass package. These components are designed for general-purpose voltage regulation applications requiring reliable performance in compact circuit designs.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5221B equivalents such as those from Central Semiconductor or Vishay. Verify that substitute parts match the 2.4 V nominal voltage, 5% tolerance, and DO-35 package dimensions to ensure mechanical and electrical compatibility.