1N5226B

Single Zener Diodes Overview

The onsemi 1N5226B is a silicon unidirectional Zener diode housed in a hermetically sealed glass DO-35 (Case 017AG) axial lead package. It provides a nominal Zener voltage of 3.3 V with a tolerance range of 3.135 V to 3.465 V at a test current of 20 mA. The device supports a maximum power dissipation of 500 mW and features a dynamic impedance of 28 Ω at the test current. Electrical characteristics include a maximum reverse leakage current of 25 µA at 1.0 V, a temperature coefficient of -0.070 %/°C, and a forward voltage of 1.2 V maximum at 200 mA.

Single Zener Diodes Feature Summary

• Hermetically sealed glass construction for reliable operation
• Low dynamic impedance for stable voltage regulation
• Negative temperature coefficient suitable for low-voltage applications

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Single Zener Diodes Procurement Notes

Verify that the ordered component matches the specific onsemi datasheet revision and ordering information. Confirm the package type is the standard axial lead variant unless a tape and reel suffix is explicitly required. Ensure compliance with RoHS and halide-free specifications if mandated by the application requirements.

Single Zener Diodes Selection Notes

Select this component when a precise 3.3 V reference is needed within a small axial footprint. Consider the negative temperature coefficient for thermal stability analysis. Evaluate the 500 mW power dissipation limit against the expected operating conditions to ensure adequate thermal headroom.

Single Zener Diodes Part Context

This part belongs to the 1N5221B through 1N5252B series of 0.5 W Zener diodes manufactured by onsemi. The series covers a wide voltage range from 2.4 V to 24 V, all utilizing the same DO-35 glass axial package. The 1N5226B specifically addresses the lower end of the voltage spectrum where tunneling effects dominate conduction.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5226B equivalents to verify pinout compatibility and electrical tolerances. Ensure replacement parts meet the same hermetic sealing and power dissipation standards.