1N5231B

Single Zener Diodes Overview

The onsemi 1N5231B is a Zener diode housed in an axial lead Case 017AG package. It features a nominal Zener voltage of 5.1 V with a tolerance range of 4.845 V to 5.355 V at a test current of 20 mA. The device supports a maximum power dissipation of 500 mW and operates within a junction temperature range of -65°C to +200°C. Key electrical parameters include a Zener impedance of 17 ohms at the test current, a knee impedance of 5.0 ohms at 0.25 mA, and a reverse leakage current of 2.0 µA at 2.0 V. The temperature coefficient is ±0.030 %/°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation through precise Zener breakdown characteristics.
• Constructed with a hermetically sealed glass package for environmental durability.
• Capable of handling high operating junction temperatures up to 200°C.

Single Zener Diodes Applications

• Voltage reference circuits requiring stable DC levels.
• Overvoltage protection stages in electronic systems.
• Clamping applications for transient voltage suppression.

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix when purchasing. The standard bulk bag variant is designated without a trailing letter, while the tape and reel variant includes a TR suffix. Confirm that the required packaging format aligns with your assembly equipment specifications before placing orders to ensure compatibility with automated placement processes or manual insertion workflows.

Single Zener Diodes Selection Notes

Select this component when a 5.1 V regulation point is required with moderate power handling capabilities. The low temperature coefficient near 5 V makes it suitable for precision applications where thermal stability is critical. Ensure the circuit design accounts for the 500 mW power limit and derating requirements above 50°C to maintain reliability under varying thermal conditions.

Single Zener Diodes Part Context

This device belongs to the 1N5221B through 1N5252B series of Zener diodes manufactured by onsemi. The series covers a wide voltage range from 2.4 V to 24 V, all sharing the same axial lead Case 017AG mechanical outline. This family provides standardized performance metrics and packaging for general-purpose voltage regulation tasks across various industrial and consumer electronics sectors.

Single Zener Diodes Replacement Considerations

Cross-reference with other manufacturers' 1N5231B equivalents to verify pinout compatibility and electrical parameter tolerances. Ensure substitute parts meet the same 500 mW power dissipation rating and axial lead dimensions to fit existing board layouts without modification.