1N5240B

Single Zener Diodes Overview

The onsemi 1N5240B is a single silicon Zener diode with a nominal voltage of 10.0 V and a tolerance of ±5%. It operates within a power dissipation range up to 500 mW at 25°C, derating by 4.0 mW/°C above this temperature. The device features a maximum Zener impedance of 17 Ω at a test current of 20 mA and a reverse leakage current of 3.0 µA at 8.0 V. It utilizes an axial lead DO-35 package (Case 017AG) and supports an operating junction temperature range from −65°C to +200°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation using a unidirectional silicon Zener structure housed in a hermetically sealed glass axial-lead package.
• Maintains thermal stability across a wide operating junction temperature range extending up to 200°C.
• Offers precise voltage tolerance for consistent performance in standard voltage reference applications.

Single Zener Diodes Applications

• Voltage regulation circuits
• Voltage reference sources
• Overvoltage protection

Single Zener Diodes Procurement Notes

Verify the specific ordering suffix against the manufacturer's documentation to confirm shipping format, as bulk bags and tape-and-reel options exist for this part number. Ensure compliance with RoHS and halide-free requirements if specified for the project. Confirm that the selected variant matches the required mechanical dimensions and marking codes for the intended assembly process.

Single Zener Diodes Selection Notes

Select this component when a 10 V reference with ±5% accuracy is required in a through-hole configuration. Consider the 500 mW power limit and the need for thermal derating above 50°C during circuit design. Evaluate the 17 Ω impedance value to ensure it meets the ripple rejection requirements of the target application.

Single Zener Diodes Part Context

This device belongs to the 1N5221B through 1N5252B series of 0.5 W Zener diodes manufactured by onsemi. The series provides a broad selection of voltages ranging from 2.4 V to 24.0 V in standard 5% tolerances. These components are designed for general-purpose voltage regulation tasks requiring reliable performance in axial-lead packages.

Single Zener Diodes Replacement Considerations

Direct substitutes include the 1N5240BT-11A from ROHM and the MMSZ5240B-7 from Diodes Incorporated. Verify pinout compatibility and electrical parameter alignment before substitution.