1N5242A/TR

Single Zener Diodes Overview

The Microchip Technology 1N5242A/TR is a 500 mW glass axial-lead Zener diode in the DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 12 V with a ±10% tolerance, tested at a current of 20 mA. The device features a maximum reverse leakage current of 10 µA at 9.1 V and a maximum Zener impedance of 1.0 Ohm at 0.25 mA. It operates within a temperature range of -65°C to +175°C and includes an internal bond option.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for standard through-hole applications
• Includes internal bonds for enhanced mechanical reliability

Single Zener Diodes Applications

• Voltage reference circuits requiring precise potential levels
• Overvoltage protection stages in electronic systems
• General-purpose voltage regulation tasks

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to tape-and-reel packaging as specified by the manufacturer's documentation. Confirm the specific suffix 'A' indicates the required ±10% voltage tolerance. Ensure the component meets RoHS compliance requirements if applicable to the assembly process. Cross-reference the datasheet revision date to ensure electrical characteristics match the production batch.

Single Zener Diodes Selection Notes

Select this component when a 12 V breakdown voltage with moderate precision is required. The DO-35 package suits designs needing robust axial leads. Verify thermal derating curves against the expected power dissipation in the final application. Consider the positive temperature coefficient inherent to this voltage level for stability analysis.

Single Zener Diodes Part Context

This part belongs to the 1N5221 through 1N5281B series of 0.5 W Zener Voltage Regulators. The series offers a wide selection of voltages from 2.4 V to 200 V. Variants are available with different tolerances and screening levels. The 1N5242A represents the 12 V step within this standardized JEDEC registered lineup.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in the MLL5221 to MLL5281B series using the DO-213AA MELF style package. These provide similar electrical characteristics in a compact form factor suitable for automated surface mount assembly processes.