1N4120-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4120-1/TR is a 500 mW metallurgically bonded glass Zener diode in the axial-lead DO-35 (DO-204AH) package. It provides a nominal Zener voltage of 30 V with a standard tolerance of ±5%. The device operates within a junction and storage temperature range of -65°C to +175°C. Electrical characteristics include a maximum Zener impedance of 0.01 Ohms, a reverse current of 22.8 µA at 27.4 V, and a noise density of 40 µV/√Hz. The 'TR' suffix indicates tape and reel packaging.

Single Zener Diodes Feature Summary

• Features an internal metallurgical bond for enhanced reliability.
• Qualified per MIL-PRF-19500/435 for high-reliability applications.
• Provides stable voltage regulation across broad ranges of current and temperature.
• Offers minimal capacitance suitable for sensitive circuitry.

Single Zener Diodes Applications

• Voltage regulation in high-reliability electronic systems.
• Reference voltage sources in precision measurement equipment.
• Overvoltage protection circuits requiring radiation hardness.

Single Zener Diodes Procurement Notes

Verify that the specific order matches the JEDEC registered part number 1N4120-1. Confirm the presence of the TR suffix for tape and reel packaging requirements. Ensure compatibility with MIL-PRF-19500/435 qualification levels if mission-critical performance is required. Check RoHS compliance status as it varies by grade.

Single Zener Diodes Selection Notes

Select this component when a 30 V reference with tight impedance is needed. Consider the ±5% tolerance for standard applications. Evaluate the 500 mW power dissipation against thermal derating curves for ambient conditions. Verify lead length requirements for through-hole mounting on FR4 PCBs.

Single Zener Diodes Part Context

This device belongs to the 1N4099-1 through 1N4135-1 series of 500 mW Zener diodes. These components are designed for axial-lead mounting and offer voltages from 1.8 to 100 V. The series supports various reliability levels including JAN, JANTX, JANTXV, and JANS.

Single Zener Diodes Replacement Considerations

Equivalent parts within the same series include 1N4121-1, 1N4122-1, and 1N4123-1. Surface mount alternatives are available in the 1N4614UR-1 through 1N4627UR-1 series using the DO-213AA package.