1N4120-1

Single Zener Diodes Overview

The Microchip Technology 1N4120-1 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 200 Ohms, a reverse current of 40 µA, and a noise density of 40 µV/√Hz at the test current of 250 µA.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for high reliability
• Qualified per MIL-PRF-19500/435 standards
• Hermetically sealed glass axial-lead package

Single Zener Diodes Applications

• High-reliability voltage regulation circuits
• Military and aerospace electronic systems
• Temperature-compensated reference designs

Single Zener Diodes Procurement Notes

Verify that the specific ordering suffix matches the required reliability level, as the base part number covers commercial through JANS qualifications. Confirm RoHS compliance status if environmental regulations apply, noting that certain finishes are available only on commercial grades. Ensure the procurement documentation explicitly references the JEDEC registered type number and the applicable military qualification level.

Single Zener Diodes Selection Notes

Select this component when a stable 30 V reference is required in harsh environments. The wide operating temperature range supports applications from -65 °C to +175 °C. Consider the low capacitance and radiation hardness for sensitive or exposed circuitry. Verify that the power dissipation requirements align with the thermal derating curves provided in the datasheet.

Single Zener Diodes Part Context

This device belongs to the 1N4099-1 through 1N4135-1 series of 500 mW Zener diodes manufactured by Microchip Technology. The series offers voltages ranging from 1.8 V to 100 V with various tolerance options. These components are designed for robust performance in demanding industrial and defense applications requiring precise voltage regulation.

Single Zener Diodes Replacement Considerations

Equivalent parts include JAN1N4120-1, JANTX1N4120-1, and JANTXV1N4120-1. These variants share identical electrical specifications but differ in their qualification levels and manufacturing lot traceability according to MIL-PRF-19500/435.