1N4619

Single Zener Diodes Overview

The Microchip Technology 1N4619 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 3 V with a tolerance of 5%. The device operates in the through-hole DO-35 package and supports a DC power dissipation of 500 mW at +50°C, with derating required above this temperature. Electrical characteristics include a maximum reverse leakage current of 400 nA and a Zener impedance of 1600 ohms. The component is tested at a current of 250 uA and functions within an operating temperature range from -65°C to +175°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation utilizing a single Zener junction structure.
• Capable of operation across extended industrial temperature ranges up to +175°C.
• Constructed with silicon material for reliable unidirectional performance.

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection stages
• General-purpose voltage regulation

Single Zener Diodes Procurement Notes

Verify the specific suffix designation when ordering, as variants such as JAN or UR indicate distinct packaging, lead finish, or qualification standards. Confirm RoHS compliance status directly with the manufacturer, as military-grade versions may not adhere to standard environmental directives. Ensure the selected package matches the intended PCB layout requirements before finalizing procurement.

Single Zener Diodes Selection Notes

Select this component for designs requiring a precise 3 V reference point with moderate power handling capabilities. Evaluate the thermal environment to ensure power derating guidelines are met during continuous operation. Consider the high Zener impedance value when designing for low-noise applications, as it may influence circuit stability under varying load conditions.

Single Zener Diodes Part Context

This part belongs to the standard 1N46xx series of Zener diodes manufactured by Microchip Technology. The series offers various voltage options within a consistent physical form factor, facilitating design flexibility. The 1N4619 specifically addresses the need for low-voltage regulation in compact through-hole assemblies commonly found in legacy and robust electronic systems.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N4619 equivalents that match the 3 V Zener voltage and DO-35 package dimensions. Verify that alternative parts meet the same 5% voltage tolerance and 500 mW power dissipation ratings to maintain circuit integrity without redesign.