1N4916/TR

Overview

The Microchip Technology 1N4916/TR is a single Zener diode housed in a DO-35 (DO-204AH) axial through-hole package. It features a nominal Zener voltage of 19.2 V with a tolerance of ±5%. The device has a maximum power dissipation of 500 mW and operates with a test current of 500 µA. It is temperature compensated for stability. The component measures 7.62 mm in length and 2.718 mm in diameter, weighing approximately 200 mg.

Feature Summary

• Temperature compensated design for stable voltage regulation across operating ranges
• Single Zener configuration in a standard axial leaded package
• High precision voltage tolerance for reliable reference applications

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in low-power electronic systems
• Clamping applications in signal conditioning paths

Procurement Notes

Verify the specific suffix '/TR' indicates tape and reel packaging when sourcing. Confirm RoHS compliance status as some listings indicate non-RoHS variants exist for this part number. Ensure the manufacturer is identified as Microchip Technology to avoid counterfeit components. Check datasheet revisions for any updates to electrical characteristics or mechanical dimensions before finalizing procurement specifications.

Selection Notes

Select this component when a precise 19.2 V Zener reference is needed in a small axial package. Consider the 500 mW power rating for thermal management in enclosed spaces. Verify that the ±5% tolerance meets the circuit requirements compared to tighter tolerance alternatives. Ensure the through-hole mounting style aligns with the PCB layout constraints.

Part Context

This part belongs to the 1N4916 series of Zener diodes manufactured by Microchip Technology. It is designed for general-purpose voltage regulation and protection tasks. The DO-35 package provides a compact form factor suitable for dense circuit boards. The temperature compensation feature distinguishes it from standard Zener diodes by reducing voltage drift with temperature changes.

Replacement Considerations

Direct substitutes must match the 19.2 V Zener voltage, 500 mW power rating, and DO-35 package. Verify temperature compensation characteristics if used in precision references. Cross-reference with other manufacturers offering equivalent axial Zener diodes ensuring identical electrical parameters and pinout compatibility.

FAQ

What is the temperature coefficient characteristic of the 1N4916/TR?

The 1N4916/TR is specified as a temperature compensated Zener diode, meaning its voltage drift over temperature is minimized compared to standard Zener diodes.

What is the test current for this Zener diode?

The test current for the 1N4916/TR is 500 µA, which is the current at which the nominal Zener voltage of 19.2 V is measured.