1N5249/TR

Single Zener Diodes Overview

The Microchip Technology 1N5249/TR is a single Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 19 V with a tolerance of ±5%. The device supports a maximum power dissipation of 500 mW and operates within a temperature range of -65°C to +200°C. Key electrical characteristics include a maximum reverse leakage current of 100 nA at 14 V, a forward voltage of 1.2 V at 200 mA, and a maximum Zener impedance of 23 Ohms. It utilizes the DO-204AH (DO-35) axial through-hole package.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation via Zener breakdown mechanism
• Capable of handling high junction temperatures up to 200°C
• Offers low reverse leakage current for efficient standby operation

Single Zener Diodes Applications

• Voltage reference circuits
• Overvoltage protection
• Biasing networks in analog electronics

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source as the 1N5249 part number has been associated with multiple producers including onsemi and Microchip Technology. Confirm that the /TR suffix indicates reel packaging if required for automated assembly processes. Ensure the component meets RoHS and REACH compliance standards relevant to the target market before finalizing procurement orders.

Single Zener Diodes Selection Notes

Select this component when a 19 V regulation point is required in a through-hole design. Consider the 500 mW power rating against expected circuit dissipation. Evaluate the ±5% voltage tolerance against circuit precision requirements. Verify that the DO-35 package dimensions fit the available PCB real estate and mounting constraints.

Single Zener Diodes Part Context

This component belongs to the standard 1N52xx series of glass-passivated Zener diodes. These devices are widely used in general-purpose electronic equipment requiring reliable voltage clamping or reference levels. The 1N5249 variant specifically targets the 19 V segment of this extensive product family.

Single Zener Diodes Replacement Considerations

Direct substitutes include Central Semiconductor Corp 1N5249B TR PBFREE. Similar alternatives from Microchip Technology include 1N5249A and 1N5539B, though specifications may vary slightly.