1N4733UR-1/TR

Single Zener Diodes Overview

The Microchip Technology 1N4733UR-1/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB package. It provides a nominal Zener voltage of 5.1 V with a standard tolerance of +/- 5%. The device operates within a temperature range of -65°C to +175°C and features a maximum reverse current of 10 µA at 1 V. Electrical characteristics include a test current of 49 mA, a dynamic impedance of 7 Ohms at IZT, and a maximum regulator current of 178 mA at TA = 50°C.

Single Zener Diodes Feature Summary

• Hermetically sealed glass MELF construction for high reliability applications
• Surface mount design ideal for high density mounting requirements
• Inherently radiation hard per MicroNote 050
• Compatible with MIL-PRF-19500 screening options

Single Zener Diodes Applications

• Voltage regulation over broad operating current and temperature ranges
• High density electronic circuit assembly
• Applications requiring low parasitic performance
• High reliability systems specified by source control drawings

Single Zener Diodes Procurement Notes

Verify that the ordering suffix matches the required specifications. Confirm the presence of the 'TR' suffix indicates tape and reel packaging. Ensure the part number aligns with the specific voltage tolerance and screening level needed for the application. Cross-reference the manufacturer's documentation for any updates regarding RoHS compliance or alternate naming conventions.

Single Zener Diodes Selection Notes

Select this component when a 1.0 W power dissipation rating in a surface mount form factor is required. The DO-213AB package offers an alternative to axial leads while maintaining electrical equivalence to the JEDEC registered 1N4733A series. Consider the thermal resistance values for PCB layout planning to ensure operation within the specified temperature limits.

Single Zener Diodes Part Context

This device belongs to the 1N4728AUR through 1N4764AUR series of surface mount glass Zener diodes. It serves as the surface mount equivalent to the traditional DO-41 axial leaded 1N4733A diode. The series covers a wide voltage range from 3.3 V to 100 V, providing flexibility for various voltage regulation needs in compact designs.

Single Zener Diodes Replacement Considerations

The 1N4733A (DO-41) is the direct axial lead equivalent. Surface mount alternatives include the MLL4733A designation. Verify pinout compatibility and thermal management requirements when transitioning between package types.