SMBG4739AE3/TR13

Single Zener Diodes Overview

The SMBG4739AE3/TR13 is a single silicon Zener diode manufactured by Microsemi Corporation. It operates in the DO-215AA (SMBG) surface-mount package with two pins. The device provides a nominal Zener voltage of 9.1 V with a tolerance of 5%. It features a maximum power dissipation rating of 1.25 W and maintains a low thermal resistance profile suitable for surface-mount applications. The component is RoHS compliant, indicated by the e3 suffix, and is supplied in reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation within a 9.1 V nominal specification
• Utilizes a plastic encapsulated DO-215AA surface-mount package design
• Offers high reliability through JEDEC registration standards

Single Zener Diodes Applications

• Voltage regulation circuits
• Protection against overvoltage conditions
• Reference voltage generation

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source, as Microsemi's semiconductor division was acquired by Microchip Technology. Confirm that the part number corresponds to the correct 1.25 W SMBG variant rather than the similar SMBJ or higher-power SMBJ53xx series. Ensure the e3 suffix indicates lead-free compliance and check current availability status, as older Microsemi inventory may be subject to discontinuation notices.

Single Zener Diodes Selection Notes

Select this component when a 9.1 V regulation point is required in a compact surface-mount layout. The DO-215AA package offers greater mounting density compared to axial leads while maintaining robust solder connection visibility due to its gull-wing design. Consider the 5% tolerance for standard regulation needs where tighter precision is not critical.

Single Zener Diodes Part Context

This device belongs to the SMBG4728A through SMBG4764A series of 2.0 W rated Zener diodes, though individual units are often characterized at lower power levels like 1.25 W depending on the specific datasheet revision. These parts serve as surface-mount equivalents to the traditional 1N4728 through 1N4764A axial diodes, providing identical electrical characteristics in a modern footprint.