1N4748AUR/TR

Overview

The Microchip Technology 1N4748A/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB MELF package. It features a nominal Zener voltage of 22 V with a standard tolerance of +/- 5%. The device operates within a temperature range of -65°C to +175°C and includes a tape and reel packaging option indicated by the TR suffix.

Feature Summary

• Hermetically sealed glass MELF package for high reliability
• Surface mount design suitable for high density applications
• Electrically equivalent to JEDEC registered 1N4748A axial leaded series

Applications

• Voltage regulation in high density circuitry
• High reliability applications requiring source control drawings
• Low parasitic requirement circuits

Procurement Notes

Verify the specific manufacturer origin, as this part number appears in catalogs from both Microsemi and Microchip Technology. Confirm RoHS compliance status and ensure the ordering suffix matches the required tape and reel quantity specifications provided in the official datasheet.

Selection Notes

Select this component when a surface mount solution is required that maintains electrical equivalence to the traditional DO-41 axial leaded 1N4748A. Ensure the application environment supports the specified operating temperature range and power dissipation limits defined for the DO-213AB package.

Part Context

This device belongs to the 1N4728AUR through 1N4764AUR series of surface mount Zener diodes. It serves as the SMD counterpart to the widely used 1N4728A through 1N4764A registration in the DO-41 package, offering similar performance in a compact form factor.

Replacement Considerations

Direct replacement options include the 1N4748A in the DO-41 axial package or other equivalents within the 1N47xxA series. Verify pinout compatibility and thermal management requirements when substituting between package types.