1N4738UR-1/TR

Overview

The Microchip Technology 1N4738UR-1/TR is a surface mountable 1.0 W glass Zener diode in the DO-213AB package. It provides an 8.2 V nominal Zener voltage with a standard ±5% tolerance. The device operates within a temperature range of -65°C to +175°C and features hermetically sealed construction for high reliability.

Feature Summary

• Hermetically sealed glass MELF package
• Surface mount design for high density applications
• Inherently radiation hard per MicroNote 050

Applications

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

Procurement Notes

Verify that the specific ordering suffix matches the required tolerance and screening level. Confirm RoHS compliance status if environmental regulations apply. Ensure the tape and reel packaging aligns with automated placement equipment specifications before finalizing procurement orders.

Selection Notes

Select this component when a 1.0 W power rating and 8.2 V regulation are required in a surface mount form factor. Consider the DO-213AB outline for space-constrained designs. Evaluate thermal derating curves for ambient temperature conditions exceeding 45°C on FR4 PCBs.

Part Context

This part belongs to the 1N4728AUR through 1N4764AUR series, which serves as the surface mount equivalent to the JEDEC registered 1N4728A through 1N4764A axial leaded series. The series covers Zener voltages from 3.3 V to 100 V.

Replacement Considerations

Electrically similar to the JEDEC registered 1N4728 thru 1N4764 zener series.