1N4737ADO41E3

Overview

The Microsemi Corporation 1N4737ADO41E3 is a silicon Zener diode housed in a DO-204AL (DO-41) axial leaded package. It features a nominal Zener voltage of 7.5V with a tolerance of ±5% and a maximum power dissipation of 1W. The device exhibits a maximum dynamic impedance of 4Ω at the test current. It operates within a temperature range of -65°C to +175°C and is RoHS compliant.

Feature Summary

• Hermetically sealed glass encapsulation for enhanced environmental protection
• High thermal stability supporting operation up to 175°C junction temperature
• Flexible axial-lead mounting terminals suitable for through-hole applications

Applications

• Voltage regulation circuits requiring stable reference levels
• Overvoltage protection in electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify that the ordering suffix 'DO41' correctly identifies the specific DO-204AL package variant. Confirm RoHS compliance status via the 'e3' suffix documentation. Ensure the supplier provides traceability data consistent with Microsemi manufacturing standards. Cross-reference the part number against official distributor catalogs to confirm availability and authenticity before procurement.

Selection Notes

Select this component when a 7.5V regulation point is required in a high-reliability environment. The DO-41 package offers robust mechanical handling compared to surface mount options. Consider the 1W power rating for steady-state dissipation requirements. Evaluate the 4Ω dynamic impedance for noise-sensitive applications where tighter regulation may be necessary.

Part Context

This part belongs to the 1N4728A through 1N4764AG series of 1-watt Zener diodes manufactured by Microsemi. The series provides a wide selection of voltages from 3.3V to 100V. The 'G' suffix indicates hermetic sealing, while 'DO41' specifies the JEDEC DO-204AL package style. This family is designed for general-purpose and military-grade applications.

Replacement Considerations

Equivalent parts include other manufacturers' 1N4737 variants in the DO-41 package. Verify pinout compatibility and thermal characteristics. Ensure replacement devices meet the same 1W power dissipation and 7.5V Zener voltage specifications.