1N5337B/TR12

Single Zener Diodes Overview

The Microsemi Corporation 1N5337B/TR12 is a silicon Zener diode with a nominal voltage of 4.7V and a ±5% tolerance. It operates within a power dissipation range up to 5.0 watts at 25°C, featuring a maximum reverse current of 10 µA and a dynamic impedance of 2.0 ohms. The device utilizes an axial-lead T-18 plastic package and supports tape-and-reel packaging via the TR suffix.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers flexible axial-lead mounting terminals
• Features minimal changes in voltage versus current as specified by voltage regulation parameters

Single Zener Diodes Applications

• Voltage regulation circuits requiring 4.7V reference
• Power supply protection against overvoltage conditions
• General-purpose clamping applications in electronic systems

Single Zener Diodes Procurement Notes

Verify that the part number includes the TR suffix for tape-and-reel configuration. Confirm compliance requirements such as RoHS status if applicable, noting that standard versions may contain lead. Ensure the ordering suffix matches the specific screening level and packaging format required for the intended assembly process.

Single Zener Diodes Selection Notes

Select this component when a 4.7V Zener voltage with ±5% tolerance is required. Consider the 5-watt power rating and thermal resistance characteristics for heat sinking needs. Verify that the axial-lead T-18 package fits the board layout constraints and that the tape-and-reel option meets automated placement requirements.

Single Zener Diodes Part Context

This component belongs to the JEDEC registered 1N5333 through 1N5388B series of 5-watt Zener diodes. The series covers a wide voltage selection from 3.3 to 200 volts. The 1N5337B variant specifically addresses the 4.7V segment with standard B suffix tolerances.

Single Zener Diodes Replacement Considerations

Equivalent parts include other manufacturers' 1N5337B variants. Cross-reference with SMBJ5337B or SMBG5337B for surface mount equivalents if space constraints require SMD packages.