1N5338B/TR8

Single Zener Diodes Overview

The Microsemi Corporation 1N5338B/TR8 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across a broad operating current and temperature range. It features a nominal Zener voltage of 5.1 V with a ±5% tolerance, indicated by the 'B' suffix. The device operates within a temperature range of -65°C to +150°C and includes a tape and reel option denoted by the 'TR' suffix. Key electrical parameters include a maximum dynamic impedance of 1.5 Ω at a test current of 240 mA, a maximum reverse current of 1.0 µA, and a maximum regulator current of 930 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for versatile installation
• Constructed with a void-free transfer molded thermosetting epoxy body

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable reference voltages
• Power supply designs utilizing high specified maximum currents
• Industrial equipment protection against transient voltage spikes

Single Zener Diodes Procurement Notes

Verify that the ordering suffix 'TR' corresponds to the tape and reel packaging configuration as defined by EIA-296 standards. Confirm compliance with RoHS requirements if the 'e3' suffix is present on the specific part number. Ensure the component meets moisture classification Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack storage.

Single Zener Diodes Selection Notes

Select this component when a 5.1 V regulation point is required with a ±5% tolerance. Consider the thermal resistance characteristics and derating curves for applications involving high DC currents or elevated ambient temperatures. Verify lead length requirements for optimal heat sinking performance.

Single Zener Diodes Part Context

This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi's Scottsdale Division. The series covers a voltage selection from 3.3 to 200 volts, offering various tolerance options identified by specific suffix letters. These plastic encapsulated devices are designed for robust operation in demanding environments.

Single Zener Diodes Replacement Considerations

Surface mount equivalents such as SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B are available from the same manufacturer.