1N5335A/TR8

Single Zener Diodes Overview

The Microsemi Corporation 1N5335A/TR8 is a silicon 5.0-watt Zener diode with a nominal voltage of 3.9 V and a ±10% tolerance, indicated by the 'A' suffix. It utilizes a T-18 axial-lead plastic package and is supplied in tape and reel format per EIA-296 standards. The device operates within a temperature range of -65°C to +150°C and features a maximum dynamic impedance of 2.0 ohms at a test current of 320 mA. Its thermal resistance is 25°C/W junction-to-lead.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across broad operating current and temperature ranges
• Features flexible axial-lead mounting terminals for through-hole integration
• Withstands high surge stresses and exhibits minimal voltage changes versus current
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation over wide operating current and temperature ranges
• High specified maximum current applications requiring adequate heat sinking
• Circuits requiring robust performance against high surge stresses

Single Zener Diodes Procurement Notes

Verify that the ordering suffix TR8 correctly corresponds to the T-18 axial-lead package and tape-and-reel packaging configuration as defined by the manufacturer's nomenclature. Confirm RoHS compliance status, noting that standard versions may not be compliant while e3 suffixes are available. Ensure the specific A suffix matches the required ±10% voltage tolerance for the design.

Single Zener Diodes Selection Notes

Select this component when a 3.9 V Zener reference with 5 W power dissipation is required. The T-18 package supports high DC currents provided sufficient heat sinking is implemented. Consider the ±10% tolerance if tighter specifications are unnecessary. Verify lead length requirements, as thermal resistance values depend on the 3/8 inch lead extension from the body.

Single Zener Diodes Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a voltage selection from 3.3 V to 200 V with various tolerance options identified by suffix letters. These plastic encapsulated devices are designed for applications requiring low thermal resistance and high surge capability.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B packages. RoHS compliant versions can be sourced by selecting parts with the e3 suffix.