1N5333B

Single Zener Diodes Overview

The Microsemi Corporation 1N5333B is a JEDEC registered silicon 5.0 watt Zener diode housed in a plastic T-18 axial leaded package. It provides voltage regulation at a nominal Zener voltage of 3.3V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features an isolated case connection. Electrical characteristics include a maximum dynamic impedance of 3.0 ohms, a maximum reverse current of 300 µA at 1.0V, and a maximum regulator current of 1440 mA.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and maintains minimal changes of voltage versus current
• Features flexible axial-lead mounting terminals for versatile installation
• Nonsensitive to electrostatic discharge per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation circuits requiring stable DC supply rails
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in power supply designs

Single Zener Diodes Procurement Notes

Verify the specific suffix letter on the part number to confirm the exact voltage tolerance required for the application. Confirm that the procurement order specifies the correct moisture classification level and packaging format. Ensure that adequate heat sinking provisions are included in the system design to support the rated power dissipation capabilities during operation.

Single Zener Diodes Selection Notes

Select this component when a 3.3V regulated output is needed with a ±5% tolerance. Consider the thermal resistance requirements based on the intended mounting method, whether on a FR4 PC board or via direct lead attachment. Evaluate the maximum surge current capability against potential transient events in the circuit environment.

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 wide selection of voltages from 3.3V to 200V, utilizing different suffix letters to identify specific tolerances. These devices are designed for applications requiring robust voltage regulation and high power handling capabilities.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available as SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B. RoHS compliant versions can be identified by adding the e3 suffix to the part number.