1N5345B

Single Zener Diodes Overview

The Microsemi Corporation 1N5345B is a JEDEC registered silicon 5.0-watt Zener diode housed in an axial-lead T-18 plastic package. It provides voltage regulation at a nominal Zener voltage of 8.7 V with a standard tolerance of ±5%. The device operates within a temperature range of -65°C to +150°C and features a maximum reverse current of 10 µA. Electrical characteristics include a test current of 150 mA, a maximum dynamic impedance of 2.0 Ω, and a maximum regulator current of 545 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 voltage changes versus current
• Features flexible axial-lead mounting terminals for versatile installation
• Non-sensitive to electrostatic discharge (ESD) per MIL-STD-750 Method 1020

Single Zener Diodes Applications

• Voltage regulation over wide operating ranges
• High surge stress protection circuits
• Power supply reference applications

Single Zener Diodes Procurement Notes

Verify the specific manufacturer source when sourcing this component, as the 1N5345B designation is utilized by multiple semiconductor producers including Microsemi, onsemi, and Diotec Semiconductor. Confirm that the procurement matches the required JEDEC registration standards and verify RoHS compliance status if environmental regulations apply to the intended assembly process.

Single Zener Diodes Selection Notes

Select this component for applications requiring robust 5-watt power dissipation capabilities in an axial-lead form factor. Ensure adequate heat sinking is provided to support operation at high maximum DC currents, as performance relies on maintaining appropriate thermal conditions. Verify that the 8.7 V regulation point aligns with circuit requirements and that the ±5% tolerance meets system precision needs.

Single Zener Diodes Part Context

This part belongs to the 1N5333 through 1N5388 series of JEDEC registered 5.0-watt Zener diodes. The series offers a comprehensive voltage selection ranging from 3.3 V to 200 V. Different suffix letters identify specific voltage tolerances, with the 'B' suffix denoting the standard ±5% accuracy level found in this specific model.

Single Zener Diodes Replacement Considerations

Surface mount equivalents are available in SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B formats. Other manufacturers produce identical specifications under the same 1N5345B designation.