1N5345B/TR8

Single Zener Diodes Overview

The Microchip Technology 1N5345B/TR8 is a silicon 5-watt Zener diode in the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 8.7 V with a ±5% tolerance, indicated by the B suffix. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. Electrical characteristics include a test current of 150 mA, a maximum dynamic impedance of 2.0 Ohms, and a maximum reverse current of 10 µA. The component is supplied in tape and reel packaging.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for through-hole applications
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B

Single Zener Diodes Applications

• Voltage regulation in power supply circuits
• Reference voltage sources in electronic systems
• Overvoltage protection components

Single Zener Diodes Procurement Notes

Verify the specific manufacturer origin, as the datasheet identifies Microsemi while the model implies Microchip Technology. Confirm RoHS compliance status, as the e3 suffix indicates compliance but is absent from this part number. Ensure the TR suffix matches the required tape and reel specifications for automated assembly processes.

Single Zener Diodes Selection Notes

Select this component when a 5-watt power dissipation rating is required for high-current regulation tasks. The 8.7 V nominal voltage and ±5% tolerance suit precision applications needing tight voltage control. Consider the T-18 package dimensions and thermal resistance characteristics for adequate heat sinking during operation.

Single Zener Diodes Part Context

This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The B suffix specifically denotes a standard voltage tolerance of plus or minus 5%. These devices are designed for applications requiring robust performance under high DC currents with appropriate heat sinking.

Single Zener Diodes Replacement Considerations

Public confirmed substitute part numbers: 1N5345B, 1N5345BE3.