1N5351/TR12

Overview

The Microchip Technology 1N5351/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation at a nominal Zener voltage of 14V with a standard tolerance of ±5%. The device features an axial-lead T-18 plastic package and operates within a temperature range of -65°C to +150°C. The 'TR' suffix indicates tape and reel packaging compliant with EIA-296 standards.

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 versatile integration
• Non-sensitive to electrostatic discharge per MIL-STD-750 Method 1020

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage sources in measurement equipment

Procurement Notes

Verify that the ordering suffix matches the required packaging configuration, as the TR designation specifically denotes tape and reel format. Confirm RoHS compliance status if environmental regulations apply, noting that e3 suffixes indicate compliance while standard versions may differ. Ensure the manufacturer source is correctly identified as Microsemi or its successor entity for accurate datasheet alignment.

Selection Notes

Select this component when a 5-watt power dissipation rating is required for robust thermal performance. The 14V nominal voltage and ±5% tolerance suit applications needing precise regulation without tight manufacturing constraints. Consider the T-18 package dimensions for board space planning and verify heat sinking requirements for steady-state operation above ambient temperatures.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon Zener diodes manufactured by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3V to 200V. The 1N5351 variant specifically targets the 14V regulation point within this extensive lineup of axial-leaded devices.

Replacement Considerations

Surface mount equivalents are available in the SMBJ5333 to SMBJ5388B or SMBG5333B to SMBG5388B series. Verify pinout compatibility and thermal characteristics when transitioning from axial leads to surface mount packages.