1N5348/TR12

Overview

The Microchip Technology 1N5348/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 11 V with a ±5% tolerance, indicated by the 'B' suffix. The device operates in an axial T-18 package and supports tape-and-reel packaging via the 'TR' suffix. Electrical characteristics include a test current of 125 mA, a maximum dynamic impedance of 2.5 Ohms, and a maximum reverse leakage current of 5.0 µA. It withstands a maximum regulator current of 8.0 A and features a wide operating temperature range from -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and offers minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole integration
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation in power supply circuits
• Reference voltage generation in electronic systems
• Overvoltage protection applications

Procurement Notes

Verify component authenticity and datasheet alignment before procurement. Confirm that the specific ordering suffix matches the required electrical tolerances and packaging format. Ensure compatibility with existing thermal management designs due to the 5-watt power dissipation rating. Check for any product change notifications or discontinuance updates relevant to this part number.

Selection Notes

Select this component when a 5-watt axial Zener diode with 11 V regulation is required. The B suffix ensures a tight ±5% voltage tolerance suitable for precision applications. Consider the TR suffix for automated assembly processes requiring tape-and-reel packaging. Evaluate thermal derating requirements based on the specific mounting conditions and ambient temperatures.

Part Context

This component belongs to the Microsemi (now Microchip Technology) 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series covers a voltage range from 3.3 V to 200 V. The 1N5348 variant specifically targets the 11 V regulation point within this lineup, utilizing standard JEDEC registration standards for interchangeability and reliability in industrial and commercial electronics.

Replacement Considerations

Public confirmed substitute part numbers: 1N5348B, 1N5348BE3.