1N5353/TR8

Overview

The Microchip Technology 1N5353/TR8 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 16 V with a ±5% tolerance. 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 maximum dynamic impedance of 2.5 Ohms, a maximum reverse current of 1.0 µA, and a maximum regulator current of 6.0 A when adequately heat sunk.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Features flexible axial-lead mounting terminals for through-hole integration

Applications

• Voltage regulation circuits requiring 5-watt power dissipation
• High current applications with adequate heat sinking
• General purpose voltage reference designs

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm the presence of the TR suffix indicates tape and reel packaging per EIA-296 standards. Ensure the B suffix corresponds to the required ±5% voltage tolerance. Validate thermal management requirements align with the specified junction-to-lead thermal resistance for reliable operation.

Selection Notes

Select this component for applications requiring a 16 V regulated output with high current handling capabilities up to 6.0 A. Consider the T-18 package dimensions for PCB layout constraints. Evaluate thermal derating curves if ambient temperatures exceed standard limits or if mounted on FR4 PC boards without dedicated heat sinking. Verify compatibility with existing circuit protection requirements.

Part Context

This part belongs to the Microsemi Scottsdale Division 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 1N5353 variant specifically targets the 16 V regulation point within this lineup, utilizing standard plastic encapsulation with Level 1 moisture classification.

Replacement Considerations

Compatible equivalents include other 1N5353 variants from different manufacturers adhering to the same JEDEC registration. Surface mount alternatives such as SMBJ5353 or SMBG5353 may be considered if footprint conversion is necessary. Verify that substitute parts meet the 5-watt power dissipation and 16 V Zener voltage specifications.