1N5357B/TR12

Overview

The Microchip Technology 1N5357B/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by Microsemi. It provides voltage regulation at a nominal Zener voltage of 20V with a ±5% tolerance. The device operates within a temperature range of -65°C to +150°C and features flexible axial-lead mounting terminals in a T-18 package. The 'TR' suffix indicates tape and reel packaging per EIA-296 standards.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and is nonsensitive to electrostatic discharge (ESD)
• Features minimal changes in voltage versus current as specified by voltage regulation parameters

Applications

• Voltage regulation circuits requiring robust thermal performance
• Applications necessitating high surge stress withstand capability
• Systems utilizing flexible axial-lead mounting terminals for through-hole integration

Procurement Notes

Verify component authenticity against official Microchip or Microsemi documentation. Confirm that the specific ordering suffix matches the required tape and reel configuration. Ensure compliance with moisture classification Level 1 requirements. Validate electrical characteristics against the provided datasheet specifications prior to implementation.

Selection Notes

Select this component when a 20V Zener voltage with ±5% tolerance is required for power dissipation up to 5 watts. Consider the T-18 axial lead package for mechanical stability. Evaluate thermal resistance requirements based on the intended heat sinking method, as steady-state power dissipation varies significantly between free-air and board-mounted conditions.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes originally developed by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3V to 200V. The 'B' suffix specifically denotes a standard voltage tolerance of plus/minus 5%. The 'e3' designation indicates RoHS compliance, while 'TR' specifies the tape and reel packaging format.

Replacement Considerations

Consult the manufacturer's datasheet for direct equivalents within the 1N5333-5388B series. Verify that any substitute maintains the 5-watt power rating and compatible axial lead dimensions. Cross-reference electrical parameters such as dynamic impedance and reverse leakage current to ensure circuit compatibility.