1N5356B/TR12

Overview

The Microchip Technology 1N5356B/TR12 is a silicon 5.0-watt Zener diode in the JEDEC registered 1N5333-5388B series, manufactured by the Microsemi Scottsdale Division. It provides voltage regulation at a nominal Zener voltage of 19 V with a ±5% tolerance. The device features an axial-lead T-18 plastic encapsulated package and operates within a temperature range of -65°C to +150°C. Electrical characteristics include a maximum dynamic impedance of 3.0 Ohms, a maximum reverse current of 0.5 µA, and a maximum regulator current of 5.3 A. The component is supplied in tape and reel packaging.

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
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B requiring no dry pack

Applications

• Voltage regulation circuits
• Surge protection applications
• Reference voltage generation

Procurement Notes

Verify the specific suffix 'TR12' indicates tape and reel packaging as defined by EIA-296 standards. Confirm that the part number corresponds to the B suffix designation for ±5% voltage tolerance. Ensure compatibility with the specified thermal resistance parameters when designing heat sinking solutions for steady-state power dissipation.

Selection Notes

Select this component for applications requiring a 19 V reference or regulation point with a 5 W power rating. Consider the T-18 axial lead package for through-hole mounting requirements. Evaluate the thermal management needs based on the junction-to-lead thermal resistance of 25 °C/W to ensure operation remains within the specified -65°C to +150°C temperature range under expected load conditions.

Part Context

This component 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 3.3 V to 200 V. The 1N5356B specifically targets the 19 V regulation segment within this standardized JEDEC registered lineup, providing robust performance for general-purpose electronic designs.

Replacement Considerations

SMBJ5356B-TP by MCC (Micro Commercial Components) is listed as a direct surface-mount equivalent.