1N5357C/TR12

Overview

The Microchip Technology 1N5357C/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333B through 1N5388B series. It provides voltage regulation with a nominal Zener voltage of 20 V and a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates in a T-18 axial leaded package, suitable for through-hole mounting. Electrical characteristics include a test current of 65 mA, a maximum dynamic impedance of 3.0 Ohms, and a maximum reverse leakage current of 0.5 µA at 14.4 V. It withstands high surge currents and functions within an operating temperature range of -65°C to +150°C.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance via C suffix identification
• Capable of handling high DC currents when adequately heat sunk
• Withstands high surge stresses and minimal voltage change versus current
• Moisture classification Level 1 requiring no dry pack

Applications

• Voltage regulation over broad operating current ranges
• Protection against high surge stresses in electronic circuits
• Applications requiring flexible axial-lead mounting terminals

Procurement Notes

Verify the specific part number suffixes to confirm tolerance levels and packaging options. The 'TR12' suffix indicates tape and reel packaging per EIA-296 standards. Confirm RoHS compliance status if required for your assembly process. Check manufacturer notifications for discontinuance or product change notices as availability may vary.

Selection Notes

Select this component when a 20 V reference with tight ±2% accuracy is required. Ensure adequate heat sinking is provided to manage the 5 W power dissipation rating. Verify that the axial lead form factor fits the mechanical constraints of the target PCB design. Consider thermal resistance values for junction-to-lead and junction-to-ambient calculations during layout.

Part Context

This component belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers a wide selection of voltages from 3.3 V to 200 V. The 'e3' suffix denotes RoHS compliance, while 'TR' indicates tape and reel packaging. These devices are designed for robust performance in demanding environments.

Replacement Considerations

Consult official datasheets for equivalent parts within the same voltage and tolerance class. Verify pinout compatibility and thermal characteristics before substitution.