1N5355E3/TR12

Overview

The Microchip Technology 1N5355E3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, manufactured by the Microsemi Scottsdale Division. It provides voltage regulation at a nominal Zener voltage of 18 V with a standard tolerance of ±5%. 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 reverse current of 0.5 µA and a dynamic impedance of 2.5 Ω.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole integration
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B without requiring dry pack

Applications

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

Procurement Notes

Verify the component origin as the datasheet identifies Microsemi as the manufacturer while the model includes a Microchip suffix. Confirm RoHS compliance status via the e3 suffix designation. Check for specific military screening prefixes if required. Ensure the TR12 tape and reel packaging matches assembly requirements. Validate that the part number corresponds to the 18V variant within the 1N5333-5388B series.

Selection Notes

Select this component for applications requiring 5-watt power dissipation and 18-volt regulation. Consider the ±5% tolerance for general-purpose use. Evaluate thermal resistance requirements for heat sinking during high DC current operation. Verify compatibility with the T-18 axial lead package dimensions. Assess suitability for environments up to +150°C junction temperature.

Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes. The series offers a wide selection of voltages from 3.3 to 200 volts. Different suffix letters identify specific voltage tolerances. The e3 suffix indicates RoHS compliant devices. The TR suffix denotes tape and reel packaging options.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.