1N5355CE3/TR8

Overview

The Microchip Technology 1N5355CE3/TR8 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 18V with a tight tolerance of ±2%, indicated by the 'C' suffix. The device operates within a temperature range of -65°C to +150°C and features a T-18 axial lead package. The 'e3' suffix denotes RoHS compliance, while the 'TR8' suffix indicates tape and reel packaging.

Feature Summary

• Provides precise voltage regulation with ±2% tolerance for stable circuit performance
• Handles high power dissipation up to 5 watts with low thermal resistance design
• Features flexible axial-lead mounting terminals suitable for through-hole applications
• Withstands high surge stresses and exhibits minimal voltage change versus current

Applications

• Voltage regulation in broad operating current and temperature ranges
• High specified maximum current applications requiring adequate heat sinking
• Surge stress protection circuits

Procurement Notes

Verify the specific ordering suffixes against official documentation to confirm exact electrical tolerances, packaging format, and environmental compliance status. Ensure compatibility with existing thermal management designs due to the 5-watt power rating. Confirm availability as this component may be subject to discontinuation or supply constraints.

Selection Notes

Select this component when a 18V reference with tight ±2% accuracy is required in a high-power environment. Consider the T-18 package dimensions and thermal resistance characteristics for proper PCB layout. Verify that the operating current remains within the specified limits to maintain the rated power dissipation without exceeding junction temperatures.

Part Context

This part belongs to the 1N5333B thru 1N5388B series of silicon 5-watt Zener diodes originally produced by Microsemi's Scottsdale Division. The series offers a wide selection of voltages from 3.3V to 200V with various tolerance options identified by suffix letters. These plastic encapsulated devices are designed for robust performance in demanding electronic applications.

Replacement Considerations

Equivalent parts include other 1N5355 variants with matching voltage and tolerance specifications, such as 1N5355B (±5%) or 1N5355A (±10%), provided the tolerance requirements allow. Surface mount equivalents like SMBJ5355 or SMBG5355 may be considered if footprint adaptation is feasible.