1N5350CE3/TR12

Overview

The Microchip Technology 1N5350CE3/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 14 V 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. Electrical characteristics include a maximum dynamic impedance of 2.5 Ohms and a maximum reverse current of 1.0 µA. The component is RoHS compliant (e3 suffix) and available in tape and reel packaging.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features flexible axial-lead mounting terminals for through-hole applications
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Moisture classification is Level 1 per IPC/JEDEC J-STD-020B, requiring no dry pack

Applications

• Voltage regulation circuits requiring high power dissipation
• Power supply reference designs
• Protection against overvoltage conditions

Procurement Notes

Verify that the specific part number includes the e3 suffix to confirm RoHS compliance and the C suffix to ensure the required ±2% voltage tolerance. Confirm the TR12 designation matches the required tape and reel packaging format. Cross-reference the manufacturer documentation to ensure the component meets the necessary military or industrial screening levels if applicable, as standard versions may differ from screened equivalents.

Selection Notes

Select this component when a 5-watt power rating and a 14 V regulation point are required. The ±2% tolerance makes it suitable for precision applications compared to standard 5% or 10% variants. Ensure adequate heat sinking is provided to maintain operation within the specified thermal resistance limits. Consider the T-18 package dimensions for PCB layout compatibility.

Part Context

This device belongs to the 1N5333B through 1N5388B series of silicon Zener diodes. The series offers a wide selection of voltages from 3.3 V to 200 V. The 1N5350 variant specifically targets the 14 V regulation segment. The product line is characterized by low thermal resistance design, allowing operation at high maximum DC currents when properly heat sunk.

Replacement Considerations

Surface mount equivalents such as SMBJ5350C or SMBG5350C are available from the same manufacturer family. Verify that any substitute maintains the 5 W power rating and ±2% tolerance specification.