1N5356E3/TR12

Overview

The Microchip Technology 1N5356E3/TR12 is a silicon 5.0-watt Zener diode from the JEDEC registered 1N5333-5388B series, designed for voltage regulation across a broad operating current and temperature range. It features a nominal Zener voltage of 19 V with a standard ±5% tolerance (B suffix). The device operates within a temperature range of -65°C to +150°C and utilizes a T-18 axial-lead package. Key electrical characteristics include a maximum reverse leakage current of 0.5 µA at 13.7 V and a maximum dynamic impedance of 3.0 Ω.

Feature Summary

• Provides stable voltage regulation over a wide operating current and temperature range
• Features flexible axial-lead mounting terminals suitable for through-hole applications
• Withstands high surge stresses and exhibits minimal changes in voltage versus current
• Constructed with a void-free transfer molded thermosetting epoxy body

Applications

• Voltage regulation circuits requiring robust thermal performance
• Power supply reference designs utilizing high surge current capabilities
• Industrial equipment operating under extreme environmental conditions

Procurement Notes

Verify the specific suffix configuration against official datasheets to confirm tolerance levels and compliance status. Confirm that the TR12 designation aligns with tape and reel packaging requirements for automated assembly processes. Ensure compatibility with existing thermal management strategies given the 5-watt power dissipation rating.

Selection Notes

Select this component when a precise 19 V reference is required with tight ±5% tolerance. Consider the low thermal resistance design if operation at high DC currents is necessary with adequate heat sinking. Evaluate the Level 1 moisture classification for storage handling without dry pack requirements.

Part Context

This part belongs to the 1N5333B through 1N5388B series of silicon 5-watt Zener diodes manufactured by Microsemi (now Microchip Technology). The series offers a selection of voltages from 3.3 to 200 volts with various tolerance options identified by suffix letters. These devices are JEDEC registered and available in military equivalent screening levels upon request.

Replacement Considerations

Direct surface mount equivalents are available as SMBJ5356B or SMBG5356B. Verify pinout compatibility and thermal dissipation characteristics when substituting with alternative manufacturers' parts.