1N5366/TR12

Overview

The Microchip Technology 1N5366/TR12 is a silicon 5-watt Zener diode from the JEDEC registered 1N5333-5388B series. It provides voltage regulation at a nominal Zener voltage of 39 V with a ±5% tolerance (B suffix). The device operates in an axial T-18-2 package and supports tape-and-reel packaging via the TR suffix. Electrical characteristics include a test current of 30 mA, a maximum reverse leakage current of 0.5 µA, and a dynamic impedance of 14 Ω. It withstands operating temperatures from -65°C to +150°C.

Feature Summary

• Provides stable voltage regulation across a broad range of operating currents and temperatures
• Features flexible axial-lead mounting terminals for through-hole integration
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Moisture classification Level 1 requiring no dry pack storage

Applications

• Voltage regulation circuits requiring 5W power dissipation
• High current applications with adequate heat sinking
• General purpose protection against high surge stresses

Procurement Notes

Verify the specific ordering suffixes when sourcing this component. The 'e3' designation indicates RoHS compliance, while the 'TR' suffix confirms tape-and-reel packaging availability. Confirm that the manufacturer accepts the part number format provided by distributors, as some listings may use variations like 1N5366Ce3/TR12. Ensure the procurement matches the exact electrical tolerances required for your design.

Selection Notes

Select this component for designs requiring a fixed 39V reference or regulation point within the 1N5333-5388B family. The B suffix ensures a standard ±5% voltage tolerance. Consider the thermal resistance of 25°C/W junction-to-lead when designing heat sinks, as the device can operate at high DC currents if adequately cooled. Verify that the T-18-2 package dimensions fit the target PCB layout constraints.

Part Context

This part belongs to the Microsemi Scottsdale Division's Silicon 5 Watt Zener Diodes series, now under Microchip Technology. The 1N5366 variant specifically targets the 39V regulation segment of the broader 3.3V to 200V product line. These devices are JEDEC registered and designed for robust performance in demanding environments, offering a balance of high power handling and precise voltage control.

Replacement Considerations

Compatible substitutes within the same series include 1N5365B and 1N5367B, which offer adjacent voltage ratings of 36V and 43V respectively. For equivalent specifications, verify that replacement parts maintain the 5W power rating, T-18-2 axial package, and ±5% tolerance.