1N5369/TR12

Overview

The Microchip Technology 1N5369/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 51 V with a test current of 25 mA. The device features a maximum dynamic impedance of 27 Ohms and a maximum reverse leakage current of 0.5 µA. It operates within a temperature range of -65°C to +150°C and utilizes a T-18 axial lead package.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Withstands high surge stresses and exhibits minimal voltage change versus current
• Features flexible axial-lead mounting terminals for through-hole integration

Applications

• Voltage regulation in power supply circuits
• Overvoltage protection for sensitive electronic components
• Reference voltage generation in measurement systems

Procurement Notes

Verify component authenticity by checking manufacturer markings against official datasheet specifications. Confirm RoHS compliance status via the e3 suffix if required. Ensure the TR12 tape and reel packaging matches storage and handling requirements. Validate that the specific lot corresponds to the correct voltage tolerance and electrical characteristics defined in the product documentation.

Selection Notes

Select this component when a 51 V regulation point is required with a 5 W power dissipation capability. The T-18 package supports high thermal performance compared to lower-power alternatives. Consider the ±5% tolerance inherent to the B suffix for standard applications. Evaluate thermal resistance requirements based on the intended heat sinking method and ambient temperature conditions.

Part Context

This part belongs to the Microsemi (now Microchip Technology) 1N5333-5388B series of silicon Zener diodes. The series covers a wide voltage range from 3.3 V to 200 V. The 'TR' suffix indicates availability in tape and reel packaging, while the 'e3' designation typically denotes RoHS compliance. These devices are designed for general-purpose voltage regulation in industrial and commercial electronics.

Replacement Considerations

Compatible substitutes include other 51 V, 5 W Zener diodes in the T-18 or DO-204AE package. Verify that replacement parts meet the same 5 W power dissipation rating and operate within the -65°C to +150°C temperature range. Ensure dynamic impedance and leakage current specifications are comparable to maintain circuit performance.