1N5369B/TR12

Overview

The Microchip Technology 1N5369B/TR12 is a silicon 5-watt Zener diode with a nominal voltage of 51 V and ±5% tolerance. It operates in the -65°C to +150°C range, featuring a maximum reverse current of 0.5 µA at 36.7 V and a dynamic impedance of 27 Ω at a test current of 25 mA. The device utilizes an axial T-18 package and is supplied in tape and reel format.

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 circuits requiring 5-watt power dissipation
• High surge stress environments
• Through-hole PCB assembly

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 designation matches the intended tape and reel packaging configuration before finalizing procurement orders.

Selection Notes

Select this component when a 51 V reference is needed with ±5% precision. Verify thermal management requirements, as the 5-watt rating depends on adequate heat sinking or specific FR4 board copper pad configurations. Ensure the operating environment stays within the specified -65°C to +150°C temperature limits.

Part Context

This part belongs to the JEDEC registered 1N5333B through 1N5388B series of axial-leaded 5.0 watt Zener diodes. The series covers a voltage selection from 3.3 to 200 volts, utilizing specific suffix letters to identify voltage tolerances such as B for ±5%. These plastic encapsulated devices are designed for moisture classification Level 1 without dry pack requirements.

Replacement Considerations

Cross-reference with other 1N53xxB series parts for different voltage ratings. Verify equivalent 5-watt axial packages from other manufacturers if sourcing discontinued units.