1N3154A-1/TR

Overview

The Microchip Technology 1N3154A-1/TR is a temperature-compensated Zener reference diode designed for precision voltage regulation. It features an 8.4 V nominal Zener voltage with a tight tolerance of 4.76% and operates at a test current of 10 mA. The device provides low dynamic impedance of 15 Ohms and a minimal voltage temperature coefficient of 0.005%/°C, ensuring stable performance across wide thermal ranges from -65°C to +175°C. Housed in a hermetically sealed DO-204AA (DO-7) glass package, it dissipates up to 500 mW with a maximum reverse leakage current of 10 µA.

Feature Summary

• Temperature compensated design ensures stable reference voltage across extreme operating temperatures
• Hermetically sealed glass construction provides environmental protection and reliability
• Low dynamic impedance maintains consistent voltage regulation under varying load conditions

Applications

• Precision voltage reference circuits requiring high stability
• Temperature compensation networks in analog systems
• High-reliability aerospace and military electronic equipment

Procurement Notes

Verify the specific suffix configuration against official Microchip documentation to confirm exact tolerance and packaging specifications. Ensure compatibility with existing board layouts for the DO-204AA through-hole package. Confirm that the hermetic seal requirements align with your assembly environment standards before finalizing procurement orders.

Selection Notes

Select this component when applications demand superior thermal stability compared to standard Zener diodes. The low temperature coefficient makes it suitable for environments with significant thermal fluctuations. Consider the hermetic sealing requirement if moisture resistance or long-term reliability in harsh conditions is critical for the system design.

Part Context

This part belongs to the 1N3154 series of temperature-compensated Zener diodes manufactured by Microchip Technology. These devices are engineered to provide highly stable reference voltages by utilizing specialized doping profiles that counteract natural semiconductor voltage drift with temperature changes.

Replacement Considerations

Direct substitutes include other temperature-compensated Zener diodes with matching 8.4 V ratings and similar package constraints. Verify pinout compatibility and ensure equivalent thermal coefficients are met for critical reference applications.