1N4436

Overview

The Microchip Technology 1N4436 is a temperature-compensated Zener diode designed for precision voltage regulation applications. It features a nominal Zener voltage of 9.1 V with a tight tolerance of ±2%. The device operates at a test current of 5 mA and exhibits a low dynamic impedance of 20 Ohms, ensuring stable performance under varying load conditions. With a maximum power dissipation of 500 mW, it is housed in the DO-35 axial leaded package. The component supports an operating temperature range from -65°C to +175°C, making it suitable for demanding industrial environments.

Feature Summary

• Temperature compensation ensures minimal voltage drift across wide thermal ranges
• Tight voltage tolerance provides high precision for reference circuits
• Robust construction supports extended operating temperatures up to 175°C

Applications

• Precision voltage reference sources
• Temperature compensated regulator circuits
• Overvoltage protection in sensitive electronics

Procurement Notes

Verify the specific suffix or variant code against the manufacturer's official datasheet to ensure compatibility with required tolerance and temperature specifications. Confirm RoHS compliance status as manufacturing processes may vary by production batch. Request the latest data sheet directly from Microchip Technology to validate electrical parameters before integration into design.

Selection Notes

Select this component when precise voltage stability is required over a broad temperature spectrum. Ensure the circuit design accommodates the 500 mW power dissipation limit at maximum ambient temperatures. Verify that the 9.1 V nominal voltage aligns with system requirements and that the DO-35 package fits the available PCB footprint constraints.

Part Context

This part belongs to the standard 1N series of Zener diodes manufactured by Microchip Technology. It serves as a specialized variant optimized for temperature compensation compared to standard Zener diodes. The DO-35 package is a legacy through-hole format widely used in industrial and military applications requiring reliable axial-leaded components.

Replacement Considerations

Cross-reference with other manufacturers' 1N4436 equivalents such as those from ON Semiconductor or Vishay. Ensure substitute parts match the 9.1 V nominal voltage, ±2% tolerance, and 500 mW power rating. Verify that replacement components offer comparable temperature coefficients and dynamic impedance values.