1N4370A_T50R

Single Zener Diodes Overview

The onsemi 1N4370A_T50R is a silicon Zener diode with a nominal voltage of 2.4V and a tolerance of ±5%. It operates in the DO-35 axial through-hole package, rated for 500mW power dissipation at lead temperatures up to 75°C. The device features a maximum dynamic impedance of 30Ω at 20mA test current and supports an operating junction temperature range from -65°C to +200°C.

Single Zener Diodes Feature Summary

• Provides stable voltage regulation via double plug construction within a hermetically sealed glass case.
• Features metallurgic bonding for enhanced reliability under extreme thermal conditions.
• Includes cathode identification via color banding on the DO-35 package.

Single Zener Diodes Applications

• Voltage reference circuits requiring low nominal voltage stability
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Single Zener Diodes Procurement Notes

Verify authenticity by checking for Fairchild Semiconductor logos and specific top marking codes (e.g., '37' and '0A'). Purchase only from authorized distributors to ensure traceability and avoid counterfeit components that may lack specified electrical characteristics or thermal ratings.

Single Zener Diodes Selection Notes

Select this component when a precise 2.4V regulation point is required in high-temperature environments. Ensure the circuit design accommodates the 500mW power limit and derating requirements above 75°C lead temperature. Verify compatibility with existing PCB footprints designed for the standard DO-35 axial package.

Single Zener Diodes Part Context

This part belongs to the 1N4370A series, which includes various Zener voltages ranging from 2.28V to 12V. These devices share common packaging and absolute maximum ratings but differ in nominal breakdown voltage and corresponding test currents. The series is widely used in general-purpose discrete semiconductor applications.

Single Zener Diodes Replacement Considerations

Equivalent parts include the 1N746A and 1N4370A variants from other manufacturers. Verify that replacement components match the 2.4V nominal voltage, 30Ω impedance, and DO-35 package dimensions to maintain circuit integrity.