1N5940CP/TR12

Single Zener Diodes Overview

The Microchip Technology 1N5940CP/TR12 is a glass-encapsulated Zener diode with a nominal voltage of 39 V and a 2% tolerance. It operates in the DO-41 axial package, providing a rated average power dissipation of 1.5 W at 25 °C ambient temperature. The device features a maximum dynamic impedance of 45 Ohms and a maximum reverse current of 900 µA at 39 V. It supports a junction temperature range from -65 °C to +175 °C and includes a tape-and-reel packaging option.

Single Zener Diodes Feature Summary

• Hermetically sealed voidless hard glass construction with tungsten slugs for enhanced reliability.
• Metallurgically enhanced internal contact design ensuring lower thermal resistance.
• Non-sensitive to electrostatic discharge per MIL-STD-750 method 1020.
• Inherently radiation hard as described in Microsemi MicroNote 050.

Single Zener Diodes Applications

• Voltage regulation over broad operating currents and temperatures
• High reliability applications requiring hermetic sealing
• Radiation-hardened circuit designs

Single Zener Diodes Procurement Notes

Verify component authenticity through authorized channels. Confirm RoHS compliance status, as commercial grades may differ from military screening levels. Check datasheet specifications against application requirements before integration. Ensure proper handling procedures are followed due to the axial lead configuration.

Single Zener Diodes Selection Notes

Select this component when precise voltage regulation within tight tolerances is required. The glass encapsulation offers superior environmental protection compared to plastic alternatives. Consider the thermal resistance characteristics for heat dissipation planning. Verify that the axial lead format aligns with the target PCB layout constraints.

Single Zener Diodes Part Context

This part belongs to the 1N5913BG–1N5956BG series of 1.5 Watt Glass Zener Diodes. The series provides voltage regulation across a wide range from 3.3 V to 200 V. Different suffixes indicate specific tolerances and packaging options, such as the 'C' for 2% tolerance and 'TR12' for tape-and-reel delivery.

Single Zener Diodes Replacement Considerations

Equivalent parts include other 1N5940 variants from different manufacturers. Verify pinout compatibility and electrical parameters before substitution. Ensure the replacement meets the same hermetic sealing and radiation hardness requirements if applicable.