1N4134 (DO35)

Single Zener Diodes Overview

The Microsemi 1N4134 (DO35) is a 91V Zener voltage regulator diode housed in an axial-lead glass DO-35 package. It features a nominal Zener voltage of 91V with a standard tolerance of ±5%. The device operates at a test current of 250 µA and supports a maximum power dissipation of 0.5W. Electrical characteristics include a maximum dynamic impedance of 0.01 Ohms, a maximum reverse current of 69.2 µA, and a noise density of 40 µV/√Hz. It functions within a temperature range of -65°C to +175°C.

Single Zener Diodes Feature Summary

• Constructed with an internal metallurgical bond for enhanced reliability.
• Hermetically sealed in a glass DO-35 axial-lead package.
• Capable of regulating voltage across broad ranges of current and temperature.
• Inherently radiation hard as described in Microsemi MicroNote 050.

Single Zener Diodes Applications

• High-reliability military and aerospace circuits
• Precision instrumentation requiring stable reference voltages
• Voltage regulation in harsh environmental conditions

Single Zener Diodes Procurement Notes

Verify the specific suffixes required for your application. The base JEDEC number indicates commercial grade; add 'JAN', 'JANTX', or 'JANS' prefixes for military qualification levels per MIL-PRF-19500/435. Include '-1' for the metallurgically bonded version. Use 'e3' only if RoHS compliance is needed on commercial grades. Confirm lead finish specifications match your soldering process requirements.

Single Zener Diodes Selection Notes

Select this component when a 91V breakdown voltage is required in a hermetically sealed axial package. Ensure the circuit design accommodates the 0.5W power rating and linear derating above 50°C. Consider tighter tolerance suffixes ('C' for 2%, 'D' for 1%) if standard 5% accuracy is insufficient. Verify that the low capacitance and radiation hardness align with the system's operational environment.

Single Zener Diodes Part Context

This part belongs to the 1N4099 through 1N4135 series of 500 mW Zener diodes. These devices are widely recognized industry standards for voltage regulation. Microsemi offers these in various reliability grades, including commercial and military qualifications up to JANS level. The series provides extensive voltage selection from 1.8V to 100V in the same physical form factor.

Single Zener Diodes Replacement Considerations

Direct substitutes include other manufacturers' 1N4134 parts meeting JEDEC specifications. For higher reliability needs, consider the 1N4134-1 variant which includes the internal metallurgical bond. Surface mount equivalents are available in DO-213AA (1N4134UR-1) or DO-216 packages (1PMT4134).