1N4135 (DO35)

Single Zener Diodes Overview

The Microsemi 1N4135 (DO-35) is a 500 mW Zener voltage regulator diode housed in an axial-lead glass DO-35 package. It provides a nominal Zener voltage of 100 V with a standard tolerance of ±5%. The device features an internal metallurgical bond and is qualified to MIL-PRF-19500/435 standards, including JAN, JANTX, JANTXV, and JANS reliability levels. Electrical characteristics include a maximum reverse current of 1 µA at the specified voltage and a maximum noise density of 40 µV/√Hz.

Single Zener Diodes Feature Summary

• Internal metallurgical bond construction for enhanced structural integrity
• Qualified per MIL-PRF-19500/435 for high-reliability applications
• Hermetically sealed glass DO-35 axial-lead package
• Low noise density performance suitable for sensitive circuits

Single Zener Diodes Applications

• High-reliability military and aerospace voltage regulation
• Precision reference voltage generation
• Radiation-hardened circuit protection
• Low-noise analog signal conditioning

Single Zener Diodes Procurement Notes

Verify that the specific part number suffix matches the required reliability level (JAN, JANTX, JANTXV, or JANS). Confirm RoHS compliance status if applicable, as commercial versions may differ from mil-qualified units. Ensure the ordering code includes the correct voltage tolerance suffix if tighter than standard 5% is needed. Cross-reference datasheet revision T4-LDS-0245-2 for final electrical limits.

Single Zener Diodes Selection Notes

Select this component when a hermetically sealed, radiation-tolerant Zener diode is required for critical systems. The 100 V rating suits high-voltage regulation tasks where low leakage and stability are paramount. Consider the -1 suffix for metallurgical bonding and higher reliability grades. Evaluate thermal derating requirements based on ambient temperature conditions exceeding 25 °C.

Single Zener Diodes Part Context

This device belongs to the 1N4099 through 1N4135 series of 500 mW glass Zener diodes manufactured by Microsemi. The series offers a wide voltage range from 1.8 V to 100 V. The 1N4135 specifically represents the upper end of this voltage spectrum within the standard DO-35 axial-lead form factor, designed for robust performance in demanding environments.

Single Zener Diodes Replacement Considerations

Direct substitutes include other mil-qualified 100 V Zener diodes in DO-35 packages meeting MIL-PRF-19500/435 specifications. Verify pinout compatibility and thermal resistance values. Commercial equivalents may lack the metallurgical bond and radiation hardness unless explicitly stated.