1N4699-1

Overview

The Microchip Technology 1N4699-1 is a 0.5 W axial-leaded Zener voltage regulator housed in a hermetically sealed glass DO-35 package. It provides a nominal Zener voltage of 12 V with a standard 5% tolerance and a test current of 50 µA. The device features an internal metallurgical bond, operates within a junction temperature range of -65°C to +175°C, and offers minimal capacitance for high-frequency stability.

Feature Summary

• Internal metallurgical bond construction
• Hermetically sealed glass DO-35 package
• Minimal capacitance characteristics
• ESD non-sensitive per MIL-STD-750 method 1020

Applications

• Voltage regulation over broad operating currents
• Temperature-compensated reference circuits
• Radiation-hardened electronic systems

Procurement Notes

Verify the specific suffix requirements against the manufacturer's nomenclature guide to ensure correct tolerance and compliance levels. Confirm that the ordering information matches the intended reliability level and RoHS status, as commercial and military-grade options differ in plating and screening specifications.

Selection Notes

Select this component when a stable 12 V reference is required in harsh environments. The wide operating temperature range and radiation hardness make it suitable for aerospace or industrial applications where standard commercial diodes may fail. Ensure the circuit design accommodates the specified thermal resistance and power derating curves.

Part Context

This part belongs to the 1N4678-1 through 1N4717-1 series of 500 mW Zener diodes. The series covers a voltage selection from 1.8 V to 43 V. These devices are JEDEC registered and offer optional tighter tolerances and up-screening in reference to MIL-PRF-19500 standards.

Replacement Considerations

Direct substitutes include other 1N4699 variants with different tolerance suffixes (e.g., C for 2%, D for 1%). Surface mount equivalents are available in the 1N46xxUR-1 series using the DO-213AA package.