1N4701

Overview

The Motorola 1N4701 is a silicon Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 14V with a tolerance of 5% and a maximum power dissipation of 0.5W. The component utilizes a DO-35 glass axial leaded package, which provides hermetic sealing for reliability in harsh environments. It operates as a unidirectional device within a temperature range extending from -65°C to +200°C.

Feature Summary

• Hermetically sealed glass construction ensures environmental protection and long-term stability.
• Metallurgically bonded internal die structure enhances mechanical robustness and thermal performance.
• Oxide passivated die surface protects against corrosion and electrical degradation.

Applications

• Voltage reference circuits requiring stable DC levels
• Overvoltage protection in sensitive electronic systems
• Clamping applications in signal processing paths

Procurement Notes

Verify the specific manufacturer source, as the 1N4701 designation is utilized by multiple semiconductor producers including Motorola/NXP and others. Confirm that the procurement specification explicitly requires the Motorola or NXP variant if brand-specific screening or quality standards are mandatory for the application. Ensure the package type matches the required DO-35 form factor.

Selection Notes

Select this component when a standard 14V regulation point is needed with moderate power handling capabilities. The DO-35 package is suitable for through-hole mounting where space constraints allow for axial leads. Consider the 5% tolerance if tighter voltage accuracy is not critical, and verify that the operating environment does not exceed the specified thermal limits for glass-encapsulated devices.

Part Context

This part belongs to the widely recognized 1N47xx series of Zener diodes, a standard family used extensively in general-purpose electronics. The 1N4701 specifically targets the 14V segment of this range. While originally associated with Motorola, similar specifications exist across various manufacturers, making it a common cross-reference item in industrial and commercial designs.

Replacement Considerations

Equivalent parts include the 1N4701A from other manufacturers offering identical 14V/0.5W specifications in DO-35 packages. Verify pinout compatibility and ensure the replacement maintains the same hermetic sealing requirements if used in aerospace or military-grade assemblies.