1N4693RL

Overview

The Motorola 1N4693RL is a silicon unidirectional voltage regulator diode housed in a hermetically sealed glass DO-35 package. It features metallurgically bonded construction with two pins and an isolated shell connection. The component is designed for single-diode configuration applications, operating at a maximum temperature of 175 °C with a power dissipation rating of 0.5 W.

Feature Summary

• Hermetically sealed glass encapsulation for environmental protection
• Metallurgically bonded internal structure
• Unidirectional voltage regulation capability

Applications

• Voltage reference circuits
• Overvoltage protection
• Clamping applications

Procurement Notes

Verify the manufacturer origin carefully, as the 1N4693 series was originally defined by Motorola but is now widely produced by multiple semiconductor vendors including ON Semiconductor. Confirm that the specific lot matches the required hermetic sealing standards if applicable to your design. Check for RoHS compliance status as older specifications may not meet current environmental directives.

Selection Notes

Select this component when a standard Zener diode in a DO-35 glass package is required for low-power regulation. Ensure the circuit design accounts for the 0.5 W power dissipation limit and the 175 °C maximum junction temperature. Verify that the hermetic seal requirement is necessary for the specific environment, as non-hermetic alternatives exist.

Part Context

This part belongs to the 1N469x series of Zener diodes, which are standardized rectifier and regulator components. The 'RL' suffix typically denotes a reel packaging format or specific vendor coding for the original Motorola production line. These diodes are commonly used in general-purpose electronic circuits requiring stable voltage references.

Replacement Considerations

Equivalent parts include the 1N4693 from other manufacturers such as ON Semiconductor (e.g., 1N4693B) or generic equivalents meeting the same electrical specifications. Ensure the replacement maintains the DO-35 package outline and hermetic sealing requirements if specified.