1N4703UR-1/TR

Overview

The Microchip Technology 1N4703UR-1/TR is a 500 mW surface mount Zener voltage regulator in the DO-213AA package. It provides a nominal Zener voltage of 16.0 V with a standard tolerance of ±5%. The device operates at a test current of 50 µA and features a maximum reverse leakage current of 0.05 µA. It supports a junction temperature range from -65°C to +175°C.

Feature Summary

• Hermetically sealed glass DO-213AA MELF style package
• Internal metallurgical bond for high reliability
• Non-sensitive to ESD per MIL-STD-750 method 1020
• Inherently radiation hard

Applications

• Voltage regulation over broad operating current and temperature ranges
• High-reliability electronic circuits requiring radiation hardness
• Surface mount equivalents for JEDEC registered series

Procurement Notes

Verify the specific ordering suffix against official documentation to confirm compliance status, such as RoHS adherence or military screening levels like MIL-PRF-19500. Confirm that the TR suffix indicates tape and reel packaging per EIA-481-1-B standards before procurement.

Selection Notes

Select this component when a hermetically sealed surface mount Zener diode is required for high-reliability applications. Ensure the 16.0 V nominal voltage and 500 mW power dissipation align with circuit requirements. Consider the tight voltage tolerances and low capacitance characteristics for sensitive designs.

Part Context

This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 watt glass surface mount Zener voltage regulators. These devices serve as surface mount equivalents to the JEDEC registered 1N4678 through 1N4717 series, offering similar electrical performance in a compact DO-213AA package.

Replacement Considerations

Direct replacements include other parts within the 1N4678UR-1 thru 1N4717UR-1 series. Verify compatibility regarding package type, power rating, and voltage tolerance if substituting with commercial grade variants.