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1N4681UR-1
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Product Detailed Parameters
- Description：DIODE ZENER 2.4V 500MW DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Voltage - Zener (Nom) (Vz)：2.4 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：2 µA @ 1 V
- Operating Temperature：-65°C ~ 175°C
- Mounting Type：Surface Mount
- Package / Case：DO-213AA
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 100 mA
- Grade：-
- Qualification：-
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Overview
The Microchip Technology 1N4681UR-1 is a single silicon Zener diode housed in the DO-213AA (MELF-2) glass package. It features a nominal Zener voltage of 2.4 V with a tolerance of ±5%. The device supports a maximum power dissipation of 0.5 W and operates within a temperature range of -65 °C to +175 °C. Designed for surface mount applications, it offers hermetic sealing and isolated case connection.
Feature Summary
- Hermetically sealed glass MELF construction for environmental protection
- High thermal stability supporting extended operating temperatures up to 175 °C
- Compact surface-mount DO-213AA package design
Applications
- Voltage regulation in high-reliability electronic circuits
- Overvoltage protection for sensitive semiconductor components
- Reference voltage generation in precision measurement systems
Procurement Notes
Verify the specific manufacturer source, as this component was originally associated with Microsemi, now part of Microchip Technology. Confirm that the received unit matches the DO-213AA package style and hermetic sealing requirements. Ensure the Zener voltage specification aligns with the 2.4 V nominal value and ±5% tolerance needed for your circuit design before final integration.
Selection Notes
Select this component when a hermetically sealed, surface-mount Zener diode is required for harsh environments. The DO-213AA package provides a compact footprint suitable for space-constrained designs. Consider the 0.5 W power rating and wide temperature range (-65 °C to +175 °C) to ensure adequate thermal headroom and reliability under extreme operating conditions compared to standard commercial-grade alternatives.
Part Context
This component belongs to the series of single Zener diodes manufactured by Microchip Technology. It utilizes the standardized DO-213AA package, commonly referred to as MELF-2, which is widely recognized for its robustness in military and aerospace applications. The device represents a continuation of legacy specifications previously managed under the Microsemi brand.
Replacement Considerations
The 1N4681URHR from Digitron is a documented alternative offering similar electrical characteristics and package form factor. Verify compatibility regarding lead finish and hermetic sealing standards when substituting.
