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1N4704UR-1/TR
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Product Detailed Parameters
- Description：DIODE ZENER 17V 500MW DO213AA
- Series：-
- Mfr：Microchip Technology
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Zener (Nom) (Vz)：17 V
- Tolerance：±5%
- Power - Max：500 mW
- Impedance (Max) (Zzt)：-
- Current - Reverse Leakage @ Vr：50 nA @ 12.9 V
- Operating Temperature：-65°C ~ 175°C (TJ)
- Mounting Type：Surface Mount
- Package / Case：DO-213AA
- Voltage - Forward (Vf) (Max) @ If：1.5 V @ 100 mA
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Overview
The Microchip Technology 1N4704UR-1/TR is a 500 mW surface mount Zener voltage regulator in the DO-213AA (MELF) package. It provides a nominal Zener voltage of 17.0 V with a standard tolerance of ±5%. The device operates within a junction temperature range of -65°C to +175°C and features a Zener test current of 50 µA. Maximum reverse leakage current is specified at 0.05 µA, while the maximum DC Zener current reaches 29.0 mA.
Feature Summary
- Hermetically sealed glass MELF package with internal metallurgical bond for high reliability
- Surface mount equivalent of JEDEC registered 1N4678 through 1N4717 series
- Inherently radiation hard design compliant with MIL-STD-750 method 1020
Applications
- Voltage regulation over broad operating current and temperature ranges
- High-reliability electronic circuits requiring radiation hardness
- Space and defense applications utilizing up-screening per MIL-PRF-19500
Procurement Notes
Verify the specific suffix configuration against official datasheets to confirm RoHS compliance status and tolerance grade. The TR suffix indicates tape and reel packaging; ensure handling procedures align with EIA-481-1-B standards. Confirm availability of high-reliability screening options if required for mission-critical environments.
Selection Notes
Select this component when a hermetically sealed surface mount Zener diode is required for harsh environments. The 17.0 V rating fits within the 1.8 V to 43 V selection range of the series. Consider tighter 1% or 2% tolerance variants if standard 5% precision is insufficient for the circuit design.
Part Context
This part belongs to the 1N4678UR-1 through 1N4717UR-1 series of 0.5 W glass surface mount Zener diodes manufactured by Microchip Technology. The series offers a wide voltage selection from 1.8 V to 43 V in the DO-213AA package, serving as the surface mount counterpart to traditional axial leaded equivalents.
Replacement Considerations
Direct replacements include other manufacturers' DO-213AA Zener diodes rated at 17 V with 500 mW power dissipation. Verify that substitute components meet the same hermetic sealing and radiation hardness requirements if applicable to the original application.
