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AU3PDHM3/87A
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Product Detailed Parameters
- Description：DIODE AVALANCHE 200V 1.7A TO277A
- Series：eSMP®
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Technology：Avalanche
- Voltage - DC Reverse (Vr) (Max)：200 V
- Current - Average Rectified (Io)：1.7A
- Voltage - Forward (Vf) (Max) @ If：1.9 V @ 3 A
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：75 ns
- Current - Reverse Leakage @ Vr：10 µA @ 200 V
- Capacitance @ Vr, F：72pF @ 4V, 1MHz
- Mounting Type：Surface Mount
- Package / Case：TO-277, 3-PowerDFN
- Supplier Device Package：TO-277A (SMPC)
- Operating Temperature - Junction：-55°C ~ 175°C
- Grade：-
- Qualification：-
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Overview
The AU3PDHM3/87A is an avalanche diode manufactured by Vishay General Semiconductor - Diodes Division. It is housed in a TO-277A surface-mount package and features a maximum DC reverse voltage of 200V with an average rectified current rating of 1.7A. The component exhibits a maximum forward voltage drop of 1.9V at 3A and maintains a fast recovery time of less than or equal to 500ns, ensuring minimal switching losses during operation.
Feature Summary
- Engineered for avalanche breakdown conduction under reverse bias conditions exceeding the specified threshold
- Utilizes a compact TO-277A surface-mount form factor for efficient board space utilization
- Provides rapid recovery characteristics to minimize switching losses in high-speed applications
Applications
- Transient voltage suppression circuits requiring avalanche mode protection
- High-voltage power supply input stages
- Industrial control systems needing robust overvoltage clamping
Procurement Notes
Verify the specific suffix /87A against official Vishay documentation to confirm packaging details and compliance status. Ensure the procurement channel sources directly from authorized distributors to guarantee authenticity. Cross-reference the full part number with the latest datasheet revision to confirm electrical parameters match your design requirements before finalizing orders.
Selection Notes
Select this component when circuit designs require a 200V reverse voltage rating combined with a 1.7A current capacity in a small surface-mount footprint. Consider the 500ns recovery time for applications demanding faster switching speeds compared to standard rectifiers. Evaluate the TO-277A package compatibility with existing PCB footprints and thermal management strategies prior to integration into the system architecture.
Part Context
This device belongs to Vishay's avalanche diode portfolio, designed specifically for robust transient protection and voltage regulation in harsh environments. The AU3 series utilizes advanced semiconductor processing to achieve reliable performance under high-stress conditions. These components are engineered to withstand repetitive avalanche events without degradation, making them suitable for critical infrastructure and industrial electronics where reliability is paramount.
Replacement Considerations
Direct substitutes include AU3PDHM3_A/I and AU3PMHM3/87A within the same manufacturer family. Verify pinout compatibility and ensure the alternative part meets the 200V reverse voltage and 1.7A current specifications required by the original design constraints.
