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1N4528
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Product Detailed Parameters
- Description：DIODE STANDARD 800V 40A DO203AB
- Series：-
- Mfr：Microchip Technology
- Package：Bulk
- Technology：Standard
- Voltage - DC Reverse (Vr) (Max)：800 V
- Current - Average Rectified (Io)：40A
- Voltage - Forward (Vf) (Max) @ If：1.19 V @ 90 A
- Speed：Standard Recovery >500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：-
- Current - Reverse Leakage @ Vr：10 µA @ 800 V
- Capacitance @ Vr, F：-
- Mounting Type：Stud Mount
- Package / Case：DO-203AB, DO-5, Stud
- Supplier Device Package：DO-203AB (DO-5)
- Operating Temperature - Junction：-65°C ~ 200°C
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Overview
The Microchip Technology 1N4528 is a silicon rectifier diode designed for high-power applications. It features an 800V maximum repetitive reverse voltage rating and supports a 40A average rectified forward current. The component utilizes a stud mount configuration within the DO-203AB (DO-5) package, ensuring robust mechanical stability for industrial environments.
Feature Summary
- Standard recovery characteristics suitable for general-purpose rectification
- High thermal capacity via stud mount construction
- Robust silicon junction design for reliable operation
Applications
- Industrial power supplies
- Motor drive rectification circuits
- Welding equipment power stages
Procurement Notes
Verify the manufacturer source carefully as this legacy part number is produced by multiple vendors including Microchip and historical manufacturers like Motorola. Confirm the specific datasheet version matches your electrical requirements. Ensure the physical mounting hole dimensions align with your heatsink or chassis interface before ordering.
Selection Notes
Select this component when a standard recovery time is sufficient for the switching frequency of the application. The 40A current rating must be derated based on the actual operating ambient temperature and cooling method. Verify that the 800V reverse voltage provides adequate margin for peak inverse voltage spikes in the circuit.
Part Context
This device belongs to the 1N45xx series of high-current silicon rectifiers. These components are widely used in heavy-duty electronics where reliability under high stress conditions is critical. The DO-203AB package is a traditional leaded style often replaced by modern surface-mount equivalents in newer designs.
Replacement Considerations
Equivalent parts include the 1N4528 from other manufacturers such as Vishay or STMicroelectronics. Ensure the replacement maintains the same 800V/40A ratings and DO-203AB package footprint. Verify that the reverse recovery time specifications meet the original circuit design constraints.
