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Product Detailed Parameters
- Description：DIODE AVAL 2000V 250MA SOD57
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Cut Tape (CT),Tape & Box (TB)
- Technology：Avalanche
- Voltage - DC Reverse (Vr) (Max)：2000 V
- Current - Average Rectified (Io)：250mA
- Voltage - Forward (Vf) (Max) @ If：2.4 V @ 200 mA
- Speed：Fast Recovery =< 500ns, > 200mA (Io)
- Reverse Recovery Time (trr)：300 ns
- Current - Reverse Leakage @ Vr：2 µA @ 1200 V
- Capacitance @ Vr, F：-
- Mounting Type：Through Hole
- Package / Case：SOD-57, Axial
- Supplier Device Package：SOD-57
- Operating Temperature - Junction：-55°C ~ 150°C
- Grade：-
- Qualification：-
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Overview
The BY203-20STAP is a fast avalanche sinterglass diode from Vishay Semiconductors, housed in an SOD-57 package. It features a repetitive peak reverse voltage of 2000 V and an average forward current rating of 0.25 A. The device supports a peak forward surge current of 20 A and exhibits a maximum reverse recovery time of 300 ns. Electrical characteristics include a maximum forward voltage of 2.4 V at 0.2 A and a reverse leakage current of 2 μA at 1200 V. The junction temperature range spans from -55 °C to +150 °C.
Feature Summary
- Glass passivated junction with hermetically sealed package
- Fast rectification and switching capabilities for avalanche applications
- Plated axial leads solderable per MIL-STD-750 method 2026
Applications
- TV-line output circuits
- Switch mode power supplies
Procurement Notes
Verify the specific ordering code BY203-20STAP against the manufacturer's documentation to confirm the ammopack packaging format. Ensure that the required minimum order quantity aligns with the specified 25,000 units per reel or pack configuration. Cross-reference the component marking and polarity band location with the mechanical data sheet prior to procurement to prevent installation errors.
Selection Notes
Select this component when high-voltage blocking capability up to 2000 V is required in a compact SOD-57 form factor. The fast recovery characteristic makes it suitable for high-frequency switching environments. Verify that the thermal resistance and ambient temperature conditions allow the device to operate within its specified junction temperature limits during continuous operation.
Part Context
This part belongs to the BY203 series of fast avalanche sinterglass diodes manufactured by Vishay Semiconductors. The series includes variants differentiated primarily by their reverse voltage ratings, such as 1200 V and 1600 V options. All members share the same physical SOD-57 package and general electrical architecture designed for robust performance in demanding electronic circuits.
Replacement Considerations
Direct substitutes within the same family include the BY203-12S and BY203-16S models. These alternatives offer identical package dimensions and current ratings but provide lower repetitive peak reverse voltage ratings of 1200 V and 1600 V respectively. Ensure the application voltage requirements do not exceed these reduced ratings before substitution.
