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Product Detailed Parameters
- Description：DIODE AVAL 1.2KV 250MA SOD57
- Series：-
- Mfr：Vishay General Semiconductor - Diodes Division
- Package：Tape & Reel (TR)
- Technology：Avalanche
- Voltage - DC Reverse (Vr) (Max)：1200 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 @ 700 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 BY203-12STR is a fast avalanche sinterglass diode manufactured by Vishay Semiconductors. It features a repetitive peak reverse voltage of 1200 V and an average forward current rating of 0.25 A. The device exhibits a maximum forward voltage of 2.4 V at 0.2 A, with a non-repetitive peak forward surge current capability of 20 A. Electrical characteristics include a maximum reverse current of 2 μA at 700 V and a reverse recovery time of 300 ns. The component operates within a junction temperature range of -55 °C to +150 °C and utilizes the SOD-57 package.
Feature Summary
- Fast avalanche sinterglass construction for high-speed rectification
- Hermetically sealed glass passivated junction
- High surge current capability
Applications
- TV-line output circuits
- Switch mode power supplies
Procurement Notes
Verify the specific ordering code suffix against official documentation to confirm packaging configuration. Confirm that the requested part number matches the exact electrical ratings required for the target application. Ensure compliance with RoHS directives as specified in the manufacturer's material categorization documentation before finalizing procurement.
Selection Notes
Select this component when designing circuits requiring fast switching speeds and high reverse voltage blocking capabilities. The SOD-57 package provides a compact form factor suitable for space-constrained designs. Evaluate thermal resistance parameters to ensure adequate heat dissipation under continuous operating conditions.
Part Context
This device belongs to the BY203 series of fast avalanche sinterglass diodes from Vishay Semiconductors. The series includes variants with different reverse voltage ratings, such as 1600 V and 2000 V options. All members share similar physical dimensions and electrical performance profiles tailored for high-frequency applications.
Replacement Considerations
Consult official substitution lists or datasheets for compatible alternatives. Verify pinout compatibility and thermal characteristics when considering cross-brand replacements.
FAQ
What is the maximum non-repetitive peak forward surge current?
The maximum non-repetitive peak forward surge current is 20 A.
What is the reverse recovery time specification?
The reverse recovery time is 300 ns.
