This document describes the features and characteristics of the fast avalanche sinterglass diode produced by Vishay Semiconductors. It is suitable for fast rectification and switching in TV-line output circuits and switch mode power supplies.
The BY203‑12S, BY203‑16S and BY203‑20S are fast avalanche sinterglass diodes offered in a hermetically sealed SOD‑57 glass package. They are lead‑free, RoHS‑compliant, and intended for fast rectification and switching in TV‑line output circuits and switch‑mode power supplies.
The document lists mechanical dimensions, electrical characteristics, maximum ratings, and typical performance curves, and also includes Vishay’s environmental policy and legal disclaimer regarding product use and liability.
| Average forward current (I_F) | 250 mA |
|---|---|
| Junction temperature range | -55 °C to +150 °C |
| Package | SOD‑57 sintered glass case |
| Weight | ≈ 369 mg |
| Lead‑free / RoHS compliant | Yes |
The BY203‑12S diode is rated for a reverse voltage of 1200 V.
Yes, they are lead‑free and meet RoHS 2002/95/EC requirements.
The diodes can be mounted in any position.
Each diode weighs approximately 369 mg.