The BAS40S is a surface mount Schottky barrier diode manufactured by Won-Top Electronics. This diode is designed for applications requiring fast switching speeds and low forward voltage drop. Being categorized as END-OF-LIFE, it is important to recognize its characteristics when considering replacements or for legacy system maintenance.

Applications

• High-speed switching circuits.
• Reverse polarity protection.
• Clamping applications.
• DC-DC converters.
• Instrumentation.

Features

• Low forward voltage drop.
• Fast switching speed.
• Surface mount package (SOD-323).
• High surge current capability.
• Lead-free finish.

Benefits

• Efficient operation in high-frequency circuits.
• Protection against reverse voltage conditions.
• Voltage clamping to prevent damage to sensitive components.
• Compact design suitable for densely populated boards.
• Environmentally friendly due to its lead-free construction.

Technical Specifications

The BAS40S features a maximum forward voltage drop of 0.6 V at 40 mA, a reverse voltage rating of 40 V, and a continuous forward current of 200 mA. It has a fast reverse recovery time, typically less than 5 ns. The operating temperature range is typically from -65°C to +125°C. It is housed in a SOD-323 surface mount package. The surge current capability is specified to handle transient conditions.

Although the BAS40S is now an EOL component, its initial characteristics are crucial when searching for a suitable substitute. To select an appropriate replacement within existing designs or repair processes, consult the original datasheet to ensure adherence to required electrical specifications and application needs.