The VOS615A-4 is a high-isolation single-channel phototransistor optocoupler from Vishay Semiconductors. It consists of an infrared emitting diode (IRED) optically coupled to a silicon NPN phototransistor. The device is packaged in a 4-pin DIP package. The optocoupler is designed to provide electrical isolation between input and output circuits, protecting sensitive control systems from voltage spikes and noise.

Applications

• Industrial control systems
• Power supplies
• Telecommunications equipment
• Medical equipment
• Digital logic inputs

Features

• High isolation voltage (typically 5300 VRMS)
• CTR (Current Transfer Ratio) of typically 50-600%
• Compact DIP-4 package
• High collector-emitter voltage (80 V)
• Compliant to RoHS directive 2002/95/EC and in accordance to WEEE 2002/96/EC

Benefits

• Enhanced system safety due to high isolation voltage
• Improved signal integrity by eliminating ground loops
• Protection of sensitive circuits from high voltage transients
• Space-saving design due to compact package
• Reliable performance in harsh industrial environments

Specifications

The VOS615A-4 optocoupler features a forward current (IF) rating typically around 60mA, and a collector-emitter voltage (VCEO) of 80V. The isolation voltage is a key specification, typically around 5300 VRMS. The current transfer ratio (CTR) varies, but is within the range of 50-600%. For detailed specifications, refer to the Vishay Semiconductors datasheet for the VOS615A-4.