The PS2501A-1 is a single-channel optocoupler manufactured by NEC (now Renesas Electronics). It is designed to provide electrical isolation between different parts of a circuit. This is achieved by using an LED to transmit a signal across an insulating barrier to a phototransistor. The device comes in a standard DIP-4 package.

Applications

• Isolation in power supplies
• Signal isolation in industrial control systems
• Interface between different voltage levels
• Noise isolation in sensitive electronic equipment
• Microcontroller input isolation

Features

• High Isolation Voltage: Provides a high level of electrical isolation between the input and output.
• CTR (Current Transfer Ratio): Offers a good current transfer ratio, ensuring efficient signal transmission.
• Compact DIP-4 Package: Allows for easy integration into circuit boards.
• High-Speed Switching: Capable of relatively fast switching speeds.
• Low Input Current: Requires a low input current for activation, making it compatible with a wide range of circuits.

Benefits

• Enhanced Safety: The high isolation voltage protects sensitive circuits from high voltage spikes and surges.
• Noise Immunity: Reduces noise and interference in sensitive electronic equipment.
• Simplified Circuit Design: Simplifies the design of isolated circuits.
• Reliable Performance: Provides stable and reliable signal transmission.
• Wide Compatibility: Compatible with a broad range of electronic circuits.

Additional Details

The PS2501A-1 optocoupler is commonly used in applications where electrical isolation is necessary to protect sensitive components or to prevent ground loops. It can isolate high and low voltage sections of a circuit, ensuring that a high voltage event on one side does not damage components on the other side. The DIP-4 package simplifies the mounting process on PCBs.

Technical Specifications:

• Package Type: DIP-4
• Isolation Voltage: Typically 5000 Vrms
• Current Transfer Ratio (CTR): Typically varies depending on the specific variant (e.g., 50% to 600%)
• Forward Current (IF): Typically around 20mA
• Collector-Emitter Voltage (VCEO): Typically around 80V