H11A1 Transistor output optical isolator

The H11A1 is a transistor output optical isolator (also known as an optocoupler) designed to provide electrical isolation and signal transmission between different sections of an electronic circuit. This device consists of a gallium arsenide infrared LED optically coupled to a silicon phototransistor. The H11A1 offers high voltage isolation and reliable performance, making it suitable for various applications such as signal isolation, level shifting, and interfacing between different voltage domains.

Key Features:

• Transistor output optocoupler
• High voltage isolation: 5300 Vrms
• High current transfer ratio (CTR)
• Fast switching speed
• Low input current
• Compact 6-pin DIP package

Technical Specifications:

• Isolation Voltage: 5300 Vrms for 1 minute
• Collector-Emitter Voltage (VCEO): 30V
• Emitter-Collector Voltage (VECO): 7V
• Input Forward Current (IF): 60 mA (max)
• Collector Current (IC): 50 mA (max)
• Current Transfer Ratio (CTR): 50% to 600% (at IF = 10 mA, VCE = 5V)
• Rise Time (tr): 2 μs (typical)
• Fall Time (tf): 3 μs (typical)
• Package: 6-pin DIP
• Operating Temperature Range: -55°C to +100°C

Applications:

• Signal Isolation: Provides electrical isolation in signal transmission for data communication and control systems.
• Level Shifting: Converts signal levels between different voltage domains in mixed-voltage systems.
• Switching Power Supplies: Ensures safe feedback control in switching power supply designs.
• Microprocessor Interfaces: Protects microprocessors from high voltage transients and noise by providing isolation.
• Industrial Control Systems: Used in industrial automation and control circuits for safe signal transmission.
• Consumer Electronics: Provides isolation in various consumer electronic devices for safety and performance.

Datasheet:
For detailed technical information, refer to the H11A1 Datasheet.