KINGBRIGHT KB817-B Optocoupler, 1 Channel, 4-Pin SMD DIP, 5kV, 50% CTR

The KINGBIGHT KB817-B is a high-performance, 1-channel, 4-pin general-purpose optically coupled isolator. It features a gallium arsenide (GaAs) light-emitting diode optically coupled to an NPN silicon phototransistor, providing reliable signal transmission between circuits of different potentials and impedances.

Designed for surface mounting, this optocoupler features a gull wing lead forming type and a 2.54mm lead pitch, making it ideal for automated assembly processes. With a high isolation voltage of 5kV and a solid insulation thickness of ≥0.6mm between the emitting diode and the output phototransistor, it ensures robust electrical isolation and operational safety.

Key Features & Specifications

• High Isolation Voltage: 5kV for excellent circuit protection
• Surface Mount DIP: Gull wing lead forming for easy PCB mounting
• Forward Current: 50mA maximum
• Total Power Dissipation: 200mW
• Current Transfer Ratio (CTR): 50% minimum
• Collector Emitter Voltage: 35V
• Moisture Sensitivity Level: MSL-4
• Lead Pitch: 2.54mm

This versatile component is highly suited for a wide range of electronic applications, including industrial controls, signal processing, and computer peripherals. Its dependable performance makes it an excellent choice for engineers designing systems that require secure and stable signal isolation.