The SFH618-3SMT+R is a high-reliability optocoupler manufactured by Isocom Components 2004 LTD. This device features a GaAlAs infrared emitting diode and a silicon phototransistor, providing galvanic isolation between the input and output. The '3SMT+R' designation signifies a specific CTR (Current Transfer Ratio) bin, surface mount packaging (SMT), and tape and reel packaging (+R) for automated assembly.

Applications:

• Industrial Automation: Isolation in PLCs, motor drives, and other industrial control equipment.
• Power Supplies: Isolation feedback control in SMPS.
• Data Communications: Isolating data lines in communication interfaces.
• Medical Equipment: Provides isolation barrier for patient safety.
• Test and Measurement Equipment: Galvanic isolation in measurement instruments.

Features:

• High Isolation Voltage: Provides a high degree of electrical isolation.
• Surface Mount Package: Suitable for automated assembly.
• Guaranteed CTR: Specified Current Transfer Ratio for consistent performance.
• High Collector-Emitter Voltage: Suitable for higher voltage applications.
• Tape and Reel Packaging: Optimized for automated placement equipment.
• RoHS Compliant: Lead-free and environmentally friendly.

Benefits:

• Enhanced System Reliability: Protects sensitive circuits from voltage transients and ground loops.
• Simplified Assembly: Surface mount package reduces assembly time and costs.
• Consistent Performance: Guaranteed CTR ensures predictable operation.
• Improved Safety: High isolation voltage enhances safety in high-voltage environments.
• Reduced Manufacturing Costs: Tape and reel packaging enables efficient automated assembly.

Technical Specifications:

The SFH618-3SMT+R features a high isolation voltage, typically around 5 kV RMS. The CTR is specified according to the '3' bin designation, consult the datasheet for precise values. The collector-emitter voltage is typically around 70V. The device operates over a wide temperature range. It comes in a small outline (SMD) package and is supplied on tape and reel.