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Vishay SFH6343T High-Speed Transistor Optocoupler

The SFH6343T is a high-speed transistor output optocoupler with an infrared GaAlAs LED and an integrated photodetector, featuring a Faraday shield for transient rejection. Its open-collector output allows load adjustment for TTL and CMOS systems. Junction isolation reduces Miller capacitance, improving speed and noise immunity. The device supports surface mounting, operation at 0°C to 70°C, and includes safety ratings such as 4000 Vams isolation and compliance with IEC safety standards. Ideal for line receivers, ground isolation, and replacing pulse transformers in industrial and signal processing applications.

Authorized Distributors
Source:DigiKey
Part No:SFH6343T
Stock:2511
Inv Date:06-09-2026
Price: Unit price: $2.19
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Part No:SFH6343T
Stock:2393
Inv Date:06-10-2026
Price: Unit price: $2.18
Buy/RFQ:
Part No:SFH6343T
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.745
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Vishay SFH6343T High-Speed Transistor Optocoupler Specifications:

  • Package Type: SOIC-8 surface-mount
  • Isolation Test Voltage: 4000 Vams
  • Transfer Function: CTR 7-50% at 16 mA
  • Input Reverse Voltage: 3 V
  • DC Forward Current: 25 mA
  • Surge Forward Current: 1 A
  • Power Dissipation: 45 mW at 70°C
  • Output Voltage Range: -0.5 to 25 V
  • Output Current: Up to 8 mA
  • Common Mode Transient Immunity: 1-30 kV/μs depending on model
  • Operating Temperature Range: 0°C to 70°C
  • Soldering Temperature: Max 260°C for 10 seconds
  • Insulation Resistance: 2107 Ω at 500 V
  • Safety Ratings: 6000 V maximum transient isolation voltage, IEC 60747-5-5 compliance
  • Dimensions: 3.05 x 6.10 mm with standard SOIC-8 footprint

Buy the Vishay Series SFH Optocoupler: SFH6343T

Order the Vishay SFH6343T high-speed transistor output optocoupler online today and enjoy fast, reliable signal isolation with excellent transient immunity. The device is suitable for line receivers, logic ground isolation, and replacing pulse transformers in industrial automation, communication systems, and control electronics. Its open-collector design, junction isolation, and Faraday shield help minimize noise and transient disturbances. Designed for surface mounting, it enhances system reliability and performance while supporting vapor-phase reflow and wave soldering processes. Purchase now for seamless integration and long-term operational stability.

Buy Vishay SFH6343T high-speed transistor optocoupler now and ensure reliable electrical isolation with excellent noise immunity for industrial control and signal processing.

Frequently Asked Questions

Where can I buy Vishay SFH6343T?

You can click on the BUY or RFQ button to purchase SFH6343T from an authorized Vishay distributor.

How do I troubleshoot issues or seek technical support for part SFH6343T?

You can download the SFH6343T datasheet or visit the Vishay website for support.

Who is the manufacturer of SFH6343T?

Vishay

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