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Vishay 4N28 Optocoupler

The 4N28 is a single-channel, 6-pin optocoupler with a phototransistor output and a base connection. It consists of a gallium arsenide infrared LED and a silicon NPN phototransistor, allowing it to interface with common logic families. The device is suitable for applications in signal processing, power management, and communications and networking.

Authorized Distributors
Source:Newark
Part No:4N28
Stock:1900
Inv Date:06-09-2026
Price: Unit price: $0.519
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Part No:4N28
Stock:1042
Inv Date:06-10-2026
Price: Unit price: $0.85
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Part No:4N28
Stock:0
Inv Date:06-10-2026
Price: N/A
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Source:DigiKey
Part No:4N28
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.39031
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Source:DigiKey
Part No:4N28
Stock:843
Inv Date:06-09-2026
Price: Unit price: $0.61
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Source:DigiKey
Part No:4N28
Stock:2584
Inv Date:06-09-2026
Price: Unit price: $0.44
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Source:DigiKey
Part No:4N28
Stock:332
Inv Date:06-09-2026
Price: Unit price: $0.61
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Part No:4N28
Stock:615
Inv Date:06-10-2026
Price: Unit price: $0.44
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Part No:4N28
Stock:6352
Inv Date:06-10-2026
Price: Unit price: $0.61
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Authorized Distributors
Part No:4N28
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.28
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Part No:4N28
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.2285
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Part No:4N28
Stock:17
Inv Date:06-09-2026
Price: Unit price: $0.842
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Part No:4N28
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.2285
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Part No:4N28
Stock:0
Inv Date:06-09-2026
Price: Unit price: $0.159
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Part No:4N28
Stock:10
Inv Date:06-10-2026
Price: N/A
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Source:Arrow EU
Part No:4N28
Stock:2000
Inv Date:06-10-2026
Price: N/A
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Part No:4N28
Stock:616
Inv Date:06-10-2026
Price: N/A
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Vishay 4N28 Optocoupler Specifications:

  • Isolation test voltage 5000 Vams
  • Creepage distance >7 mm
  • Clearance distance >7 mm
  • Isolation thickness between emitter and detector 04 mm
  • Comparative tracking index 175
  • Input forward voltage 1.3 to 15 V
  • Input forward current 60 mA
  • Collector emitter breakdown voltage 70 V
  • Emitter base breakdown voltage 7 V
  • Collector current 50 mA
  • Collector current (short pulse) 100 mA
  • Power dissipation 100-150 mW
  • Operating temperature -55°C to +100°C
  • Junction temperature 125°C
  • Soldering temperature (dist. 1.5mm) 260°C
  • Capacitance input-output 0.6 pF
  • Output collector-emitter breakdown 30 V
  • Isolation resistance >10^11 Ω at 500 V
  • CTR (Current Transfer Ratio) 20-50%
  • Switching times 2 μs rise and fall
  • Physical package dual-in-line 6 pin

Buy the Vishay 4N28 – Reliable Optical Isolator for Industrial Applications

Purchase the Vishay 4N28 optocoupler online today and enhance your signal isolation, communication, and power systems with our high-quality optical components. This reliable device features gallium arsenide infrared LED and silicon NPN phototransistor for excellent interface compatibility. Its 5000 Vams isolation voltage, fast switching times of 2 μs, and robust package ensure durability and high performance across industrial applications such as power supplies, signal processing, and networking. Order now for quick delivery and expert support.

Buy Vishay 4N28 now and experience unmatched reliability and performance in signal isolation and power management.

Frequently Asked Questions

Where can I buy Vishay 4N28?

You can click on the BUY or RFQ button to purchase 4N28 from an authorized Vishay distributor.

How do I troubleshoot issues or seek technical support for part 4N28?

You can download the 4N28 datasheet or visit the Vishay website for support.

Who is the manufacturer of 4N28?

Vishay

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