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ONSEMI HMHA281R2 Optocoupler Module

The HMHA281R2 is a single-channel, 4-pin DC input half-pitch phototransistor optocoupler. It features a gallium arsenide infrared emitting diode coupled with a silicon phototransistor, with a lead pitch of 1.27mm for space-efficient mounting. This device is suitable for digital logic inputs, microprocessor interfaces, twisted-pair line receivers, and telephone line reception. It supports a continuous forward current of up to 50mA and a reverse input voltage of 6V. Applications include power management, signal processing, and industrial systems. Due to high market demand, delivery times may be extended, and product availability is subject to change. Discounts are not applicable.

Authorized Distributors
Source:Newark
Part No:HMHA281R2
Stock:458
Inv Date:06-10-2026
Price: Unit price: $0.721
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Source:DigiKey
Part No:HMHA281R2
Stock:40000
Inv Date:06-10-2026
Price: Unit price: $0.27572
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Part No:HMHA281R2
Stock:6660
Inv Date:06-11-2026
Price: Unit price: $0.7
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Part No:HMHA281R2
Stock:2500
Inv Date:06-10-2026
Price: Unit price: $0.1949
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Part No:HMHA281R2
Stock:2500
Inv Date:06-10-2026
Price: Unit price: $0.1949
Buy/RFQ:
Part No:HMHA281R2
Stock:0
Inv Date:06-10-2026
Price: Unit price: $0.141
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Source:Arrow EU
Part No:HMHA281R2
Stock:2490
Inv Date:06-11-2026
Price: N/A
Buy/RFQ:
Part No:HMHA281R2
Stock:1347
Inv Date:06-11-2026
Price: N/A
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ONSEMI HMHA281R2 Optocoupler Module Specifications:

  • Lead Pitch: 1.27mm
  • Number of Pins: 4
  • Maximum Standoff Height: 2.4mm
  • Drive Current: 50mA max
  • Reverse Input Voltage: 6V
  • Isolation Voltage: 3750 VRMS
  • Collector-Emitter Voltage: 80V
  • Collector Current: 50mA
  • Power Dissipation (Emitter): 60mW
  • Power Dissipation (Detector): 150mW
  • Operating Temperature Range: -55°C to +100°C
  • Storage Temperature Range: -55°C to +125°C

Buy the Fairchild HMHA281R2 – Reliable Phototransistor Optocoupler for Industrial Applications

Enhance your electronic systems with the Fairchild HMHA281R2 optocoupler, featuring a compact 4-pin package and gallium arsenide LED for efficient signal isolation. Perfect for digital logic inputs, microprocessor interfaces, twisted-pair line receivers, and telephone line applications, this device supports a maximum of 50mA forward current with outstanding electrical integrity. With a lead pitch of 1.27mm, it ensures space-efficient mounting in compact circuits. Ideal for industrial, power management, and signal processing applications, this reliable component enhances system performance and safety, readily available for online purchase.

Buy Fairchild HMHA281R2 now and experience unmatched reliability and performance in signal isolation and power monitoring.

Frequently Asked Questions

Where can I buy ONSEMI HMHA281R2?

You can click on the BUY or RFQ button to purchase HMHA281R2 from an authorized ONSEMI distributor.

How do I troubleshoot issues or seek technical support for part HMHA281R2?

You can download the HMHA281R2 datasheet or visit the ONSEMI website for support.

Who is the manufacturer of HMHA281R2?

ONSEMI

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