2/18/2026 8:23:44 AM   By  Andrew  in

H11AA1 Transistor Output Optocouplers by Vishay Intertechnology

The H11AA1 is a highly reliable optocoupler designed to provide electrical isolation between input and output circuits while maintaining stable signal transfer. Featuring a transistor output and dual LED input configuration, this device is widely used for AC line sensing, signal isolation, and noise suppression in industrial and consumer electronics.

Belonging to Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers, the H11AA1 ensures safe system protection and consistent performance. Genuine components are available worldwide from www.xonelec.com, x-on electronics, and xon electronics.


Technical Specifications of H11AA1


Manufacturer: Vishay
Part Number: H11AA1
Type: Transistor Output Optocoupler
Category: Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers
Input Type: Dual LED (AC input compatible)
Output Type: Phototransistor
Isolation Voltage: High isolation rating
Mounting Type: Through Hole (DIP)
Operating Temperature: Industrial range

The H11AA1 provides safe galvanic isolation and dependable switching characteristics.


Key Features of H11AA1 Optocoupler


• Dual LED input for AC signal detection
• Transistor output for flexible interfacing
• High isolation voltage for safety
• Low power consumption
• Compact DIP package
• Long-term reliability

As part of Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers, it offers strong electrical separation and reduced interference.


Applications of H11AA1


The H11AA1 Transistor Output Optocouplers are widely used in:

• AC mains sensing
• Microcontroller input isolation
• Industrial PLC systems
• Power supply feedback circuits
• Motor control boards
• Smart meters
• Home appliances

Engineers prefer Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers for protecting low-voltage logic from high-voltage environments.


Electrical Performance & Reliability


The H11AA1 delivers:

• High noise immunity
• Stable current transfer ratio (CTR)
• Fast switching response
• Excellent isolation protection
• Long operating life

These benefits make Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers essential for safe and stable signal transmission.


Pin Configuration & Connection Overview


Typical DIP pinout:

Input LED terminals
Output transistor collector
Output transistor emitter

Correct orientation ensures safe isolation between control and power circuits.


Also Available from Other Manufacturers


Equivalent Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers are also available from:

Everlight Electronics
Isocom Components
ON Semiconductor

Multiple sources ensure flexible procurement and design continuity.


Download Datasheet


For full CTR curves, switching characteristics, isolation ratings, and package dimensions:

Download the H11AA1 datasheet directly from www.xonelec.com for complete technical documentation H11AA1 Datasheet.


Why Buy from www.xonelec.com?


x-on electronics and xon electronics provide:

• 100% genuine Vishay optocouplers
• Competitive pricing
• Bulk availability
• Fast worldwide delivery
• Secure ordering
• Reliable technical support

A trusted supplier for Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers and other components.


Conclusion


The H11AA1 Transistor Output Optocouplers by Vishay combine high isolation, stable transistor output, and compact packaging for dependable circuit protection. As proven Optoelectronics, Optocouplers / Photocouplers, Transistor Output Optocouplers, they are ideal for industrial, consumer, and embedded electronics requiring safe signal isolation.


FAQs – H11AA1


Q1. What type of output does H11AA1 have?
Phototransistor output.

Q2. Can it detect AC signals?
Yes, it features dual LEDs for AC input sensing.

Q3. Is it through-hole or SMD?
Through-hole DIP package.

Q4. Why use an optocoupler?
For electrical isolation and noise protection.

Q5. Where can I purchase it?
Available at www.xonelec.com with global shipping.




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