7Semi TRRS 3.5mm Audio Jack Breakout

The 7Semi TRRS 3.5mm Audio Jack Breakout is a compact and easy-to-use adapter board designed for interfacing 4-pole (Tip-Ring-Ring-Sleeve) 3.5mm audio jacks with microcontrollers, development boards, or audio circuits. It breaks out each contact of the TRRS connector to standard 2.54 mm header pins, allowing convenient prototyping for audio input/output or microphone and headset connections. Commonly used for stereo audio plus microphone signals, this breakout simplifies integrating audio functionality in embedded, IoT, and multimedia projects.

Technical Specifications:

• Connector Type: 3.5 mm TRRS (Tip-Ring-Ring-Sleeve) audio jack
  
• Contact Configuration: 4-pole connector (supports stereo + mic or stereo + video)
  
• Signal Mapping:
   – Tip: Left audio channel
   – Ring 1: Right audio channel
   – Ring 2: Microphone or video input/output
   – Sleeve: Ground
  
• Mounting Type: Through-hole, PCB-mounted breakout
  
• Header Pitch: 2.54 mm (compatible with breadboards and perfboards)
  
• Operating Voltage: Signal level (up to 3.3 V typical for audio circuits)
  
• Material: High-quality FR-4 PCB substrate
  
• Color: Green solder mask with white silkscreen labeling
  
• Operating Temperature: -40°C to +85°C
  
• Mechanical Durability: >5000 mating cycles

Features:

• Breaks out all 4 TRRS contacts to standard 2.54 mm header pins
  
• Compatible with stereo audio and microphone or composite video connections
  
• Ideal for use with smartphones, headsets, and audio-enabled development boards
  
• Supports both CTIA and OMTP pinout standards (depending on wiring configuration)
  
• Compact and durable design suitable for prototyping and integration
  
• Easy to interface with microcontrollers, audio ICs, or amplifiers
  
• Gold-plated contacts for superior conductivity and low signal loss
  
• Breadboard-compatible layout for quick testing and experimentation
  
• No soldering required for plug-and-play use in prototypes

Applications:

• Audio input/output interfacing for embedded systems
  
• Headphone, headset, and microphone connectivity projects
  
• Smartphone or tablet audio integration with microcontrollers
  
• DIY audio amplifiers and sound-based IoT devices
  
• Portable audio recording and playback systems
  
• Voice and speech recognition hardware prototypes
  
• Educational electronics projects involving analog or digital audio
  
• Testing and prototyping audio signal routing and level control