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Product Variant Information section
Product Specification Section
Pricing Section

Stock: 0

On Order: 0
Factory Stock:Factory Stock: 0
Factory Lead Time: N/A
Minimum Order: 3,000
Multiple Of: 3,000
Quantity Web Price
3,000 $0.22
6,000+ $0.22


Attributes Table
No of Channels 4
Supply Voltage 2.5V to 4.4V
Features and Applications

The FSA8049UCX is a Part of FSA8049 Series audio jack detection switch for 3- or 4-pole accessories. The FSA8049 detects the locations of ground (GND) and microphone (MIC) poles on the audio plug and automatically routes them to the appropriate connections.

This allows the end user to plug accessories, such as headsets with different audio pole configurations, into the mobile device and have them operate correctly.


  • Detects 3- or 4-pole audio accessories
  • Detects polarity of GND and MIC on 4-pole plugs
  • Automatically routes GND and MIC to audio jack terminals


  • Cellular Phones, Smart phones
  • MP3 and Portable Multimedia Player