WMT389 vs M9177/2-1

Part Number
WMT389
M9177/2-1
Category Barrel - Audio Connectors Barrel - Audio Connectors
Manufacturer Switchcraft Inc. Amphenol Aerospace Operations
Description CONN JACK TWIN STEREO PNL MNT CONN PLUG 4COND TJ-101 U-174/U
Package - -
Series WMT-Jax? -
Features Grounding Tab -
Mounting Type Panel Mount Free Hanging (In-Line)
Termination Wire Wrap -
Connector Type Phone Jack, Twin Phone Plug
Shielding Unshielded -
Gender Female Male
Number of Positions/Contacts 2 Sets of 3 Conductors, 6 Contacts 4 Conductors, 4 Contacts
Signal Lines Stereo Multiple
Industry Recognized Mating Diameter 6.35mm (0.250", 1/4") - Headphone -
Actual Diameter 0.250" (6.35mm) 0.281" (7.14mm)
Internal Switch(s) 2 Sets of Two Switches Does Not Contain Switch
  • 1. What are the standard sizes for barrel audio connectors?

    The most common sizes are 1/4 inch (6.35 mm), 1/8 inch (3.5 mm), and 2.5 mm, with the size referring to the connector’s diameter.

  • 2. Are barrel connectors compatible across all devices?

    Not always. Compatibility depends on the device's connector type (TRS or TS), size (3.5 mm, 6.35 mm, etc.), and whether the device supports mono, stereo, or balanced audio.

  • 3. How can I identify a high-quality barrel audio connector?

    Look for features like gold-plated contacts for better conductivity, robust build quality, and proper strain relief to avoid cable damage.

  • 4. What is the difference between male and female barrel connectors?

    Male connectors: Have a protruding pin or plug.

    Female connectors: Feature a receptacle to receive the male connector.

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