There are several standards for the 3.5mm headphone jack

There are two main standards for 3.5 mm headphone jacks: TRS three-pole plug (stereo) and TRRS four-pole plug (stereo microphone). A TRS plug has three contacts (tip, ring, sleeve), while a TRRS plug has four contacts (tip, first ring, second ring, sleeve). Both plugs are widely used in devices such as smartphones, tablets, headphones, and microphones.

The standard for the 3.5 mm headphone jack

The 3.5 mm headphone jack is a standard for connecting audio devices Interface, there are two main standards:

1. Tip-Ring-Sleeve (TRS)

• Three-pole plug, used for stereo output and input.
• consists of three contacts: tip (left channel), ring (right channel), and sleeve (ground wire).

2. Tip-Ring-Ring-Sleeve (TRRS)

• Four-pole plug for stereo output, input and microphone.
• consists of four contacts: tip (left channel), first ring (right channel), second ring (microphone), sleeve (ground).

Features and uses

• TRS and TRRS plugs are commonly used with portable audio devices (such as smartphones, tablets) and peripherals such as headphones and microphones Device compatible.
• The TRS plug is used to transmit stereo audio signals, while the TRRS plug is used to transmit both stereo audio and microphone signals.
• 3.5 mm headphone jacks are widely used in a variety of electronic devices, including smartphones, laptops, MP3 players, and game consoles.

Note:

In addition to the TRS and TRRS standards, there are other less common 3.5mm headphone jack variants that are used for special purposes or specific devices .

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