The STX-3120 series phone jack connector from Kycon, Inc. is a female connector with 3 conductors and 5 contacts. It has an actual diameter of 0.142" (3.60mm) and is designed for stereo signal lines (3 conductor, TRS). This connector is commonly used in audio applications, such as headphones, microphones, and audio cables. It provides a reliable and secure connection, ensuring high-quality audio transmission. The STX-3120 connector is available in bulk packaging, making it suitable for both professional and DIY projects. With its durable construction and excellent performance, this connector is a popular choice among audio enthusiasts and professionals.