113B

Series:	Hi-D® 11*
Packaging:	--
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Connector Type:	Phone Jack
Gender:	Female
Signal Lines:	Stereo
Industry Recognized Mating Diameter:	6.35mm (0.250", 1/4") - Headphone
Actual Diameter:	0.250" (6.35mm)
Number of Positions/Contacts:	3 Conductors, 4 Contacts
Internal Switch(s):	Single Switch
Mounting Type:	Panel Mount, Through Hole
Termination:	Solder Eyelet(s)
Shielding:	Unshielded
Features:	Mounting Hardware, Thread Lock
Insulation Color:	--
Voltage - Rated:	48VDC
Current Rating:	3A
Mating Length/Depth:	--
Contact Material - Plating:	Tin
Body Material:	Brass
Body Color:	Silver, Black
Includes:	3 pcs - 1 Connector, 1 Nut, 1 Washer
Housing Material:	Polyester, Glass Filled
Contact Material:	Brass
Cable Opening:	--
Panel Hole Size:	0.375" (9.52mm)
Thread Size:	3/8"-32
Operating Temperature:	-20°C ~ 65°C

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113B Barrel - Audio Connectors

113B barrel audio connectors are a type of audio connector used in sound recording and music production equipment. They are used to connect audio signals between various devices, such as microphones, amplifiers, mixers, and speakers. The 113B connector is a 3-pole, 2.5mm (diameter) female connector. It is commonly used in consumer audio and video equipment, and is most often seen on headphones.

History

The 113B connector was developed in the 1950s by a Swedish firm, Car-O-Liner. Car-O-Liner designed the 113B as a cost-efficient solution to the large variety of audio connectors that were commonly used at the time. It quickly became popular among musicians, sound engineers, and broadcasters, as it could accommodate many different types of audio signals without bulky cables.

Design and Construction

The 113B audio connector features three contacts: two round contacts on the end and one center "barrel" contact in the center. It has an outer diameter of 2.5mm, making it one of the smallest interchangeable audio connectors. The barrel contact is recessed, making it more secure and preventing accidental disconnections. It is made of an uninsulated conductive material, usually brass, with a thin plastic insulating sleeve around it.

Application Field

The 113B connector is commonly used for connecting microphones to mixers, speakers to amplifiers, and headphones to consumer audio equipment. It is also used in many consumer video devices, such as camcorders and DVD players. Additionally, it is used in studio sound systems, instrument amplifiers, PA systems, and intercom systems.

Working Principle

The 113B is a 3-pole audio connector, meaning that it has three electrical connections: positive, negative, and a floating ground. The center barrel contact is the negative connection, and the two round contacts are the positive and ground connections. The electrical signal passes through the center contact, and the ground contact is used to provide a clean, low impedance signal path. The floating ground eliminates the need for a separate shield wire, making the connector very versatile and reducing the number of wires needed to connect two devices.

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