Structure and interface specifications of headphone jacks-JINBEILI ELECTRICAL

Your professional supplier of electronic switches, sockets, and connectors!

Dongguan Jinbeili Electrical Technology Co., Ltd.

Inquiry Message

Home

Back to List

Structure and interface specifications of headphone jacks

Dec 01,2022

　　Headphone jacks are widely used in the electronics industry, but with the increasing demand for headphone jacks, the losses caused by their use are also significant. I believe this may be due to a lack of understanding of the differences in headphone jack structure and connector specifications, leading to these losses. Let's explore the structural components and interface specifications of headphone jacks!

　　Headphone Jack Structure

　　Headphone jacks generally consist of a multi-contact and jack structure, mainly including the headphone jack, socket, and conductive plates. The headphone plug has a central plunger, with auxiliary plungers on either side. Two or more sets of metal sheets are located on the sides of the auxiliary plungers. However, the headphone jack has a central circular hole, which serves as the connection point for the headphone plug pins. The conductive plates of the headphone jack also have curved contact points that contact the metal sheets on either side of the auxiliary plungers, forming effective conductive contact for transmission. However, the headphone jack also has auxiliary jacks on either side, specifically designed for the auxiliary jacks. Inside the auxiliary headphone plug insertion hole, there are two corresponding conductive plates.

　　Headphone Jack Connector Specification Differences

　　Current headphone jack connector specifications stipulate a concentric connector using the wired headphone connector for mobile phones as the standard specification, including the plug side and the jack side. The phone side requires the use of the plug side. In addition, based on the diameter of the connector, two types of connectors are specified: 2.5mm and 3.5mm headphone jacks. Furthermore, to distinguish mobile phone headphone plugs, the mobile phone headphone jack connector has a unified standard concentric connector. Currently, commonly used headphone jack connector standards include 2.5mm, 3.5mm, and 6.5mm.

　　Precautions for Installing Headphone Jacks

　　1. The installation and wiring methods for current headphone jacks are largely the same as those for general tactile switches. Before installation, be sure to disconnect the power and follow the wiring instructions on the label. Organize the wires to avoid short circuits that could damage the headphone jack. Do not directly connect the headphone jack circuit to the terminal.

　　2. Current headphone jacks have an automatic power-off function, mainly due to the significant difference in the effective waveform of the load input voltage in standby and power-on states, which can stop the task. The effective waveform of the load in standby state refers to the proportion of the relative value greater than the threshold within a cycle. The effective waveform part of the load device in the power-on state refers to using only one trigger connected to a monostable circuit in a cycle, outputting a low level in a steady state. Therefore, regarding the installation and use of headphone plugs, short-circuit operation of the headphone plug circuit is strictly prohibited.

key word:

Waterproof TYPE C process characteristics

What are the advantages of headphone jacks?