What are the factors to consider when selecting headphone sockets

There are a wide variety of earphone sockets in the market, and the first consideration is the use of the socket. Secondly, it is necessary to consider some elements of socket use, and use the socket reasonably to maximize the functionality of your product.

(1) The additional current value of the socket should be selected based on the nature of the load. When using a socket, the starting current is high. If the selected socket cannot withstand the impact of the starting current within the requested time, the socket contacts will show an arc, causing the socket contacts to burn together or damage the socket due to arc splashing.

(2) The voltage of the headphone socket application circuit should be less than the additional voltage of the socket.

(3) For sockets used for mains power, attention should be paid to their insulation resistance, and it is best to choose sockets with non-metallic operating handles.

(4) Because when the headphone socket is connected to the circuit, the quality of contact engagement directly affects the load of the circuit. Therefore, sockets with low touch resistance should be selected in circuit planning; When planning low-power circuits and when necessary, gold contact sockets should be selected.

(5) The selection of mechanical and electrical lifespans for headphone sockets should be based on the application scenario.

(6) In situations where the switch is frequently open, turned off, and the load is not high, the selection of the switch should focus on its mechanical lifespan; In situations where switches receive high power, the selection of switches should focus on their electrical lifespan.

Usage of headphone socket: Used for various digital voice information terminals such as mobile phone stereo planning, CD player, wireless phone, MP3 player, learning machine, DVD, digital camera, etc.

Standard clarification: Welding temperature 260 ± 5 ℃ for 10S, insertion and extraction force 3-20N, lifespan 5000 times, 3.5 headphone socket. Regarding wires made of certain materials, it generally refers to the acceptable current density, not the current strength. The acceptable current intensity varies for wires of different thicknesses.

The headphone socket is often indicated by an "L" followed by a number in the circuit, for example, L6 indicates the inductor with the number 6. Inductive coils are made by winding insulated wires on an insulated skeleton for a certain number of turns. DC can pass through the coil, and the DC resistance is the resistance of the wire itself, with a very small voltage drop;

When the communication signal passes through the coil, a self induced electromotive force will occur at both ends of the coil. The direction of the self induced electromotive force in the DC socket is opposite to the direction of the applied voltage, hindering the passage of communication. Therefore, the characteristic of the inductor is to communicate through DC resistance. The higher the frequency, the greater the impedance of the coil. Inductance can form an oscillating circuit with capacitance in a circuit.