The headphone jack is a very common type of connector in daily life, and its specifications may vary depending on the application device, with a common 3.5mm structure. Mainly used in mobile phone 3D design, CD players, wireless phones, MP3 players, digital laptops, DVDs, digital cameras and other devices.
Specification differentiation of headphone socket interfaces
The headphone jack is an interface used to connect headphones and audio source devices (such as mobile phones, computers, etc.). It is usually located on the side or bottom of the sound source device, and has different sizes and specifications according to different standards. Common standards include 2.5mm, 3.5mm, 6.3mm, and USB interfaces. According to the different types of pins, they can be divided into straight pins, curved pins, and wired pins.
The five characteristics of headphone sockets:
1： Earphone sockets often use L plus a number to indicate inductance parameters.
2： The headphone jack has a different structural design with high fidelity for each 5.1 channel audio.
3： Has multiple functional usage options.
4： There are DIP and SMT installation forms to choose from.
5： We can design different functional connection products according to customer requirements. Precautions for using headphone sockets
1. In cases where data transmission to the headphone jack is too fast, the contact resistance of the headphone jack will also change significantly, leading to a decrease in the operating voltage of the device and unstable voltage. Therefore, pay more attention to the safe use of the headphone socket when using it.
The selection of mechanical and electrical lifespan for headphone sockets should be based on the usage situation. In situations where the headphone jack is frequently plugged in and used, and is turned off with a high load, the mechanical lifespan of the headphone jack should be emphasized when selecting it.
When using headphone sockets, the rated current value of the socket should be selected according to the nature of the load. Because when the headphone socket is in operation, the starting current is very high. If the selected headphone socket cannot withstand the impact of the starting current within the required time, the contacts of the socket will arc, causing the headphone socket contacts to burn or arc splatter, resulting in damage to the socket.
4. During use, if the internal copper contacts of the headphone socket are poor, it will cause excessive current in front of the circuit, resulting in heating. If the quality of the headphone socket is poor, it will generally be burned out, and even cause accidents such as fires. So when choosing headphone sockets, it is important to pay attention to selecting high-quality sockets.
5. The voltage of the headphone socket applied in the circuit must be lower than the rated voltage of the socket, otherwise it may not be able to withstand excessive voltage and cause damage to the socket.
6. The quality of the internal metal contacts of the headphone socket directly affects the load of the circuit when it is connected to the circuit. Therefore, when selecting headphone sockets with low contact resistance, they can be used in some low-power circuits with metal contacts inside.