White Y213 2 * 14mm clarinet, normally open type（ Dimensions marked (excluding pins)

Dry reed is the abbreviation of dry reed. It is a kind of passive electronic switch element with contact. It has the advantages of simple structure, small volume and easy control. Its shell is generally a sealed glass tube, in which there are two iron elastic reed plates, and also filled with a kind of inert gas called rhodium. Usually, the two reeds made of special materials in the glass tube are separated. When the magnetic material is close to the glass tube, under the action of the magnetic field line of force, the two reeds in the tube are magnetized to attract and contact each other, and the reeds will be attracted together to connect the circuit connected to the node. After the external magnetic force disappears, the two reeds are separated due to their own elasticity, and the circuit is disconnected. Therefore, as a kind of circuit switching device controlled by magnetic field signal, the reed can be used as a sensor for counting, limiting and so on (mainly used in the production of door magnet and window magnet in security system), and it is also widely used in various communication equipment. In practice, the permanent magnet is usually used to control whether the two pieces of metal are connected or not, so it is also called "magnetron".

Characteristics and application of clarinet:

1. The dry reed tube has compact structure and small weight, and can be installed in extremely limited space, which is very suitable for miniaturization equipment.

2. The switch components of dry reed are hermetically sealed in an inert gas atmosphere, which will never contact with the external environment and has a long working life.

3. There is no sliding element in the dry reed, so there is no metal fatigue phenomenon related to all metal degradation, which ensures the unlimited mechanical service life.

4. Magnetic reed switch has been widely used in mobile phones, program-controlled exchanges, copiers, washing machines, refrigerators, cameras, disinfection cupboards, door magnets, window magnets, electromagnetic relays, electronic weighing instruments, liquid level meters, gas meters, water meters, etc.

Precautions for use of clarinet:

1. Extreme care must be taken when cutting or bending the lead pins of the clarinet to avoid damage to the glass metal seal due to improper stress. Proper clamping tools are necessary

2. The glass metal seal may be damaged (cracking, leakage, etc.) when exposed to temperature and too long exposure time, so fast and reliable welding technology (process) must be adopted. The recommended welding condition is 280-300 for manual welding ° C. Wave soldering time 250 to 300 ° C。