There are many types of infrared receiving heads, and the definition of pins is also different. Generally, there are three pins (power supply feet, grounding and signal output pin). The receiving header of the corresponding mediation frequency shall be selected according to the different transmitting load. Then pay attention to those problems when using. Let's summarize the following. 1.) Oblaivium size, pin position, and packaging process: Some commonly used products should pay attention to their pins differences, and manufacturing processes. Generally, the products that press the mold process are stronger. In addition The iron shell. 2.) current: 0.5mA, 0.8mA, 1MA, 1.2MA, 2mA, 3MA, Taiwan Jinghan's receiving header can achieve 3MA. 3.) Voltage: The voltage received by the infrared head is divided into wide voltage and single voltage. Generally, the single voltage is 5V and 3.5V.

4.) distance: 5m 8m 10m 12m 16m 16m 20m 25m 28m 35m 70m. Generally, the shorter the distance, the lower the price. 5.) Point length and angle: 16mm, 21mm, 25.5mm angle 30, 45, 60, generally the impact of receiving angle on the product, so most products now receive 45 ° receiving. 6.) Receive frequency: 38kHz, 36kHz, 40kHz, 32.7kHz, 56kHz, 20KHz usually use 38kHz on remote control, and 20kHz is used on 3D glasses. It is also important to choose different frequencies according to the situation. 7.) Work temperature: -30 ℃ -85 ℃ 8.) Welding temperature and time: 260 ℃ (240 ℃) ≤5SEC, the welding temperature and time are too high, and too long will have serious consequences of the original.