SMT carrier tape is a kind of carrier tape, which is mainly used in the field of electronic packaging. How to prevent SMT carrier tape from static electricity during production?

1、 Use anti-static materials: metal is a conductor, and the leakage discharge current of the conductor is large, which will damage the parts. In addition, insulating materials are prone to friction electrification, so metal and insulating materials cannot be used as anti-static materials. Surface resistance L × one hundred and five ω The following is called electrostatic conductor and surface resistance 1 × 105-1 × one hundred and eight ω As an antistatic material.

2、 Leakage and grounding: ground the part where static electricity may occur or occur, and provide static electricity release channel. The independent ground wire shall be established by embedding the ground wire.

3、 Elimination of conductor static electricity: the static electricity on the conductor can be leaked to the earth by grounding. The voltage and release time of the discharge body are generally required to leak static electricity within 1 second. That is, a safe area where the voltage is reduced below 1oov within 1 second. This prevents the SSD from being damaged by excessive leakage speed and excessive leakage current. If you want to make ut reach 100V within 1s, r = 1.28 × one hundred and nine ω。 Therefore, the electrostatic protection system usually uses 1m ω The current limiting resistor limits the discharge current below 5mA.