Anti-static cordless wrist strap is light and compact, is it better than having a rope?
Many people choose to wear anti-static wrist straps when they are entangled with ropes, or cordless, and most people think that cordless is light and compact, it will be better. Is this the case? In fact, there are many anti-static wrist straps on the market. Divided into anti-static corded wrist straps and cordless wrist straps, what is the difference between the two?
Anti-static corded wrist strap The stretchable curved grounding wire is connected to the inner surface of the wrist strap. The material of the grounding wire is the conductor. The inner surface of the wrist strap is a conductive material (conductive fabric or conductive rubber), and the outer surface of the anti-static wrist strap. It is an insulating or dissipative material. One end of the grounding wire is connected in series with a 1MΩ current limiting resistor and connected to the wrist strap buckle, and the other end can be connected to the EBP (ESD grounding point). The grounding wire is connected in series to ensure that the operator does not cause personal injury when accidentally touching the high voltage. The principle of selection of the resistor is to ensure that the current flowing through the human body when the operator touches the high voltage is not more than 5 mA. It is necessary to ensure that the static electricity carried by the human body can be quickly discharged through the resistor, so that the static electricity on the skin is less than 100V, and the resistance value of the resistor is generally taken as 106Ω.
The anti-static cordless wrist strap adopts the principle of tip discharge. When the accumulated charge exceeds a certain value, the potential difference is discharged to the space, thereby achieving the purpose of eliminating static electricity. It usually requires a voltage of more than 1500V, and its tip part discharges air to dissipate static electricity. However, the static voltage required for dissipating static electricity in a cordless wrist strap is too high, which is not suitable for the electronics industry because of the number of electronic components. Can withstand high pressure above 1500V.
In summary, in the electronics industry and precision industry, we recommend the use of anti-static corded wrist straps. Use it well, then it will play an infinite role.