The importance of anti-static wrist straps in electrostatic protection
Newly opened factories and laboratories with relatively concentrated manual operations, customers who need anti-static wrist straps are not small, but customers who come to inquiry are often only concerned about the price, and do not measure the required product quality from the static protection standards. Anti-static wrist strap material on the market, the performance is not well understood, and even confused by some cheap prices, in fact, when buying any product, be sure to understand the product, especially for some functional products. Don't just look at the appearance, you have to make a substantial comparison, in order to buy what you need for the production line, for the anti-static wrist strap! There are many anti-static wrist straps in different grades in the market, ranging from cheap ones to more than 20 yuan, but many customers only want to buy cheap anti-static wrist straps. You can judge the anti-static wrist straps. The structure and the labor cost during assembly are not difficult to judge. What kind of material can be used for the anti-static wrist strap of a large price? I often hear the customer feedback wearing an anti-static wrist strap, and the worker can also measure when operating. With a few thousand volts of static voltage coming out, the low-quality anti-static wrist strap can not meet the ESD standard requirements, nor can it discharge static electricity normally for a limited time, and it will not work at all.
The function of the anti-static wrist strap is to introduce static electricity into the earth through a static grounding wire through a 1 megaohm resistor and wire in the plastic box on the wristband. The series resistor is mainly used for personal safety to discharge static electricity, so as to avoid Instantaneous high current impact on components, to avoid component damage, with copper wire anti-static wrist strap working principle: human skin and direct contact with the static conductive material on the wrist strap, when the wrist strap is grounded, the human body through the grounding system The static electricity generated by the movement is quickly released; indicators: rubber plate type (white yarn / black yarn); static discharge time: less than 0.1s. The copper wire anti-static wrist strap is a high-end wrist strap with an "ohm" logo. The copper wire anti-static wrist strap is composed of an elastic band or a Velcro ring, a metal ring, a rubber ring, a slingshot line, and an alligator clip. It has the characteristics of fast transmission (S<0.1 sec), durability (curve bending resistance of 30,000 times), safety (built-in 1MΩ limiting resistor), and repeated cleaning.