What is meant by electrostatic
Caution electrostatic discharge: ESD
You don't make an ESD connection yourself.
It can be life threatening.
For people who are directly earthed, contact with live parts can be fatal.
Cables with alligator clips are also questionable.
Best is one Earthing contact dummy plug.
There are three measures we can take to avoid electrostatic discharge.
- By equipping the workplace
- By using suitable packaging
Equipment of the workplace
- Untreated wood has similar properties to high-resistance work mats.
- Cotton clothing does not generate static electricity.
- Plastic carpets are problematic.
- Plastic floors such as vinyl coverings or floors are problematic.
- Even wooden panels on the plastic floor do not help.
- A. high resistance grounded Wooden plate on the plastic floor helps.
- Chairs with a plastic surface are unfavorable.
- Office chairs with castors on plastic floors are particularly unfavorable.
- Tools with an ESD coating are advantageous.
- Tweezers with an ESD coating should be used.
- the grounding via a 1MΩ resistor should not be done by yourself.
- Because the smallest mistake can endanger life.
- A protective contact dummy plug with 3x 10mm push-button connections costs around € 10.
- Store components in ESD packaging
- Plastic film with a very thin metal coating
- look metallic or pink
- or store in ESD foam
- look black or pink
- No wayAdhesive films use like tape
- or in special IC packaging
- Plastic bags and boxes are unsuitable
- Metal boxes are unsuitable
- Paper and cardboard - no high gloss
Suggestion for the equipment
- Untreated plywood worktop
Good ESD equipment
- Earthing contact dummy plug with 3x 10mm push button connections
- Tweezers with ESD coating
- Worktop made of untreated plywood 5mm thick
- Connection to the dummy plug for ESD grounding
- For plastic floors, plywood 10mm
- Connection to the protective contact dummy plug for ESD earthing
- ESD wristband with 1MΩ resistance
- ideally connected directly to the protective contact dummy plug for ESD grounding
- A connection to the EDS worktop is not so cheap,
- although this is mostly offered.
The protective contact dummy plug shown in Figure 1 with three push buttons, each with its own protective resistor, is highly recommended. An ESD wristband with a spiral cable on an ESD mat is also shown.
- Store components at risk of ESD in ESD bags or in ESD foam.
- Plastic bags or plastic boxes are unsuitable, but so are metal boxes and aluminum foil.
- In a pinch, paper or cardboard will go
- First touch the wooden worktop,
- then the ESD bag with the component,
- in the case of MOSFETs, short-circuit the connections with a thin wire before removing them.
- Install the component, connect it, solder it in and only then remove the short circuit.
- This also applies to plug-in boards
- Touch the wooden worktop when getting up and sitting down.
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