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Your work room is 20% humidity, you walk across the carpeted floor, sit in a poly foam padded chair and may have created static voltage over 20,000 volts. What could be problem?
Starting bottom up, common ground connected to ESD Protective Floor or Mat. Square box is work bench. Above bench is ESD Protective Table Top using ESD Protective Trays for parts. Top is ESD wrist strap with at least 250 K resistance, (1 Megohm in one I tested) with easy disconnect strap. Wrist strap, table top, and floor or Mat is all connected to common ground of workshop.
General overview.
A person at less than 4,000 static volts cannot see, feel, or hear static charge and is unaware of over-stress damage to ESD parts is happening.
Have all soldering irons hard grounded with transformer isolation from power line.
Touch all tools to grounded surface before use, even test probe leads.
Keep static generators away such as Styrofoam cups, candy wrappers, or non- conductive tote tool boxes.
Keep Relative Humidity in 40 to 60% range as big help on keeping static build up down.
What are some ESD sensitive devices? VMOS, MOFET, GaAsFET, SAW, Op-amp, CMOS, Schottky diodes, Film Resistors, Bipolar transistors, SCR.
No power on ESD sensitive device during placement or removal from circuit.
Learning good habits at start can reduce damaged part projects later. Damage can start at 30 volts static electricity so learn the proper handling.
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