Questions tagged [esd]
ElectroStatic Discharge, it's caused by accumulation of electrostatic charge as a result of rubbing, and can damage semiconductor devices like integrated circuits.
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What should be distance (gap) between Pack+ input and GND?
There is a BQ4050 battery management IC and its reference design schematic. In the below image, there is a spark gap symbol I think labeled as E2, E3, and E4 between battery inputs and GND. I want to ...
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ESD protection device selection
I want to select a ESD protection IC for my circuit with the following conditions:
Battery based and ultra-low-power
Battery voltage 3.6 V
My sensitive chips inside my circuit has Absolute Maximum ...
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Is a 3D printed motherboard case ESD safe enough?
I am developing and 3D printing a case for the development boards (PYNQ) we use at our university. However, I have read online that PLA is quite bad for ESD protection. I found products for anti-ESD ...
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Metal chassis grounding with wall wart supply, ESD test failed
We're building a device which takes its input power from a 12VDC wall wart PSU, and has a metal chassis. We just passed preliminary EMC/EMI test, but in the ESD test an 8kV jolt to the chassis killed ...
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Possible capacitive coupling on soldering iron
I have bought a cheap soldering iron. It seems to work fine.
Out of curiosity I tested the metal enclosure (and thus also the tip) with an electric tester and it lit up. Then I tested it with a multi-...
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Bonding yourself via oscilloscope GND?
I want to prevent ESD and I read that connecting the wrist band to i.e. USB ground is not a good idea. My oscilloscope has a test output where I would like to connect the aligator clamp of the ESD ...
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Protecting Circuit - ESD
I'd like to know on how to select the transient protection circuit components for my Ethernet Interface.
I saw a reference design that uses a pair of UCLAMP3301D and 2.2Ω series resistors to the jack ...
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Padding between USB and panel
Our product has a hole on the metal panel for the USB2.0 type B port. However, due to the mechanic size variation, on some panels, the USB connector can't touch the panel at all. As indicated in the ...
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Use of internal PCB ground plane as ESD baseplate/EMC reference plane of product in plastic enclosure
I am designing an electronic product which will be housed in a plastic (non-conductive) enclosure. There are a number of, mostly shielded, I/O cables (Copper 10/100/1000Mb/s Ethernet, USB 2.0, RS232, ...
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Grounding ESD Table
I work in a manufacturing plant and we are setting up new ESD benches. Essentially, the table is grounded to the ceiling of the building and then multiple work benches are connected to that bench with ...
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ESD on two different materials
I am conducting ESD testing on two types of materials with a setup that closely follows the 61000-4-2 standard. We have incorporated both isolation material and a ground plane into our setup.
When I ...
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Power input surge protection
I've seen power protection that uses:
MOV (metal-oxide varistor)
Inductor
TVS diode
Application Note: Transient Voltage Suppressors (TVS Diode)
Applications Overview
I didn't see any design guide ...
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Is the blue Weller WECP-20 ESD safe? [closed]
There are two Weller WECP-20 soldering stations. One blue and one black.
The black one has a label "ESD SAFE" and the blue have no ESD label at all. But is the blue Weller WECP-20 still ESD ...
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SPI device stops working when integrating Schmitt triggers and ESD diodes
I am integrating a BME680 temperature, pressure and humidity sensor using SPI.
When I only use 33 Ohms series resistors, the system works fine. However, when adding Schmitt triggers (NL27WZ17DFT2G), ...
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ESD knocking out PHY on device with unisolated POE
I inherited this design, one problem I am having is ESD on the chassis knocks out the PHY, sometimes it can't even be reset via software. I am curious if anyone can spot any glaring errors with the ...
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