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Typical applications are EMC experiments, RF measurements, mobile military or forensic activities, and personal protection in the field. The standard Faraday tent is supplied with ropes, so that the tent can be suspended from the ceiling. Out of the same material that is used for our Faraday tents, we can also make electromagnetically shielded clothes. The cable entry sleeve can be used for entering shielded cables or already filtered cables. Typically the access point is provided with magnetic strips covered with electrically conductive layers of textile.
Worldwide leading manufacturer of EMC (electromagnetic compatibility), EMI (electromagnetic interference) and RFI(radiofrequency interference) shielding solutions. Keep up to date with the latest developments in Holland Shielding Systems BV by signing up for our newsletter. July 6, 2015 – The ESD Association estimates that 25% of all electronics damaged for unknown reasons can be attributed to ESD and the cost of ESD damage to the Electronics Industry to be $5 billion (USD) per year. ESD comes in many forms; it can be as small as 50 volts of electricity being equalized up to tens of thousands of volts. Catastrophic Damage: Once an electronic device is exposed to an ESD event, the device’s circuitry may be permanently damaged causing the device to fail.
The images below are of a forced 5,000 Watt ESD event performed on an IM LED at Universal’s APL. Latent Damage: A device that is exposed to an ESD event may be partially degraded, yet continue to perform its intended function. Latent damage may also allow the problem component to work for hours, days or even months after the initial damage before catastrophic failure.
ESD can be prevented by integrating Electrostatic Discharge Protected Areas (EPAs) into your manufacturing process.
ESD prevention within an EPA may include using appropriate ESD-safe packing material, the use of conductive filaments on garments worn by assembly workers, requirement of *wrist straps and foot-straps to prevent high voltages from accumulating on workers’ bodies, anti-static mats or conductive flooring materials to conduct harmful electric charges away from the work area, and humidity control.
It does no good to take ESD prevention steps if the parts are being damaged while storing or carrying them. A Faraday cage or Faraday shield is an enclosure formed by conductive material or by a mesh of such material.
An ESD bag surrounds the component with a conductive shield, and usually has a non-static generating insulative layer inside. ESD can be a minor unfelt event measuring a few volts, or a massive event presenting real dangers to operators. Press ReleasesUniversal Introduces High-Volume Hot Bar and DIMM Solutions to China Market at NEPCONHigh-powered innovations facilitate efficient volume production for fast-growing markets.

By default the Faraday tents are delivered with multiple ropes so they can be easily attached to a ceiling, or they can come with a self-standing frame.
Faraday tents offer a mobile solution for only a fraction of the cost compared to a conventional Faraday cage. Mounting ropes are generally used when the Faraday tent is installed inside a building in a permanent location.
Black powder manufacturing and other pyrotechnic industries have always been dangerous if an ESD event occurs in the wrong circumstance. The actual power is extremely small, so small that there is generally no danger to someone who is in the discharge path of ESD. Many parts, such as power diodes, are very robust and can handle the discharge, but if a part has a small or thin geometry as part of their physical structure then the voltage can break down that part of the semiconductor. The pictures are collected from a z-section looking through the lens of the LED directly above the ball bonded die. ESD latent damage may be detectable by its electrical signature but its lifetime behavior is not predictable. Many times these parts are referred to as the “walking wounded”, since they are working but bad. Humid conditions prevent electrostatic charge generation because the thin layer of moisture that accumulates on most surfaces serves to dissipate electric charges.
The most common method is to use a variation of a *Faraday cage, commonly referred to as an ESD bag.
Such an enclosure blocks external static and non-static electric fields by channeling electricity along and around, but not through, the mesh, providing constant voltage on all sides of the enclosure. In permanent Faraday cages this shield is grounded, as in the case of RFI (Radio Frequency Interference) rooms, but with portable containers this isn’t practical.
Bipolar transistors – the earliest of the solid state amplifiers – are not immune, though less susceptible. All ESD protections can be overwhelmed by circumstance, but this can be circumvented by awareness of what ESD is and how to prevent it.
With the plastic locks on a double-layer Faraday tent it is easy to connect the inner Faraday tent to the outer one. As long as this build up continues, the charges will increase until they reach a level that breaks down the strength of an insulator (either material or air). During the era of tubes (AKA the good old days of electronics) ESD was a nonexistent issue for electronics, but with the advent of semiconductors and the increase in miniaturization, it has become much more serious.
It usually takes several thousand volts for a person to even notice ESD in the form of a spark and the familiar zap that accompanies it. Currents during these events become quite high, but are in the nanosecond to microsecond time frame.

The images below of catastrophic ESD damage were provided by Universal Instruments’ Advanced Process Lab who regularly conducts Failure Analysis testing on ESD damaged components.
All four images are of the same sample at different magnifications and illumination techniques. If these components end up in a life support role, such as medical or military use, then the consequences can be grim. The main principle of an EPA is that there are no highly-charged materials in the vicinity of ESD sensitive electronics, all conductive materials are grounded, workers are grounded, and charge build-up on ESD sensitive electronics is prevented. Since the difference in voltage is the measure of electrical potential, no current flows through the space. A bag with a hole, even small ones, or one that is not folded on top to seal the content from outside charges is ineffective.
Ensuring ESD safety during your manufacturing process is a challenge; however, following the ESD guidelines appropriate for your manufacturing model, properly storing and transporting ESD sensitive boards and components, and purchasing ESD-safe nozzles with ESD-safe properties, will help you to take steps towards eliminating ESD damage and issues with your PCB assembly process! The charge or charges will equalize very rapidly, and the equalization is an uncontrolled discharge called an ESD Event. The problem with ESD is that even a small discharge that can go completely unnoticed can ruin semiconductors. Part of the component is left permanently damaged by this, which can cause two types of failures; specifically catastrophic and latent damage. The ESD damage can be detected by looking at the electrical arcing damage surrounding the circumference of the Gold pad on the die surface. Latent damage can result in permanent failure under some stress conditions making the device unreliable.
International standards should be used to define a typical EPA and can be found through the International Electro technical Commission (IEC) or American National Standards Institute (ANSI).
Faraday cages work by routing the electric charge around the contents and grounding them immediately.
A tube variation – used for IC (Integrated Circuits) and other devices with a lot of pins – stores the parts in a molded conductive plastic tube that keeps the parts safe both mechanically and electrically. There are components that might not be considered at risk, such as some specialized resistors and capacitors manufactured using MOS (Metal Oxide Semiconductor) technology, that can be damaged via ESD.
A static charge of thousands of volts is common; however it is not a threat because there is no current of any substantial duration behind it.
These extreme voltages do allow ionization of the air and allow other materials to break down, which is the root of where the damage comes from.

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