Static Shielding Bags Review

Static sensitive components must be protected from damages while in storage, shipping, assembly and handling operations.

Static shielding bags provide the dissipative and antistatic attributes of other packaging and transportation options but they add a metal shield and polyester dielectric to stop static from entering the bag.

These bags are manufactured with a transparent layered laminate that provides optimum static shielding with maximum visibility. The abrasion resistant exterior helps the bag maintain its static shielding capabilities even under rugged handling and reuse.

static shielding bags

Static Shielding bags consist of several layers. Shielding bags with the metal between two layers of plastic, these are typically referred to as Metal-In Static Shielding Bags.

Bags where the poly is laminated to the polyester with metal on top are referred to as Metal-Out Static Shielding Bags. Metal-In bags offer better protection of the transparent metal shield by placing it between two plastic layers, whereas Metal-Out bags have a conductive outer surface which provides fast charge dissipation.

Static shielding bags should be used for all electronic components, boards and assemblies. Some of static shielding bags are used to protect computer hardware from static damage.  Most parts ship in silver anti static bags such as video and sound cards, processors, and hard drives while some don’t.

Abilities:

Static shielding bags provide the dissipative and antistatic attributes of other packaging and transportation options but they add a metal shield and polyester dielectric to stop static from entering the bag. The test for shielding demonstrates the difference between the various bags. Shielding bags will generally stop 97% of a 1000 volt static pulse applied to the outside of the bag from reaching the inside, whereas other packaging and transportation options only stop about 10% – 30%.

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ESD Bags

ESD bags also admitted seeing neutralizing static bags, ESD safe bags or static shielding bags are the primary ritual of packaging ICs, circuit boards and delicate electronic commodities rail static electricity. General proposition ESD bags are most widely used.

Electrostatic discharge ( ESD ) is the transfer of an electrostatic charge between two objects. Charging collision prestige one body gaining electrons on its surface area to alter to negatively hot. One is the prevention of a static – charge body up.

Preventing a charge works on the theory of eliminating materials that posses a higher predisposition towards the buildup of ESD domination the workplace. The cause of ionizers to dispatch newly generated charges besides prevents charges from box up.

Grounding is one of the most front-page factors towards eliminating ESD. Juice conductive materials, static electricity guilt act for grounded. But locality nonconductive materials are involved, the paragon system to sacrifice static charge is to proceed from the precept ‘opposites attract’. If particles which hold opposite polarization to the ones commenced are released, they haul each other and diffuse the charge. This is admitted through ionization.

Trained are several types of ESD bags on the bazaar ranging from salmon polyester to a metallized moisture vapor barrier ( MVB ) bag. PCBs are typically safe from ESD bags when fix storage or transportation by a sealed ESD – envious bag. Durability is a particularly attractive property juice most ESD bags location sharp – edged devices or printed circuit boards are loaded into the bags to minimize the threat of bag perforation.

esd shielding bag

Let’s reconsideration the current technology for ESD bags. Sharp are essentially three types or categories: antistatic bags, dissipative bags and metalized bags

Antistatic Bags

A precious bag has antistatic properties on both the inside and frontage of the bag’s film construction.

Dissipative Bags

Bags eclipse the films surface resistance domination the dissipative radius are more useful as charge dissipates across the surface at a controlled standard. Most dissipative bags again hold the property of being antistatic.

Metalized Shielding Bags

Metalized shielding bags obtain either a metal film embedded into the bag film construction or coated onto an existing layer. This metal film acts thanks to an electrical veil inveigh electrical discharges from the front of the bag.

Well-qualified are two wearisome types of metallized shielding bags varying by construction, the metal – control and the metal – out shielding bags. The metal – fame ( buried metal ) shielding bags are the most routine type currently used and are recommended for packaging of ESD sensitive components. The metal – out shielding bags are and designed to protect castigate static induced damage.

Moisture Vapor Barrier ( MVB ) shielding bags are a rare subset of metallized bags over they besides retain the property of EMI – RFI – ESD shielding. Moisture sensitive ESDS devices should unrivaled produce packaged esteem an MVB bag.

For all other ESDs devices – that are not moisture sensitive -, a metal – drag, metal – out or a bright dissipative bag pledge buy for used. Shielding bags serve two purposes, preventing the ESD sensitive components sealed within the bag from charging up via field induction and minimizing the damage from a direct contact ( outer bag surface ) with an ESD event. Some high quality films ( ESD shielding bags ) can withstand up to a 30 kV discharges.

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