Electronic devices generate electromagnetic waves which can adversely affect other electronic devices.
These types of effects are referred to as RFI (Radio Frequency Interference) and EMI (Electromagnetic Interference).
RFI is known to cause the generation of signals within a device internally, and these emissions can interfere with the operation of equipment.
The world has become increasingly electronic with a huge number of signals and waves floating through the air at any given time.
RFI can be responsible for causing malfunctions in the electronic gadgets to a significant extent.
We can make use of shielding tapes so as to prevent these types of issues, and, in this article, we are going to discuss how to shield RFI using tapes.
The RFI shielding tapes are known to offer a solution which will help to contain the signals emitted from the electronic components.
Apart from preventing these signals, they are also going to block out any random signal present in the environment so as to safeguard any sensitive equipment.
The conductive adhesive of these tapes provides static charge drainage which helps to get rid of any potentially hazardous static buildup. A low contact resistance between the backing and the substrate is provided by the particles in that conducive adhesive.
What kind of tapes can be used to shield RFI?
The most common tapes used for shielding RFI happen to be the aluminum as well as copper foil shielding tapes.
It is not difficult to install them, and their shape will allow you to fit them easily into your products thus making them appropriate for any low profile application.
These tapes are known to offer a long-lasting as well as reliable shielding solution which will help to sustain the quality as well as the performance of the products.
You will come across a wide array of shielding tapes these days and these are obtainable in different types of thicknesses as well as backing materials so as to satisfy galvanic compatibility specifications.
Among them, mention may be made of aluminum, fabric shielding tapes, tin-plated copper foil tapes as well as copper shielding tapes with conductive or non-conductive adhesives.
Characteristics of RFI shielding tapes:
- Flame retardant
- Better resistance to corrosion and abrasion
- Embossed or flat
- Conductive adhesive for shielding and grounding
RFI shielding tape applications consist of:
- Shielding around any individual
- Shielding of apertures as well as seams in shielded rooms
- Shielding of any keyboard device
- I/O shielding panels
- Shielding panels and doors of electronic enclosures and cabinets
- Used on the outside of various components like coils and relays so as to prevent any broadband RFI emission
- Shielding of electro-medical gadgets
- Shields or a ground planes for electric connectors and cables
Different types of RFI tapes:
1. Copper Shielding Tapes
These copper RFI tapes happen to be perhaps the most typical and widely used option for your shielding requirements given that it is available in an extensive set of construction types.
These types of shielding tapes are manufactured with smooth foil backings that help to establish a 100% safe electrical contact by means of a custom adhesive, embossed foil backings which make direct contact along with tin so as to get better-plated backings.
These copper foil tapes are found in almost every place where RFI tape is employed including covering transformers, safeguarding a room by means of copper shielding tape or grounding planes for the connectors.
2. RFI Aluminum Foil Tapes
These types of tapes are usually employed for safeguarding or shielding a connector and also providing different types of low-resistance paths like the ones we find in smooth foil backings where conductive and acrylic adhesive is required.
Aluminum foil tapes come with embossed foil backings which provide extremely effective shielding through significant contact resistance.
These RFI shielding tapes are a great alternative to the above-mentioned copper tapes given that they are appropriate for die cutting, operations consisting of oxidation and also while making use of oils and solvents.
3. Powder Paint Mask Shielding Tape
These types of RFI shielding tapes are usually made with a specific powder paint coating which can be tailor-made to satisfy your specific requirements. We can use these powder paint mask shielding tapes for supporting special uses such as chemical etching and so on.
At present, RFI shielding is vital for many industries across the globe. For instance. RFI shielding is required for telecommunications since radio transmissions might hinder the reception of a signal by a receiver in case the signals are of almost identical frequency.
RFI shielding has become more achievable by making use of tapes.