Compounds derived from ammonia. They contain a basic nitrogen atom and can be
organic or inorganic.
A substance added to something in small quantities to improve or preserve it.
A repeating unit in a polymer chain. The term monomer is derived from the Greek
word “mono” meaning one.
An organic compound consisting exclusively of the elements carbon and
hydrogen. The carbon atoms are arranged in straight or branched chain or ring.
When identical simple molecules (monomers) come together and link up in a
chain-like fashion, they form a polymer. The chemical reaction that forms a polymer is called polymerization. There are natural polymers (often referred to as biopolymers), such as cellulose, rubber and DNA, and synthetic polymers, such as polyethylene, nylon and PVC. Most resins are polymers.
Chemicals derived from plant and animal fats. They are analogous to petrochemicals
derived from petroleum.
A pigment is a material that changes the color of reflected or transmitted light as
the result of wavelength-selective absorption. This physical process differs from
An organic compound added to a high polymer both to facilitate processing and
to increase the flexibility and toughness of the final product by internal modification (solvation) of the polymer molecule. Polyvinyl chloride and cellulose esters are the largest consumers of plasticizers.
A substance capable of dissolving another substance (solute) to form a uniformly
dispersed mixture (solution) at the molecular or ionic size level. Solvents can be chosen or blended to dissolve almost any kind of material, and they are an important part of the chemical industry.
A hard, unreactive, colorless compound that occurs as the mineral quartz and as a
principal constituent of sandstone and other rocks.
Any number of polymers containing alternate silicon and oxygen atoms, with
organic groups attached to the silicon atoms. Such compounds are typically resistant to chemical attack and insensitive to temperature changes and are used in polishes and lubricants and can make rubber and plastics.
The particular mixture of liquids that gives the desired flow or evaporation properties.
A file in the Gerber Format that is used as a universal way of telling manufacturers how
to create your board.
Short for surface-active agent, surfactants are used to describe a chemical that will
reduce the surface tension of water when it is added to it. This enables the water to mix with materials it would otherwise not dissolve, such as grease. There are three categories: detergents, wetting agents, and emulsifiers; all use the same basic chemical mechanism and differ in the nature of the surfaces involved.
A path made of copper on a PCB. It is used in the same manner as electrical wires, to
connect the components of a board.
A hole with copper inside to provide electrical connection between a trace on
one layer to a trace on a different layer of the PCB.
Pads are used to solder surface mount devices to the board.
Markings of component names, values and outlines on a PCB for simpler assembly
and debugging. Usually white.kind of material, and they are an important part of the chemical industry.
SOLDER MASK OR SOLDER RESIST
A substance that solder won’t stick to. Used to make sure traces are insulated
electrically and physically. This is usually applied to the whole board except from where there are pads to be soldered.
A layer on top of pads to prevent the copper layer from oxidation.
MULTI LAYER PCB
A PCB with traces and pads on both sides of the board in addition to traces on layers
within the board itself.
Manufacturers often create one huge PCB with many identical board designs on it.
The huge PCB is then cut into individual boards. This is called panelizing.
SINGLE SIDED PCB
A PCB with traces and pads only on one side of the board.
DOUBLE SIDED PCB
A PCB with traces and pads on both sides of the board.
Is the most common type of all Metal Core PCB (MCPCB) also known as IMS (Isolated
Metal Substrate). Aluminum Board are a unique metal-based copper clad laminate excellent thermal conductivity, high mechanical strength and dimension stability.
Some companies offer Printed Circuit Board Assembly (PCBA). This basically
means that they solder the components to your board for you.
The most commonly used material for creating PCBs.
Restriction of Hazardous Substances. A European law intended to protect the environment.
A Semi-Flex circuit is made by thinning a portion of a rigid FR4 PCB down to
0,1~0,2mm, making it bendable up to a certain point
PCB’s with higher density than a normal pcb, line and space smaller than 120µ, via’s
diameter smaller than 150µ and most of the time via’s made by laser technology
Made out of Conductive Strips of metal , usually Copper , encapsulated with an
insulating Dilecetric material made of polyimide or solder mask . Polyimide is an excellent insulation material that allows the circuit to bend , resisit contamination and withstand high temeratures.
In a Rigid Flex PCB , a flex PCB acts as a cable, a link between one and several
PCBs. A flex PCB is only the cable, whereas Rigid-Flex acts as a cable already linked to one or several PCBs.
Radio Frequency and microwave PCBs are a special and innovative type of PCB
designated to operate on signals in the megahertz to gigahertz frequency ranges (medium frequency to extremely high frequency). These frequency ranges are used for communication signals in everything from smartphones to military radars.