The natural structural
stability in mica renders it the perfect dielectric with outstanding features of low
leakage, great stability under increasing temperature, high insular strength, low rate of
solar impurities and reasonable admittance factor. Because of these outstanding features,
mica is most suited for use in thermionic valve bridges, cathode ray tube assemblies,
condenser plates, domestic elements, stove plates and washers built upto any thickness. In
almost all these applications, mica is die-punched and used as such, or with a coating.
Our range of production offer a
wide variety of fabricated mica, including transistor mounting washers, trimmer parts,
condenser plates as substrates for mica capacitors and specific designs for custom-built
applications. You can choose from our available sizes or provide us with your tailor-made
drawings / designs, based on which we can make supplies.
Transistor Parts
Power transistors and diodes need an insulation to prevent excessive heat reducing their
performance, Precision punched mica washers help the transistor to be insulated from the
chassis and to dissipate the heat away from the transistor and other semi-conductors.
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Crimped / Corrugated Mica
This is made from Muscovite mica of Bihar origin which withstands high temperatures of
above 700C. Corrugated mica is supplied as per customer’s specification. The main use
of this type of mica is in soldering irons.
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Mica for Liquid Level Indicators
Mica being unaffected by high temperature and high pressure, is an ideal optical medium
for checking the measurements in boilers for liquid level and pressure of
steam.
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Mica Washers
These are mica discs of inferior quality with round opening in the centre, which can be
bonded by shellac or epoxy into considerable lengths. Maximum use is in
railways.
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Heating Elements
Due to electrical insulation, it is used in irons, toasters, kettle, rice cooker, hair
drier, etc. In all these applications, the electrical wire is wound around the mica.
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Vaccum Tubes
In the form of bridges or spacers, sheet mica is used in thermionic vacuum tubes, and
these serve to hold the tube elements in position, insulated from each other and
at uniform distances.
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Condensor Plates
Made by die cutting of thin mica films, it is screen printed with silver ink to be used as
an electrode in mica capacitors.
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Window Mica
Owing to thermal insulation and
transparency, it is used as a see-through medium for kerosene stoves, petromax lamps,
furnaces, etc.
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Rolled Mica Tube
This tube is made from mica splitting for use in standing temperature of upto 600° C in a
very small size.
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Wrapper Mica
Made by die-cutting of mica thins, it is corrugated and eventually used in wrapping the
heating element of soldering iron.
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Strainer Core
Sheet mica having 22 to 93 holes are used as strainers in brass, bronze, aluminium sand
castings. Mica strainer, acting as both choked and strainer during pour, helps to
eliminate getting casts, dross, contaminated, reduces polishing belt costs, and produces a
better and brighter casting. Being inorganic, strainer is easy to place over the sprue
hole.
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Cut Mica Discs
Die cut or lathe cut round discs are used in liquid level indicators, breathing apparatus, communication devices, fuses, etc.
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Trimmer Mica
Made of stacked mica dielectric capacitance units, between two spring nonferrous metal
conducting plates ; mounted within a ceramic container, or on a ceramic base. Adjusting
screw provides variable compression on the formed metal plate separation.
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Backing Mica
These are small cut pieces of mica to be used on both sides of silver mica, to give
mechanical strength to mica stacks for building mica capacitors.
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