Fluxes, pastes, inks, varnishes. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Fluxes, pastes, inks, varnishes. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Ham Radio Technologies

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FLUXES:

FTBF - for soldering aluminum and most of its alloys, stainless steels, copper and its alloys, nickel, cadmium, lead, platinum group metals. Activity temperature 200...320С. Removed with water.

38Н - for soldering nichrome, beryllium bronze, constantan, carbon and corrosion-resistant steels, nickel, copper and its alloys. Activity temperature 300...390С. Removed with water.

FCA - for soldering copper, nickel and their alloys, zinc and carbon steels, has increased activity and ensures high quality of soldered joints when working with low-alloy steel grades. Activity temperature 160...350 C. Removed with water.

IEC - for soldering electronic components of printed circuit boards, allows tinning with low-temperature solders without preliminary stripping. Activity temperature 200...330 C. Removed with water. The flux is non-toxic, non-corrosive, and non-flammable.

FDGL - rosin-free glycerin flux. It is intended for the soldering of steel, nickel, copper and its alloys without preliminary cleaning. Activity temperature 150...300С. Removed with water.

LTI-120 (alcohol rosin) - for soldering copper and its alloys, carbon steel, nickel, effective when soldering electronic components. Activity temperature 200...300С. It is removed with alcohol or an alcohol-gasoline mixture.

FCT - for soldering electronic components of printed circuit boards with low-temperature solders without pre-cleaning. Activity temperature 160...300 C. Removed with water. Solder POS-61. The volume of 20 cm3 costs 1 hryvnia. 90 kop. Delivery of 0,5 l is possible. The flux is non-toxic, non-corrosive, and non-flammable. A distinctive feature of this flux is a very low cost.

FCS - rosin-free neutral flux, designed for soldering parts of radio equipment, steel, nickel, copper and their alloys. Activity temperature 180...350С. The soldering is made by POS-61 solder. Flux residues are washed off with water or alcohol.

FGA - designed for soldering steel, nickel, copper and its alloys without pre-cleaning. The soldering is made by POS-61 solder. Activity temperature 150...300 С Flux residues are washed off with water.

TAGS - for soldering electronic components of printed circuit boards, allows tinning of boards with low-temperature solders without preliminary cleaning of the tinning surface. The activity temperature is 200...330 C. Soldering is performed with POS-61 solder. The flux is non-toxic, non-corrosive, and non-flammable. If necessary, the flux residues are washed off with water.

In addition, sellers can supply all the listed fluxes filled in markers with a writing part diameter of 6,0 mm and 2,0 mm. The main difference from imported ones is that due to a more competent selection of the consistency on the writing surface, there are no hardening drops that need to be cleaned off.

PASTES:

KTP-19 - heat-conducting non-drying paste, designed to improve thermal contact between heated parts and the surface of the cooling radiator. It looks like a viscous, pasty mass of light gray color. Thermal conductivity 0,8...1,1 W/m deg. Specific volume electrical resistance is not less than 10 Ohm/cm. The dielectric loss tangent is not more than 0,02 at a frequency of 1 MHz. Dielectric constant 4,5 at the same frequency. Retention of plasticity for at least 10 years.

Soldering - designed for group soldering of radioelements by surface mounting in a hot air environment. Applying the paste to the soldering zones is possible using a stencil method. Can also be used with a soldering iron. No pre-cleaning required. Residues are washed off with alcohol or water.

INK:

CS-2 (1)

For drawing a printed circuit board pattern on a metal surface with a pen, ink liner, felt-tip pen or capillary pen for subsequent etching with an aqueous solution of ferric chloride. The working temperature of the solution is 80 C. Washing - any alcohol-containing solution.

LUCKY:

Varnish TLS

For applying (restoring) contact conductive surfaces on a rubber base. Hardening time at 18CC no more than 20 minutes.

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