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Protective coating / lacquers

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Varnish for PVB boards 60 - 50ml

Fast drying PVB coating with insulating properties. Protects against stray currents or short circuits. Packaging capacity is 50 ml.
Index: CHE-05710
Index: CHE-05710
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Regular price PLN7.76 Price PLN7.76

PCB lacquer PVB 16 - spray 400ml

Fast drying PVB coating with insulating properties. Protects against stray currents or short circuits. Packaging capacity is 400 ml.
Index: CHE-05709
Index: CHE-05709
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Regular price PLN24.31 Price PLN24.31

Graphite varnish for repairing PCB paths

Product designed for the repair of graphite-coated circuit boards. Also used for repairing broken paths and replenishing graphite layer losses in printed circuit boards. The...
Index: CHE-01816
Index: CHE-01816
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Regular price PLN5.61 Price PLN5.61

PVB Varnish 16 - spray 100ml

Fast drying PVB coating with insulating properties. Protects against stray currents or short circuits. Packaging capacity is 100 ml.
Index: CHE-08877
Index: CHE-08877
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Regular price PLN12.15 Price PLN12.15

Flux Varnish LT-4 spray 100ml

Preparation protecting printed circuit boards against corrosion and oxidation. It facilitates soldering and prevents cold soldering. 100 ml capacity.
Index: CHE-08876
Index: CHE-08876
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Regular price PLN12.15 Price PLN12.15

Epoxy 049 - two components

Two-component resin for pouring and encapsulating entire components in electronics, tele- and radiotechnics. It has very good electro-insulating properties and good...
Index: CHE-09428
Index: CHE-09428
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Regular price PLN16.18 Price PLN16.18

Protective varnish or epoxy grout?

This question requires a more detailed answer. In general, we can say that protective varnish works well on larger surfaces of the board, also on those that contain even a large number of elements - mainly SMD - or solders (in case of the bottom side of THT boards and boards made in mixed technology). Epoxy resin, on the other hand, is perfect for coating small PCBs which will operate in extremely difficult conditions, although it will also seal places difficult to varnish, e.g. near connectors or high electrolytic capacitors, MKP or MKT.

Protection of wafers against corrosion

PVB 16 (spray) or PVB 60 (brush-on liquid) provides basic protection against harmful effects of atmospheric gases and moisture. Spray is better for covering large areas with an even, aesthetic layer, while a small brush will give much better control in places inaccessible to the spray. If you are making your own PCB and don't plan to use soldermask, LT-4 flux may be sufficient, which besides basic protection of bare copper tracks also provides excellent solderability of pads - especially if you don't use tin plating.

Repairing contact pads in membrane keyboards

You have surely come across "worked out" or even damaged contact pads in car remote controls or remote controllers of RTV equipment. Such fields are usually in the form of interlocking combs, which are connected by conductive rubber placed under proper button and are the simplest and cheapest form of microswitch. This solution is used practically in all TV remote controls, home theater sets or air conditioners. To repair tracks in such places you can use a special protective paint based on graphite from AG TermoPasty. This product will also be useful in repairing low-current signal paths in printed circuit boards (keep in mind the relatively high resistance of such connections).