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Kester 53-4003-0527 - TC-527 Hi-Temp Flexible Solder Mask, 1 Gallon
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Otherwise, on order with the manufacturer
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Kester 53-4003-0527 is TC-527, a Pink, Hi-Temp Flexible Solder Mask, 1 gallon.
Kester TC-527 is a high-temperature, flexible solder masking compound specially formulated of natural latex rubber. The latex has been chemically enhanced so it is heat stable and tacky enough to be applied to those areas of circuit boards, which require masking during a wave soldering process. Kester TC-527 is versatile and effectively masks and protects the board from the time it is manufactured, through all assembly and flow operations. Kester TC-527 can remain on the protected areas of the board until ready for test, and then, with only a mild pulling action by hand or tweezer-like tools, can be easily peeled away without leaving a residue.
Will not tarnish gold or phosphor bronze
Protects delicate components
Viscosity (typical): 11,500 cps
Brookfield viscometer @ 20rpm and 25ºC
Parts to be protected must be free from oil, grease and silicones to ensure proper adhesion. Kester TC-527 can be thinned with water and uncured mask left on equipment can be removed with water. A 15-mil thick coat of Kester TC-527 will cure in approximately 45 minutes at room temperature or 15 to 20 minutes at 66ºC (150ºF). Warming the surfaces prior to application will expedite cure. High relative humidity or greater coating thickness will necessitate longer cure times. Kester TC-527 may be exposed to oven temperatures of 82ºC (180ºF) and lower for up to 16 hours without degradation. At temperatuers of 82-120ºC (180-250ºF) exposure time should be limited to two hours, at 120-149ºC (250-300ºF), 30 minutes. Exceeding these exposure times will cause Kester TC-527 to soften and lose elasticity. Exposure of TC-527 to oven temperatures above 149ºC (300ºF) is not recommended.
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