TAMURA SQ-20-27Lead Paste
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    SQ-20-27 Features:

    · An excellent printability can be obtained for a fine pattern of 0.3 mm pitch

    · Stable printability is obtained with little change in viscosity during continuous printing

    · There is hardly the occurrence of the bridge, because there is little slump in pre-heating

    · It has a superior effect on Tombstone phenomenon


    SQ-20-27 Parameter:

    ItemsSQ-20-27Test methods 
    Alloy compositionSn62.8/Pb36.8/Ag0.4JIS Z 3282(1999)
    Melting point179~183℃According to DSC measurement
    Particle size of solder22-38μmAccording to laser diffraction method 
    Shape of solder powderSphericalJIS Z 3284(1994)
    Flux content10%JIS Z 3284(1994)
    Chlorine content 0.2%JIS Z 3284(1994)
    Viscosity200Pa・s

    JIS Z 3284(1994) 

    Viscometer, type PCU, manufactured by Malcom at 25℃


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