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    台湾产千住宅男在线视频网站
    产品型号：M705-S101HF-S4
    产品品牌：千住金属
    13543272580
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    台湾产千住宅男在线视频网站
    台湾产千住宅男在线视频网站 ECO SOLDER PASTE M705-S101HF-S4
    1.Scope
    This specification covers the solder paste,
    ECO SOLDER PASTE M705-S101-S4, using lead-free solder alloy, used for
    wiring connection and so on, of electrical and electronic parts.
    2.Standard
    ２.1Chemical composition of solder alloy（Test method：STM-9）
    Composition and impurities are prescribed as following tables
    Composition ( mass% )
    Ａｇ
    Ｃｕ
    Ｓｎ
    3.0 ± 0.1
    0.50 ± 0.05
    Balance
    2.2Performance and standard
    Items
    Performance                 Standard
    Test Method
    Appearance
    It shall not have separated flux,and shall be in a smooth pastestate.
    STM-1
     
    Flux content (mass%)
    11.5 ± 1.0
    STM-5
    Viscosity of solderpaste (Pa s)
    190 ± 30
    STM-7-8
    Grain size of powder
    （um）
    36 ∼25
    STM-12-4
    Copper plate corrosion test
    Shall be passed
    STM-28-1
    Insulation resistance
    Ordinary state 1 × 10 or more After humidifying 1 × 10 or more
    STM-30-8
    Solution resistance
    100 or more
    STM-32
    Reflow property
    No unmelted solder nor black product shall be permissibl
    STM-34
     

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