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Dumet Plug for Diode

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Dumet wire is a bimetallic alloy with a nickel–iron core and an oxygen-free copper sheath, designed for glass-to-metal sealing in vacuum and lighting applications. Its thermal expansion matches lamp glass, ensuring both conductivity and airtight sealing. Commonly used as the middle section of lamp lead-in wires, it connects inner and outer leads to deliver power into fluorescent, incandescent, and other types of lamps.

    feature application available size Chemical Properties Physical Properties

    Feature

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    Dumet wire is a bimetallic wire with a nickel–iron core and copper coating, providing a hermetic seal, good electrical conductivity, and thermal expansion matched to glass.

      Application

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      It is used as lead-in wires for fluorescent, incandescent, halogen, HID, and specialty lamps, as well as in diodes, capacitor leads, and other glass-to-metal sealed electronic components.

        Available Size

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        Parameter

        Value

        Diameter

        1.0mm

        OEM is acceptable

        Chemical Properties

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        Elements

        C

        Si

        P

        S

        Mn

        Ni

        Fe

        Weight (%)

        ＜0.10

        ＜0.30

        ＜0.02

        ＜0.02

        0.75~1.25

        41~43

        The balance

        *For reference only

        Physical Properties

        +

        Property

        Value

        Copper Content

        21~30%

        Tensile Strength

        441~637Mpa

        Elongation

        ≥20%

        *For reference only