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    Power Electronics Devices Of Resistance Welder

    zw13500_2
    Runau welder diode ZW 5
    Welder assembly unit 3 RUNAU
    Welder assembly unit 1 RUNAU

    Resistance welding is to press the work piece to be welded between the two electrodes by high current penetrated. It’s a method that the resistance heat generated by the current flowing through the work piece contact surface and the adjacent area is used to heat it to molten or plastic state to bond the metal. The main resistance welding is in the form of spot welding, seam welding, projection welding and butt welding.

    The development of modern industries such as automotives, vessels, planes, and high-speed railways, require the medium and high frequency ultra-high current resistance welding machines and the ultra-high current diode work as the vital component is extremely required.

    With constant innovation and strong research ability, Runau Electronics had developed the ultra-high current diode featured in optimized high current density, very low on-state voltage and very low thermal resistance which can parallel connect directly, thin silicon wafer, low threshold voltage, small slope resistance, high junction temperature, gold or platinum diffusion combined with electron irradiation to control minority life, apply low anode concentration and dual-bases zone technology to achieve the purpose of high frequency soft and fast recovery. The diode packaged in housed and housing-less. The ultra-high current welding diode can be adopted in resistance welder with frequency from 1KHz to 5 KHz.

    Ultra-High Current Welding Diode List

    TYPE

    IF(AV)

    TC

    VRRM

    IFSM @TVJIM&10ms

    I2t

    VFM                        @IFM&TJ=25℃

    Tjm

    Rjc

    F

    m

    CODE

    A

    V

    A

    A2s

    V

    A

    ℃/W

    KN

    Kg

    Voltage up to 400V

    7100

    85

    200~400

    55000

    1.5×107

    1.05

    5000

    170

    0.010

    24

    0.140

    W1

    10500

    85

    200~400

    70000

    2.4×107

    1.01

    5000

    180

    0.005

    32

    0.460

    W2

    12000

    85

    200~400

    85000

    3.6×107

    0.99

    5000

    170

    0.006

    35

    0.205

    W3

    13500

    85

    200~400

    85000

    3.6×107

    0.97

    5000

    180

    0.004

    35

    0.140

    W4

    16000

    85

    200~400

    120000

    7.2×107

    0.92

    5000

    170

    0.004

    37

    0.570

    W5

    18000

    85

    200~400

    135000

    9.1×107

    0.90

    5000

    170

    0.004

    40

    0.580

    W5


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