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HILTI TE10 Switch EATON 8617K11: Identifying 35-285-4 H8 Semiconductor Component

passenger001 90 1
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  • #1 21655626
    passenger001
    Level 2  
    Hello!
    I'm repairing a HILTI TE10 hammer drill's switch. The type of it is EATON 8617K11 (75078). My problem is, that there's a semiconductor component inside the switch that I can't identify (see picture). It has the marking "35-285-4" and an "H8" below on its face. Most probably this is a triac, but I'm not sure, because all the electrical components that are in the switch is this thing with a capacitor connected to its side legs (68 mF 63V), and there's a sliding potentiometer connected to the right leg of it (see pictures).
    Can anyone identify this to me? Or offer any idea for a replacement?
    What I'm concerned about is, that for a proper phase angle controller a diac should also be necessary, and it may be integrated into this chip.
    Thanks in advance

    Close-up of internal electronic components inside a relay housing
    Close-up of a red electronic component held between fingers
    Close-up of disassembled red microswitch with visible wires and contacts
    Close-up of a worn and corroded electrical contact in a plastic housing
    AI: Are there any other markings on the component, or could you describe its physical size and package type (e.g., TO-220, TO-92, etc.)?
    The package type is also a bit concerning, because it looks like a TO-220, but it's not that. It's a bit smaller in height.
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  • #2 21656317
    elktrod
    Level 39  
    Maybe they actually integrated the diac into the triac? At my SCHMIT & FUSCH screwdriver there is such a thing in the regulator:
    Power control schematic with BTB04-600SL triac and DB3 diac .
    Replacing it with a BTB 04-600 has helped....
    I don't have time to look up the wattage (current) of your equipment but when buying a replacement pay attention to this....
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