ACS120-7ST

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  "type": "component",
  "slug": "acs120-7st",
  "title": "ACS120-7ST",
  "brief": "STMicroelectronics Thyristors (SCR)/Modules, TO-220AB. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "ACS120-7ST",
    "manufacturer": "STMicroelectronics",
    "package": "TO-220AB",
    "pin_count": 4,
    "category": "Transistors/Thyristors",
    "subcategory": "Thyristors (SCR)/Modules",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590327923271241729",
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      "lbr": "acs120-7st.lbr"
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    "distributor_links": {
      "lcsc": "C3614132"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T16:15:31Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "COM",
        "type": "passive",
        "description": "Common drive reference; connects to AC mains; electrically shared with mounting tab; rated VDRM/VRRM ±700 V, IT(RMS) = 2 A at TC = 119 °C, Rth(j-c) = 2.6 °C/W."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "passive",
        "description": "Switched AC output; connects to load; VTM max 1.3 V at IOUT = 2.8 A (tp = 380 µs, TJ = 25 °C); ITSM = 20 A (tp = 20 ms); static dV/dt min 500 V/µs at TJ = 110 °C."
      },
      {
        "number": "3",
        "name": "G",
        "type": "input",
        "description": "Gate input; triggered by negative current flowing out of pin via external resistor from MCU; IGT max 10 mA, VGT max 1 V (VOUT = 12 V DC, RL = 140 Ω, TJ = 25 °C); IGM peak 1 A (tp = 20 µs); PG(AV) max 0.1 W."
      },
      {
        "number": "Tab",
        "name": "COM",
        "type": "passive",
        "description": "Mounting tab; electrically connected to COM (pin 1); primary thermal path to heatsink; Rth(j-c) = 2.6 °C/W for TO-220AB."
      }
    ],
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      "pins": {
        "total": 4,
        "described": 4,
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        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
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          4.455,
          28.525
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        "zmin_mm": -9.75,
        "centre_offset_mm": 0.932,
        "footprint_binding": "identity",
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "TO-220AB",
      "Category": "Transistors/Thyristors",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
        {
          "name": "Repetitive peak off-state voltage",
          "symbol": "VDRM/VRRM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 700,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "On-state RMS current (TO-220AB)",
          "symbol": "IT(RMS)",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "full cycle sine wave 50 to 60 Hz, TO-220AB TC = 119 °C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Non repetitive surge peak on-state current",
          "symbol": "ITSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 20,
          "conditions": "TJ initial = 25 °C, full cycle sine wave, tP = 20 ms",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Non repetitive surge peak on-state current",
          "symbol": "ITSM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 21,
          "conditions": "TJ initial = 25 °C, full cycle sine wave, tP = 16.7 ms",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Fusing capability",
          "symbol": "I2t",
          "kind": "absolute_maximum",
          "unit": "A2s",
          "min": null,
          "typ": null,
          "max": 2.6,
          "conditions": "tP = 10 ms",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Repetitive critical rate of rise of on-state current",
          "symbol": "dI/dt",
          "kind": "absolute_maximum",
          "unit": "A/µs",
          "min": null,
          "typ": null,
          "max": 50,
          "conditions": "IG = 10 mA (tr < 100 ns), Tj = 125 °C, f = 120 Hz",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Non repetitive line peak pulse voltage",
          "symbol": "VPP",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "According to IEC 61000-4-5 (Figure 17)",
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          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -30,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Maximum lead soldering temperature",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "during 10 s",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Average gate power dissipation",
          "symbol": "PG(AV)",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.1,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Peak gate current",
          "symbol": "IGM",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "tP = 20 µs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Peak positive gate voltage (in respect to pin COM)",
          "symbol": "VGM",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient (TO-220AB)",
          "symbol": "Rth(j-a)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 60,
          "conditions": "S = 0.5 cm2 copper surface under tab",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to case (TO-220AB)",
          "symbol": "Rth(j-c)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 2.6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Triggering gate current",
          "symbol": "IGT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "VOUT = 12 V (DC), RL = 140 Ω, QII-QIII, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Triggering gate voltage",
          "symbol": "VGT",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "VOUT = 12 V (DC), RL = 140 Ω, QII-QIII, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Non-triggering gate voltage",
          "symbol": "VGD",
          "kind": "electrical",
          "unit": "V",
          "min": 0.15,
          "typ": null,
          "max": null,
          "conditions": "VOUT = VDRM, RL = 3.3 kΩ, TJ = 125 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Holding current",
          "symbol": "IH",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 45,
          "conditions": "IOUT = 100 mA, gate open, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Latching current",
          "symbol": "IL",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 65,
          "conditions": "IG = 20 mA, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak on-state voltage drop",
          "symbol": "VTM",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 1.3,
          "conditions": "IOUT = 2.8 A, tp = 380 µs, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "On-state threshold voltage",
          "symbol": "VTO",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.85,
          "conditions": "TJ = 125 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "On-state dynamic resistance",
          "symbol": "Rd",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "TJ = 125 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum forward or reverse leakage current",
          "symbol": "IDRM /IRRM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "VOUT = 700 V, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum forward or reverse leakage current",
          "symbol": "IDRM /IRRM",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "VOUT = 700 V, TJ = 125 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Critical rate of rise of off-state voltage",
          "symbol": "dV/dt",
          "kind": "electrical",
          "unit": "V/µs",
          "min": 500,
          "typ": null,
          "max": null,
          "conditions": "VOUT = 460 V, gate open, TJ = 110 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Critical rate of decrease of commutating on-state current",
          "symbol": "(dI/dt)c",
          "kind": "electrical",
          "unit": "A/ms",
          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "(dV/dt)c = 20 V/µs, TJ = 125 °C",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Clamping voltage",
          "symbol": "VCL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1100,
          "max": null,
          "conditions": "ICL = 1 mA, tp = 1 ms, TJ = 25 °C",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
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    "email": "[email protected]"
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