JST SM04B-GHS-TB(LF)(SN) GH 4-circuit side entry SMT header

{
  "slug": "sm04b-ghs-tb-lf-sn",
  "type": "hardware",
  "kind": "component",
  "org": "adom",
  "version": "0.1.0",
  "title": "JST SM04B-GHS-TB(LF)(SN) GH 4-circuit side entry SMT header",
  "brief": "JST GH 1.25 mm pitch, 4 circuits, side entry (right angle) SMT shrouded header with two solder tabs; mates with GHR-04V-S and SSHL-002T-P0.2.",
  "description": "JST SM04B-GHS-TB(LF)(SN): GH series 1.25 mm pitch, 4 circuit, side entry (right angle) surface mount shrouded header with two solder tabs, lead free tin plated. Mates with the GHR-04V-S housing fitted with SSHL-002T-P0.2 crimp contacts. KiCad symbol, footprint checked pad by pad against JST's recommended PC board layout, 3D model checked against JST's drawing, four detail levels, Fusion and Altium libraries.",
  "license": "CC-BY-4.0",
  "tags": [
    "JST",
    "GH",
    "connector",
    "1.25mm",
    "wire-to-board",
    "side-entry",
    "SMT",
    "header"
  ],
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "source": {
    "tool": "jst",
    "url": "https://www.jst-mfg.com/product/pdf/eng/eGH.pdf"
  },
  "component": {
    "mpn": "SM04B-GHS-TB(LF)(SN)",
    "manufacturer": "JST",
    "series": "GH",
    "package": "GH side entry SMT shrouded header, 4 circuits, 1.25 mm pitch, 2 solder tabs",
    "pin_count": 4,
    "category": "Connectors",
    "subcategory": "Wire-to-board header, side entry (right angle), SMT",
    "datasheet": "https://www.jst-mfg.com/product/pdf/eng/eGH.pdf",
    "wiki_url": "https://wiki.adom.inc/adom/sm04b-ghs-tb-lf-sn",
    "lifecycle": "Active (DigiKey status 2026-10-21)",
    "body_size": {
      "x_mm": 8.25,
      "y_mm": 4.05,
      "z_mm": 4.25,
      "pitch_mm": 1.25
    },
    "parts": {
      "symbol": "sm04b-ghs-tb-lf-sn.kicad_sym",
      "footprint": "sm04b-ghs-tb-lf-sn.kicad_mod",
      "model_3d": "sm04b-ghs-tb-lf-sn-hero.glb",
      "model_3d_plain": "sm04b-ghs-tb-lf-sn.glb",
      "model_3d_step": "sm04b-ghs-tb-lf-sn.step",
      "model_3d_step_plain": "sm04b-ghs-tb-lf-sn.step",
      "step": "sm04b-ghs-tb-lf-sn.step",
      "lbr": "sm04b-ghs-tb-lf-sn.lbr",
      "datasheet": "docs/sm04b-ghs-tb-lf-sn-datasheet.pdf"
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "viewer_3d": {
      "ground": false,
      "animate": false,
      "shadows": false,
      "tooltips": "authored"
    },
    "models": "models.json",
    "lod": "lod/manifest.json",
    "verification": "verification.json",
    "mating_parts": [
      {
        "mpn": "GHR-04V-S",
        "role": "Mating cable housing, 4 circuits",
        "wiki": "https://wiki.adom.inc/adom/ghr-04v-s",
        "source": "JST eGH.pdf p.2, Housing"
      },
      {
        "mpn": "SSHL-002T-P0.2",
        "role": "Crimp contact for the housing, AWG #30 to #26, insulation O.D. 0.76 to 1.0 mm",
        "wiki": "https://wiki.adom.inc/adom/sshl-002t-p0-2",
        "source": "JST eGH.pdf p.1, Contact"
      }
    ],
    "related": [
      {
        "mpn": "BM04B-GHS-TBT",
        "role": "Top entry version of this header (same series and circuit count)",
        "wiki": "https://wiki.adom.inc/adom/bm04b-ghs-tbt"
      }
    ],
    "pins": [
      {
        "number": "1",
        "name": "1",
        "type": "passive",
        "description": "Circuit No.1: the left contact seen from the mating face with the board below (JST eGH.pdf p.2, side entry view). Pad 1, -X end of the footprint."
      },
      {
        "number": "2",
        "name": "2",
        "type": "passive",
        "description": "Circuit No.2 (1.25 mm from circuit 1)."
      },
      {
        "number": "3",
        "name": "3",
        "type": "passive",
        "description": "Circuit No.3."
      },
      {
        "number": "4",
        "name": "4",
        "type": "passive",
        "description": "Circuit No.4: the right contact seen from the mating face."
      },
      {
        "number": "MP",
        "name": "MP",
        "type": "no_connect",
        "description": "Two solder tabs (brass, tin plated) for mechanical retention, one at each end; both pads are numbered MP. Not a contact. Unconnected by default; tie to a ground or other copper only if the design calls for it."
      }
    ],
    "specs": {
      "source": "JST GH catalog eGH.pdf p.1 (Specifications) and p.2 (Material and Finish)",
      "current_rating": "1.0 A AC, DC (AWG #26)",
      "voltage_rating": "50 V AC, DC",
      "temperature_range": "-25 to +85 C, including temperature rise from current",
      "contact_resistance": "30 mOhm max initial, 50 mOhm max after environmental tests",
      "insulation_resistance": "100 MOhm min",
      "withstanding_voltage": "500 V AC for 1 minute",
      "applicable_wire": "AWG #30 to #26, insulation O.D. 0.76 to 1.0 mm",
      "contact_material": "Phosphor bronze, copper undercoated, tin plated (reflow treatment)",
      "housing_material": "PA9T, UL94V-0, natural (ivory)",
      "solder_tab_material": "Brass, copper undercoated, tin plated",
      "standards": "UL Recognized E60389",
      "packaging": "Embossed tape, 2,500 per reel",
      "lf_sn_suffix": "(LF)(SN) is the lead free, tin plated product label (p.2 RoHS compliance)"
    },
    "distributor_links": {
      "mouser": {
        "part": "306-SM04BGHSTBLFSN",
        "url": "https://www.mouser.com/en/ProductDetail/JST-Commercial/SM04B-GHS-TBLFSN?qs=QpmGXVUTftGayLYZQBIuZw%3D%3D",
        "stock": 762,
        "checked": "2026-10-21"
      },
      "digikey": {
        "part": "455-1566-2-ND",
        "url": "https://www.digikey.com/en/products/detail/jst-sales-america-inc/SM04B-GHS-TB/807788",
        "stock": 0,
        "checked": "2026-10-21",
        "note": "DigiKey lists this part as SM04B-GHS-TB (JST Sales America); its product image is labelled SM04B-GHS-TB(LF)(SN). 455-1566-2-ND is the tape and reel number."
      },
      "lcsc": {
        "part": "C189895",
        "url": "https://www.lcsc.com/product-detail/C189895.html",
        "stock": 5852,
        "checked": "2026-10-21"
      }
    }
  },
  "dependencies": {},
  "visibility": {
    "public": true
  },
  "discovery_triggers": [
    "SM04B-GHS-TB(LF)(SN)",
    "SM04B-GHS-TB",
    "JST GH 4 pin side entry header",
    "JST GH 1.25mm 4 circuit right angle SMT header"
  ],
  "updated_at": "2026-10-21T16:48:44.241Z"
}