BTC900N

@@ -0,0 +1,43 @@+# BTC900N++**BORN** · Gas Discharge Tube Arresters (GDT) · 1812++BTC900N from BORN, in a 1812. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | A1 | passive | Gas discharge tube electrode 1. Symmetric bidirectional overvoltage-protection terminal; connects between the protected line (e.g. Tip/Ring) and ground or the opposite electrode. Fires at DC spark-over ~90 V (±30%) and clamps at ~15 V arc voltage while diverting surge current (up to 2.0 kA, 8/20 μs). |+| 2 | A2 | passive | Gas discharge tube electrode 2. Symmetric counterpart to electrode 1; the two electrodes are electrically equivalent and the tube is non-polarized. Under normal operation the electrodes are open (>=1 GΩ insulation @50 V DC); above the spark-over voltage the tube ionizes and shunts surge current between the two terminals. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | BORN |+| Package | 1812 |+| Category | Circuit Protection |+| Pins | 2 |++## Ordering variants++Same part, different packaging or reel option.++- `BTC900N`++## CAD (KiCad official)++- Symbol: `BTC900N`+- Footprint: `Resistor_SMD:R_1812_4532Metric`+- 3D model: 1812 (KiCad packages3D, STEP)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [BORN datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588905305464193024) (3 pp, sha256 `703f08479fe7208f`, retrieved 2026-08-17, tier: lcsc)+- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/btc900n-datasheet.pdf)

@@ -0,0 +1,34 @@+{+  "slug": "btc900n",+  "version": "0.1.0",+  "type": "component",+  "description": "BORN Gas Discharge Tube Arresters (GDT), 1812. Datasheet-verified pinout, KiCad symbol/footprint/3D.",+  "tags": [+    "component",+    "circuit protection",+    "btc900n"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "btc900n.kicad_sym",+    "btc900n.kicad_mod",+    "btc900n.glb",+    "btc900n.step",+    "btc900n.lbr",+    "docs/hero.png",+    "docs/btc900n-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file