AO3401A

@@ -0,0 +1,47 @@+# AO3401A++**Alpha & Omega Semiconductor** · P-channel MOSFET · SOT-23++P-channel enhancement-mode MOSFET in a SOT-23 package, using trench technology for low on-resistance (<50 mohm at VGS = -10 V) and low gate charge. Rated -30 V drain-source and up to -4 A, it turns on with gate drive as low as -2.5 V, which suits high-side load switches and reverse-polarity protection from a 3.3-5 V rail. Source ties to the positive rail, drain to the load; the body diode runs source-to-drain.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | G | input | Gate. Control terminal for the P-channel MOSFET. Gate threshold voltage VGS(th) = -0.5V to -1.3V (typ -0.9V). Absolute maximum VGS = ±12V. Input capacitance Ciss = 645pF typ. |+| 2 | S | passive | Source. Current-return terminal for the P-channel MOSFET. Typically tied to the positive supply rail in high-side load-switch configurations. Body diode anode is internally connected here (VSD typ -0.7V at IS=-1A). |+| 3 | D | passive | Drain. Switched current terminal for the P-channel MOSFET. VDS absolute maximum -30V; continuous ID up to -4A at TA=25°C. Body diode cathode is internally connected here. |++## Key specifications++| Parameter | Value |+|---|---|+| Type | P-channel enhancement-mode MOSFET |+| Drain-source voltage (VDS) | -30 V |+| Continuous drain current (ID) | -4 A @ 25 °C |+| On-resistance (RDS(on)) | <50 mΩ @ VGS = -10 V |+| Gate threshold (VGS(th)) | -0.5 to -1.3 V (typ -0.9 V) |+| Gate-source voltage (VGS) | ±12 V |+| Input capacitance (Ciss) | 645 pF typ |+| Package | SOT-23 |+| Body (L×W×H) | 2.9 × 1.3 × 1.1 mm |++## Ordering variants++- `AO3401A (SOT-23, tape & reel)`++## CAD (KiCad official)++- Symbol: `Transistor_FET:AO3401A`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D)++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Alpha & Omega Semiconductor datasheet](http://www.aosmd.com/res/data_sheets/AO3401A.pdf) (5 pp, sha256 `0d8e3261ae280e00`, retrieved 2026-08-17, tier: manufacturer)+- **Extractor:** `ds2sf` (Claude) — every pin and dimension is cited to a datasheet page; refuses to fabricate.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/ao3401a-datasheet.pdf)

@@ -0,0 +1,35 @@+{+  "slug": "ao3401a",+  "version": "0.1.0",+  "type": "component",+  "description": "AOS P-channel MOSFET, SOT-23. -30 V, -4 A, RDS(on) <50 mOhm @ VGS=-10 V. Datasheet-verified.",+  "tags": [+    "component",+    "transistor",+    "mosfet",+    "p-channel",+    "sot-23",+    "alpha-omega"+  ],+  "dependencies": {},+  "hero": {+    "type": "image",+    "path": "docs/hero.png"+  },+  "files": [+    "page.json",+    "README.md",+    "ao3401a.kicad_sym",+    "ao3401a.kicad_mod",+    "ao3401a.glb",+    "docs/hero.png",+    "docs/ao3401a-datasheet.pdf",+    "viewers/symbol.html",+    "viewers/footprint.html"+  ],+  "visibility": "public",+  "author": {+    "name": "Ray",+    "email": "[email protected]"+  }+}\ No newline at end of file