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2SK3666G-3-AE3-R
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UTC Unisonic Tech JFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+39@@ -0,0 +1,39 @@+# 2SK3666G-3-AE3-R++**UTC Unisonic Tech** · JFETs · SOT-23++2SK3666G-3-AE3-R from UTC Unisonic Tech, in a SOT-23. 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 | S | passive | Source terminal with maximum drain-source voltage of 30V and maximum continuous drain current of 10mA. |+| 2 | D | passive | Drain terminal with maximum drain-source voltage of 30V and drain-source leakage current of 0.6-6.0mA at VDS=10V, VGS=0V. |+| 3 | G | input | Gate control input terminal with maximum gate current of 10mA and gate-source leakage current of −1.0nA at VGS=−20V, VDS=0V. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | UTC Unisonic Tech |+| Package | SOT-23 |+| Category | Transistors/Thyristors |+| Pins | 3 |++## CAD (KiCad official)++- Symbol: `2SK3666G-3-AE3-R`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)+- 3D model files: `2sk3666g-3-ae3-r-etched.step` / `2sk3666g-3-ae3-r-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `2sk3666g-3-ae3-r.step` / `2sk3666g-3-ae3-r.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [UTC Unisonic Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590234938785370112) (3 pp, sha256 `28aa6e1134e41644`, retrieved 2026-09-18, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/2sk3666g-3-ae3-r-datasheet.pdf)
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