BSS138BKT116

@@ -0,0 +1,67 @@+# BSS138BKT116++**ROHM Semicon** · MOSFETs · SOT-23++BSS138BKT116 from ROHM Semicon, in a SOT-23. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | Source | passive | Source terminal of the N-channel MOSFET, shared with the body diode anode and the gate ESD protection diode. |+| 2 | Gate | input | Gate terminal with ESD protection diode (up to 2kV HBM), gate-source voltage limited to ±20V, 2.5V drive, threshold 0.8 to 2.0V. |+| 3 | Drain | passive | Drain terminal of the N-channel MOSFET, rated for 60V drain-source voltage and ±400mA continuous drain current. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | ROHM Semicon |+| Package | SOT-23 |+| Category | Transistors/Thyristors |+| Pins | 3 |++## Electrical characteristics++Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).++| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |+|---|---|---|---|---|---|---|---|+| Drain - Source voltage | VDSS |  |  | 60 | V |  | 1 |+| Continuous drain current | ID | -400 |  | 400 | mA |  | 1 |+| Pulsed drain current | IDP | -1.4 |  | 1.4 | A | Pw ≤ 10μs, Duty cycle ≤ 1% | 1 |+| Gate - Source voltage | VGSS | -20 |  | 20 | V |  | 1 |+| Power dissipation | PD |  |  | 350 | mW | Mounted on a ceramic board (30mm×30mm×0.8mm) | 1 |+| Power dissipation | PD |  |  | 200 | mW | Mounted on a FR4 board (20mm×12mm×0.8mm，Cu pad=0.8m㎡) | 1 |+| Junction temperature | Tj |  |  | 150 | ℃ |  | 1 |+| Operating junction and storage temperature range | Tstg | -55 |  | 150 | ℃ |  | 1 |+| Thermal resistance, junction - ambient | RthJA |  |  | 357 | ℃/W | Mounted on a ceramic board (30mm×30mm×0.8mm) | 2 |+| Thermal resistance, junction - ambient | RthJA |  |  | 625 | ℃/W | Mounted on a FR4 board (20mm×12mm×0.8mm，Cu pad=0.8m㎡) | 2 |+| Drain - Source breakdown voltage | V(BR)DSS | 60 |  |  | V | VGS = 0V, ID = 1mA | 2 |+| Zero gate voltage drain current | IDSS |  |  | 1 | μA | VDS = 60V, VGS = 0V | 2 |+| Gate - Source leakage current | IGSS | -10 |  | 10 | μA | VGS = ±20V, VDS = 0V | 2 |+| Gate threshold voltage | VGS(th) | 0.8 |  | 2 | V | VDS = VGS, ID = 10μA | 2 |+| Static drain - source on - state resistance | RDS(on) |  | 0.49 | 0.68 | Ω | VGS = 10V, ID = 400mA (pulsed) | 2 |+| Static drain - source on - state resistance | RDS(on) |  | 0.58 | 0.81 | Ω | VGS = 4.5V, ID = 400mA (pulsed) | 2 |+| Static drain - source on - state resistance | RDS(on) |  | 1 | 4 | Ω | VGS = 2.5V, ID = 10mA (pulsed) | 2 |+| Forward Transfer Admittance | /Yfs/ | 0.5 |  |  | S | VDS = 10V, ID = 400mA (pulsed) | 2 |+| Continuous forward current | IS |  |  | 0.29 | A | Ta = 25℃ | 3 |+| Pulse forward current | ISP |  |  | 1.4 | A | Pw ≤ 10μs, Duty cycle ≤ 1% | 3 |+| Forward voltage | VSD |  |  | 1.2 | V | VGS = 0V, IS = 290mA (pulsed) | 3 |++## CAD (KiCad official)++- Symbol: `BSS138BKT116`+- Footprint: `Package_TO_SOT_SMD:SOT-23`+- 3D model: SOT-23 (KiCad packages3D, STEP)+- 3D model files: `bss138bkt116-etched.step` / `bss138bkt116-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bss138bkt116.step` / `bss138bkt116.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603052025576386560) (14 pp, sha256 `82ddb408f61e77d7`, retrieved 2026-10-19, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (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/bss138bkt116-datasheet.pdf)

@@ -0,0 +1,27 @@+{+  "schema_version": 1,+  "type": "component",+  "slug": "bss138bkt116",+  "title": "bss138bkt116",+  "brief": "ROHM Semicon MOSFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+  "version": "0.1.0",+  "author": {+    "handle": "ray",+    "name": "Ray"+  },+  "visibility": {+    "public": true+  },+  "component": {+    "mpn": "BSS138BKT116",+    "manufacturer": "ROHM Semicon",+    "package": "SOT-23",+    "pin_count": 3,+    "category": "Transistors",+    "subcategory": "MOSFET",+    "parts": {},+    "distributor_links": {+      "lcsc": "C3289984"+    }+  }+}\ No newline at end of file