component

BSS138DW

Public Made by Adom

by adom

YFW MOSFETs, SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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BSS138DW

YFW · MOSFETs · SOT-363

BSS138DW from YFW, in a SOT-363. 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 S1 passive Source of MOSFET 1 (N-channel, VDS max 50V, ID 0.22A continuous).
2 G1 input Gate of MOSFET 1, with gate-source voltage limit of ±20V and threshold of 0.80 to 1.50V at ID=1mA.
3 D2 passive Drain of MOSFET 2 (VDS max 50V, ID 0.22A continuous, RDS(on) max 3.5Ω at VGS=10V).
4 S2 passive Source of MOSFET 2 (N-channel, VDS max 50V, ID 0.22A continuous).
5 G2 input Gate of MOSFET 2, with gate-source voltage limit of ±20V and threshold of 0.80 to 1.50V at ID=1mA.
6 D1 passive Drain of MOSFET 1 (VDS max 50V, ID 0.22A continuous, RDS(on) max 3.5Ω at VGS=10V).

Key specifications

Parameter Value
Manufacturer YFW
Package SOT-363
Category Transistors/Thyristors
Pins 6

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 VDS 50 V 1
Continuous Gate-Source Voltage VGSS -20 20 V 1
Continuous Drain Current ID 0.22 A 1
Power Dissipation PD 0.3 W 1
Thermal Resistance from Junction to Ambient RθJA 417 ℃/W 1
Operating Temperature Tj 150 ℃ 1
Storage Temperature Tstg -55 150 ℃ 1
Drain-source breakdown voltage V(BR)DSS 50 V VGS = 0V, ID =250µA 2
Gate-body leakage IGSS -500 500 nA VDS =0V, VGS =±20V 2
Zero gate voltage drain current IDSS 0.5 µA VDS =50V, VGS =0V 2
Zero gate voltage drain current IDSS 100 nA VDS =30V, VGS =0V 2
Gate-threshold voltage (note 1) VGS(th) 0.8 1.5 V VDS =VGS, ID =1mA 2
Static drain-source on-resistance (note 1), VGS=10V RDS(on) 3.5 Ω VGS =10V, ID =0.22A 2
Static drain-source on-resistance (note 1), VGS=4.5V RDS(on) 6 Ω VGS =4.5V, ID =0.22A 2
Body diode forward voltage (note 1) VSD 1.4 V IS=0.44A, VGS = 0V 2

CAD (KiCad official)

  • Symbol: BSS138DW
  • Footprint: Package_TO_SOT_SMD:SOT-363_SC-70-6
  • 3D model: SOT-363 (KiCad packages3D, STEP)
  • 3D model files: bss138dw-etched.step / bss138dw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bss138dw.step / bss138dw.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: YFW datasheet (4 pp, sha256 1514ee98107d142b, retrieved 2026-10-18, 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