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BSS138W-7-F

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Diodes Incorporated MOSFETs, SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Datasheet

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Contents

README

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BSS138W-7-F

Diodes Incorporated · MOSFETs · SOT-323

BSS138W-7-F from Diodes Incorporated, in a SOT-323. 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 Gate input Control terminal with 0-20V continuous gate-source voltage rating and gate threshold voltage of 0.5-1.5V at VDS=VGS and ID=250µA.
2 Source power_in Reference terminal for gate-source voltage control, typically grounded in load switch and power management applications.
3 Drain tri_state Drain terminal rated for 200mA maximum continuous current at 50V maximum drain-source voltage with on-resistance of 3.5Ω maximum at VGS=10V.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-323
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 Breakdown Voltage BVDSS 50 75 V VGS = 0V, ID = 250µA 2
Zero Gate Voltage Drain Current IDSS 0.5 µA VDS = 50V, VGS = 0V 2
Gate-Body Leakage IGSS 100 nA VGS = 20V, VDS = 0V 2
Gate Threshold Voltage VGS(TH) 0.5 1.2 1.5 V VDS = VGS, ID = 250µA 2
Static Drain-Source On-Resistance RDS(ON) 1.4 3.5 Ω VGS = 10V, ID = 0.22A 2
Forward Transconductance gFS 100 mS VDS = 25V, ID = 0.2A, f = 1.0kHz 2
Drain-Source Voltage VDSS 50 V 2
Drain-Gate Voltage VDGR 50 V RGS ≤ 20kΩ (Note 5) 2
Gate-Source Voltage Continuous VGSS 20 V Continuous 2
Drain Current Continuous ID 200 mA Continuous (Note 6) 2
Total Power Dissipation PD 200 mW Note 6 2
Thermal Resistance, Junction to Ambient RJA 625 C/W Note 6 2
Operating and Storage Temperature Range TJ, TSTG -55 150 C 2
Input Capacitance Ciss 50 pF 2
Output Capacitance Coss 25 pF VDS = 10V, VGS = 0V, f = 1.0MHz 2
Reverse Transfer Capacitance Crss 8 pF VDS = 10V, VGS = 0V, f = 1.0MHz 2
Turn-On Delay Time tD(ON) 20 ns VDD = 30V, ID = 0.2A, RGEN = 50Ω 2
Turn-Off Delay Time tD(OFF) 20 ns VDD = 30V, ID = 0.2A, RGEN = 50Ω 2

CAD (KiCad official)

  • Symbol: BSS138W-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: bss138w-7-f-etched.step / bss138w-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bss138w-7-f.step / bss138w-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (6 pp, sha256 fe35c9e874e30df7, retrieved 2026-09-23, 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