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BSS138-7-F

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Diodes Incorporated MOSFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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BSS138-7-F

Diodes Incorporated · MOSFETs · SOT-23

BSS138-7-F from Diodes Incorporated, 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 G input Gate; the gate-source voltage is rated at ±20V continuous (40V non-repetitive pulse under 50µs), with a threshold of 0.5V min to 1.5V max at ID = 250µA.
2 S passive Source terminal of the N-channel MOSFET, shown at the bottom right of the top view and connected to the body diode anode.
3 D passive Drain, the single terminal on the top side of the package; rated at 50V VDSS and 200mA continuous ID (1A pulsed).

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
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 Breakdown Voltage BVDSS 50 75 V VGS = 0V, ID = 250A 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 = 250A 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
Input Capacitance Ciss 50 pF 2
Output Capacitance Coss 25 pF 2
Reverse Transfer Capacitance Crss 8 pF 2
Turn-On Delay Time tD(ON) 20 ns 2
Turn-Off Delay Time tD(OFF) 20 ns 2
Drain-Source Voltage VDSS 50 V 2
Drain-Gate Voltage VDGR 50 V RGS 20kΩ 2
Gate-Source Voltage Continuous VGSS 20 V 2
Gate-Source Voltage Non Repetitive VGSS 40 V Pulse Width<50s 2
Drain Current Continuous ID 200 mA 2
Pulsed Drain Current IDM 1 A 10μs Pulse Duty Cycle = 1% 2
Power Dissipation PD 300 mW Note 5 2
Thermal Resistance, Junction to Ambient RJA 417 C/W Note 5 2
Operating and Storage Temperature Range TJ, TSTG -55 150 C 2

CAD (KiCad official)

  • Symbol: BSS138-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bss138-7-f-etched.step / bss138-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bss138-7-f.step / bss138-7-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 c93dcb33f41424e6, retrieved 2026-10-09, 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