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BSS123WQ-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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BSS123WQ-7-F

Diodes Incorporated · MOSFETs · SOT-323

BSS123WQ-7-F from Diodes Incorporated, in a SOT-323. 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 MOSFET control input, with gate-source voltage limited to ±20 V continuous and a threshold of 0.8 V min to 2.0 V max at VDS = VGS, ID = 1 mA.
2 S passive Source terminal of the N-channel MOSFET, connected to the body diode anode and normally the return path for the 170 mA continuous drain current.
3 D passive Drain terminal of the N-channel MOSFET, rated for 100 V drain-source voltage and 170 mA continuous drain current.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-323
Category Transistors
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 100 V VGS = 0V, ID = 250µA 2
Zero Gate Voltage Drain Current IDSS 1 µA VDS = 100V, VGS = 0V 2
Zero Gate Voltage Drain Current IDSS 10 nA VDS = 20V, VGS = 0V 2
Gate-Body Leakage, Forward IGSSF 50 nA VGS = 20V, VDS = 0V 2
Gate Threshold Voltage VGS(th) 0.8 1.4 2 V VDS = VGS, ID = 1mA 2
Static Drain-Source On-Resistance RDS(ON) 6 Ω VGS = 10V, ID = 0.17A 2
Static Drain-Source On-Resistance RDS(ON) 10 Ω VGS = 4.5V, ID = 0.17A 2
Forward Transconductance gFS 80 370 mS VDS = 10V, ID = 0.17A, f = 1.0kHz 2
Drain-Source Diode Forward Voltage VSD 0.84 1.3 V VGS = 0V, IS = 0.34A 2
Input Capacitance Ciss 29 60 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Output Capacitance Coss 10 15 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Reverse Transfer Capacitance Crss 2 6 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Turn-On Rise Time tr 8 ns VDD = 30V, ID = 0.28A, RGEN = 6.0Ω, VGS = 10V 2
Turn-Off Fall Time tf 16 ns VDD = 30V, ID = 0.28A, RGEN = 6.0Ω, VGS = 10V 2
Turn-On Delay Time tD(ON) 8 ns VDD = 30V, ID = 0.28A, RGEN = 6.0Ω, VGS = 10V 2
Turn-Off Delay Time tD(OFF) 13 ns VDD = 30V, ID = 0.28A, RGEN = 6.0Ω, VGS = 10V 2
Drain-Source Voltage VDSS 100 V TA = +25°C 2
Drain-Gate Voltage VDGR 100 V RGS ≤ 20kΩ, TA = +25°C 2
Gate-Source Voltage Continuous VGSS 20 V TA = +25°C 2
Drain Current Continuous ID 170 mA TA = +25°C, Note 5 2
Drain Current Pulsed IDM 680 mA TA = +25°C, Note 5 2
Total Power Dissipation PD 200 mW TA = +25°C, Note 5 2
Thermal Resistance, Junction to Ambient RθJA 625 °C/W Note 5 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin • Terminal Connections: See Diagram • Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe 1

CAD (KiCad official)

  • Symbol: BSS123WQ-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: bss123wq-7-f-etched.step / bss123wq-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bss123wq-7-f.step / bss123wq-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (5 pp, sha256 dfcdbeddb94359eb, retrieved 2026-10-22, tier: manufacturer)
  • 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