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BSS123Q-7

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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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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

BSS123Q-7

Diodes Incorporated · MOSFETs · SOT-23

BSS123Q-7 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; gate-source voltage is rated ±20 V continuous, with a gate 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 enhancement mode MOSFET.
3 D passive Drain; drain-source voltage is rated 100 V, with continuous drain current of 0.17 A and pulsed 0.68 A.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-23
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 = 250A 2
Zero Gate Voltage Drain Current IDSS 0.1 A VDS = 100V, VGS = 0V 2
Zero Gate Voltage Drain Current at 150C IDSS 30 A VDS = 100V, VGS = 0V @ TA = +150°C (Note 7) 2
Zero Gate Voltage Drain Current IDSS 10 nA VDS = 20V, VGS = 0V 2
Gate-Source 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) 4 6 Ω VGS = 10V, ID = 0.17A 2
Static Drain-Source On-Resistance RDS(ON) 3.6 10 Ω VGS = 4.5V, ID = 0.17A 2
Forward Transfer Admittance gFS 80 370 ms VDS =10V, ID = 0.17A, f = 1.0kHz 2
Diode Forward Voltage VSD 0.84 1.3 V VGS = 0V, IS = 0.34A 2
Input Capacitance Ciss 22 60 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Output Capacitance Coss 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 Delay Time tD(ON) 8 ns VGS = 10V, VDD = 30V, ID = 0.28A, RGEN = 50Ω 2
Turn-On Rise Time tR 8 ns VGS = 10V, VDD = 30V, ID = 0.28A, RGEN = 50Ω 2
Turn-Off Delay Time tD(OFF) 13 ns VGS = 10V, VDD = 30V, ID = 0.28A, RGEN = 50Ω 2
Turn-Off Fall Time tF 16 ns VGS = 10V, VDD = 30V, ID = 0.28A, RGEN = 50Ω 2
Drain-Source Voltage VDSS 100 V TA = +25°C 2
Gate-Source Voltage Continuous VGSS -20 20 V TA = +25°C 2
Continuous Drain Current ID 0.17 A VGS = 10V, TA = +25°C (Note 5) 2
Pulsed Drain Current IDM 0.68 A VGS = 10V, TA = +25°C (Note 5) 2
Power Dissipation PD 300 mW TA = +25°C (Note 5) 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Thermal Resistance, Junction to Ambient RθJA 417 °C/W TA = +25°C (Note 5) 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  Terminals: Matte Tin Finish Annealed over Alloy 42 Leadframe (Lead Free Plating). Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: BSS123Q-7
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: bss123q-7-etched.step / bss123q-7-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); bss123q-7.step / bss123q-7.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 a24f18391556ccee, retrieved 2026-10-22, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-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