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MMBT3906Q

Public Made by Adom

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Yangzhou Yangjie Elec Tech Bipolar (BJT), 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

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MMBT3906Q

Yangzhou Yangjie Elec Tech · Bipolar (BJT) · SOT-23

MMBT3906Q from Yangzhou Yangjie Elec Tech, 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 B input Base; limits stated are VEBO -5 V and VCBO -40 V, with base drive set by IB (e.g. IB=-1.0 mA at IC=-10 mA for saturation).
2 E passive Emitter of the PNP transistor; VEBO is limited to -5 V.
3 C passive Collector; VCEO -40 V, VCBO -40 V, continuous collector current -200 mA.

Key specifications

Parameter Value
Manufacturer Yangzhou Yangjie Elec Tech
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
Collector-Base Voltage VCBO -40 V Maximum Ratings, Ta=25℃ 1
Collector-Emitter Voltage VCEO -40 V Maximum Ratings, Ta=25℃ 1
Emitter-Base Voltage VEBO -5 V Maximum Ratings, Ta=25℃ 1
Collector Current -Continuous IC -200 mA Maximum Ratings, Ta=25℃ 1
Total Device Dissipation PD 300 mW Device mounted on FR-4 PCB 1.0 x 1.0 x 0.06 inch 1
Thermal Resistance Junction to Ambient RthJA 417 K/W Device mounted on FR-4 PCB 1.0 x 1.0 x 0.06 inch 1
Junction Temperature Tj -55 150 ℃ Maximum Ratings 1
Storage Temperature TSTG -55 150 ℃ Maximum Ratings 1
Collector-emitter breakdown voltage V(BR)CEO -40 Vdc IC=-1mAdc, IB=0 2
Collector-base breakdown voltage V(BR)CBO -40 Vdc IC=-10uAdc, IE=0 2
Emitter-base breakdown voltage V(BR)EBO -5 Vdc IE=-10μAdc, IC=0 2
Collector cut-off current ICBO -0.1 uAdc VCB=-40Vdc, IE =0 2
Collector cut-off current ICEX -50 nAdc VCE=-30VdcC, VEB=-3.0Vdc 2
Emitter cut-off current IEBO -0.1 uAdc VEB=-5Vdc, IC =0 2
DC current gain hFE 40 VCE=-1Vdc, IC=-0.1mAdc 2
DC current gain hFE 70 VCE=-1Vdc, IC=-1.0mAdc 2
DC current gain hFE 100 300 VCE=-1Vdc, IC=-10mAdc 2
DC current gain hFE 60 VCE=-1Vdc, IC=-50mAdc 2
DC current gain hFE 30 VCE=-1Vdc, IC=-100mAdc 2
Collector-emitter saturation voltage VCE(sat) -0.25 Vdc IC=-10mAdc, IB=-1.0mAdc 2
Collector-emitter saturation voltage VCE(sat) -0.4 Vdc IC=-50mAdc, IB=-5.0mAdc 2
Base-emitter saturation voltage VBE(sat) -0.65 -0.85 Vdc IC=-10mAdc, IB=-1.0mAdc 2
Base-emitter saturation voltage VBE(sat) -0.95 Vdc IC=-50mAdc, IB=-5.0mAdc 2
Output Capacitance Cobo 4.5 pF VCB=-5.0Vdc, f=1.0MHz, IE=0 2
Input Capacitance Cibo 10 pF VEB=-5.0Vdc, f=1.0MHz, IC=0 2
Delay time td 35 ns VCC=-3.0Vdc, VBE=-0.5Vdc, IC=-10mAdc, IB1=-1.0mAdc 2
Rise time tr 35 ns VCC=-3.0Vdc, VBE=-0.5Vdc, IC=-10mAdc, IB1=-1.0mAdc 2
Storage time ts 225 ns VCC=-3.0Vdc, IC=-10mAdc, IB1=IB2=-1.0mAdc 2
Fall time tf 75 ns VCC=-3.0Vdc, IC=-10mAdc, IB1=IB2=-1.0mAdc 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
housing black 4. Body color: Black 5
contacts tin ● Terminals: Tin plated leads, solderable per J-STD-002 and JESD22-B102 1

CAD (KiCad official)

  • Symbol: MMBT3906Q
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt3906q-etched.step / mmbt3906q-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt3906q.step / mmbt3906q.glb are the bare package body.

Provenance

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

  • Datasheet: Yangzhou Yangjie Elec Tech datasheet (6 pp, sha256 ea8526f8f0f04e35, 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