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MMBT3906G-AE3-R

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UTC(Unisonic Tech) Bipolar Transistors - BJT, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistorsmmbt3906g-ae3-rfactory-2.0.0extractor-text

Verified MMBT3906G-AE3-R

by Ray · last 30 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

30 Oct 2026RayPublished by the parts factory: tier mfr, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: MMBT3906G-AE3-R · SOT-23 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 3-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: SOT-23
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-_ki5cqaf/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 3 pins = 3 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 3 pins agree
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ mmbt3906g-ae3-r.kicad_sym✓ mmbt3906g-ae3-r.kicad_mod✓ mmbt3906g-ae3-r.step
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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 2h ago
viewers mmbt3906g-ae3-r: viewers · Ray 2h ago
mmbt3906g-ae3-r-etched.glb Publish 0.1.0 · Ray 2h ago
mmbt3906g-ae3-r-etched.step mmbt3906g-ae3-r: factory component page (tier=mfr) · Ray 2h ago
mmbt3906g-ae3-r-hero.glb mmbt3906g-ae3-r: hero GLB from the etched model (keeps the MPN mark) · Ray 2h ago
mmbt3906g-ae3-r-hero.overlay.json Publish 0.1.0 · Ray 2h ago
mmbt3906g-ae3-r.glb Publish 0.1.0 · Ray 2h ago
mmbt3906g-ae3-r.kicad_mod Publish 0.1.0 · Ray 2h ago
mmbt3906g-ae3-r.kicad_sym Publish 0.1.0 · Ray 2h ago
mmbt3906g-ae3-r.lbr Publish 0.1.0 · Ray 2h ago
mmbt3906g-ae3-r.step Publish 0.1.0 · Ray 2h ago
package.json Publish 0.1.0 · Ray 2h ago
page.json Set visibility: public · Ray 2h ago
README.md Publish 0.1.0 · Ray 2h ago
verification.json Verified: Published by the parts factory: tier mfr, 3 pins · Ray 2h ago

MMBT3906G-AE3-R

UTC(Unisonic Tech) · Bipolar Transistors - BJT · SOT-23

MMBT3906G-AE3-R from UTC(Unisonic 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 E passive Emitter of the PNP transistor; the device is rated for VEBO -5 V and IC -200 mA absolute maximum.
2 B passive Base of the PNP transistor; base current IB is rated at -50 mA absolute maximum.
3 C passive Collector of the PNP transistor; rated for VCBO -40 V, VCEO -40 V and IC -200 mA absolute maximum, with PC 350 mW collector dissipation.

Key specifications

Parameter Value
Manufacturer UTC(Unisonic Tech)
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
Collector Cut-off Current ICEX -50 nA VCE=-30V, VEB=-3V 2
Base Cut-off Current IBL -50 nA VCE=-30V, VEB=-3V 2
Collector-Base Breakdown Voltage VCBO -40 V IC=-10A,IE=0 2
Collector-Emitter Breakdown Voltage VCEO -40 V IC=-1mA, IB=0 2
Emitter-Base Breakdown Voltage VEBO -5 V IE=-10A, IC=0 2
DC Current Gain hFE1 hFE1 60 VCE=-1V, IC=-0.1mA 2
DC Current Gain hFE2 hFE2 80 VCE=-1V, IC=-1mA 2
DC Current Gain hFE3 hFE3 100 300 VCE=-1V, IC=-10mA 2
DC Current Gain hFE4 hFE4 60 VCE=-1V, IC=-50mA 2
DC Current Gain hFE5 hFE5 30 VCE=-1V, IC=-100mA 2
Collector-Emitter Saturation Voltage 1 VCE(SAT)1 -0.25 V IC=-10mA, IB=-1mA 2
Collector-Emitter Saturation Voltage 2 VCE(SAT)2 -0.4 V IC=-50mA, IB=-5mA 2
Base-Emitter Saturation Voltage 1 VBE(SAT)1 -0.65 -0.85 V IC=-10mA, IB=-1mA 2
Base-Emitter Saturation Voltage 2 VBE(SAT)2 -0.95 V IC=-50mA, IB=-5mA 2
Transition Frequency fT 250 MHz VCE=-20V, IC=-10mA, f=100MHz 2
Output Capacitance Cob 4.5 pF VCB=-5V,IE=0, f=1MHz 2
Turn on Time tON 70 ns VCC=-3V, VBE=-0.5V, IC=-10mA, IB1=-1mA 2
Turn off Time tOFF 300 ns IB1=1B2=-1mA 2
Collector Base Voltage VCBO -40 V 2
Collector Emitter Voltage VCEO -40 V 2
Emitter Base Voltage VEBO -5 V 2
Collector Current IC -200 mA 2
Base Current IB -50 mA 2
Collector Dissipation PC 350 mW 2
Junction Temperature TJ 150 °С 2
Storage Temperature TSTG -55 150 °С 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 PC Base Current IB -50 mA Collector Dissipation PC 350 mW 2

CAD (KiCad official)

  • Symbol: MMBT3906G-AE3-R
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt3906g-ae3-r-etched.step / mmbt3906g-ae3-r-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt3906g-ae3-r.step / mmbt3906g-ae3-r.glb are the bare package body.

Provenance

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

  • Datasheet: UTC(Unisonic Tech) datasheet (3 pp, sha256 a56f29df4b88a939, retrieved 2026-10-30, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-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