component

AD-MMBTA56

Public Made by Adom

by adom

Changjing Bipolar Transistors - BJT, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttriode-mos tube-transistorad-mmbta56factory-2.0.0extractor-text

Verified AD-MMBTA56

by Ray · last 31 Oct 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

31 Oct 2026RayPublished by the parts factory: tier lcsc, 3 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: AD-MMBTA56 · SOT-23 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 6-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-7ao8ygks/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✓ ad-mmbta56.kicad_sym✓ ad-mmbta56.kicad_mod✓ ad-mmbta56.step
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

3D Model

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Symbol & Footprint

Schematic Symbol

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

PCB Footprint

Open full view ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.

Datasheet

Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Download PDF
Contents

README

markdown

AD-MMBTA56

Changjing · Bipolar Transistors - BJT · SOT-23

AD-MMBTA56 from Changjing, 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 BASE input Base of the PNP transistor; the datasheet lists VEBO of -4 V and V(BR)EBO of -4 V minimum.
2 EMITTER passive Emitter of the PNP transistor; the datasheet lists VEBO of -4 V and a maximum collector current IC of -500 mA.
3 COLLECTOR passive Collector of the PNP transistor; the datasheet lists VCBO of -80 V, VCEO of -80 V and a continuous current IC of -500 mA.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-23
Category Triode/MOS Tube/Transistor
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 breakdown voltage V(BR)CBO -80 V IC = -100µA, IE = 0A 2
Collector-emitter breakdown voltage V(BR)CEO -80 V IC = -1mA, IB = 0A 2
Emitter-base breakdown voltage V(BR)EBO -4 V IE = -10µA, IC = 0A 2
Collector-emitter cut-off current ICEX -1 µA VCE = -60V, IB = 0A 2
Collector-base cut-off current ICBO -0.1 µA VCB = -80V, IE = 0A 2
Emitter-base cut-off current IEBO -0.1 µA VEB = -4V, IC = 0A 2
DC current gain hFE(1) 100 400 VCE = -1V, IC = -10mA 2
DC current gain hFE(2) 100 VCE = -1V, IC = -100mA 2
Collector-emitter saturation voltage VCE(sat) -0.25 V IC = -100mA, IB = -10mA 2
Base-emitter voltage VBE -1.2 V IC = -100mA, VCE = -1V 2
Transition frequency fT 50 MHz VCE = -1V, IC = -100mA, f = 100MHz 2
Collector-base voltage VCBO -80 V Tj = 25°C 2
Collector-emitter voltage VCEO -80 V Tj = 25°C 2
Emitter-base voltage VEBO -4 V Tj = 25°C 2
Collector continuous current IC -500 mA Tj = 25°C 2
Collector power dissipation PC 350 mW Tj = 25°C 2
Operating junction and storage temperature range Tj, Tstg -55 150 °C 2
Thermal resistance from junction to ambient RθJA 555 °C/W Mounted on 1 inch2 FR-4 board with 1oz. copper, still air, Ta = 25℃ 2

CAD (KiCad official)

  • Symbol: AD-MMBTA56
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: ad-mmbta56-etched.step / ad-mmbta56-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ad-mmbta56.step / ad-mmbta56.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (6 pp, sha256 261434735828d820, retrieved 2026-10-31, 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