component

2SA1943OTU

Public Made by Adom

by adom

onsemi Bipolar Transistors - BJT, TO-264-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttriode-mos tube-transistor2sa1943otufactory-2.0.0extractor-text

Verified 2SA1943OTU

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: 2SA1943OTU · TO-264-3 · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 7-page datasheet
  • ✓distributor: lcsc C898059, digikey 2SA1943OTU-ND, mouser 512-2SA1943OTU
  • ✓family: TO-264-3_Vertical
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-kf2899d0/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✓ 2sa1943otu.kicad_sym✓ 2sa1943otu.kicad_mod✓ 2sa1943otu.step
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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

markdown

2SA1943OTU

onsemi · Bipolar Transistors - BJT · TO-264-3

2SA1943OTU from onsemi, in a TO-264-3. 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 terminal; base current IB is rated at -1.5 A (absolute maximum) for this PNP device.
2 Collector passive Collector terminal; collector current IC is rated at -17 A and collector-base voltage BVCBO at -250 V (absolute maximum).
3 Emitter passive Emitter terminal; emitter-base voltage BVEBO is rated at -5 V (absolute maximum).

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-264-3
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 BVCBO -250 V IC=-5mA, IE=0 3
Collector-Emitter Breakdown Voltage BVCEO -250 V IC=-10mA, RBE=∞ 3
Emitter-Base Breakdown Voltage BVEBO -5 V IE=-5mA, IC=0 3
Collector Cut-off Current ICBO -5 µA VCB=-230V, IE=0 3
Emitter Cut-off Current IEBO -5 µA VEB=-5V, IC=0 3
DC Current Gain (hFE1) hFE1 55 160 VCE=-5V, IC=-1A 3
DC Current Gain (hFE2) hFE2 35 60 VCE=-5V, IC=-7A 3
Collector-Emitter Saturation Voltage VCE(sat) -0.4 -3 V IC=-8A, IB=-0.8A 3
Base-Emitter On Voltage VBE(on) -1 -1.5 V VCE=-5V, IC=-7A 3
Current Gain Bandwidth Product fT 30 MHz VCE=-5V, IC=-1A 3
Output Capacitance Cob 360 pF VCB=-10V, f=1MHz 3
Collector-Base Voltage BVCBO -250 V Ta=25°C 2
Collector-Emitter Voltage BVCEO -250 V Ta=25°C 2
Emitter-Base Voltage BVEBO -5 V Ta=25°C 2
Collector Current IC -17 A Ta=25°C 2
Base Current IB -1.5 A Ta=25°C 2
Total Device Dissipation PD 150 W TC=25°C 2
Derating above 25°C 1.04 W/°C derate above 25°C 2
Junction and Storage Temperature TJ, TSTG -50 150 °C 2
Thermal Resistance, Junction to Case RθJC 0.83 °C/W 2

CAD (KiCad official)

  • Symbol: 2SA1943OTU
  • Footprint: Package_TO_SOT_THT:TO-264-3_Vertical
  • 3D model: TO-264-3 (KiCad packages3D, STEP)
  • 3D model files: 2sa1943otu-etched.step / 2sa1943otu-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 2sa1943otu.step / 2sa1943otu.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 dc4bcc9dee482652, 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