component

TTA1943

Public Made by Adom

by adom

TOSHIBA Bipolar (BJT), TO-3P. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistors-thyristorstta1943factory-2.0.0extractor-text

Verified TTA1943

by Ray · last 6 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

6 Nov 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: TTA1943 · TO-3P · 3 pins
  • ✓copper: 3 copper pads, none touching another net
  • ✓datasheet: all 3 pin names found in the 5-page datasheet
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: TO-3P-3_Vertical
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-c3fvl2qy/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
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ tta1943.kicad_sym✓ tta1943.kicad_mod✓ tta1943.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

TTA1943

TOSHIBA · Bipolar (BJT) · TO-3P

TTA1943 from TOSHIBA, in a TO-3P. 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; the datasheet rates base current IB at -1.5 A (absolute maximum).
2 COLLECTOR passive Collector terminal, also the heat sink tab; the datasheet rates collector current IC at -15 A and collector power dissipation PC at 150 W (Tc=25°C).
3 EMITTER passive Emitter terminal; the datasheet rates emitter-base voltage VEBO at -5 V (absolute maximum).

Key specifications

Parameter Value
Manufacturer TOSHIBA
Package TO-3P
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 cut-off current ICBO -5 μA VCB = -230 V, IE = 0 2
Emitter cut-off current IEBO -5 μA VEB = -5 V, IC = 0 2
Collector-emitter breakdown voltage V(BR)CEO -230 V IC = -50 mA, IB = 0 2
DC current gain hFE (1) 80 160 VCE = -5 V, IC = -1 A 2
DC current gain hFE (2) 35 VCE = -5 V, IC = -7 A 2
Collector-emitter saturation voltage VCE(sat) -3 V IC = -8 A, IB = -0.8 A 2
Base-emitter voltage VBE -1.5 V VCE = -5 V, IC = -7 A 2
Collector-base voltage VCBO -230 V Ta = 25°C 1
Collector-emitter voltage VCEO -230 V Ta = 25°C 1
Emitter-base voltage VEBO -5 V Ta = 25°C 1
Collector current IC -15 A Ta = 25°C 1
Base current IB -1.5 A Ta = 25°C 1
Collector power dissipation PC 150 W Tc = 25°C 1
Junction temperature Tj 150 °C 1
Storage temperature range Tstg -55 150 °C 1

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 -1.5 A Collector power dissipation (Tc=25°C) PC 150 W 1

CAD (KiCad official)

  • Symbol: TTA1943
  • Footprint: Package_TO_SOT_THT:TO-3P-3_Vertical
  • 3D model: TO-3P (KiCad packages3D, STEP)
  • 3D model files: tta1943-etched.step / tta1943-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); tta1943.step / tta1943.glb are the bare package body.

Provenance

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

  • Datasheet: TOSHIBA datasheet (5 pp, sha256 b60b063e8766f2e8, retrieved 2026-11-06, tier: lcsc)
  • 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