component

SS8050D331

Public Made by Adom

by adom

ALJ Bipolar (BJT), TO-92. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componenttransistors-thyristorsss8050d331factory-2.0.0extractor-text

Verified SS8050D331

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 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: SS8050D331 · TO-92 · 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: TO-92_Inline
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-82c2il6z/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✓ ss8050d331.kicad_sym✓ ss8050d331.kicad_mod✓ ss8050d331.step
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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs Publish 0.1.0 · Ray 1d ago
viewers ss8050d331: viewers · Ray 1d ago
package.json Publish 0.1.0 · Ray 1d ago
page.json Set visibility: public · Ray 1d ago
README.md Publish 0.1.0 · Ray 1d ago
ss8050d331-etched.glb Publish 0.1.0 · Ray 1d ago
ss8050d331-etched.step ss8050d331: factory component page (tier=lcsc) · Ray 1d ago
ss8050d331-hero.glb ss8050d331: hero GLB from the etched model (keeps the MPN mark) · Ray 1d ago
ss8050d331-hero.overlay.json Publish 0.1.0 · Ray 1d ago
ss8050d331.glb Publish 0.1.0 · Ray 1d ago
ss8050d331.kicad_mod Publish 0.1.0 · Ray 1d ago
ss8050d331.kicad_sym Publish 0.1.0 · Ray 1d ago
ss8050d331.lbr Publish 0.1.0 · Ray 1d ago
ss8050d331.step Publish 0.1.0 · Ray 1d ago
verification.json Verified: Published by the parts factory: tier lcsc, 3 pins · Ray 1d ago

SS8050D331

ALJ · Bipolar (BJT) · TO-92

SS8050D331 from ALJ, in a TO-92. 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 Emitter passive Emitter terminal of the NPN transistor, with emitter-base breakdown voltage V(BR)EBO of 5 V minimum and VEBO rated at 5 V.
2 Base input Base terminal; base-emitter saturation voltage VBE(sat) is 1.2 V at IC = 800mA with IB = 80mA.
3 Collector passive Collector terminal; maximum ratings are VCBO 40 V, VCEO 25 V and collector current IC 1.5 A.

Key specifications

Parameter Value
Manufacturer ALJ
Package TO-92
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 breakdown voltage V(BR)CBO 40 V IC = 100µA, IE = 0 1
Collector-emitter breakdown voltage V(BR)CEO 25 V IC = 1mA, IB = 0 1
Emitter-base breakdown voltage V(BR)EBO 5 V IE = 100µA, IC = 0 1
Collector cut-off current ICBO 100 nA VCB = 40V, IE = 0 1
Emitter cut-off current IEBO 100 nA VEB = 5V, IC = 0 1
DC current gain hFE(1) hFE(1) 100 400 VCE = 1V, IC = 100mA 1
DC current gain hFE(2) hFE(2) 40 VCE = 1V, IC = 800mA 1
Collector-emitter saturation voltage VCE(sat) 0.5 V IC = 800mA, IB = 80mA 1
Base-emitter saturation voltage VBE(sat) 1.2 V IC = 800mA, IB = 80mA 1
Base-emitter voltage VBE 1 V VCE = 1V, IC = 10mA 1
Transition frequency fT 100 MHz VCE = 10V, IC = 50mA, f = 30MHz 1
Collector-base voltage VCBO 40 V 1
Collector-emitter voltage VCEO 25 V 1
Emitter-base voltage VEBO 5 V 1
Collector current IC 1.5 A 1
Junction temperature Tj 150 °C 1
Storage temperature Tstg -55 150 °C 1
Collector power dissipation PCM 1 W TA = 25°C 1
Collector power dissipation PCM 2 W TC = 25°C 1
Collector power dissipation PC 625 mW 1
Thermal resistance from junction to ambient 200 °C/W 1

CAD (KiCad official)

  • Symbol: SS8050D331
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: ss8050d331-etched.step / ss8050d331-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ss8050d331.step / ss8050d331.glb are the bare package body.

Provenance

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

  • Datasheet: ALJ datasheet (3 pp, sha256 26bedf810d57cfcb, retrieved 2026-11-05, 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