component

S9018H331

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-thyristorss9018h331factory-2.0.0extractor-text
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
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 18d ago
viewers s9018h331: viewers · Ray 18d ago
package.json Publish 0.1.1 · Ray 14m ago
page.json Publish 0.1.1 · Ray 14m ago
README.md Publish 0.1.0 · Ray 18d ago
s9018h331-etched.glb Publish 0.1.0 · Ray 18d ago
s9018h331-etched.step s9018h331: factory component page (tier=lcsc) · Ray 18d ago
s9018h331-hero.glb s9018h331: pin labels beside their pads (component-hero#2, hero_glb a625f4b) · Ray 14m ago
s9018h331-hero.overlay.json s9018h331: pin labels beside their pads (component-hero#2, hero_glb a625f4b) · Ray 14m ago
s9018h331.glb Publish 0.1.0 · Ray 18d ago
s9018h331.kicad_mod Publish 0.1.0 · Ray 18d ago
s9018h331.kicad_sym Publish 0.1.0 · Ray 18d ago
s9018h331.lbr Publish 0.1.0 · Ray 18d ago
s9018h331.step Publish 0.1.0 · Ray 18d ago

S9018H331

ALJ · Bipolar (BJT) · TO-92

S9018H331 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 of the NPN transistor; VEBO max 4 V and breakdown V(BR)EBO min 4 V at IE=100µA.
2 Base passive Base of the NPN transistor; saturation VBE(sat) max 1.42 V at IC=10mA, IB=1mA.
3 Collector passive Collector of the NPN transistor; VCBO 25 V, VCEO 18 V, IC max 50 mA.

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 Voltage VCBO 25 V Ta=25°C 1
Collector Emitter Voltage VCEO 18 V Ta=25°C 1
Emitter Base Voltage VEBO 4 V Ta=25°C 1
Collector Current IC 50 mA Ta=25°C 1
Collector Power Dissipation PC 0.4 W Ta=25°C 1
Junction Temperature Tj 150 °C 1
Storage Temperature Tstg -55 150 °C -55~+150 1
Thermal Resistance From Junction To Ambient RθJA 312.5 °C/W 1
Collector-base breakdown voltage V(BR)CBO 25 V IC = 100µA, IE = 0 1
Collector-emitter breakdown voltage V(BR)CEO 18 V IC = 0.1mA, IB = 0 1
Emitter-base breakdown voltage V(BR)EBO 4 V IE = 100µA, IC = 0 1
Collector cut-off current ICBO 0.1 μA VCB = 20V, IE = 0 1
Emitter cut-off current IEBO 0.1 μA VEB = 3V, IC = 0 1
DC current gain hFE 100 300 VCE = 5V, IC = 1mA 1
Collector-emitter saturation voltage VCE(sat) 0.5 V IC = 10mA, IB = 1mA 1
Base-emitter saturation voltage VBE(sat) 1.42 V IC = 10mA, IB = 1mA 1
Transition frequency fT 800 MHz VCE=5V, IC=50mA, f=400MHz 1

CAD (KiCad official)

  • Symbol: S9018H331
  • Footprint: Package_TO_SOT_THT:TO-92_Inline
  • 3D model: TO-92 (KiCad packages3D, STEP)
  • 3D model files: s9018h331-etched.step / s9018h331-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); s9018h331.step / s9018h331.glb are the bare package body.

Provenance

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

  • Datasheet: ALJ datasheet (2 pp, sha256 8a3c533891bf4bd0, retrieved 2026-10-23, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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