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RN1405

Public Made by Adom

by adom

TOSHIBA Digital Transistors, TO-236-3(SOT-23-3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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RN1405

TOSHIBA · Digital Transistors · TO-236-3(SOT-23-3)

RN1405 from TOSHIBA, in a TO-236-3(SOT-23-3). 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 B input Base input of the NPN transistor with built-in bias resistors (R1 = 2.2 kΩ in series, R2 = 47 kΩ base-emitter for RN1405); VEBO max 5 V.
2 E passive Emitter of the NPN transistor, normally connected to ground in switching/inverter circuits.
3 C passive Collector of the NPN transistor; VCEO max 50 V, IC max 100 mA.

Key specifications

Parameter Value
Manufacturer TOSHIBA
Package TO-236-3(SOT-23-3)
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
Input resistor R1 (built-in bias resistor) R1 1.54 2.2 2.86 kΩ 4
Resistor ratio R1/R2 R1/R2 0.0421 0.0468 0.0515 4
Collector cut-off current ICBO 100 nA VCB = 50 V, IE = 0 mA 4
Collector cut-off current ICEO 500 nA VCE = 50 V, IB = 0 mA 4
Collector-emitter saturation voltage VCE(sat) 0.1 0.3 V IC = 5 mA, IB = 0.25 mA 4
Collector-base voltage VCBO 50 V 3
Collector current IC 100 mA 3
Collector power dissipation PC 200 mW 3
Junction temperature Tj 150 °C 3
Storage temperature Tstg -55 150 °C 3

CAD (KiCad official)

  • Symbol: RN1405
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: TO-236-3(SOT-23-3) (KiCad packages3D, STEP)
  • 3D model files: rn1405-etched.step / rn1405-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rn1405.step / rn1405.glb are the bare package body.

Provenance

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

  • Datasheet: TOSHIBA datasheet (11 pp, sha256 6acb19feab63e3a2, retrieved 2026-10-15, tier: manufacturer)
  • 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