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Contents

README

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KA7909TU-JSM

JSMSEMI · MOSFETs · TO-220

KA7909TU-JSM from JSMSEMI, in a TO-220. 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 GND power_in Ground reference pin of the negative regulator, pin 1 as marked on the TO-220 (Dual Gauge) drawing.
2 Input power_in Negative input voltage pin (Vin), with an absolute maximum DC input voltage of -35 V.
3 Output power_out Regulated -9 V output (typ. -9.0 V, -8.64 V to -9.36 V at Vin=-19 V, Io=0.5 A) with output current in excess of 1.5 A.

Key specifications

Parameter Value
Manufacturer JSMSEMI
Package TO-220
Category Transistors/Thyristors
Pins 3

CAD (KiCad official)

  • Symbol: KA7909TU-JSM
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: ka7909tu-jsm-etched.step / ka7909tu-jsm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ka7909tu-jsm.step / ka7909tu-jsm.glb are the bare package body.

Provenance

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

  • Datasheet: JSMSEMI datasheet (3 pp, sha256 d615975f519e9c98, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (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