Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity

main

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	cpc3909ctr: viewers · Ray	1d ago
cpc3909ctr-etched.glb	Publish 0.1.0 · Ray	1d ago
cpc3909ctr-etched.step	cpc3909ctr: factory component page (tier=lcsc) · Ray	1d ago
cpc3909ctr-hero.glb	cpc3909ctr: hero GLB from the etched model (keeps the MPN mark) · Ray	1d ago
cpc3909ctr-hero.overlay.json	Publish 0.1.0 · Ray	1d ago
cpc3909ctr.glb	Publish 0.1.0 · Ray	1d ago
cpc3909ctr.kicad_mod	Publish 0.1.0 · Ray	1d ago
cpc3909ctr.kicad_sym	Publish 0.1.0 · Ray	1d ago
cpc3909ctr.lbr	Publish 0.1.0 · Ray	1d ago
cpc3909ctr.step	Publish 0.1.0 · 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

CPC3909CTR

Littelfuse/IXYS · MOSFETs · SOT-89

CPC3909CTR from Littelfuse/IXYS, in a SOT-89. 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	GATE	input	Gate of the N-channel depletion-mode FET; VGS(off) is -0.9 V to -3.1 V, absolute maximum VGS is 15 V and gate leakage is at most 100 nA at VGS=15 V.
2	DRAIN	passive	Drain of the FET, rated for 400 V drain-to-source (V(BR)DSX), with RDS(on) of 4.5 ohm typical and 9 ohm maximum at VGS=0 V and IDS=300 mA.
3	SOURCE	passive	Source of the FET, with drain current of at least 300 mA at VGS=0 V and VDS=5 V.

Key specifications

Parameter	Value
Manufacturer	Littelfuse/IXYS
Package	SOT-89
Category	Triode/MOS Tube/Transistor
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
Gate-to-Source Off Voltage	VGS(off)	-0.9		-3.1	V	ID=2A, VDS=10V, VDS=100V	2
Drain Current	ID	300			mA	VGS=0V, VDS=5V	2
Drain-to-Source Leakage Current	IDS(off)			20	nA	VGS=-5V, VDS=210V	2
Drain-to-Source Leakage Current	IDS(off)			1	A	VGS=-5V, VDS=400V	2
On-Resistance	RDS(on)		4.5	9		VGS=0V, IDS=300mA	2
Gate Leakage Current	IGSS			100	nA	VGS=15V	2
Drain-to-Source Voltage	V(BR)DSX			400	V		2
Gate-to-Source Voltage	VGS			15	V		2
Total Package Dissipation SOT-89				1.1	W	Mounted on 1"x1" FR4 board	2
Operational Temperature		-40		110	oC		2
Storage Temperature		-40		125	oC		2
Thermal Resistance Junction to Case SOT-89	RJC			50	ºC/W		2
Thermal Resistance Junction to Ambient SOT-89	RJA			90	ºC/W		2

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		Circuits Division classified all of its plastic encapsulated devices for moisture sensitivity according to the latest version of the joint industry standard, IPC/JEDEC J-STD-020, in force at the time	3

CAD (KiCad official)

Symbol: CPC3909CTR
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89 (KiCad packages3D, STEP)
3D model files: cpc3909ctr-etched.step / cpc3909ctr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cpc3909ctr.step / cpc3909ctr.glb are the bare package body.

Provenance

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

Datasheet: Littelfuse/IXYS datasheet (5 pp, sha256 6a8e7761b2ec6bf9, retrieved 2026-11-07, 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