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FDD4243

Public Made by Adom

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UMW MOSFETs, TO-252. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FDD4243

UMW · MOSFETs · TO-252

FDD4243 from UMW, in a TO-252. 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 G input GATE of the -40V P-Channel MOSFET; the datasheet rates gate-to-source voltage VGS at ±20 V.
2 D passive DRAIN of the MOSFET; rated drain-to-source voltage VDS = -40 V and continuous drain current -14 A (package limited) at TC = 25°C.
3 S passive SOURCE of the MOSFET; the reference terminal for the VGS and VDS ratings given in the absolute maximum table.

Key specifications

Parameter Value
Manufacturer UMW
Package TO-252
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
Drain to Source Voltage VDS -40 V 1
Gate to Source Voltage VGS -20 20 V 1
Drain Current -Continuous (Package limited) ID -14 A TC=25°C 1
Drain Current -Continuous (Silicon limited) ID -24 A TC=25°C (Note 1) 1
Drain Current -Continuous ID -6.7 A TA=25°C (Note 1a) 1
Drain Current -Pulsed ID -60 A 1
Single Pulse Avalanche Energy EAS 84 mJ Note 3: TJ=25°C, L=3mH, IAS=7.5A, VDD=40V, VGS=10V 1
Power Dissipation PD 42 W TC=25°C 1
Power Dissipation PD 3 W TA=25°C (Note 1a) 1
Operating and Storage Junction Temperature Range TJ, TSTG -55 150 °C 1
Drain-Source Breakdown Voltage BVDSS -40 V ID=-250µA, VGS=0V 3
Zero Gate Voltage Drain Current IDSS -1 µA VDS=-32V, VGS=0V 3
Zero Gate Voltage Drain Current at TJ=125°C IDSS -100 µA VDS=-32V, VGS=0V, TJ=125°C 3
Gate to Source Leakage Current IGSS -100 100 nA VGS=±20V, VDS=0V 3
Gate to Source Threshold Voltage VGS(th) -1.6 -3 V VDS=VGS, ID=-250µA 3
Drain to Source On Resistance RDS(ON) 13 20 mΩ VGS=-10V, ID=-6.7A 3
Drain to Source On Resistance RDS(ON) 16 30 mΩ VGS=-4.5V, ID=-5.5A 3
Input Capacitance Ciss 1165 1550 pF VDS=-20V, VGS=0V, f=1MHz 3
Output Capacitance Coss 165 220 pF VDS=-20V, VGS=0V, f=1MHz 3
Reverse Transfer Capacitance Crss 90 135 pF VDS=-20V, VGS=0V, f=1MHz 3
Source to Drain Diode Forward Voltage VSD 0.86 1.2 V VGS=0V, IS=-6.7A (Note 2) 4
Reverse Recovery Time trr 29 43 ns IF=-6.7A, di/dt=100A/µs 4
Reverse Recovery Charge Qrr 30 44 nC IF=-6.7A, di/dt=100A/µs 4
Thermal Resistance, Junction to Case RθJC 3 °C/W 2
Thermal Resistance, Junction to Ambient RθJA 40 °C/W Note 1a: 1 in² pad of 2 oz copper 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
contacts copper solder mounting surface of the drain pins. RθJC is guaranteed by design while RθJC is determined by the user’s board design. a. 40°C/W when mounted on a 1 in 2 pad of 2 oz copper 4

CAD (KiCad official)

  • Symbol: FDD4243
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: fdd4243-etched.step / fdd4243-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fdd4243.step / fdd4243.glb are the bare package body.

Provenance

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

  • Datasheet: UMW datasheet (10 pp, sha256 cea10567a07fd55f, retrieved 2026-10-20, 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