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FDP18N50

Public Made by Adom

by adom

onsemi MOSFETs, TO-220. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FDP18N50

onsemi · MOSFETs · TO-220

FDP18N50 from onsemi, 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 G input Gate; controls the channel, with VGS rated at ±30 V maximum and RDS(on) of 0.265 Ω max at VGS = 10 V.
2 D passive Drain; rated for 500 V drain-source voltage and 18 A continuous current at TC = 25°C (72 A pulsed).
3 S passive Source; the body diode runs from source to drain, with 18 A continuous forward current and VSD of 1.4 V max at IS = 18 A.

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-220
Category Transistors
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-Source Voltage VDSS 500 V 1
Drain Current Continuous ID 18 A TC = 25°C 1
Drain Current Continuous ID 10.8 A TC = 100°C 1
Drain Current Pulsed IDM 72 A Note 1 1
Gate-Source Voltage VGSS -30 30 V 1
Single Pulsed Avalanche Energy EAS 945 mJ Note 2 1
Avalanche Current IAR 18 A Note 1 1
Repetitive Avalanche Energy EAR 23 mJ Note 1 1
Peak Diode Recovery dv/dt dv/dt 4.5 V/ns Note 3 1
Power Dissipation PD 235 W TC = 25°C 1
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 1
Maximum Lead Temperature for Soldering TL 300 °C 1/8" from Case for 5 Seconds 1
Thermal Resistance, Junction-to-Case RθJC 0.53 °C/W 1
Thermal Resistance, Case-to-Sink RθCS 0.5 °C/W Typ. 1
Thermal Resistance, Junction-to-Ambient RθJA 62.5 °C/W 1
Drain-Source Breakdown Voltage BVDSS 500 V VGS = 0V, ID = 250µA 2
Breakdown Voltage Temperature Coefficient ∆BVDSS/∆TJ 0.5 V/°C ID = 250µA, Referenced to 25°C 2
Zero Gate Voltage Drain Current IDSS 1 µA VDS = 500V, VGS = 0V 2
Zero Gate Voltage Drain Current IDSS 10 µA VDS = 400V, TC = 125°C 2
Gate-Body Leakage Current, Forward IGSSF 100 nA VGS = 30V, VDS = 0V 2
Gate-Body Leakage Current, Reverse IGSSR -100 nA VGS = -30V, VDS = 0V 2
Gate Threshold Voltage VGS(th) 3 5 V VDS = VGS, ID = 250µA 2
Static Drain-Source On-Resistance RDS(on) 0.22 0.265 Ω VGS = 10V, ID = 9A 2
Input Capacitance Ciss 2200 2860 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Output Capacitance Coss 330 430 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Reverse Transfer Capacitance Crss 25 40 pF VDS = 25V, VGS = 0V, f = 1.0MHz 2
Turn-On Delay Time td(on) 55 120 ns VDD = 250V, ID = 18A, RG = 25Ω 2
Turn-On Rise Time tr 165 340 ns VDD = 250V, ID = 18A, RG = 25Ω 2
Turn-Off Delay Time td(off) 95 200 ns VDD = 250V, ID = 18A, RG = 25Ω 2
Turn-Off Fall Time tf 90 190 ns VDD = 250V, ID = 18A, RG = 25Ω 2
Total Gate Charge Qg 45 60 nC VDS = 400V, ID = 18A, VGS = 10V 2
Maximum Continuous Drain-Source Diode Forward Current IS 18 A 2
Maximum Pulsed Drain-Source Diode Forward Current ISM 72 A 2
Drain-Source Diode Forward Voltage VSD 1.4 V VGS = 0V, IS = 18A 2
Forward Transconductance gFS 25 S VDS = 40V, ID = 9A (Note 4) 2
Gate-Source Charge Qgs 12.5 nC VDS = 400V, ID = 18A, VGS = 10V 2
Gate-Drain Charge Qgd 19 nC VDS = 400V, ID = 18A, VGS = 10V 2
Reverse Recovery Time trr 500 ns VGS = 0V, IS = 18A, dIF/dt =100A/µs 2
Reverse Recovery Charge Qrr 5.4 µC VGS = 0V, IS = 18A, dIF/dt =100A/µs 2

CAD (KiCad official)

  • Symbol: FDP18N50
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220 (KiCad packages3D, STEP)
  • 3D model files: fdp18n50-etched.step / fdp18n50-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fdp18n50.step / fdp18n50.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (10 pp, sha256 0d0fcfa6830ddb1b, retrieved 2026-10-22, 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