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Contents

README

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RS9N50D

REASUNOS · MOSFETs · TO-252

RS9N50D from REASUNOS, 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; drive with VGS up to ±30 V maximum, threshold 3 to 4 V at ID=250µA.
2 D passive Drain (middle lead and the exposed tab); VDSS 500 V, continuous drain current 9 A at TC=25℃, pulsed 32 A.
3 S passive Source; connected to the body diode anode, continuous source current 9 A.

Key specifications

Parameter Value
Manufacturer REASUNOS
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 VDSS 500 V 1
Continuous Drain Current ID 9 A TC=25℃ 1
Pulsed Drain Current IDM 32 A Note*1 1
Power Dissipation PD 63 W 1
Gate-to-Source Voltage VGS -30 30 V 1
Single Pulse Avalanche Energy EAS 180 mJ L = 10mH, VDD = 50V, RG = 25Ω 1
Maximum Temperature for Soldering Leads at 1.6mm from case for 10 seconds TL 300 ℃ 1
Maximum Temperature for Soldering Package Body for 10 seconds TPKG 260 ℃ 1
Operating Junction and Storage Temperature Range TJ and TSTG -55 150 ℃ 1
Junction-to-Case Thermal Resistance RθJC 1.98 ℃/W Drain lead soldered to water cooled heatsink, PD adjusted for a peak junction temperature of +150℃ 2
Junction-to-Ambient Thermal Resistance RθJA 62.5 ℃/W 1 cubic foot chamber, free air 2
Drain-to-Source Breakdown Voltage BVDSS 500 V VGS=0V, ID=250µA 2
Drain-to-Source Leakage Current IDSS 1 µA VDS=500V, VGS=0V 2
Gate-to-Source Forward Leakage Current IGSS 100 nA VGS=30V, VDS=0V 2
Gate-to-Source Reverse Leakage Current IGSS -100 nA VGS=-30V, VDS=0V 2
Static Drain-to-Source On-Resistance RDS(on) 0.68 0.85 Ω VGS=10V, ID=4A 2
Gate Threshold Voltage VGS(TH) 3 4 V VGS=VDS, ID=250µA 2
Continuous Source Current (integral pn-diode in MOSFET) IS 9 A 3
Maximum Pulsed Current ISM 32 A 3
Diode Forward Voltage VSD 1.4 V IS=4A, VGS=0V 3

CAD (KiCad official)

  • Symbol: RS9N50D
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252 (KiCad packages3D, STEP)
  • 3D model files: rs9n50d-etched.step / rs9n50d-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); rs9n50d.step / rs9n50d.glb are the bare package body.

Provenance

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

  • Datasheet: REASUNOS datasheet (9 pp, sha256 47707c7dd2360b96, retrieved 2026-10-19, tier: lcsc)
  • 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