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Contents

README

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FDC5661N-F085

onsemi · MOSFETs · TSOT-23-6

FDC5661N-F085 from onsemi, in a TSOT-23-6. 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 D passive Drain terminal; drain-to-source voltage VDSS is 60 V maximum and continuous drain current is 4.3 A at VGS = 10 V.
2 D passive Drain terminal; drain-to-source voltage VDSS is 60 V maximum and continuous drain current is 4.3 A at VGS = 10 V.
3 G input Gate terminal; gate-to-source voltage VGS is limited to ±20 V.
4 S passive Source terminal; source-to-drain diode forward voltage VSD is 1.25 V maximum at ISD = 4.3 A.
5 D passive Drain terminal; drain-to-source voltage VDSS is 60 V maximum and continuous drain current is 4.3 A at VGS = 10 V.
6 D passive Drain terminal; drain-to-source voltage VDSS is 60 V maximum and continuous drain current is 4.3 A at VGS = 10 V.

Key specifications

Parameter Value
Manufacturer onsemi
Package TSOT-23-6
Category Triode/MOS Tube/Transistor
Pins 6

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 60 V 1
Gate to Source Voltage VGS -20 20 V 1
Drain Current Continuous ID 4.3 A VGS = 10 V 1
Drain Current Pulsed ID 20 A Pulsed 1
Single Pulse Avalanche Energy EAS 81 mJ Note 1: L = 14 mH, IAS = 3.4 A, Starting TJ = 25°C 1
Power Dissipation PD 1.6 W 1
Operating and Storage Temperature TJ, TSTG -55 150 °C 1
Thermal Resistance Junction to Case RJC 30 °C/W 1
Thermal Resistance Junction to Ambient RJA 78 °C/W TO-263, 1in2 Copper Pad Area 1
Drain to Source Breakdown Voltage BVDSS 60 V ID = 250 A, VGS = 0 V 2
Zero Gate Voltage Drain Current IDSS 1 A VDS = 48 V, VGS = 0 V 2
Zero Gate Voltage Drain Current at TA = 150°C IDSS 250 A TA = 150°C 2
Gate to Source Leakage Current IGSS -100 100 nA VGS = ±20 V 2
Gate to Source Threshold Voltage VGS(th) 1 2 3 V VGS = VDS, ID = 250 A 2
Drain to Source On-Resistance RDS(on) 38 47 m VGS = 10 V, ID = 4.3 A 2
Drain to Source On-Resistance RDS(on) 46 60 m VGS = 4.5 V, ID = 4 A 2
Drain to Source On-Resistance at TJ = 150°C RDS(on) 69 86 m VGS = 10 V, ID = 4.3 A, TJ = 150°C 2
Total Gate Charge at 10 V Qg(TOT) 14.5 19 nC VGS = 0 to 10 V, VDD = 30 V, ID = 4.3 A 2
Turn-On Time ton 17.6 ns VGS = 10 V, VDD = 30 V, ID = 4.3 A, RGS = 6 2
Turn-Off Time toff 36 ns 2
Source to Drain Diode Voltage VSD 0.8 1.25 V ISD = 4.3 A 2
Source to Drain Diode Voltage VSD 0.8 1 V ISD = 2.1 A 2
Reverse Recovery Time trr 18.4 24 ns ISD = 4.3 A, dISD/dt = 100 A/s 2
Reverse Recovery Charge Qrr 10 13 nC 2
Input Capacitance Ciss 763 pF VGS = 0 V, VDS = 25 V, f = 1 MHz 2
Output Capacitance Coss 68 pF 2
Reverse Transfer Capacitance Crss 36 pF 2
Gate Resistance RG 2.6 f = 1 MHz 2
Gate to Source Gate Charge Qgs 2.4 nC VDD = 30 V, ID = 4.3 A 2
Gate to Drain Miller Charge Qgd 2.9 nC 2
Turn-On Delay Time td(on) 7.2 ns 2
Rise Time tr 1.6 ns 2
Turn-Off Delay Time td(off) 19.3 ns 2
Fall Time tf 3.1 ns 2

CAD (KiCad official)

  • Symbol: FDC5661N-F085
  • Footprint: Package_TO_SOT_SMD:TSOT-23-6
  • 3D model: TSOT-23-6 (KiCad packages3D, STEP)
  • 3D model files: fdc5661n-f085-etched.step / fdc5661n-f085-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fdc5661n-f085.step / fdc5661n-f085.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (7 pp, sha256 d286aae047053eb6, retrieved 2026-10-27, tier: manufacturer)
  • 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