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PM509BA

Public Made by Adom

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NIKO Semicon MOSFETs, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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PM509BA

NIKO Semicon · MOSFETs · SOT-23

PM509BA from NIKO Semicon, in a SOT-23. 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 P-channel FET, with VGS rated ±20 V and a threshold of -1 to -3 V.
2 S passive Source; the continuous source-drain diode current is rated at -2 A.
3 D passive Drain; VDS is rated at -30 V and continuous drain current at -2 A at TA = 25 °C.

Key specifications

Parameter Value
Manufacturer NIKO Semicon
Package SOT-23
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 Breakdown Voltage V(BR)DSS -30 V VGS = 0V, ID = -250A 1
Gate Threshold Voltage VGS(th) -1 -1.7 -3 V VDS = VGS, ID = -250A 1
Gate-Body Leakage IGSS 100 nA VDS = 0V, VGS = ±20V 1
Zero Gate Voltage Drain Current IDSS -1 A VDS = -24V, VGS = 0V 1
Zero Gate Voltage Drain Current (55 °C) IDSS -10 A VDS = -20V, VGS = 0V, TJ = 55 °C 1
On-State Drain Current ID(ON) -8 A VDS = -10V, VGS = -10V 1
Drain-Source On-State Resistance RDS(ON) 134 180 mΩ VGS = -4.5V, ID = -1.5A 1
Drain-Source On-State Resistance RDS(ON) 98 120 mΩ VGS =-10V, ID = -2A 1
Continuous Source Current IS -2 A 2
Forward Voltage VSD -1.1 V IF = -2A, VGS = 0V 2
Drain-Source Voltage VDS -30 V TA = 25 °C 1
Gate-Source Voltage VGS -20 20 V TA = 25 °C 1
Continuous Drain Current ID -2 A TA = 25 °C 1
Continuous Drain Current ID -1.5 A TA = 70 °C 1
Pulsed Drain Current IDM -8 A Pulse width limited by maximum junction temperature 1
Power Dissipation PD 0.7 W TA = 25 °C 1
Power Dissipation PD 0.4 W TA = 70 °C 1
Operating Junction & Storage Temperature Range Tj, Tstg -55 150 °C 1
Junction-to-Ambient Thermal Resistance RθJA 177 °C/W Mounted on 1in2 FR-4 board with 2oz. Copper 1
Forward Transconductance gfs 4.3 S VDS = -5V, ID = -2A 2
Input Capacitance Ciss 190 pF VGS = 0V, VDS = -15V, f = 1MHz 2
Output Capacitance Coss 36 pF VGS = 0V, VDS = -15V, f = 1MHz 2
Reverse Transfer Capacitance Crss 27 pF VGS = 0V, VDS = -15V, f = 1MHz 2
Total Gate Charge Qg 4.8 nC VDS = -15V , VGS =-10V, ID = -2A 2
Gate-Source Charge Qgs 0.5 nC VDS = -15V , VGS =-10V, ID = -2A 2
Gate-Drain Charge Qgd 1.3 nC VDS = -15V , VGS =-10V, ID = -2A 2
Turn-On Delay Time td(on) 14 nS VDD = -15V, VGS = -10V, RG = 6Ω 2
Rise Time tr 36 nS VDD = -15V, VGS = -10V, RG = 6Ω 2
Turn-Off Delay Time td(off) 42 nS VDD = -15V, VGS = -10V, RG = 6Ω 2
Fall Time tf 34 nS VDD = -15V, VGS = -10V, RG = 6Ω 2
Reverse Recovery Time trr 15 nS IF = -2A, dIF/dt = 100A/S 2
Reverse Recovery Charge Qrr 8 nC IF = -2A, dIF/dt = 100A/S 2

CAD (KiCad official)

  • Symbol: PM509BA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: pm509ba-etched.step / pm509ba-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); pm509ba.step / pm509ba.glb are the bare package body.

Provenance

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

  • Datasheet: NIKO Semicon datasheet (4 pp, sha256 943df99db739f7ba, retrieved 2026-10-22, 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