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Contents

README

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MMBFJ113

onsemi · MOSFETs · SOT-23

MMBFJ113 from onsemi, 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 DRAIN passive Drain terminal; the datasheet states source and drain are interchangeable, and drain-gate voltage is limited to 35 V (VDG).
2 SOURCE passive Source terminal; the datasheet states source and drain are interchangeable, and gate-source voltage is rated −35 V (VGS).
3 GATE input Gate terminal; forward gate current is limited to 50 mA (IGF), and gate reverse current is 1.0 nA max at VGS = −15 V with VDS = 0.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOT-23
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−Gate Voltage VDG 35 V 1
Gate−Source Voltage VGS -35 V 1
Forward Gate Current IGF 50 mA 1
Operating and Storage Junction Temperature Range TJ, TSTG -55 150 °C 1
Total Device Dissipation PD 350 mW MMBFJ111/MMBFJ112/MMBFJ113 SOT-23, Note 4 1
Derate Above 25°C 2.8 mW/°C MMBFJ111/MMBFJ112/MMBFJ113 SOT-23, Note 4 1
Thermal Resistance, Junction−to−Ambient RθJA 357 °C/W MMBFJ111/MMBFJ112/MMBFJ113 SOT-23, Note 4 1
Gate−Source Breakdown Voltage V(BR)GSS -35 V IG = −1.0 A, VDS = 0 2
Gate Reverse Current IGSS -1 nA VGS = −15 V, VDS = 0 2
Gate−Source Cut−Off Voltage (113) VGS(off) -0.5 -3 V VDS = 5 V, ID = 1.0 A 2
Drain Cutoff Leakage Current ID(off) 1 nA VDS = 5.0 V, VGS = −10 V 2
Zero−Gate Voltage Drain Current (113) IDSS 2 mA VDS = 15 V, VGS = 0 2
Drain−Source On Resistance (113) rDS(on) 100 Ω VDS ≤ 0.1 V, VGS = 0 2
Drain−Gate & Source−Gate On Capacitance Cdg(on)/Csg(on) 28 pF VDS = 0, VGS = 0, f = 1.0 MHz 2
Drain−Gate Off Capacitance Cdg(off) 5 pF VDS = 0, VGS = −10 V, f = 1.0 MHz 2
Source−Gate Off Capacitance Csg(off) 5 pF VDS = 0, VGS = −10 V, f = 1.0 MHz 2

CAD (KiCad official)

  • Symbol: MMBFJ113
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbfj113-etched.step / mmbfj113-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbfj113.step / mmbfj113.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (11 pp, sha256 f62cadc2a2d4f52f, retrieved 2026-10-09, 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