component

MMBT4403LT3G

Public Made by Adom

by adom

onsemi Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMBT4403LT3G

onsemi · Bipolar (BJT) · SOT-23

MMBT4403LT3G 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 BASE input Base terminal of the PNP switching transistor; the emitter-base voltage is limited to VEBO = -5.0 Vdc.
2 EMITTER passive Emitter terminal of the PNP switching transistor; the emitter-base voltage is limited to VEBO = -5.0 Vdc.
3 COLLECTOR passive Collector terminal of the PNP switching transistor; limited to VCEO = -40 Vdc and continuous collector current IC = -600 mAdc (peak ICM = -900 mAdc).

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
Collector-Emitter Breakdown Voltage V(BR)CEO -40 Vdc IC = −1.0 mAdc, IB = 0 2
Collector-Base Breakdown Voltage V(BR)CBO -40 Vdc IC = −0.1 mAdc, IE = 0 2
Emitter-Base Breakdown Voltage V(BR)EBO -5 Vdc IE = −0.1 mAdc, IC = 0 2
Base Cutoff Current IBEV -0.1 Adc VCE = −35 Vdc, VEB = −0.4 Vdc 2
Collector Cutoff Current ICEX -0.1 Adc VCE = −35 Vdc, VEB = −0.4 Vdc 2
DC Current Gain hFE 30 IC = −0.1 mAdc, VCE = −1.0 Vdc 2
DC Current Gain hFE 60 IC = −1.0 mAdc, VCE = −1.0 Vdc 2
DC Current Gain hFE 100 IC = −10 mAdc, VCE = −1.0 Vdc 2
DC Current Gain hFE 100 300 IC = −150 mAdc, VCE = −2.0 Vdc (Note 3) 2
DC Current Gain hFE 20 IC = −500 mAdc, VCE = −2.0 Vdc (Note 3) 2
Collector-Emitter Saturation Voltage VCE(sat) -0.4 Vdc IC = −150 mAdc, IB = −15 mAdc 2
Collector-Emitter Saturation Voltage VCE(sat) -0.75 Vdc IC = −500 mAdc, IB = −50 mAdc 2
Base-Emitter Saturation Voltage VBE(sat) -0.75 -0.95 Vdc IC = −150 mAdc, IB = −15 mAdc 2
Base-Emitter Saturation Voltage VBE(sat) -1.3 Vdc IC = −500 mAdc, IB = −50 mAdc 2
Current-Gain-Bandwidth Product fT 200 MHz IC = −20 mAdc, VCE = −10 Vdc, f = 100 MHz 2
Collector-Base Capacitance Ccb 8.5 pF VCB = −10 Vdc, IE = 0, f = 1.0 MHz 2
Emitter-Base Capacitance Ceb 30 pF VBE = −0.5 Vdc, IC = 0, f = 1.0 MHz 2
Input Impedance hie 1.5 15 k IC = −1.0 mAdc, VCE = −10 Vdc, f = 1.0 kHz 2
Voltage Feedback Ratio hre 0.1 8 X 10−4 IC = −1.0 mAdc, VCE = −10 Vdc, f = 1.0 kHz 2
Small-Signal Current Gain hfe 60 500 IC = −1.0 mAdc, VCE = −10 Vdc, f = 1.0 kHz 2
Output Admittance hoe 1 100 Mhos IC = −1.0 mAdc, VCE = −10 Vdc, f = 1.0 kHz 2
Delay Time td 15 ns VCC = −30 Vdc, VEB = −2.0 Vdc, IC = −150 mAdc, IB1 = −15 mAdc 2
Rise Time tr 20 ns 2
Storage Time ts 225 ns VCC = −30 Vdc, IC = −150 mAdc, IB1 = IB2 = −15 mAdc 2
Fall Time tf 30 ns 2
Collector-Emitter Voltage VCEO -40 Vdc 1
Collector-Base Voltage VCBO -40 Vdc 1
Emitter-Base Voltage VEBO -5 Vdc 1
Collector Current - Continuous IC -600 mAdc 1
Collector Current - Peak ICM -900 mAdc 1
Junction and Storage Temperature TJ, Tstg -55 150 °C 1
Total Device Dissipation FR-5 Board PD 225 mW FR-5 Board (Note 1) @ TA = 25°C 1
Thermal Resistance, Junction-to-Ambient (FR-5 Board) RJA 556 °C/W FR-5 Board (Note 1) 1
Total Device Dissipation Alumina Substrate PD 300 mW Alumina Substrate (Note 2) @ TA = 25°C 1
Thermal Resistance, Junction-to-Ambient (Alumina Substrate) RJA 417 °C/W Alumina Substrate (Note 2) 1

CAD (KiCad official)

  • Symbol: MMBT4403LT3G
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbt4403lt3g-etched.step / mmbt4403lt3g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbt4403lt3g.step / mmbt4403lt3g.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (8 pp, sha256 fd0bf171bfe8871e, retrieved 2026-10-17, 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