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FMMT489TA

Public Made by Adom

by adom

Diodes Incorporated Bipolar Transistors - BJT, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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FMMT489TA

Diodes Incorporated · Bipolar Transistors - BJT · SOT-23

FMMT489TA from Diodes Incorporated, 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 B input Base of the NPN transistor; drive current sets collector current, with VBE(on) max 1.0V at IC=1A and VEBO rating of 7V.
2 E passive Emitter of the NPN transistor; connects to the lower-potential side of the load current path.
3 C passive Collector of the NPN transistor; VCEO 30V, VCBO 50V, continuous IC 1A and peak ICM 4A.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
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
Collector-Base Breakdown Voltage BVCBO 50 V IC = 100 µA 4
Collector-Emitter Breakdown Voltage BVCEO 30 V IC = 10 mA 4
Emitter-Base Breakdown Voltage BVEBO 7 V IE = 100 µA 4
Collector-Base Cutoff Current ICBO 100 nA VCB = 30V 4
Emitter-Base Cutoff Current IEBO 100 nA VEB = 6V 4
Collector-Emitter Cutoff Current ICES 100 nA VCES= 30V 4
Static Forward Current Transfer Ratio hFE 100 300 IC = 1mA, VCE = 2V 4
Static Forward Current Transfer Ratio hFE 100 IC = 1A, VCE = 2V 4
Static Forward Current Transfer Ratio hFE 60 IC = 2A, VCE = 2V 4
Static Forward Current Transfer Ratio hFE 20 IC = 4A, VCE = 2V 4
Collector-Emitter Saturation Voltage VCE(sat) 300 mV IC = 1A, IB = 100mA 4
Collector-Emitter Saturation Voltage VCE(sat) 600 mV IC = 2A, IB = 200mA 4
Base-Emitter Turn-On Voltage VBE(on) 1 V IC = 1A, VCE = 2V 4
Base-Emitter Saturation Voltage VBE(sat) 1.1 V IC = 1A, IB = 100mA 4
Output Capacitance Cobo 10 pF VCB = 10V, f = 1MHz 4
Transition Frequency fT 150 MHz VCE = 10V, IC = 50mA, f = 100MHz 4
Collector-Base Voltage VCBO 50 V TA = +25°C 2
Collector-Emitter Voltage VCEO 30 V TA = +25°C 2
Emitter-Base Voltage VEBO 7 V TA = +25°C 2
Continuous Collector Current IC 1 A TA = +25°C 2
Peak Pulse Current ICM 4 A TA = +25°C 2
Base Current IB 200 mA TA = +25°C 2
Power Dissipation PD 500 mW TA = +25°C, Note 5 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Thermal Resistance, Junction to Ambient RθJA 250 °C/W Note 5 2
Thermal Resistance, Junction to Lead RθJL 197 °C/W Note 6 2

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
contacts tin  Terminals: Finish - Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 1

CAD (KiCad official)

  • Symbol: FMMT489TA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: fmmt489ta-etched.step / fmmt489ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fmmt489ta.step / fmmt489ta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 d9b90cd9fc9b1142, retrieved 2026-10-22, tier: manufacturer)
  • 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