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FMMT618TA

Public Made by Adom

by adom

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

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FMMT618TA

Diodes Incorporated · Bipolar (BJT) · SOT-23

FMMT618TA 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; the datasheet gives IB maximum 500mA and VEBO 7V.
2 E passive Emitter of the NPN transistor; the datasheet gives VEBO 7V maximum.
3 C passive Collector of the NPN transistor; the datasheet gives VCEO 20V, VCBO 20V, IC 2.5A continuous and ICM 6A peak.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
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-Base Voltage VCBO 20 V @TA = +25°C 2
Collector-Emitter Voltage VCEO 20 V @TA = +25°C 2
Emitter-Base Voltage VEBO 7 V @TA = +25°C 2
Continuous Collector Current IC 2.5 A @TA = +25°C 2
Peak Pulse Current ICM 6 A @TA = +25°C 2
Base Current IB 500 mA @TA = +25°C 2
Power Dissipation (Note 6) PD 625 mW Note 6: 25mm X 25mm FR4 PCB, single sided 1 oz copper, still air, steady state 2
Power Dissipation (Note 7) PD 806 mW Note 7: same as Note 6, t ≤ 5 sec 2
Thermal Resistance, Junction to Ambient (Note 6) RθJA 200 °C/W Note 6: 25mm X 25mm FR4 PCB, single sided 1 oz copper, still air, steady state 2
Thermal Resistance, Junction to Ambient (Note 7) RθJA 155 °C/W Note 7: same as Note 6, t ≤ 5 sec 2
Thermal Resistance, Junction to Leads (Note 8) RθJL 194 °C/W Note 8: thermal resistance from junction to solder-point (at end of collector lead) 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Collector-Base Breakdown Voltage BVCBO 20 100 V IC = 100µA 4
Collector-Emitter Breakdown Voltage BVCEO 20 27 V IC = 10mA (Note 9) 4
Emitter-Base Breakdown Voltage BVEBO 7 8.3 V IE = 100µA 4
Collector Cut-off Current ICBO 100 nA VCB = 20V 4
Emitter Cut-off Current IEBO 100 nA VEB = 4V 4
Collector Emitter Cut-off Current ICES 100 nA VCES = 20V 4
Static Forward Current Transfer Ratio (Note 9) hFE 200 IC = 10mA, VCE = 2V 4
Static Forward Current Transfer Ratio (Note 9) hFE 300 IC = 200mA, VCE = 2V 4
Static Forward Current Transfer Ratio (Note 9) hFE 100 IC = 6A, VCE = 2V 4
Collector-Emitter Saturation Voltage (Note 9) VCE(sat) 8 15 mV IC = 0.1A, IB = 10mA 4
Collector-Emitter Saturation Voltage (Note 9) VCE(sat) 70 150 mV IC = 1A, IB = 10mA 4
Collector-Emitter Saturation Voltage (Note 9) VCE(sat) 130 200 mV IC = 2.5A, IB = 50mA 4
Base-Emitter Saturation Voltage (Note 9) VBE(sat) 0.89 1 V IC = 2.5A, IB = 50mA 4
Base-Emitter Saturation Voltage (Note 9) VBE(on) 0.83 1 V IC = 2.5A, VCE = 2V 4
Transition Frequency fT 100 140 MHz IC = 50mA, VCE = 10V, f = 100MHz 4
Collector Output Capacitance Cobo 23 30 pF VCB = 10V, f = 1MHz 4

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: FMMT618TA
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: fmmt618ta-etched.step / fmmt618ta-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); fmmt618ta.step / fmmt618ta.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (7 pp, sha256 0b5fb773aa06468d, retrieved 2026-10-18, 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