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MMST2222A-7-F

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Diodes Incorporated Bipolar (BJT), SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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MMST2222A-7-F

Diodes Incorporated · Bipolar (BJT) · SOT-323

MMST2222A-7-F from Diodes Incorporated, in a SOT-323. 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's top-view pin-out shows it at the bottom-left lead.
2 E passive Emitter of the NPN transistor; the datasheet's top-view pin-out shows it at the bottom-right lead, and VEBO is rated at 6 V.
3 C passive Collector of the NPN transistor; the datasheet's top-view pin-out shows it as the single lead at the top, rated for IC = 600 mA, VCEO = 40 V and VCBO = 75 V.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-323
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 75 V 2
Collector-Emitter Voltage VCEO 40 V 2
Emitter-Base Voltage VEBO 6 V 2
Collector Current IC 600 mA 2
ESD Human Body Model ESD HBM 4000 V JEDEC Class 3A (JESD22-A114) 2
ESD Machine Model ESD MM 400 V JEDEC Class C (JESD22-A115) 2
Power Dissipation PD 200 mW Note 5: collector lead on minimum pad layout, 1oz copper, single-sided 1.6mm FR-4, still air, steady state 2
Thermal Resistance, Junction to Ambient RJA 625 °C/W Note 5: same mounting as PD 2
Operating and Storage Temperature Range TJ, TSTG -55 150 °C 2
Collector-Base Breakdown Voltage BVCBO 75 V IC = 10µA, IE = 0 2
Collector-Emitter Breakdown Voltage BVCEO 40 V IC = 10mA, IB = 0 2
Emitter-Base Breakdown Voltage BVEBO 6 V IE = 10µA, IC = 0 2
Collector Cut-Off Current ICBO 10 nA VCB = 60V, IE = 0 2
Collector Cut-Off Current ICBO 10 µA VCB = 60V, IE = 0, TA = +150°C 2
Base Cutoff Current IBL 20 nA VCE = 60V, VEB(OFF) = 3V 2
DC Current Gain hFE 35 IC = 100µA, VCE = 10V 2
DC Current Gain hFE 50 IC = 1.0mA, VCE = 10V 2
DC Current Gain hFE 75 IC = 10mA, VCE = 10V 2
DC Current Gain hFE 100 IC = 150mA, VCE = 10V 2
DC Current Gain hFE 40 IC = 500mA, VCE = 10V 2
Collector-Emitter Saturation Voltage VCE(SAT) 0.3 V IC = 150mA, IB = 15mA 2
Collector-Emitter Saturation Voltage VCE(SAT) 1 V IC = 500mA, IB = 50mA 2
Base-Emitter Saturation Voltage VBE(SAT) 0.6 V IC = 150mA, IB = 15mA 2
Base-Emitter Saturation Voltage VBE(SAT) 1.2 V IC = 150mA, IB = 15mA 2
Base-Emitter Saturation Voltage VBE(SAT) 2 V IC = 500mA, IB = 50mA 2
Output Capacitance Cobo 8 pF VCB = 10V, f = 1.0MHz, IE = 0 2
Input Capacitance Cibo 25 pF VEB = 0.5V, f = 1.0MHz, IC = 0 2
Current Gain-Bandwidth Product fT 300 MHz VCE = 20V, IC = 20 A (as printed), f = 1.0MHz 2
Noise Figure NF 4 dB VCE = 10V, IC = 100A (as printed), RS = 1kΩ, f = 1.0kHz 2
Delay Time td 10 ns VCC = 30V, IC = 150mA, VBE(OFF) = -0.5V, IB1 = 15mA 2
Rise Time tr 25 ns VCC = 30V, IC = 150mA, VBE(OFF) = -0.5V, IB1 = 15mA 2
Storage Time ts 225 ns VCC = 30V, IC = 150mA, IB1 = IB2 = 15mA 2
Fall Time tf 60 ns VCC = 30V, IC = 150mA, IB1 = IB2 = 15mA 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: MMST2222A-7-F
  • Footprint: Package_TO_SOT_SMD:SOT-323_SC-70
  • 3D model: SOT-323 (KiCad packages3D, STEP)
  • 3D model files: mmst2222a-7-f-etched.step / mmst2222a-7-f-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmst2222a-7-f.step / mmst2222a-7-f.glb are the bare package body.

Provenance

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

  • Datasheet: Diodes Incorporated datasheet (6 pp, sha256 7c8edba5789a1afc, retrieved 2026-10-16, 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