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MMBTA44_R1_00001

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

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Contents

README

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MMBTA44_R1_00001

PANJIT International · Bipolar (BJT) · SOT-23

MMBTA44_R1_00001 from PANJIT International, 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 NPN high-voltage transistor, shown as pin 1 in the SOT-23 top view.
2 Emitter passive Emitter terminal of the NPN high-voltage transistor, shown as pin 2 in the SOT-23 top view.
3 Collector passive Collector terminal of the NPN high-voltage transistor, shown as pin 3 in the SOT-23 top view.

Key specifications

Parameter Value
Manufacturer PANJIT International
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 Voltage VCEO 400 V 1
Collector - Base Voltage VCBO 500 V 1
Emitter - Base Voltage VEBO 6 V 1
Collector Current Continuous IC 300 mA 1
Max Power Dissipation PTOT 225 mW Transistor mounted on FR-5 board 1 x 0.75 x 0.062 in. (Note 1) 1
Thermal Resistance, Junction to Ambient RθJA 556 OC/W 1
Junction Temperature TJ -55 150 OC 1
Storage Temperature TSTG -55 150 OC 1
Collector - Emitter Breakdown Voltage V(BR)CEO 400 V IC=1mA, IB=0 2
Collector - Base Breakdown Voltage V(BR)CBO 500 V IC=100μA, IE=0 2
Emitter - Base Breakdown Voltage V(BR)EBO 6 V IE=10μA, IC=0 2
Collector Cut-off Current ICBO 0.1 μA VCB=400V, IE=0A 2
Emitter Cut-off Current IEBO 0.1 μA VEB=6V, IC=0 2
DC Current Gain hFE 40 VCE=10V, IC=1mA 2
DC Current Gain hFE 50 VCE=10V, IC=10mA 2
DC Current Gain hFE 45 VCE=10V, IC=50mA 2
Collector - Emitter Saturation Voltage VCE(SAT) 0.4 V IC=10mA, IB=1mA 2
Collector - Emitter Saturation Voltage VCE(SAT) 0.5 V IC=50mA, IB=5mA 2
Base - Emitter Saturation Voltage VBE(SAT) 0.75 V IC=10mA, IB=1mA 2
Collector Gain - Bandwidth Product FT 50 MHZ IC=10mA, VCE=20V, f=100MHZ 2

CAD (KiCad official)

  • Symbol: MMBTA44_R1_00001
  • Footprint: Package_TO_SOT_SMD:SOT-23
  • 3D model: SOT-23 (KiCad packages3D, STEP)
  • 3D model files: mmbta44-r1-00001-etched.step / mmbta44-r1-00001-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbta44-r1-00001.step / mmbta44-r1-00001.glb are the bare package body.

Provenance

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

  • Datasheet: PANJIT International datasheet (7 pp, sha256 bdd2c7b94965dfc6, retrieved 2026-10-28, 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