component
MMBT4401-AU_R1_000A1
Public Made by Adomby adom
PANJIT International Bipolar (BJT), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownMMBT4401-AU_R1_000A1
PANJIT International · Bipolar (BJT) · SOT-23
MMBT4401-AU_R1_000A1 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 | B | input | Base of the NPN transistor; emitter-base breakdown voltage VEBO is 6 V and base cutoff current is 50 nA max at VCE=35 V, VEB=0.4 V. |
| 2 | E | passive | Emitter of the NPN transistor; VEBO is 6 V maximum relative to base. |
| 3 | C | passive | Collector of the NPN transistor; VCEO is 40 V, VCBO is 60 V and continuous collector current is 600 mA. |
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 |
|---|---|---|---|---|---|---|---|
| Emitter-Base Breakdown Voltage | V(BR)EBO | 6 | V | IE=100µA, IC=0 | 2 | ||
| Base Cutoff Current | IBL | 100 | nA | VCE=35V, VBE=-0.4V | 2 | ||
| Collector Cutoff Current | ICEX | 100 | nA | VCE=35V, VBE=-0.4V | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 0.4 | V | IC=150mA, IB=15mA | 2 | ||
| Collector-Emitter Voltage | VCEO | 40 | V | 1 | |||
| Collector-Base Voltage | VCBO | 60 | V | 1 | |||
| Emitter-Base Voltage | VEBO | 6 | V | 1 | |||
| Collector Current - Continuous | IC | 600 | mA | 1 | |||
| Max. Power Dissipation | PTOT | 225 | mW | Note 1: transistor mounted on FR-5 board 1.0 x 0.75 x 0.062 in. | 1 | ||
| Thermal Resistance, Junction to Ambient | RθJA | 556 | OC/W | 1 | |||
| Junction Temperature Range | TJ | -55 | 150 | OC | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | OC | 1 |
CAD (KiCad official)
- Symbol:
MMBT4401-AU_R1_000A1 - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbt4401-au-r1-000a1-etched.step/mmbt4401-au-r1-000a1-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt4401-au-r1-000a1.step/mmbt4401-au-r1-000a1.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PANJIT International datasheet (5 pp, sha256
3ece364dcc119f26, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).