component
MMBT3904K
Public Made by Adomby adom
Shikues 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
markdownMMBT3904K
Shikues · Bipolar (BJT) · SOT-23
MMBT3904K from Shikues, 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 of the NPN transistor; emitter-base voltage limited to 6 V (VEBO). |
| 2 | EMITTER | passive | Emitter of the NPN transistor. |
| 3 | COLLECTOR | passive | Collector of the NPN transistor; collector-emitter voltage limited to 40 V (VCEO) and collector-base voltage to 60 V (VCBO). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shikues |
| 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 | 60 | V | 1 | |||
| Collector-Emitter Voltage | VCEO | 40 | V | 1 | |||
| Emitter-Base Voltage | VEBO | 6 | V | 1 | |||
| Collector Power Dissipation | PC | 200 | mW | TA=25℃ | 1 | ||
| Junction Temperature | Tj | 150 | ℃ | 1 | |||
| Storage Temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Thermal resistance junction to ambient | RθJA | 625 | ℃/W | 1 | |||
| Collector-base breakdown voltage | V(BR)CBO | 60 | V | IC=10uA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | 40 | V | IC=1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | 6 | V | IE=10uA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | 0.1 | µA | VCB=60V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | 0.1 | µA | VEB=5V, IC=0 | 1 | ||
| DC current gain | hFE | 100 | 300 | VCE=1V, Ic=10mA | 1 | ||
| DC current gain | hFE | 60 | VCE=1V, Ic=50mA | 1 | |||
| DC current gain | hFE | 30 | VCE=1V, Ic=100mA | 1 | |||
| Collector-emitter saturation voltage | VCE(sat) | 0.3 | V | IC=50mA, IB=5 mA | 1 | ||
| Base-emitter saturation voltage | VBE(sat) | 0.95 | V | IC=50mA, IB=5 mA | 1 | ||
| Collector output capacitance | Cob | 4 | pF | VCB=5V IE=0 f=1MHZ | 1 | ||
| Input capacitance | Cib | 8 | pF | VCB=0.5V IC=0 f=1MHZ | 1 | ||
| Transition frequency | fT | 300 | MHz | VCE=20V, IC=10mA, f=100MHZ | 1 |
CAD (KiCad official)
- Symbol:
MMBT3904K - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbt3904k-etched.step/mmbt3904k-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt3904k.step/mmbt3904k.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shikues datasheet (4 pp, sha256
753bdafe5bff5e95, retrieved 2026-10-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-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).