component
MMBT5401T
Public Made by Adomby adom
CBI Bipolar (BJT), SOT-523. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownMMBT5401T
CBI · Bipolar (BJT) · SOT-523
MMBT5401T from CBI, in a SOT-523. 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 PNP transistor; the datasheet gives no pin-specific limit, only device maximum ratings such as VEBO -5 V and IC -600 mA. |
| 2 | EMITTER | passive | Emitter terminal of the PNP transistor; the datasheet gives no pin-specific limit, only device maximum ratings such as VEBO -5 V and VCEO -150 V. |
| 3 | COLLECTOR | passive | Collector terminal of the PNP transistor; the datasheet gives no pin-specific limit, with maximum VCBO -160 V, VCEO -150 V and IC -600 mA for the device. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| Package | SOT-523 |
| 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 | -160 | V | 1 | |||
| Collector-emitter voltage | VCEO | -150 | V | 1 | |||
| Emitter-base voltage | VEBO | -5 | V | 1 | |||
| Collector current | IC | -600 | mA | 1 | |||
| Collector power dissipation | PC | 200 | mW | 1 | |||
| Junction temperature | Tj | 150 | ℃ | 1 | |||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Collector-base breakdown voltage | V(BR)CBO | -160 | V | IC=-100µA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | -150 | V | IC=-1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-10µA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | -50 | nA | VCB=-120V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | -50 | nA | VEB=-3V, IC=0 | 1 | ||
| DC current gain | hFE | 60 | 300 | VCE=-5V, IC=-10mA | 1 | ||
| DC current gain | hFE | 50 | VCE=-5V, IC=-1mA | 1 | |||
| Collector-emitter saturation voltage | VCE(sat) | -0.5 | V | IC=-50mA, IB=-5mA | 1 | ||
| Collector-emitter saturation voltage | VCE(sat) | -0.2 | V | IC=-10mA, IB=-1mA | 1 | ||
| Base-emitter saturation voltage | VBE(sat) | -1 | V | IC=-50mA, IB=-5mA | 1 | ||
| Transition frequency | fT | 100 | MHz | VCE=-10V, IC=-10mA, f=100MHz | 1 | ||
| Collector output capacitance | Cob | 6 | pF | VCB=-10V, IE=0, f=1MHz | 1 | ||
| Thermal resistance, junction to ambient | RθJA | 625 | ℃/W | 1 |
CAD (KiCad official)
- Symbol:
MMBT5401T - Footprint:
Package_TO_SOT_SMD:SOT-523 - 3D model: SOT-523, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
mmbt5401t-etched.step/mmbt5401t-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt5401t.step/mmbt5401t.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CBI datasheet (3 pp, sha256
7a64a3b144b492ad, retrieved 2026-10-09, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).