component
MMBT5451DW
Public Made by Adomby adom
CBI Bipolar (BJT), SOT-363. 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
markdownMMBT5451DW
CBI · Bipolar (BJT) · SOT-363
MMBT5451DW from CBI, in a SOT-363. 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 | E1 | passive | Emitter of the PNP 5401 transistor (VEBO -5 V max, IC -0.2 A continuous). |
| 2 | B1 | input | Base of the PNP 5401 transistor (hFE 100 to 300 at VCE=-5V, IC=-10mA). |
| 3 | C2 | passive | Collector of the NPN 5551 transistor (VCEO 160 V, VCBO 180 V, IC 0.2 A continuous). |
| 4 | E2 | passive | Emitter of the NPN 5551 transistor (VEBO 6 V max). |
| 5 | B2 | input | Base of the NPN 5551 transistor (hFE 100 to 300 at VCE=5V, IC=10mA). |
| 6 | C1 | passive | Collector of the PNP 5401 transistor (VCEO -150 V, VCBO -160 V, IC -0.2 A continuous). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| Pins | 6 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| NPN 5551 Collector-base breakdown voltage | V(BR)CBO | 180 | V | IC=100A,IE=0 | 1 | ||
| NPN 5551 Collector-emitter breakdown voltage | V(BR)CEO | 160 | V | IC=1mA,IB=0 | 1 | ||
| NPN 5551 Emitter-base breakdown voltage | V(BR)EBO | 6 | V | IE=10A,IC=0 | 1 | ||
| NPN 5551 Collector cut-off current | ICBO | 0.05 | A | VCB=120V,IE=0 | 1 | ||
| NPN 5551 Emitter cut-off current | IEBO | 0.05 | A | VEB=4V,IC=0 | 1 | ||
| NPN 5551 DC current gain | hFE1 | 80 | VCE=5V,IC=1mA | 1 | |||
| NPN 5551 DC current gain | hFE2 | 100 | 300 | VCE=5V,IC=10mA | 1 | ||
| NPN 5551 DC current gain | hFE3 | 30 | VCE=5V,IC=50mA | 1 | |||
| NPN 5551 Collector-emitter saturation voltage | VCE(sat) | 0.15 | V | IC=10mA, IB=1mA | 1 | ||
| NPN 5551 Collector-emitter saturation voltage | VCE(sat) | 0.2 | V | IC=50mA, IB=5mA | 1 | ||
| NPN 5551 Base-emitter saturation voltage | VBE(sat) | 1 | V | IC=10mA, IB=1mA | 1 | ||
| NPN 5551 Output Capacitance | Cobo | 6 | pF | VCB = 10V, f = 1.0MHz, IE = 0 | 1 | ||
| NPN 5551 Current Gain-Bandwidth Product | fT | 100 | 300 | MHz | VCE = 10V, IC = 10mA, f = 100MHz | 1 | |
| NPN 5551 Noise Figure | NF | 8 | dB | VCE= 5.0V, IC = 200μA, RS = 1.0k, f = 1.0kHz | 1 | ||
| PNP 5401 Collector-base breakdown voltage | V(BR)CBO | -160 | V | IC=-100A,IE=0 | 2 | ||
| PNP 5401 Collector-emitter breakdown voltage | V(BR)CEO | -150 | V | IC=-1mA,IB=0 | 2 | ||
| PNP 5401 Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-10A,IC=0 | 2 | ||
| PNP 5401 Collector cut-off current | ICBO | -50 | nA | VCB=-120V,IE=0 | 2 | ||
| PNP 5401 Emitter cut-off current | IEBO | -50 | nA | VEB=-3V,IC=0 | 2 | ||
| PNP 5401 DC current gain | hFE1 | 50 | VCE=-5V,IC=-1mA | 2 | |||
| PNP 5401 DC current gain | hFE2 | 100 | 300 | VCE=-5V,IC=-10mA | 2 | ||
| PNP 5401 Collector-emitter saturation voltage | VCE(sat) | -0.2 | V | IC=-10mA, IB=-1mA | 2 | ||
| PNP 5401 Collector-emitter saturation voltage | VCE(sat) | -0.5 | V | IC=-50mA, IB=-5mA | 2 | ||
| PNP 5401 Base-emitter saturation voltage | VBE(sat) | -1 | V | IC=-10mA, IB=-1mA | 2 | ||
| PNP 5401 Output Capacitance | Cobo | 6 | pF | VCB =-10V, f = 1.0MHz, IE = 0 | 2 | ||
| PNP 5401 Current Gain-Bandwidth Product | fT | 100 | 300 | MHz | VCE =-10V, IC =-10mA, f = 100MHz | 2 | |
| PNP 5401 Noise Figure | NF | 8 | dB | VCE=-5.0V, IC =-200μA, RS = 10, f = 1.0kHz | 2 | ||
| NPN 5551 Collector-base voltage | VCBO | 180 | V | 1 | |||
| NPN 5551 Collector-emitter voltage | VCEO | 160 | V | 1 | |||
| NPN 5551 Emitter-base voltage | VEBO | 6 | V | 1 | |||
| NPN 5551 Collector current -Continuous | IC | 0.2 | A | 1 | |||
| NPN 5551 Collector power dissipation | PC | 0.2 | W | 1 | |||
| NPN 5551 Junction temperature | TJ | 150 | 1 | ||||
| NPN 5551 Storage temperature | Tstg | -55 | 150 | 1 | |||
| NPN 5551 Thermal resistance, junction to ambient | RθJA | 625 | /W | 1 | |||
| PNP 5401 Collector-base voltage | VCBO | -160 | V | 2 | |||
| PNP 5401 Collector-emitter voltage | VCEO | -150 | V | 2 | |||
| PNP 5401 Emitter-base voltage | VEBO | -5 | V | 2 | |||
| PNP 5401 Collector current -Continuous | IC | -0.2 | A | 2 | |||
| PNP 5401 Collector power dissipation | PC | 0.2 | W | 2 | |||
| PNP 5401 Junction temperature | TJ | 150 | 2 | ||||
| PNP 5401 Storage temperature | Tstg | -55 | 150 | 2 | |||
| PNP 5401 Thermal resistance, junction to ambient | RθJA | 625 | /W | 2 |
CAD (KiCad official)
- Symbol:
MMBT5451DW - Footprint:
Package_TO_SOT_SMD:SOT-363_SC-70-6 - 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files:
mmbt5451dw-etched.step/mmbt5451dw-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt5451dw.step/mmbt5451dw.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CBI datasheet (3 pp, sha256
3c20ef2731173f78, 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).