component
MMBT6428LT1G
Public Made by Adomby adom
onsemi 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
markdownMMBT6428LT1G
onsemi · Bipolar (BJT) · SOT-23
MMBT6428LT1G from onsemi, 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 | passive | Base terminal of the NPN amplifier transistor; the datasheet gives no separate pin-level limit, and the device is rated for VCEO 45-50 Vdc, VCBO 55-60 Vdc, VEBO 6.0 Vdc and IC 200 mAdc maximum. |
| 2 | EMITTER | passive | Emitter terminal of the NPN amplifier transistor; the datasheet gives no separate pin-level limit, and the device is rated for VEBO 6.0 Vdc and IC 200 mAdc maximum. |
| 3 | COLLECTOR | passive | Collector terminal of the NPN amplifier transistor; the datasheet gives no separate pin-level limit, and the device is rated for VCEO 45-50 Vdc, VCBO 55-60 Vdc and IC 200 mAdc maximum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| 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 Breakdown Voltage | V(BR)CEO | 50 | Vdc | IC = 1.0 mAdc, IB = 0 (MMBT6428) | 2 | ||
| Collector-Base Breakdown Voltage | V(BR)CBO | 60 | Vdc | IC = 0.1 mAdc, IE = 0 (MMBT6428) | 2 | ||
| Collector Cutoff Current | ICES | 0.1 | Adc | VCE = 30 Vdc | 2 | ||
| Collector Cutoff Current | ICBO | 0.01 | Adc | VCB = 30 Vdc, IE = 0 | 2 | ||
| Emitter Cutoff Current | IEBO | 0.01 | Adc | VEB = 5.0 Vdc, IC = 0 | 2 | ||
| DC Current Gain | hFE | 250 | - | IC = 0.01 mAdc, VCE = 5.0 Vdc (MMBT6428) | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.2 | Vdc | IC = 10 mAdc, IB = 0.5 mAdc | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.6 | Vdc | IC = 100 mAdc, IB = 5.0 mAdc | 2 | ||
| Base-Emitter On Voltage | VBE(on) | 0.56 | 0.66 | Vdc | IC = 1.0 mAdc, VCE = 5.0 Vdc | 2 | |
| Current-Gain - Bandwidth Product | fT | 100 | 700 | MHz | IC = 1.0 mAdc, VCE = 5.0 Vdc, f = 100 MHz | 2 | |
| Output Capacitance | Cobo | 3 | pF | VCB = 10 Vdc, IE = 0, f = 1.0 MHz | 2 | ||
| Input Capacitance | Cibo | 8 | pF | VEB = 0.5 Vdc, IC = 0, f = 1.0 MHz | 2 | ||
| Collector-Emitter Voltage | VCEO | 50 | Vdc | MMBT6428 | 1 | ||
| Collector-Base Voltage | VCBO | 60 | Vdc | MMBT6428 | 1 | ||
| Emitter-Base Voltage | VEBO | 6 | Vdc | 1 | |||
| Collector Current - Continuous | IC | 200 | mAdc | 1 | |||
| Total Device Dissipation | PD | 225 | mW | FR-5 board, TA = 25°C | 1 | ||
| Total Device Dissipation | PD | 300 | mW | Alumina substrate, TA = 25°C | 1 | ||
| Derate above 25°C | PD | 1.8 | mW/°C | FR-5 board, above 25°C | 1 | ||
| Derate above 25°C | PD | 2.4 | mW/°C | Alumina substrate, above 25°C | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 556 | °C/W | FR-5 board | 1 | ||
| Thermal Resistance, Junction-to-Ambient | RθJA | 417 | °C/W | Alumina substrate | 1 | ||
| Junction and Storage Temperature | TJ, Tstg | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
MMBT6428LT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbt6428lt1g-etched.step/mmbt6428lt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbt6428lt1g.step/mmbt6428lt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (5 pp, sha256
e461d074b2e84418, retrieved 2026-10-17, 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).