component
MMBTSC945H
Public Made by Adomby adom
PJSEMI 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
markdownMMBTSC945H
PJSEMI · Bipolar (BJT) · SOT-23
MMBTSC945H from PJSEMI, 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 terminal of the NPN transistor; the datasheet gives VCBO 60 V and VEBO 5 V maximum ratings and VBE(sat) of 1 V max at IC = 100 mA, IB = 10 mA. |
| 2 | Emitter | passive | Emitter terminal of the NPN transistor; the datasheet gives VEBO 5 V maximum and emitter-base breakdown V(BR)EBO of 5 V minimum at IE = 100 µA. |
| 3 | Collector | passive | Collector terminal of the NPN transistor; the datasheet gives VCEO 50 V, VCBO 60 V and a maximum collector current IC of 150 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | PJSEMI |
| 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 |
|---|---|---|---|---|---|---|---|
| DC Current Gain (Current Gain Group H) | HFE | 200 | 400 | - | VCE = 6 V, IC = 1 mA | 1 | |
| Transition Frequency | fT | 150 | MHz | VCE = 6 V, IC = 10 mA, f = 30 MHz | 1 | ||
| Collector Base Breakdown Voltage | V(BR)CBO | 60 | V | IC = 100 μA | 1 | ||
| Collector Emitter Breakdown Voltage | V(BR)CEO | 50 | V | IC = 1 mA | 1 | ||
| Emitter Base Breakdown Voltage | V(BR)EBO | 5 | V | IE = 100 μA | 1 | ||
| Collector Base Cutoff Current | ICBO | 100 | nA | VCB = 60 V | 1 | ||
| Emitter Base Cutoff Current | IEBO | 100 | nA | VEB = 5 V | 1 | ||
| Collector Emitter Saturation Voltage | VCE(sat) | 0.3 | V | IC = 100 mA, IB = 10 mA | 1 | ||
| Base Emitter Saturation Voltage | VBE(sat) | 1 | V | IC = 100 mA, IB = 10 mA | 1 | ||
| Collector Output Capacitance | Cob | 3 | pF | VCB = 10 V, f = 1 MHz | 1 | ||
| Collector Base Voltage | VCBO | 60 | V | 1 | |||
| Collector Emitter Voltage | VCEO | 50 | V | 1 | |||
| Emitter Base Voltage | VEBO | 5 | V | 1 | |||
| Collector Current | IC | 150 | mA | 1 | |||
| Power Dissipation | PD | 200 | mW | 1 | |||
| Junction Temperature | TJ | 150 | ℃ | 1 | |||
| Storage Temperature Range | TSTG | -55 | 150 | ℃ | 1 |
CAD (KiCad official)
- Symbol:
MMBTSC945H - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbtsc945h-etched.step/mmbtsc945h-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbtsc945h.step/mmbtsc945h.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: PJSEMI datasheet (3 pp, sha256
150f4d35e2fcbee2, retrieved 2026-10-18, 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).