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CMUT2907A TR PBFREE
Public Made by Adomby adom
Central Semicon Bipolar (BJT), SOT-523. 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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Contents
README
markdownCMUT2907A TR PBFREE
Central Semicon · Bipolar (BJT) · SOT-523
CMUT2907A TR PBFREE from Central Semicon, 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 lead of the PNP transistor, with VBE(SAT) of 1.3 V at IC=150 mA, IB=15 mA and 2.6 V at IC=500 mA, IB=50 mA. |
| 2 | Emitter | passive | Emitter lead of the PNP transistor, with an emitter-base breakdown BVEBO of 5.0 V minimum at IE=10 µA and a maximum VEBO rating of 5.0 V. |
| 3 | Collector | passive | Collector lead of the PNP transistor, rated for 60 V VCBO and VCEO, 600 mA continuous collector current and 250 mW power dissipation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Central Semicon |
| 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 | 60 | V | TA=25°C | 1 | ||
| Collector-Emitter Voltage | VCEO | 60 | V | TA=25°C | 1 | ||
| Emitter-Base Voltage | VEBO | 5 | V | TA=25°C | 1 | ||
| Continuous Collector Current | IC | 600 | mA | TA=25°C | 1 | ||
| Power Dissipation | PD | 250 | mW | TA=25°C | 1 | ||
| Operating and Storage Junction Temperature | TJ, Tstg | -65 | 150 | °C | TA=25°C | 1 | |
| Collector cutoff current | ICBO | 10 | nA | VCB=50V | 1 | ||
| Collector cutoff current | ICBO | 10 | µA | VCB=50V, TA=125°C | 1 | ||
| Collector cutoff current (VBE reverse) | ICEV | 50 | nA | VCE=30V, VBE=0.5V | 1 | ||
| Collector-Base Breakdown Voltage | BVCBO | 60 | V | IC=10µA | 1 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | 60 | V | IC=10mA | 1 | ||
| Emitter-Base Breakdown Voltage | BVEBO | 5 | V | IE=10µA | 1 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 0.4 | V | IC=150mA, IB=15mA | 1 | ||
| Collector-Emitter Saturation Voltage | VCE(SAT) | 1.6 | V | IC=500mA, IB=50mA | 1 | ||
| Base-Emitter Saturation Voltage | VBE(SAT) | 1.3 | V | IC=150mA, IB=15mA | 1 | ||
| Base-Emitter Saturation Voltage | VBE(SAT) | 2.6 | V | IC=500mA, IB=50mA | 1 | ||
| DC Current Gain | hFE | 75 | VCE=10V, IC=0.1mA | 1 | |||
| DC Current Gain | hFE | 100 | VCE=10V, IC=1.0mA | 1 | |||
| DC Current Gain | hFE | 100 | 300 | VCE=10V, IC=150mA | 1 | ||
| DC Current Gain | hFE | 50 | VCE=10V, IC=500mA | 1 | |||
| Transition Frequency | fT | 200 | MHz | VCE=20V, IC=50mA, f=100MHz | 2 | ||
| Output Capacitance | Cob | 8 | pF | VCB=10V, IE=0, f=1.0MHz | 2 | ||
| Input Capacitance | Cib | 30 | pF | VBE=2.0V, IC=0, f=1.0MHz | 2 | ||
| Turn-on Time | ton | 45 | ns | VCC=30V, VBE=0.5V, IC=150mA, IB1=15mA | 2 | ||
| Delay Time | td | 10 | ns | VCC=30V, VBE=0.5V, IC=150mA, IB1=15mA | 2 | ||
| Rise Time | tr | 40 | ns | VCC=30V, VBE=0.5V, IC=150mA, IB1=15mA | 2 | ||
| Turn-off Time | toff | 100 | ns | VCC=6.0V, IC=150mA, IB1=IB2=15mA | 2 | ||
| Storage Time | ts | 80 | ns | VCC=6.0V, IC=150mA, IB1=IB2=15mA | 2 | ||
| Fall Time | tf | 30 | ns | VCC=6.0V, IC=150mA, IB1=IB2=15mA | 2 | ||
| Thermal Resistance, junction to ambient | ΘJA | 500 | °C/W | 1 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | tin | 1. If requesting Tin/Lead plated devices, add the suffix “ TIN/LEAD” to the part number when ordering (example: 2N2222A TIN/LEAD). | 3 |
CAD (KiCad official)
- Symbol:
CMUT2907A TR PBFREE - 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:
cmut2907a-tr-pbfree-etched.step/cmut2907a-tr-pbfree-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);cmut2907a-tr-pbfree.step/cmut2907a-tr-pbfree.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Central Semicon datasheet (5 pp, sha256
b585d16608f7d57a, 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).