component
MMDT3946F
Public Made by Adomby adom
YFW Bipolar (BJT), SOT-23-6L. 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
markdownMMDT3946F
YFW · Bipolar (BJT) · SOT-23-6L
MMDT3946F from YFW, in a SOT-23-6L. 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 NPN 3904-type transistor (Q1); VEBO rating 5 V, IC continuous 0.2 A. |
| 2 | B1 | input | Base of the NPN 3904-type transistor (Q1); emitter-base voltage max 5 V. |
| 3 | C2 | passive | Collector of the PNP 3906-type transistor (Q2); VCEO -40 V, VCBO -40 V, IC continuous -0.2 A. |
| 4 | E2 | passive | Emitter of the PNP 3906-type transistor (Q2); VEBO rating -5 V. |
| 5 | B2 | input | Base of the PNP 3906-type transistor (Q2); emitter-base voltage max -5 V. |
| 6 | C1 | passive | Collector of the NPN 3904-type transistor (Q1); VCEO 40 V, VCBO 60 V, IC continuous 0.2 A. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| Package | SOT-23-6L |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector-Base Voltage (NPN 3904) | VCBO | 60 | V | 1 | |||
| Collector-Emitter Voltage (NPN 3904) | VCEO | 40 | V | 1 | |||
| Emitter-Base Voltage (NPN 3904) | VEBO | 5 | V | 1 | |||
| Collector Current -Continuous (NPN 3904) | IC | 0.2 | A | 1 | |||
| Collector Power Dissipation (NPN 3904) | PC | 0.3 | W | 1 | |||
| Junction Temperature (NPN 3904) | TJ | 150 | ℃ | 1 | |||
| Storage Temperature (NPN 3904) | Tstg | -55 | 150 | ℃ | 1 | ||
| Collector-Base Voltage (PNP 3906) | VCBO | -40 | V | 2 | |||
| Collector-Emitter Voltage (PNP 3906) | VCEO | -40 | V | 2 | |||
| Emitter-Base Voltage (PNP 3906) | VEBO | -5 | V | 2 | |||
| Collector Current -Continuous (PNP 3906) | IC | -0.2 | A | 2 | |||
| Collector Power Dissipation (PNP 3906) | PC | 0.2 | W | 2 | |||
| Junction Temperature (PNP 3906) | TJ | 150 | ℃ | 2 | |||
| Storage Temperature (PNP 3906) | Tstg | -55 | 150 | ℃ | 2 | ||
| Collector-base breakdown voltage (NPN 3904) | V(BR)CBO | 60 | V | IC = 10μA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage (NPN 3904) | V(BR)CEO | 40 | V | IC= 1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage (NPN 3904) | V(BR)EBO | 5 | V | IE= 10μA, IC=0 | 1 | ||
| Collector cut-off current (NPN 3904) | ICBO | 0.05 | μA | VCB= 30 V , IE=0 | 1 | ||
| Collector cut-off current (NPN 3904) | ICEO | 0.5 | μA | VCE= 30 V , IB=0 | 1 | ||
| Emitter cut-off current (NPN 3904) | IEBO | 0.05 | μA | VEB= 5V , IC=0 | 1 | ||
| DC current gain hFE(1) (NPN 3904) | hFE(1) | 40 | VCE= 1V, IC= 0.1mA | 1 | |||
| DC current gain hFE(2) (NPN 3904) | hFE(2) | 70 | VCE= 1V, IC= 1mA | 1 | |||
| DC current gain hFE(3) (NPN 3904) | hFE(3) | 100 | 300 | VCE= 1V, IC= 10mA | 1 | ||
| DC current gain hFE(4) (NPN 3904) | hFE(4) | 60 | VCE= 1V, IC= 50mA | 1 | |||
| DC current gain hFE(5) (NPN 3904) | hFE(5) | 30 | VCE= 1V, IC= 100mA | 1 | |||
| Collector-emitter saturation voltage VCE(sat)1 (NPN 3904) | VCE(sat)1 | 0.2 | V | IC=10 mA, IB= 1mA | 1 | ||
| Collector-emitter saturation voltage VCE(sat)2 (NPN 3904) | VCE(sat)2 | 0.3 | V | IC=50 mA, IB= 5mA | 1 | ||
| Base-emitter saturation voltage VBE(sat)1 (NPN 3904) | VBE(sat)1 | 0.65 | 0.85 | V | IC= 10 mA, IB= 1mA | 1 | |
| Base-emitter saturation voltage VBE(sat)2 (NPN 3904) | VBE(sat)2 | 0.95 | V | IC= 50 mA, IB= 5mA | 1 | ||
| Transition frequency (NPN 3904) | fT | 300 | MHz | VCE=20V,IC=20mA, f=100MHz | 1 | ||
| Noise figure (NPN 3904) | NF | 5 | dB | VCE=5V,Ic=0.1mA, f=1KHz,Rg=1KΩ | 1 | ||
| Output capacitance (NPN 3904) | Cob | 4 | pF | VCB=5V,IE=0,f=1MHz | 1 | ||
| Delay time (NPN 3904) | td | 35 | nS | VCC=3V, VBE=0.5V, IC=10mA, IB1=-IB2=1mA | 1 | ||
| Rise time (NPN 3904) | tr | 35 | nS | 1 | |||
| Storage time (NPN 3904) | tS | 200 | nS | VCC=3V, IC=10mA, IB1=-IB2= 1mA | 1 | ||
| Fall time (NPN 3904) | tf | 50 | nS | 1 | |||
| Collector-base breakdown voltage (PNP 3906) | V(BR)CBO | -40 | V | IC=-10μA,IE=0 | 2 | ||
| Collector-emitter breakdown voltage (PNP 3906) | V(BR)CEO | -40 | V | IC=-1mA,IB=0 | 2 | ||
| Emitter-base breakdown voltage (PNP 3906) | V(BR)EBO | -5 | V | IE=-10μA,IC=0 | 2 | ||
| Collector cut-off current (PNP 3906) | ICBO | -0.05 | μA | VCB=-30V,IE=0 | 2 | ||
| Emitter cut-off current (PNP 3906) | IEBO | -0.05 | μA | VEB=-5V,IC=0 | 2 | ||
| DC current gain hFE(1) (PNP 3906) | hFE(1) | 60 | VCE=-1V,IC=-0.1mA | 2 | |||
| DC current gain hFE(2) (PNP 3906) | hFE(2) | 80 | VCE=-1V,IC=-1mA | 2 | |||
| DC current gain hFE(3) (PNP 3906) | hFE(3) | 100 | 300 | VCE=-1V,IC=-10mA | 2 | ||
| DC current gain hFE(4) (PNP 3906) | hFE(4) | 60 | VCE=-1V,IC=-50mA | 2 | |||
| DC current gain hFE(5) (PNP 3906) | hFE(5) | 30 | VCE=-1V,IC=-100mA | 2 | |||
| Collector-emitter saturation voltage VCE(sat)1 (PNP 3906) | VCE(sat)1 | -0.25 | V | IC=-10mA,IB=-1mA | 2 | ||
| Collector-emitter saturation voltage VCE(sat)2 (PNP 3906) | VCE(sat)2 | -0.4 | V | IC=-50mA,IB=-5mA | 2 | ||
| Base-emitter saturation voltage VBE(sat)1 (PNP 3906) | VBE(sat)1 | -0.65 | -0.85 | V | IC=-10mA,IB=-1mA | 2 | |
| Base-emitter saturation voltage VBE(sat)2 (PNP 3906) | VBE(sat)2 | -0.95 | V | IC=-50mA,IB=-5mA | 2 | ||
| Transition frequency (PNP 3906) | fT | 250 | MHz | VCE=-20V,IC=-10mA,f=100MHz | 2 | ||
| Collector output capacitance (PNP 3906) | Cob | 4.5 | pF | VCB=-5V,IE=0,f=1MHz | 2 | ||
| Noise figure (PNP 3906) | NF | 4 | dB | VCE=-5V,Ic=-0.1mA, f=1KHz,Rg=1KΩ | 2 | ||
| Delay time (PNP 3906) | td | 35 | nS | VCC=-3V, VBE=-0.5V, IC=-10mA, IB1=-IB2=-1mA | 2 | ||
| Rise time (PNP 3906) | tr | 35 | nS | 2 | |||
| Storage time (PNP 3906) | tS | 225 | nS | VCC=-3V, IC=-10mA, IB1=-IB2=- 1mA | 2 | ||
| Fall time (PNP 3906) | tf | 75 | nS | 2 |
CAD (KiCad official)
- Symbol:
MMDT3946F - Footprint:
Package_TO_SOT_SMD:SOT-23-6 - 3D model: SOT-23-6L (KiCad packages3D, STEP)
- 3D model files:
mmdt3946f-etched.step/mmdt3946f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmdt3946f.step/mmdt3946f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: YFW datasheet (3 pp, sha256
1152940bd13ea5b1, 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).