MMBTRC106SS

YFW · Bipolar (BJT) · SOT-23

MMBTRC106SS from YFW, 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 is the input pin, with the built-in bias resistor R1 (4.7 kΩ for MMBTRC106SS) in series, and the input voltage is rated 20 V / -5 V for this variant.
2	Emitter	passive	Emitter is the common terminal of the transistor and bias network, with R2 (47 kΩ for MMBTRC106SS) connected between base and emitter.
3	Collector	output	Collector is the output pin, rated for a maximum output voltage of 50 V and output current of 100 mA, with total power dissipation of 200 mW.

Key specifications

Parameter	Value
Manufacturer	YFW
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	Max	Unit	Conditions	Page
Output Voltage	VO		50	V		1
Input Voltage	VI	-5	20	V	MMBTRC106SS; printed as 20, -5	1
Output Current	IO		100	mA		1
Total Power Dissipation	Ptot		200	mW		1
Junction Temperature	Tj		150	°C		1
Storage Temperature Range	Tstg	-55	150	°C		1
DC Current Gain	GI	80			at VO = 5 V, IO = 10 mA	2
Output Cutoff Current	IO(OFF)		500	nA	at VO = 50 V	2
Input Current	II		1.8	mA	at VI = 5 V	2
Output Voltage (ON)	VO(ON)		0.3	V	at IO = 10 mA, II = 0.5 mA	2
Input Voltage (ON)	VI(ON)		1.3	V	at VO = 0.2 V, IO = 5 mA	2
Input Voltage (OFF)	VI(OFF)	0.5		V	at VO = 5 V, IO = 0.1 mA; MMBTRC105SS~106SS	2

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
housing	Abs		SOT-23 Plastic Package Absolute Maximum Ratings (Ta = 25	1

CAD (KiCad official)

Symbol: MMBTRC106SS
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)
3D model files: mmbtrc106ss-etched.step / mmbtrc106ss-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mmbtrc106ss.step / mmbtrc106ss.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: YFW datasheet (6 pp, sha256 02a97b93bf0fe12b, retrieved 2026-10-18, tier: lcsc)
Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF

# MMBTRC106SS

**YFW** · Bipolar (BJT) · SOT-23

MMBTRC106SS from YFW, 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 is the input pin, with the built-in bias resistor R1 (4.7 kΩ for MMBTRC106SS) in series, and the input voltage is rated 20 V / -5 V for this variant. |
| 2 | Emitter | passive | Emitter is the common terminal of the transistor and bias network, with R2 (47 kΩ for MMBTRC106SS) connected between base and emitter. |
| 3 | Collector | output | Collector is the output pin, rated for a maximum output voltage of 50 V and output current of 100 mA, with total power dissipation of 200 mW. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | YFW |
| 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 |
|---|---|---|---|---|---|---|---|
| Output Voltage | VO |  |  | 50 | V |  | 1 |
| Input Voltage | VI | -5 |  | 20 | V | MMBTRC106SS; printed as 20, -5 | 1 |
| Output Current | IO |  |  | 100 | mA |  | 1 |
| Total Power Dissipation | Ptot |  |  | 200 | mW |  | 1 |
| Junction Temperature | Tj |  |  | 150 | °C |  | 1 |
| Storage Temperature Range | Tstg | -55 |  | 150 | °C |  | 1 |
| DC Current Gain | GI | 80 |  |  |  | at VO = 5 V, IO = 10 mA | 2 |
| Output Cutoff Current | IO(OFF) |  |  | 500 | nA | at VO = 50 V | 2 |
| Input Current | II |  |  | 1.8 | mA | at VI = 5 V | 2 |
| Output Voltage (ON) | VO(ON) |  |  | 0.3 | V | at IO = 10 mA, II = 0.5 mA | 2 |
| Input Voltage (ON) | VI(ON) |  |  | 1.3 | V | at VO = 0.2 V, IO = 5 mA | 2 |
| Input Voltage (OFF) | VI(OFF) | 0.5 |  |  | V | at VO = 5 V, IO = 0.1 mA; MMBTRC105SS~106SS | 2 |

## 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 |
|---|---|---|---|---|
| housing | Abs |  | SOT-23 Plastic Package Absolute Maximum Ratings (Ta = 25 | 1 |

## CAD (KiCad official)

- Symbol: `MMBTRC106SS`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbtrc106ss-etched.step` / `mmbtrc106ss-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbtrc106ss.step` / `mmbtrc106ss.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [YFW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590927209945518080) (6 pp, sha256 `02a97b93bf0fe12b`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).

[Datasheet PDF](docs/mmbtrc106ss-datasheet.pdf)