component
MMBTRC103SS
Public Made by Adomby adom
CBI Digital Transistors, 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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Contents
README
markdownMMBTRC103SS
CBI · Digital Transistors · SOT-23
MMBTRC103SS from CBI, 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 | Input terminal (labeled Base, R1 Input) with internal bias resistor R1 = 22 kΩ for MMBTRC103SS; input voltage is rated 40 V / -10 V in absolute maximum ratings, and VI(ON) is max 3 V at VO = 0.2 V, IO = 5 mA. |
| 2 | Emitter | passive | Common emitter terminal (labeled Emitter, Common), associated with the internal bias resistor R2 = 22 kΩ listed for MMBTRC103SS. |
| 3 | Collector | output | Output terminal (labeled Collector, Output); output voltage is limited to 50 V and output current to 100 mA, with VO(ON) max 0.3 V at IO = 10 mA, II = 0.5 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | CBI |
| 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 (MMBTRC103SS) | VI | -10 | 40 | V | 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 (MMBTRC103SS) | GI | 70 | at VO = 5 V, IO = 10 mA | 2 | |||
| Output Cutoff Current | IO(OFF) | 500 | nA | at VO = 50 V | 2 | ||
| Input Current (MMBTRC103SS) | II | 0.36 | 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) (MMBTRC103SS) | VI(ON) | 3 | V | at VO = 0.2 V, IO = 5 mA | 2 | ||
| Input Voltage (OFF) (MMBTRC101SS~104SS, applies to MMBTRC103SS) | VI(OFF) | 1 | V | at VO = 5 V, IO = 0.1 mA | 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:
MMBTRC103SS - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
mmbtrc103ss-etched.step/mmbtrc103ss-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);mmbtrc103ss.step/mmbtrc103ss.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: CBI datasheet (6 pp, sha256
2b330cd02ce10f82, 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).