component
BC848A
Public Made by Adomby adom
ALJ 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
markdownBC848A
ALJ · Bipolar (BJT) · SOT-23
BC848A from ALJ, 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 | passive | Base terminal of the NPN transistor, rated with a maximum emitter-base voltage VEBO of 6 V. |
| 2 | Emitter | passive | Emitter terminal of the NPN transistor, with a maximum collector current IC of 0.1 A. |
| 3 | Collector | passive | Collector terminal of the NPN transistor, with collector-base and collector-emitter voltages of 30 V each and a collector power dissipation PC of 200 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ALJ |
| 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 |
|---|---|---|---|---|---|---|---|
| Collector Base Voltage | VCBO | 30 | V | 1 | |||
| Collector Emitter Voltage | VCEO | 30 | V | 1 | |||
| Emitter Base Voltage | VEBO | 6 | V | 1 | |||
| Collector Current | IC | 0.1 | A | 1 | |||
| Collector Power Dissipation | PC | 200 | mW | 1 | |||
| Junction Temperature | Tj | 150 | °C | 1 | |||
| Storage Temperature | Tstg | -55 | 150 | °C | 1 | ||
| Thermal Resistance from Junction to Ambient | RθJA | 625 | °C/W | 1 | |||
| Collector-base breakdown voltage | V(BR)CBO | 30 | V | IC=10µA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | 30 | V | IC=10mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | 6 | V | IE=10µA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | 100 | nA | VCB=30V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | 100 | nA | VEB=5V, IC=0 | 1 | ||
| DC current gain (BC848A) | hFE | 110 | 220 | VCE = 5V, IC = 2mA | 1 | ||
| Collector-emitter saturation voltage | VCE(sat) | 0.5 | V | IC = 100mA, IB = 5mA | 1 | ||
| Base-emitter saturation voltage | VBE(sat) | 1.1 | V | IC = 100mA, IB = 5mA | 1 | ||
| Transition frequency | fT | 100 | MHz | VCE=5V, IC=10mA, f=100MHz | 1 | ||
| Collector output capacitance | Cob | 4.5 | pF | VCB = 10V, f = 1MHz | 1 |
CAD (KiCad official)
- Symbol:
BC848A - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
bc848a-etched.step/bc848a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc848a.step/bc848a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ALJ datasheet (2 pp, sha256
5e5e0639a65deb1b, retrieved 2026-10-09, 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).