component
BC548CTA
Public Made by Adomby adom
onsemi Bipolar Transistors - BJT, TO-92-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownBC548CTA
onsemi · Bipolar Transistors - BJT · TO-92-3
BC548CTA from onsemi, in a TO-92-3. 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 | Collector | passive | Collector terminal of the NPN transistor; maximum DC collector current is 100 mA per the absolute maximum ratings. |
| 2 | Base | passive | Base terminal of the NPN transistor; maximum emitter-base voltage is 5 V for the BC548 per the absolute maximum ratings. |
| 3 | Emitter | passive | Emitter terminal of the NPN transistor; collector-emitter voltage is limited to 30 V for the BC548 per the absolute maximum ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | onsemi |
| Package | TO-92-3 |
| Category | Transistors |
| 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 | 3 | |||
| Collector-Emitter Voltage | VCEO | 30 | V | 3 | |||
| Emitter-Base Voltage | VEBO | 5 | V | 3 | |||
| Collector Current (DC) | IC | 100 | mA | 3 | |||
| Collector Power Dissipation | PC | 500 | mW | 3 | |||
| Junction Temperature | TJ | 150 | °C | 3 | |||
| Storage Temperature Range | TSTG | -65 | 150 | °C | 3 | ||
| Collector Cut-Off Current | ICBO | 15 | nA | VCB = 30 V, IE = 0 | 3 | ||
| DC Current Gain | hFE | 110 | 800 | VCE = 5 V, IC = 2 mA | 3 | ||
| DC Current Gain (classification C) | hFE | 420 | 800 | 3 | |||
| Collector-Emitter Saturation Voltage | VCE(sat) | 90 | 250 | mV | IC = 10 mA, IB = 0.5 mA | 3 | |
| Collector-Emitter Saturation Voltage | VCE(sat) | 250 | 600 | mV | IC = 100 mA, IB = 5 mA | 3 | |
| Base-Emitter Saturation Voltage | VBE(sat) | 700 | mV | IC = 10 mA, IB = 0.5 mA | 3 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | 900 | mV | IC = 100 mA, IB = 5 mA | 3 | ||
| Base-Emitter On Voltage | VBE(on) | 580 | 660 | 700 | mV | VCE = 5 V, IC = 2 mA | 3 |
| Base-Emitter On Voltage | VBE(on) | 720 | mV | VCE = 5 V, IC = 10 mA | 3 | ||
| Current Gain Bandwidth Product | fT | 300 | MHz | VCE = 5 V, IC = 10 mA, f = 100 MHz | 3 | ||
| Output Capacitance | Cob | 3.5 | 6 | pF | VCB = 10 V, IE = 0, f = 1 MHz | 3 | |
| Input Capacitance | Cib | 9 | pF | VEB = 0.5 V, IC = 0, f = 1 MHz | 3 | ||
| Noise Figure | NF | 2 | 10 | dB | VCE = 5 V, IC = 200 μA, f = 1 kHz, RG = 2 kΩ | 3 |
CAD (KiCad official)
- Symbol:
BC548CTA - Footprint:
Package_TO_SOT_THT:TO-92_Inline - 3D model: TO-92-3 (KiCad packages3D, STEP)
- 3D model files:
bc548cta-etched.step/bc548cta-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);bc548cta.step/bc548cta.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: onsemi datasheet (8 pp, sha256
205672af2f89857d, retrieved 2026-11-04, tier: manufacturer) - 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).