component
LBC858ALT1G
Public Made by Adomby adom
LRC Bipolar Transistors - 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
markdownLBC858ALT1G
LRC · Bipolar Transistors - BJT · SOT-23
LBC858ALT1G from LRC, 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 of the PNP transistor, driven with IB of -0.5 mA to -5.0 mA in the saturation test conditions; the emitter-base breakdown voltage BVEBO is -5 V minimum. |
| 2 | EMITTER | passive | Emitter of the PNP transistor; the datasheet gives an emitter-base breakdown voltage BVEBO of -5 V minimum and an emitter-base voltage VEBO rating of -5 V. |
| 3 | COLLECTOR | passive | Collector of the PNP transistor; the datasheet gives a collector-emitter voltage VCEO of -30 V and a continuous collector current IC of -100 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-23 |
| 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 | 1 | |||
| Collector-Emitter Voltage | VCEO | -30 | V | 1 | |||
| Emitter-Base Voltage | VEBO | -5 | V | 1 | |||
| Continuous Collector Current | IC | -100 | mA | 1 | |||
| Junction and Storage Temperature | TJ, Tstg | -55 | 150 | ℃ | 1 | ||
| Total Device Dissipation FR-5 Board | PD | 225 | mW | TA = 25°C, FR-5 board (Note 1) | 1 | ||
| Derate above 25°C (FR-5 Board) | 1.8 | mW/℃ | Derate above 25°C, FR-5 board | 1 | |||
| Thermal resistance junction to ambient (FR-5 Board) | RθJA | 556 | ℃/W | FR-5 board | 1 | ||
| Total Device Dissipation Alumina Substrate | PD | 300 | mW | TA = 25°C, Alumina Substrate (Note 2) | 1 | ||
| Derate above 25°C (Alumina Substrate) | 2.4 | mW/℃ | Derate above 25°C | 1 | |||
| Thermal resistance junction to ambient (Alumina Substrate) | RθJA | 417 | ℃/W | Alumina Substrate | 1 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | -30 | V | IC = -10mA | 2 | ||
| Collector-Base Breakdown Voltage | BVCBO | -30 | V | IC = -10μA | 2 | ||
| Emitter-Base Breakdown Voltage | BVEBO | -5 | V | IE = -1μA | 2 | ||
| Collector Cut-off Current | ICBO | -15 | nA | VCB = -30V | 2 | ||
| Collector Cut-off Current | ICBO | -4 | µA | VCB = -30 V, TA = 150°C | 2 | ||
| DC Current Gain | hFE | 125 | 180 | 250 | IC = -2.0 mA, VCE = -5.0 V | 2 | |
| Collector-Emitter Saturation Voltage | VCE(sat) | -0.3 | V | IC = -10 mA, IB = -0.5 mA | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | -0.65 | V | IC = -100 mA, IB = -5.0 mA | 2 | ||
| Base-Emitter Saturation Voltage | VBE(sat) | -0.9 | V | IC = -100 mA, IB = -5.0 mA | 2 | ||
| Base-Emitter On Voltage | VBE(on) | -0.6 | -0.75 | V | IC = -2.0 mA, VCE = -5.0 V | 2 | |
| Base-Emitter On Voltage | VBE(on) | -0.82 | V | IC = -10 mA, VCE = -5.0 V | 2 | ||
| Current-Gain Bandwidth Product | fT | 100 | MHz | IC = -10 mA, VCE = -5.0 V, f = 100 MHz | 2 | ||
| Output Capacitance | Cob | 4.5 | pF | VCB = -10 V, f = 1.0 MHz | 2 | ||
| Noise Figure | NF | 10 | dB | IC = -0.2 mA, VCE = -5.0 V, RS = 2.0 kΩ, f = 1.0 kHz, BW = 200 Hz | 2 |
CAD (KiCad official)
- Symbol:
LBC858ALT1G - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
lbc858alt1g-etched.step/lbc858alt1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);lbc858alt1g.step/lbc858alt1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (6 pp, sha256
07c0074a3808d68e, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).