component
S-LBSS4250Y3T1G
Public Made by Adomby adom
LRC Bipolar Transistors - BJT, SOT-89. 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
markdownS-LBSS4250Y3T1G
LRC · Bipolar Transistors - BJT · SOT-89
S-LBSS4250Y3T1G from LRC, in a SOT-89. 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 | B | input | Base of the NPN transistor, with VEBO max 6 V and DC current gain 180 to 450 at VCE = 2 V, IC = 50 mA. |
| 2 | C | passive | Collector (also the center-lead tab) of the NPN transistor, with VCEO max 50 V, VCBO max 50 V, IC 2 A continuous and ICP 4 A pulsed. |
| 3 | E | passive | Emitter of the NPN transistor, shown with the arrow in the symbol and the lowest-potential terminal in normal operation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | LRC |
| Package | SOT-89 |
| 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-Emitter Voltage | VCEO | 50 | V | Ta = 25ºC | 1 | ||
| Collector-Base Voltage | VCBO | 50 | V | Ta = 25ºC | 1 | ||
| Emitter-Base Voltage | VEBO | 6 | V | Ta = 25ºC | 1 | ||
| Collector Current | IC | 2 | A | Ta = 25ºC | 1 | ||
| Pulsed Collector Current | ICP | 4 | A | Ta = 25ºC | 1 | ||
| Junction and Storage temperature | TJ,Tstg | -55 | 150 | ºC | 1 | ||
| Total Device Dissipation | PD | 550 | mW | FR-4 Board (Note 1) @ TA = 25ºC | 1 | ||
| Derate above 25ºC | 4.4 | mW/ºC | FR-4 Board (Note 1) | 1 | |||
| Thermal Resistance, Junction-to-Ambient | RΘJA | 225 | ºC/W | FR-4 Board (Note 1) | 1 | ||
| Collector-emitter breakdown voltage | BVCEO | 50 | V | IC = 1mA | 2 | ||
| Collector-base breakdown voltage | BVCBO | 50 | V | IC = 100μA | 2 | ||
| Emitter-base breakdown voltage | BVEBO | 6 | V | IE = 100μA | 2 | ||
| Collector Cutoff Current | ICBO | 1 | µA | VCB = 50 V | 2 | ||
| Emitter Cut-off Current | IEBO | 1 | µA | VEB =4V, IC =0 | 2 | ||
| DC Current Gain | HFE | 180 | 450 | VCE = 2 V,IC = 50mA | 2 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.13 | 0.35 | V | IC = 700mA, IB = 35mA | 2 | |
| Transition Frequency | fT | 360 | MHz | VCE = 10V, IE = -300mA,f = 100 MHz | 2 | ||
| Output capacitance | Cob | 12 | pF | VCB = 10V, IE = 0A, f = 1 MHz | 2 |
CAD (KiCad official)
- Symbol:
S-LBSS4250Y3T1G - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files:
s-lbss4250y3t1g-etched.step/s-lbss4250y3t1g-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);s-lbss4250y3t1g.step/s-lbss4250y3t1g.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: LRC datasheet (6 pp, sha256
9055db7ff7fd4180, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).