component
2SB1440
Public Made by Adomby adom
Changjing Bipolar (BJT), SOT-89-3L. 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
markdown2SB1440
Changjing · Bipolar (BJT) · SOT-89-3L
2SB1440 from Changjing, in a SOT-89-3L. 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 terminal of the PNP transistor, with the emitter-base voltage rated at -5 V (VEBO). |
| 2 | COLLECTOR | passive | Collector terminal of the PNP transistor, rated for -50 V VCBO and VCEO, -2 A continuous collector current, and 500 mW collector power dissipation. |
| 3 | EMITTER | passive | Emitter terminal of the PNP transistor, referenced to the -5 V VEBO and -50 V VCEO ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-89-3L |
| 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 | -50 | V | 1 | |||
| Collector-emitter voltage | VCEO | -50 | V | 1 | |||
| Emitter-base voltage | VEBO | -5 | V | 1 | |||
| Collector current -Continuous | IC | -2 | A | 1 | |||
| Collector power dissipation | PC | 500 | mW | 1 | |||
| Junction temperature | TJ | 150 | ℃ | 1 | |||
| Storage temperature | Tstg | -55 | 150 | ℃ | 1 | ||
| Collector-base breakdown voltage | V(BR)CBO | -50 | V | IC=-10μA, IE=0 | 1 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | -50 | V | IC=-1mA, IB=0 | 1 | ||
| Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-10μA, IC=0 | 1 | ||
| Collector cut-off current | ICBO | -1 | μA | VCB=-50V, IE=0 | 1 | ||
| Emitter cut-off current | IEBO | -1 | μA | VEB=-5V, IC=0 | 1 | ||
| DC current gain hFE1 | hFE1 | 120 | 340 | VCE=-2V, IC=-200mA | 1 | ||
| DC current gain hFE2 | hFE2 | 60 | VCE=-2V, IC=-1A | 1 | |||
| Collector-emitter saturation voltage | VCE(sat) | -0.3 | V | IC=-1A, IB=-50mA | 1 | ||
| Transition frequency | fT | 80 | MHz | VCE=-10V, IC=50mA, f=200MHz | 1 | ||
| Collector output capacitance | Cob | 60 | pF | VCB=-10V, IE=0, f=1MHz | 1 |
CAD (KiCad official)
- Symbol:
2SB1440 - Footprint:
Package_TO_SOT_SMD:SOT-89-3 - 3D model: SOT-89-3L (KiCad packages3D, STEP)
- 3D model files:
2sb1440-etched.step/2sb1440-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sb1440.step/2sb1440.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (4 pp, sha256
9732d5d2c7d7850c, 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).