component
2SA1225
Public Made by Adomby adom
Changjiang Electronics Tech (CJ) Bipolar Transistors - BJT, TO-252-2L. 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
markdown2SA1225
Changjiang Electronics Tech (CJ) · Bipolar Transistors - BJT · TO-252-2L
2SA1225 from Changjiang Electronics Tech (CJ), in a TO-252-2L. 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; VEBO max is -5 V and V(BR)EBO is -5 V min at IE=-1 mA. |
| 2 | COLLECTOR | passive | Collector terminal; VCBO and VCEO are -160 V, IC max is -1.5 A. |
| 3 | EMITTER | passive | Emitter terminal of the PNP transistor, common reference for VCE and VBE specifications. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjiang Electronics Tech (CJ) |
| Package | TO-252-2L |
| 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 | -160 | V | Ta=25℃ | 1 | ||
| Collector-Emitter Voltage | VCEO | -160 | V | Ta=25℃ | 1 | ||
| Emitter-Base Voltage | VEBO | -5 | V | Ta=25℃ | 1 | ||
| Collector Current | IC | -1.5 | A | Ta=25℃ | 1 | ||
| Collector Power Dissipation | PC | 1 | W | Ta=25℃ | 1 | ||
| Junction Temperature | Tj | 150 | ℃ | Ta=25℃ | 1 | ||
| Storage Temperature | Tstg | -55 | 150 | ℃ | Ta=25℃ | 1 | |
| Collector-base breakdown voltage | V(BR)CBO | -160 | V | IC=-1mA ,IE=0 | 2 | ||
| Collector-emitter breakdown voltage | V(BR)CEO | -160 | V | IC=-10mA, IB=0 | 2 | ||
| Emitter-base breakdown voltage | V(BR)EBO | -5 | V | IE=-1mA,IC=0 | 2 | ||
| Collector cut-off current | ICBO | -0.1 | μA | VCB=160V,IE=0 | 2 | ||
| Emitter cut-off current | IEBO | -0.1 | μA | VEB=-5V,IC=0 | 2 | ||
| DC current gain | hFE | 70 | 240 | VCE=-5V, IC=-0.1A | 2 | ||
| Collector-emitter saturation voltage | VCE(sat) | -1.5 | V | IC=-0.5A,IB=-50mA | 2 | ||
| Base-emitter voltage | VBE | -1 | V | VCE=-5V, IC=-0.5A | 2 | ||
| Transition frequency | fT | 100 | MHz | VCE=-10V ,IC=-100mA | 2 | ||
| Collector output capacitance | Cob | 30 | pF | VCB=-10V ,IE=0,f=1MHz | 2 |
CAD (KiCad official)
- Symbol:
2SA1225 - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2L (KiCad packages3D, STEP)
- 3D model files:
2sa1225-etched.step/2sa1225-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);2sa1225.step/2sa1225.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjiang Electronics Tech (CJ) datasheet (5 pp, sha256
0adea613556c8ef2, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-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).