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DTC123JUA
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Changjing Digital Transistors, SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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DTC123JUA
Changjing · Digital Transistors · SOT-323
DTC123JUA from Changjing, in a SOT-323. 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 | IN | input | Input pin of the built-in bias-resistor inverter; the datasheet's maximum input voltage VIN is -5 V to +12 V. |
| 2 | GND | power_in | Ground reference pin; the datasheet gives no separate voltage or current rating for this pin. |
| 3 | OUT | output | Output pin; the maximum output current IO is 100 mA, and the SOT-323 (UA) power dissipation rating is 200 mW. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage (off) | VI(off) | 0.5 | V | VCC=5V,IO=100µA | 2 | ||
| Input voltage (on) | VI(on) | 1.1 | V | VO=0.3V,IO=5mA | 2 | ||
| Output voltage (on) | VO(on) | 0.1 | 0.3 | V | IO/II=5mA/0.25mA | 2 | |
| Input current | II | 3.6 | mA | VI=5V | 2 | ||
| Output current (off) | IO(off) | 0.5 | μA | VCC=50V,VI=0 | 2 | ||
| DC current gain | GI | 80 | VO=5V,IO=10mA | 2 | |||
| Input resistance | R1 | 1.54 | 2.2 | 2.86 | kΩ | 2 | |
| Resistance ratio | R2/R1 | 17 | 21 | 26 | 2 | ||
| Transition frequency | fT | 250 | MHz | VO=10V,IO=5mA,f=100MHz | 2 | ||
| Supply voltage | VCC | 50 | V | Ta=25℃ unless otherwise noted | 2 | ||
| Input voltage | VIN | -5 | 12 | V | Ta=25℃ unless otherwise noted | 2 | |
| Output current | IO | 100 | mA | Ta=25℃ unless otherwise noted | 2 | ||
| Power dissipation (SOT-323 column UA) | PD | 200 | mW | Ta=25℃ unless otherwise noted; column UA of the printed PD row (100 150 200 200 200 300 for M E UA KA CA SA) | 2 | ||
| Operation junction and storage temperature range | TJ,Tstg | -55 | 150 | ℃ | Ta=25℃ unless otherwise noted | 2 |
CAD (KiCad official)
- Symbol:
DTC123JUA - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
dtc123jua-etched.step/dtc123jua-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dtc123jua.step/dtc123jua.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (15 pp, sha256
87b8e288c3b9084b, retrieved 2026-10-18, 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).
# DTC123JUA
**Changjing** · Digital Transistors · SOT-323
DTC123JUA from Changjing, in a SOT-323. 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 | IN | input | Input pin of the built-in bias-resistor inverter; the datasheet's maximum input voltage VIN is -5 V to +12 V. |
| 2 | GND | power_in | Ground reference pin; the datasheet gives no separate voltage or current rating for this pin. |
| 3 | OUT | output | Output pin; the maximum output current IO is 100 mA, and the SOT-323 (UA) power dissipation rating is 200 mW. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage (off) | VI(off) | | | 0.5 | V | VCC=5V,IO=100µA | 2 |
| Input voltage (on) | VI(on) | 1.1 | | | V | VO=0.3V,IO=5mA | 2 |
| Output voltage (on) | VO(on) | | 0.1 | 0.3 | V | IO/II=5mA/0.25mA | 2 |
| Input current | II | | | 3.6 | mA | VI=5V | 2 |
| Output current (off) | IO(off) | | | 0.5 | μA | VCC=50V,VI=0 | 2 |
| DC current gain | GI | 80 | | | | VO=5V,IO=10mA | 2 |
| Input resistance | R1 | 1.54 | 2.2 | 2.86 | kΩ | | 2 |
| Resistance ratio | R2/R1 | 17 | 21 | 26 | | | 2 |
| Transition frequency | fT | | 250 | | MHz | VO=10V,IO=5mA,f=100MHz | 2 |
| Supply voltage | VCC | | | 50 | V | Ta=25℃ unless otherwise noted | 2 |
| Input voltage | VIN | -5 | | 12 | V | Ta=25℃ unless otherwise noted | 2 |
| Output current | IO | | | 100 | mA | Ta=25℃ unless otherwise noted | 2 |
| Power dissipation (SOT-323 column UA) | PD | | | 200 | mW | Ta=25℃ unless otherwise noted; column UA of the printed PD row (100 150 200 200 200 300 for M E UA KA CA SA) | 2 |
| Operation junction and storage temperature range | TJ,Tstg | -55 | | 150 | ℃ | Ta=25℃ unless otherwise noted | 2 |
## CAD (KiCad official)
- Symbol: `DTC123JUA`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `dtc123jua-etched.step` / `dtc123jua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc123jua.step` / `dtc123jua.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590227345798819840) (15 pp, sha256 `87b8e288c3b9084b`, retrieved 2026-10-18, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-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).
[Datasheet PDF](docs/dtc123jua-datasheet.pdf)