component
DTA123YUA
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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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DTA123YUA
Changjing · Digital Transistors · SOT-323
DTA123YUA 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 network; the input voltage range is stated as -12 to +5 V in the maximum ratings. |
| 2 | GND | power_in | Ground reference pin of the digital transistor. |
| 3 | OUT | output | Output pin; the output current is stated as -100 mA maximum in the maximum ratings. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-323 |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | -50 | V | 2 | |||
| Input Voltage | VIN | -12 | 5 | V | 2 | ||
| Output Current | IO | -100 | mA | 2 | |||
| Power Dissipation | PD | 200 | mW | 2 | |||
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | 150 | ℃ | 2 | ||
| Input voltage | VI(off) | -0.3 | V | VCC=-5V,IO=-100µA | 2 | ||
| Input voltage | VI(on) | -3 | V | VO=-0.3V,IO=-20mA | 2 | ||
| Output voltage | VO(on) | -0.3 | V | IO/II=-10mA/-0.5mA | 2 | ||
| Input current | II | -3.8 | mA | VI=-5V | 2 | ||
| Output current | IO(off) | -0.5 | µA | VCC=-50V,VI=0 | 2 | ||
| DC current gain | GI | 33 | VO=-5V,IO=-10mA | 2 | |||
| Input resistance | R1 | 1.54 | 2.2 | 2.86 | kΩ | 2 | |
| Resistance ratio | R2/R1 | 3.6 | 4.5 | 5.5 | 2 | ||
| Transition frequency | fT | 250 | MHz | VO=-10V,IO=-5mA,f=100MHz | 2 |
CAD (KiCad official)
- Symbol:
DTA123YUA - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
dta123yua-etched.step/dta123yua-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dta123yua.step/dta123yua.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (15 pp, sha256
c348d2217a340890, retrieved 2026-10-27, 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).
# DTA123YUA
**Changjing** · Digital Transistors · SOT-323
DTA123YUA 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 network; the input voltage range is stated as -12 to +5 V in the maximum ratings. |
| 2 | GND | power_in | Ground reference pin of the digital transistor. |
| 3 | OUT | output | Output pin; the output current is stated as -100 mA maximum in the maximum ratings. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-323 |
| Category | Triode/MOS Tube/Transistor |
| 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 |
|---|---|---|---|---|---|---|---|
| Supply Voltage | VCC | | | -50 | V | | 2 |
| Input Voltage | VIN | -12 | | 5 | V | | 2 |
| Output Current | IO | | | -100 | mA | | 2 |
| Power Dissipation | PD | | | 200 | mW | | 2 |
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | | 150 | ℃ | | 2 |
| Input voltage | VI(off) | | | -0.3 | V | VCC=-5V,IO=-100µA | 2 |
| Input voltage | VI(on) | | | -3 | V | VO=-0.3V,IO=-20mA | 2 |
| Output voltage | VO(on) | | | -0.3 | V | IO/II=-10mA/-0.5mA | 2 |
| Input current | II | | | -3.8 | mA | VI=-5V | 2 |
| Output current | IO(off) | | | -0.5 | µA | VCC=-50V,VI=0 | 2 |
| DC current gain | GI | 33 | | | | VO=-5V,IO=-10mA | 2 |
| Input resistance | R1 | 1.54 | 2.2 | 2.86 | kΩ | | 2 |
| Resistance ratio | R2/R1 | 3.6 | 4.5 | 5.5 | | | 2 |
| Transition frequency | fT | | 250 | | MHz | VO=-10V,IO=-5mA,f=100MHz | 2 |
## CAD (KiCad official)
- Symbol: `DTA123YUA`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `dta123yua-etched.step` / `dta123yua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dta123yua.step` / `dta123yua.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](docs/dta123yua-datasheet.pdf) (15 pp, sha256 `c348d2217a340890`, retrieved 2026-10-27, 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/dta123yua-datasheet.pdf)