component
DTA144EUA
Public Made by Adomby adom
Changjing Digital Transistors, SOT-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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DTA144EUA
Changjing · Digital Transistors · SOT-323
DTA144EUA 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; the input voltage VIN is rated from -40 V to +10 V and the input resistor is built in (R1 typ. 47 kΩ). |
| 2 | GND | power_in | Ground reference pin of the built-in bias resistor inverter circuit. |
| 3 | OUT | output | Output pin; the output current IO is rated at -30 mA maximum. |
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 | -40 | 10 | V | 2 | ||
| Output Current | IO | -30 | mA | 2 | |||
| Peak Collector Current | ICM | -100 | mA | 2 | |||
| Power Dissipation | PD | 200 | mW | 2 | |||
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | 150 | ℃ | 2 | ||
| Input voltage | VI(off) | -0.5 | V | VCC=-5V,IO=-100µA | 2 | ||
| Input voltage | VI(on) | -3 | V | VO=-0.3V,IO=-2 mA | 2 | ||
| Output voltage | VO(on) | -0.3 | V | IO/II=-10mA/-0.5mA | 2 | ||
| Input current | II | -0.18 | mA | VI=-5V | 2 | ||
| Output current | IO(off) | -0.5 | μA | VCC=-50V,VI=0 | 2 | ||
| DC current gain | GI | 68 | VO=-5V,IO=-5mA | 2 | |||
| Input resistance | R1 | 32.9 | 47 | 61.1 | kΩ | 2 | |
| Resistance ratio | R2/R1 | 0.8 | 1 | 1.2 | 2 |
CAD (KiCad official)
- Symbol:
DTA144EUA - Footprint:
Package_TO_SOT_SMD:SOT-323_SC-70 - 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files:
dta144eua-etched.step/dta144eua-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);dta144eua.step/dta144eua.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (15 pp, sha256
7ac7a5f3d7ec1c7e, retrieved 2026-10-27, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusoff(skipped (clean text read)), 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).
# DTA144EUA
**Changjing** · Digital Transistors · SOT-323
DTA144EUA 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; the input voltage VIN is rated from -40 V to +10 V and the input resistor is built in (R1 typ. 47 kΩ). |
| 2 | GND | power_in | Ground reference pin of the built-in bias resistor inverter circuit. |
| 3 | OUT | output | Output pin; the output current IO is rated at -30 mA maximum. |
## 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 | -40 | | 10 | V | | 2 |
| Output Current | IO | | | -30 | mA | | 2 |
| Peak Collector Current | ICM | | | -100 | mA | | 2 |
| Power Dissipation | PD | | | 200 | mW | | 2 |
| Operation Junction and Storage Temperature Range | TJ,Tstg | -55 | | 150 | ℃ | | 2 |
| Input voltage | VI(off) | | | -0.5 | V | VCC=-5V,IO=-100µA | 2 |
| Input voltage | VI(on) | -3 | | | V | VO=-0.3V,IO=-2 mA | 2 |
| Output voltage | VO(on) | | | -0.3 | V | IO/II=-10mA/-0.5mA | 2 |
| Input current | II | | | -0.18 | mA | VI=-5V | 2 |
| Output current | IO(off) | | | -0.5 | μA | VCC=-50V,VI=0 | 2 |
| DC current gain | GI | 68 | | | | VO=-5V,IO=-5mA | 2 |
| Input resistance | R1 | 32.9 | 47 | 61.1 | kΩ | | 2 |
| Resistance ratio | R2/R1 | 0.8 | 1 | 1.2 | | | 2 |
## CAD (KiCad official)
- Symbol: `DTA144EUA`
- Footprint: `Package_TO_SOT_SMD:SOT-323_SC-70`
- 3D model: SOT-323 (KiCad packages3D, STEP)
- 3D model files: `dta144eua-etched.step` / `dta144eua-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dta144eua.step` / `dta144eua.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](docs/dta144eua-datasheet.pdf) (15 pp, sha256 `7ac7a5f3d7ec1c7e`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `off` (skipped (clean text read)), 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/dta144eua-datasheet.pdf)