component
AD-DTC143XM
Public Made by Adomby adom
Changjing Digital Transistors, SOT-723. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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AD-DTC143XM
Changjing · Digital Transistors · SOT-723
AD-DTC143XM from Changjing, in a SOT-723. 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 of the NPN digital transistor, connected through built-in R1 (4.7 kΩ typ) to the base; input voltage range -7 to 20 V, VI(off) min 0.3 V and VI(on) max 2.5 V. |
| 2 | GND | power_in | Ground, connected to the emitter and to R2 of the built-in bias network. |
| 3 | OUT | output | Output at the NPN collector; rated up to 100 mA output current and 50 V supply voltage, with VO(on) of 0.1 V typ (0.3 V max) at 10 mA. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-723 |
| 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) | 0.3 | V | VCC = 5V, IO = 100µA | 3 | ||
| Input voltage (on) | VI(on) | 2.5 | V | VO = 0.3V, IO = 20mA | 3 | ||
| Output voltage (on) | VO(on) | 0.1 | 0.3 | V | IO/II = 10mA/0.5mA | 3 | |
| Input current | II | 1.8 | mA | VI = 5V | 3 | ||
| Output current (off) | IO(off) | 0.5 | µA | VCC = 50V, VI = 0V | 3 | ||
| DC current gain | GI | 30 | - | VO = 5V, IO = 10mA | 3 | ||
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | 3 | |
| Resistance ratio | R2/R1 | 1.7 | 2.1 | 2.6 | - | 3 | |
| Supply voltage | VCC | 50 | V | 3 | |||
| Input voltage | VIN | -7 | 20 | V | 3 | ||
| Output current | IO | 100 | mA | Tj = 25°C (footnote 1) | 3 | ||
| Maximum power dissipation (SOT-723, M column) | PD | 100 | mW | Tj = 25°C (footnote 1) | 3 | ||
| Operating junction and storage temperature range | Tj, Tstg | -55 | 150 | °C | 3 |
CAD (KiCad official)
- Symbol:
AD-DTC143XM - Footprint:
Package_TO_SOT_SMD:SOT-723 - 3D model: SOT-723, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.5 mm nominal SOT-723 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
ad-dtc143xm-etched.step/ad-dtc143xm-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad-dtc143xm.step/ad-dtc143xm.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (17 pp, sha256
4501c1e54b9bf20e, retrieved 2026-10-17, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-opus-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).
# AD-DTC143XM
**Changjing** · Digital Transistors · SOT-723
AD-DTC143XM from Changjing, in a SOT-723. 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 of the NPN digital transistor, connected through built-in R1 (4.7 kΩ typ) to the base; input voltage range -7 to 20 V, VI(off) min 0.3 V and VI(on) max 2.5 V. |
| 2 | GND | power_in | Ground, connected to the emitter and to R2 of the built-in bias network. |
| 3 | OUT | output | Output at the NPN collector; rated up to 100 mA output current and 50 V supply voltage, with VO(on) of 0.1 V typ (0.3 V max) at 10 mA. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-723 |
| 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) | 0.3 | | | V | VCC = 5V, IO = 100µA | 3 |
| Input voltage (on) | VI(on) | | | 2.5 | V | VO = 0.3V, IO = 20mA | 3 |
| Output voltage (on) | VO(on) | | 0.1 | 0.3 | V | IO/II = 10mA/0.5mA | 3 |
| Input current | II | | | 1.8 | mA | VI = 5V | 3 |
| Output current (off) | IO(off) | | | 0.5 | µA | VCC = 50V, VI = 0V | 3 |
| DC current gain | GI | 30 | | | - | VO = 5V, IO = 10mA | 3 |
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | | 3 |
| Resistance ratio | R2/R1 | 1.7 | 2.1 | 2.6 | - | | 3 |
| Supply voltage | VCC | | | 50 | V | | 3 |
| Input voltage | VIN | -7 | | 20 | V | | 3 |
| Output current | IO | | | 100 | mA | Tj = 25°C (footnote 1) | 3 |
| Maximum power dissipation (SOT-723, M column) | PD | | | 100 | mW | Tj = 25°C (footnote 1) | 3 |
| Operating junction and storage temperature range | Tj, Tstg | -55 | | 150 | °C | | 3 |
## CAD (KiCad official)
- Symbol: `AD-DTC143XM`
- Footprint: `Package_TO_SOT_SMD:SOT-723`
- 3D model: SOT-723, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.5 mm nominal SOT-723 height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files: `ad-dtc143xm-etched.step` / `ad-dtc143xm-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-dtc143xm.step` / `ad-dtc143xm.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/8590281635619893248) (17 pp, sha256 `4501c1e54b9bf20e`, retrieved 2026-10-17, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-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/ad-dtc143xm-datasheet.pdf)