component
AD-DTC143ZCA
Public Made by Adomby adom
Changjing Digital Transistors, SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
AD-DTC143ZCA
Changjing · Digital Transistors · SOT-23
AD-DTC143ZCA from Changjing, in a SOT-23. 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 connected through built-in R1 (4.7 kΩ typ) to the base; input voltage range is -5 V to 30 V, with VI(off) ≥ 0.5 V and VI(on) ≤ 1.3 V. |
| 2 | GND | power_in | Ground, connected to the emitter and to the built-in R2 base-emitter resistor. |
| 3 | OUT | output | Open-collector output of the NPN transistor, rated for up to 100 mA output current and 50 V supply voltage. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage (VI(off)) | VI(off) | 0.5 | V | VCC = 5V, IO = 100µA | 3 | ||
| Input voltage (VI(on)) | VI(on) | 1.3 | V | VO = 0.3V, IO = 5mA | 3 | ||
| Output voltage | VO(on) | 0.1 | 0.3 | V | IO/II = 5mA/0.25mA | 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 | 80 | VO = 5V, IO = 10mA | 3 | |||
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | 3 | |
| Resistance ratio | R2 /R1 | 8 | 10 | 12 | 3 | ||
| Supply voltage | VCC | 50 | V | 3 | |||
| Input voltage | VIN | -5 | 30 | V | 3 | ||
| Output current | IO | 100 | mA | Maximum allowed temperature Tj = 25°C (footnote 1) | 3 | ||
| Maximum power dissipation (SOT-23, CA column) | PD | 200 | mW | Maximum allowed temperature Tj = 25°C (footnote 1) | 3 | ||
| Operating junction and storage temperature range | Tj, Tstg | -55 | 150 | °C | 3 |
CAD (KiCad official)
- Symbol:
AD-DTC143ZCA - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files:
ad-dtc143zca-etched.step/ad-dtc143zca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad-dtc143zca.step/ad-dtc143zca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Changjing datasheet (17 pp, sha256
fb1e9394d33b7c01, retrieved 2026-10-30, 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-DTC143ZCA
**Changjing** · Digital Transistors · SOT-23
AD-DTC143ZCA from Changjing, in a SOT-23. 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 connected through built-in R1 (4.7 kΩ typ) to the base; input voltage range is -5 V to 30 V, with VI(off) ≥ 0.5 V and VI(on) ≤ 1.3 V. |
| 2 | GND | power_in | Ground, connected to the emitter and to the built-in R2 base-emitter resistor. |
| 3 | OUT | output | Open-collector output of the NPN transistor, rated for up to 100 mA output current and 50 V supply voltage. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| 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 |
|---|---|---|---|---|---|---|---|
| Input voltage (VI(off)) | VI(off) | 0.5 | | | V | VCC = 5V, IO = 100µA | 3 |
| Input voltage (VI(on)) | VI(on) | | | 1.3 | V | VO = 0.3V, IO = 5mA | 3 |
| Output voltage | VO(on) | | 0.1 | 0.3 | V | IO/II = 5mA/0.25mA | 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 | 80 | | | | VO = 5V, IO = 10mA | 3 |
| Input resistance | R1 | 3.29 | 4.7 | 6.11 | kΩ | | 3 |
| Resistance ratio | R2 /R1 | 8 | 10 | 12 | | | 3 |
| Supply voltage | VCC | | | 50 | V | | 3 |
| Input voltage | VIN | -5 | | 30 | V | | 3 |
| Output current | IO | | | 100 | mA | Maximum allowed temperature Tj = 25°C (footnote 1) | 3 |
| Maximum power dissipation (SOT-23, CA column) | PD | | | 200 | mW | Maximum allowed temperature Tj = 25°C (footnote 1) | 3 |
| Operating junction and storage temperature range | Tj, Tstg | -55 | | 150 | °C | | 3 |
## CAD (KiCad official)
- Symbol: `AD-DTC143ZCA`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ad-dtc143zca-etched.step` / `ad-dtc143zca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ad-dtc143zca.step` / `ad-dtc143zca.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Changjing datasheet](docs/ad-dtc143zca-datasheet.pdf) (17 pp, sha256 `fb1e9394d33b7c01`, retrieved 2026-10-30, 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-dtc143zca-datasheet.pdf)