# DCX143TU-7-F

**Diodes Incorporated** · Digital Transistors · SOT-363

DCX143TU-7-F from Diodes Incorporated, in a SOT-363. 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 | C1 | passive | Collector/output terminal of the first transistor section; the DCX143TU output current is rated 100 mA (IO) and 100 mA peak (ICM) with a 50 V supply rating. |
| 2 | B2 | input | Base/input terminal of the second transistor section, which feeds the R1 input resistor (4.7 kΩ nominal, ±30% tolerance); input voltage is limited to -5 V max for the NPN section and +5 V max for the PNP section. |
| 3 | E2 | passive | Emitter/common terminal of the second transistor section, rated with the same 50 V supply and ±100 mA output current limits as the DCX143TU. |
| 4 | C2 | passive | Collector/output terminal of the second transistor section; the DCX143TU output current is rated 100 mA (IO) and 100 mA peak (ICM). |
| 5 | B1 | input | Base/input terminal of the first transistor section, which feeds the R1 input resistor (4.7 kΩ nominal, ±30% tolerance); input voltage is limited to -5 V max for the NPN section and +5 V max for the PNP section. |
| 6 | E1 | passive | Emitter/common terminal of the first transistor section, rated with the same 50 V supply and ±100 mA output current limits as the DCX143TU. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-363 |
| Category | Transistors |
| Pins | 6 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Collector-Base Breakdown Voltage (NPN) | BVCBO | 50 |  |  | V | IC = 50μA | 5 |
| Collector-Emitter Breakdown Voltage (NPN) | BVCEO | 50 |  |  | V | IC = 1mA | 5 |
| Emitter-Base Breakdown Voltage (NPN) | BVEBO | 5 |  |  | V | IE = 50μA | 5 |
| Collector Cutoff Current (NPN) | ICBO |  |  | 0.5 | μA | VCB = 50V | 5 |
| Emitter Cutoff Current (NPN) | IEBO |  |  | 0.5 | μA | VEB = 4V | 5 |
| Collector-Emitter Saturation Voltage (NPN) | VCE(sat) |  |  | 0.3 | V | IC/IB = 2.5mA / 0.25mA DCX143TU | 5 |
| DC Current Transfer Ratio (NPN) | hFE | 100 | 250 | 600 |  | IC = 1mA, VCE = 5V | 5 |
| Input Resistor (R1) Tolerance (NPN) | R1 | -30 |  | 30 | % |  | 5 |
| Collector-Base Breakdown Voltage (PNP) | BVCBO | -50 |  |  | V | IC = -50μA | 6 |
| Collector-Emitter Breakdown Voltage (PNP) | BVCEO | -50 |  |  | V | IC = -1mA | 6 |
| Emitter-Base Breakdown Voltage (PNP) | BVEBO | -5 |  |  | V | IE = -50μA | 6 |
| Collector Cutoff Current (PNP) | ICBO |  |  | -0.5 | μA | VCB = -50V | 6 |
| Emitter Cutoff Current (PNP) | IEBO |  |  | -0.5 | μA | VEB = -4V | 6 |
| Collector-Emitter Saturation Voltage (PNP) | VCE(sat) |  |  | -0.3 | V | IC/IB = 2.5mA / 0.25mA DCX143TU | 6 |
| DC Current Transfer Ratio (PNP) | hFE | 100 | 250 | 600 |  | IC = -1mA, VCE = -5V | 6 |
| Input Resistor (R1) Tolerance (PNP) | R1 | -30 |  | 30 | % |  | 6 |
| Supply Voltage (NPN section) | VO |  |  | 50 | V | NPN section, TA = +25°C | 3 |
| Input Voltage (NPN section, DCX143TU) | VI |  |  | -5 | V | NPN section; printed as '-5V Max' | 3 |
| Output Current (NPN section, DCX143TU) | IO |  |  | 100 | mA | NPN section, TA = +25°C | 3 |
| Peak Output Current (NPN section) | ICM |  |  | 100 | mA | NPN section, TA = +25°C | 3 |
| Supply Voltage (PNP section) | VO |  |  | 50 | V | PNP section, TA = +25°C | 3 |
| Input Voltage (PNP section, DCX143TU) | VI |  |  | 5 | V | PNP section; printed as '+5V Max' | 3 |
| Output Current (PNP section, DCX143TU) | IO |  |  | -100 | mA | PNP section, TA = +25°C | 3 |
| Peak Output Current (PNP section) | ICM |  |  | -100 | mA | PNP section, TA = +25°C | 3 |
| Power Dissipation | PD |  |  | 200 | mW | TA = +25°C; Notes 6, 7 | 3 |
| Power Dissipation per element | PD |  |  | 150 | mW | per element; Note 7 | 3 |
| Thermal Resistance, Junction to Ambient Air | RθJA |  |  | 625 | °C/W | Note 6: mounted on FR-4 PC board with minimum recommended pad layout | 3 |
| Operating and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 3 |
| Input Resistor R1 (nominal) | R1 |  | 4.7 |  | kΩ | R1 NOM for DCX143TU per ordering table | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin | • Terminals: Finish, Matte Tin Plated Leads, Solderable per MIL-STD-202, Method 208 | 1 |

## CAD (KiCad official)

- Symbol: `DCX143TU-7-F`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `dcx143tu-7-f-etched.step` / `dcx143tu-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dcx143tu-7-f.step` / `dcx143tu-7-f.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [Diodes Incorporated datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8560080757688999936) (14 pp, sha256 `191dabd47d65778d`, 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/dcx143tu-7-f-datasheet.pdf)