# DCX124EU-7-F

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

DCX124EU-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 | OUT1 | output | Collector output of the first transistor; output current IO is limited to 30 mA (NPN) and -30 mA (PNP) for DCX124EU. |
| 2 | IN2 | input | Base input of the second transistor through its bias resistor; input voltage is limited to -10 to +40 V (NPN) and +10 to -40 V (PNP) for DCX124EU. |
| 3 | COM2 | passive | Common (emitter) terminal of the second transistor and its bias network. |
| 4 | OUT2 | output | Collector output of the second transistor; output current IO is limited to 30 mA (NPN) and -30 mA (PNP) for DCX124EU. |
| 5 | IN1 | input | Base input of the first transistor through its bias resistor; input voltage is limited to -10 to +40 V (NPN) and +10 to -40 V (PNP) for DCX124EU. |
| 6 | COM1 | passive | Common (emitter) terminal of the first transistor and its bias network. |

## 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 |
|---|---|---|---|---|---|---|---|
| Input Resistor (R1) Tolerance (NPN, R1/R2 section) | R1 | -30 |  | 30 | % |  | 5 |
| Input Resistor (R1) Tolerance (PNP, R1/R2 section) | R1 | -30 |  | 30 | % |  | 6 |
| Resistance Ratio Tolerance (NPN) | R2/R1 | -20 |  | 20 |  |  | 5 |
| Resistance Ratio Tolerance (PNP) | R2/R1 | -20 |  | 20 | % |  | 6 |
| Input Voltage Vl(off) (NPN) | Vl(off) | 0.5 | 1.1 |  | V | VCC = 5V, IO = 100μA | 5 |
| Input Voltage Vl(off) (PNP) | Vl(off) | -0.5 | -1.1 |  | V | VCC = -5V, IO = -100μA | 6 |
| Input Voltage Vl(on) (NPN) | Vl(on) |  | 1.9 | 3 | V | VO = 0.3V, IO = 5mA | 5 |
| Input Voltage Vl(on) (PNP) | Vl(on) |  | -1.9 | -3 | V | VO = -0.3V, IO = -5mA | 6 |
| Output Voltage VO(on) (NPN) | VO(on) |  | 0.1 | 0.3 | V | IO/Il = 10mA / 0.5mA | 5 |
| Output Voltage VO(on) (PNP) | VO(on) |  | -0.1 | -0.3 | V | IO/Il = -10mA / -0.5mA | 6 |
| Input Current Il (NPN) | Il |  |  | 0.36 | mA | VI = 5V | 5 |
| Input Current Il (PNP) | Il |  |  | -0.36 | mA | VI = -5V | 6 |
| Output Current IO(off) (NPN) | IO(off) |  |  | 0.5 | μA | VCC = 50V, VI = 0V | 5 |
| Output Current IO(off) (PNP) | IO(off) |  |  | -0.5 | μA | VCC = -50V, VI = 0V | 6 |
| DC Current Gain Gl (NPN) | Gl | 56 |  |  |  | VO = 5V, IO = 5mA | 5 |
| DC Current Gain Gl (PNP) | Gl | 56 |  |  |  | VO = -5V, IO = -5mA | 6 |
| Input Resistor R1 nominal (NPN and PNP) | R1 |  | 22 |  | kΩ | R1(NOM) for DCX124EU | 1 |
| Input Resistor R2 nominal (NPN and PNP) | R2 |  | 22 |  | kΩ | R2(NOM) for DCX124EU | 1 |
| Supply Voltage (NPN) | VO |  |  | 50 | V |  | 3 |
| Supply Voltage (PNP) | VO |  |  | 50 | V |  | 3 |
| Input Voltage (NPN) | VI | -10 |  | 40 | V |  | 3 |
| Input Voltage (PNP) | VI | -40 |  | 10 | V |  | 3 |
| Output Current (NPN) | IO |  |  | 30 | mA |  | 3 |
| Output Current (PNP) | IO |  |  | -30 | mA |  | 3 |
| Peak Output Current (NPN) | ICM |  |  | 100 | mA |  | 3 |
| Peak Output Current (PNP) | ICM |  |  | -100 | mA |  | 3 |
| Power Dissipation | PD |  |  | 200 | mW | Mounted on FR-4 PC Board with minimum recommended pad layout (Note 6); 150mW per element must not be exceeded (Note 7) | 3 |
| Thermal Resistance, Junction to Ambient Air | RJA |  |  | 625 | °C/W | Mounted on FR-4 PC Board with minimum recommended pad layout (Note 6) | 3 |
| Operating and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | °C |  | 3 |

## 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: `DCX124EU-7-F`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `dcx124eu-7-f-etched.step` / `dcx124eu-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dcx124eu-7-f.step` / `dcx124eu-7-f.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Diodes Incorporated datasheet](https://www.diodes.com/assets/Datasheets/DCX124EU-7-F.pdf) (14 pp, sha256 `191dabd47d65778d`, retrieved 2026-11-04, tier: manufacturer)
- **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/dcx124eu-7-f-datasheet.pdf)