component
DDC143TU-7-F
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Diodes Incorporated Digital Transistors, SOT-363. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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DDC143TU-7-F
Diodes Incorporated · Digital Transistors · SOT-363
DDC143TU-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 | E1 | passive | Common (emitter) terminal of NPN transistor 1 in the DDC143TU bias network; the datasheet gives no pin-specific limit, so the device ratings apply (output current 100 mA, input voltage -5 V max, Absolute Maximum Ratings at TA = +25°C). |
| 2 | B1 | input | Input (base) of transistor 1 through the built-in 4.7 kΩ input resistor R1 (R1 tolerance -30% to +30%); input voltage is limited to -5 V max for DDC143TU. |
| 3 | C2 | output | Output (collector) of transistor 2; output current is rated at 100 mA and peak output current at 100 mA for DDC143TU, with collector-base breakdown voltage BVCBO of 50 V minimum. |
| 4 | E2 | passive | Common (emitter) terminal of NPN transistor 2 in the DDC143TU bias network; the datasheet gives no pin-specific limit, so the device ratings apply (output current 100 mA, input voltage -5 V max). |
| 5 | B2 | input | Input (base) of transistor 2 through the built-in 4.7 kΩ input resistor R1 (R1 tolerance -30% to +30%); input voltage is limited to -5 V max for DDC143TU. |
| 6 | C1 | output | Output (collector) of transistor 1; output current is rated at 100 mA and peak output current at 100 mA for DDC143TU, with collector-base breakdown voltage BVCBO of 50 V minimum. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| 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 | BVCBO | 50 | V | IC = 50μA | 3 | ||
| Collector-Emitter Breakdown Voltage | BVCEO | 50 | V | IC = 1mA | 3 | ||
| Emitter-Base Breakdown Voltage | BVEBO | 5 | V | IE = 50μA | 3 | ||
| Collector Cutoff Current | ICBO | 0.5 | μA | VCB = 50V | 3 | ||
| Emitter Cutoff Current | IEBO | 0.5 | μA | VEB = 4V | 3 | ||
| Collector-Emitter Saturation Voltage | VCE(sat) | 0.3 | V | IC/IB = 2.5mA / 0.25mA (DDC143TU) | 3 | ||
| DC Current Transfer Ratio | hFE | 100 | 250 | 600 | IC = 1mA, VCE = 5V | 3 | |
| Input Resistor (R1) Tolerance | R1 | -30 | 30 | % | 3 | ||
| Input Resistor (R1) nominal value | R1 | 4.7 | kΩ | DDC143TU, R1 (NOM) only; no R2 | 1 | ||
| Supply Voltage | VO | 50 | V | 2 | |||
| Input Voltage (DDC143TU) | VI | -5 | V | Printed as -5V max for DDC143TU | 2 | ||
| Output Current (DDC143TU) | IO | 100 | mA | 2 | |||
| Peak Output Current | ICM | 100 | mA | 2 | |||
| Power Dissipation | PD | 200 | mW | Mounted on FR-4 PC board with minimum recommended pad layout (Notes 6 & 7) | 2 | ||
| Thermal Resistance, Junction to Ambient Air | RθJA | 625 | °C/W | Mounted on FR-4 PC board with minimum recommended pad layout (Note 6) | 2 | ||
| Operating and Storage Temperature Range | TJ, TSTG | -55 | 150 | °C | 2 |
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:
DDC143TU-7-F - Footprint:
Package_TO_SOT_SMD:SOT-363_SC-70-6 - 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files:
ddc143tu-7-f-etched.step/ddc143tu-7-f-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ddc143tu-7-f.step/ddc143tu-7-f.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Diodes Incorporated datasheet (8 pp, sha256
734b84dde0b96a22, retrieved 2026-10-19, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).
# DDC143TU-7-F
**Diodes Incorporated** · Digital Transistors · SOT-363
DDC143TU-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 | E1 | passive | Common (emitter) terminal of NPN transistor 1 in the DDC143TU bias network; the datasheet gives no pin-specific limit, so the device ratings apply (output current 100 mA, input voltage -5 V max, Absolute Maximum Ratings at TA = +25°C). |
| 2 | B1 | input | Input (base) of transistor 1 through the built-in 4.7 kΩ input resistor R1 (R1 tolerance -30% to +30%); input voltage is limited to -5 V max for DDC143TU. |
| 3 | C2 | output | Output (collector) of transistor 2; output current is rated at 100 mA and peak output current at 100 mA for DDC143TU, with collector-base breakdown voltage BVCBO of 50 V minimum. |
| 4 | E2 | passive | Common (emitter) terminal of NPN transistor 2 in the DDC143TU bias network; the datasheet gives no pin-specific limit, so the device ratings apply (output current 100 mA, input voltage -5 V max). |
| 5 | B2 | input | Input (base) of transistor 2 through the built-in 4.7 kΩ input resistor R1 (R1 tolerance -30% to +30%); input voltage is limited to -5 V max for DDC143TU. |
| 6 | C1 | output | Output (collector) of transistor 1; output current is rated at 100 mA and peak output current at 100 mA for DDC143TU, with collector-base breakdown voltage BVCBO of 50 V minimum. |
## Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Diodes Incorporated |
| Package | SOT-363 |
| Category | Transistors/Thyristors |
| 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 | BVCBO | 50 | | | V | IC = 50μA | 3 |
| Collector-Emitter Breakdown Voltage | BVCEO | 50 | | | V | IC = 1mA | 3 |
| Emitter-Base Breakdown Voltage | BVEBO | 5 | | | V | IE = 50μA | 3 |
| Collector Cutoff Current | ICBO | | | 0.5 | μA | VCB = 50V | 3 |
| Emitter Cutoff Current | IEBO | | | 0.5 | μA | VEB = 4V | 3 |
| Collector-Emitter Saturation Voltage | VCE(sat) | | | 0.3 | V | IC/IB = 2.5mA / 0.25mA (DDC143TU) | 3 |
| DC Current Transfer Ratio | hFE | 100 | 250 | 600 | | IC = 1mA, VCE = 5V | 3 |
| Input Resistor (R1) Tolerance | R1 | -30 | | 30 | % | | 3 |
| Input Resistor (R1) nominal value | R1 | | 4.7 | | kΩ | DDC143TU, R1 (NOM) only; no R2 | 1 |
| Supply Voltage | VO | | | 50 | V | | 2 |
| Input Voltage (DDC143TU) | VI | | | -5 | V | Printed as -5V max for DDC143TU | 2 |
| Output Current (DDC143TU) | IO | | | 100 | mA | | 2 |
| Peak Output Current | ICM | | | 100 | mA | | 2 |
| Power Dissipation | PD | | | 200 | mW | Mounted on FR-4 PC board with minimum recommended pad layout (Notes 6 & 7) | 2 |
| Thermal Resistance, Junction to Ambient Air | RθJA | | | 625 | °C/W | Mounted on FR-4 PC board with minimum recommended pad layout (Note 6) | 2 |
| Operating and Storage Temperature Range | TJ, TSTG | -55 | | 150 | °C | | 2 |
## 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: `DDC143TU-7-F`
- Footprint: `Package_TO_SOT_SMD:SOT-363_SC-70-6`
- 3D model: SOT-363 (KiCad packages3D, STEP)
- 3D model files: `ddc143tu-7-f-etched.step` / `ddc143tu-7-f-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ddc143tu-7-f.step` / `ddc143tu-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/8560079717194612736) (8 pp, sha256 `734b84dde0b96a22`, retrieved 2026-10-19, 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/ddc143tu-7-f-datasheet.pdf)