# DTC143ZETL

**ROHM Semicon** · Digital Transistors · SOT-416

DTC143ZETL from ROHM Semicon, in a SOT-416. 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 | GND | power_in | Ground / emitter of the built-in NPN transistor; the R2 = 47kΩ base-emitter resistor returns here. |
| 2 | IN | input | Input / base through built-in R1 = 4.7kΩ; input voltage range -5 to 30 V, VI(off) max 0.5 V, VI(on) min 1.3 V. |
| 3 | OUT | output | Output / collector of the built-in NPN transistor; output current up to 100 mA, supply voltage VCC 50 V max. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ROHM Semicon |
| Package | SOT-416 |
| 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 VI(off) | VI(off) |  |  | 0.5 | V | VCC = 5V, IO = 100μA | 2 |
| Input voltage VI(on) | VI(on) | 1.3 |  |  | V | VO = 0.3V, IO = 5mA | 2 |
| Output voltage VO(on) | VO(on) |  | 100 | 300 | mV | IO / II = 5mA / 0.25mA | 2 |
| Input current II | II |  |  | 1.8 | mA | VI = 5V | 2 |
| Output current IO(off) | IO(off) |  |  | 500 | nA | VCC = 50V, VI = 0V | 2 |
| DC current gain GI | GI | 80 |  |  | - | VO = 5V, IO = 10mA | 2 |
| Input resistance R1 | R1 | 3.29 | 4.7 | 6.11 | kΩ |  | 2 |
| Resistance ratio R2/R1 | R2/R1 | 8 | 10 | 12 | - |  | 2 |
| Supply voltage | VCC |  |  | 50 | V |  | 2 |
| Input voltage | VIN | -5 |  | 30 | V |  | 2 |
| Output current | IO |  |  | 100 | mA |  | 2 |
| Collector current | IC(MAX) |  |  | 100 | mA |  | 2 |
| Power dissipation | PD |  |  | 150 | mW | DTC143ZE; each terminal mounted on a reference land | 2 |
| Junction temperature | Tj |  |  | 150 | ℃ |  | 2 |
| Range of storage temperature | Tstg | -55 |  | 150 | ℃ |  | 2 |

## CAD (KiCad official)

- Symbol: `DTC143ZETL`
- Footprint: `Package_TO_SOT_SMD:SOT-416`
- 3D model: SOT-416, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.8 mm nominal SOT-523 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: `dtc143zetl-etched.step` / `dtc143zetl-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `dtc143zetl.step` / `dtc143zetl.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [ROHM Semicon datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588881777276694528) (12 pp, sha256 `dba6ee77938d5b82`, retrieved 2026-10-09, 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/dtc143zetl-datasheet.pdf)