# ULN2003AN

**XBLW** · Darlington Transistor Arrays · DIP-16

ULN2003AN from XBLW, in a DIP-16. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | 1B | input | Input 1 - base of Darlington pair 1, TTL/CMOS compatible logic input (VI up to 30 V absolute max, VIN(ON) typ 2.5 V). |
| 2 | 2B | input | Input 2 - base of Darlington pair 2, TTL/CMOS compatible logic input. |
| 3 | 3B | input | Input 3 - base of Darlington pair 3, TTL/CMOS compatible logic input. |
| 4 | 4B | input | Input 4 - base of Darlington pair 4, TTL/CMOS compatible logic input. |
| 5 | 5B | input | Input 5 - base of Darlington pair 5, TTL/CMOS compatible logic input. |
| 6 | 6B | input | Input 6 - base of Darlington pair 6, TTL/CMOS compatible logic input. |
| 7 | 7B | input | Input 7 - base of Darlington pair 7, TTL/CMOS compatible logic input. |
| 8 | E | power_in | Ground - common emitter return for all seven Darlington pairs. Connect to system ground. |
| 9 | COM | power_in | Common cathode of the seven internal free-wheeling clamp diodes. Tie to the positive supply of the inductive load (e.g. relay/motor coil supply, up to 60 V) so the diodes can absorb flyback energy. |
| 10 | 7C | output | Output 7 - open-collector Darlington output, sinks up to 500 mA continuous (600 mA peak), VCE up to 60 V. |
| 11 | 6C | output | Output 6 - open-collector Darlington output, sinks up to 500 mA continuous, VCE up to 60 V. |
| 12 | 5C | output | Output 5 - open-collector Darlington output, sinks up to 500 mA continuous, VCE up to 60 V. |
| 13 | 4C | output | Output 4 - open-collector Darlington output, sinks up to 500 mA continuous, VCE up to 60 V. |
| 14 | 3C | output | Output 3 - open-collector Darlington output, sinks up to 500 mA continuous, VCE up to 60 V. |
| 15 | 2C | output | Output 2 - open-collector Darlington output, sinks up to 500 mA continuous, VCE up to 60 V. |
| 16 | 1C | output | Output 1 - open-collector Darlington output, sinks up to 500 mA continuous, VCE up to 60 V. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | XBLW |
| Package | DIP-16 |
| Category | Transistors/Thyristors |
| Pins | 16 |

## Ordering variants

Same part, different packaging or reel option.

- `ULN2003ANALN`
- `ULN2003AN`
- `ULN2003ANALDTR`
- `ULN2003ANADTR`

## CAD (KiCad official)

- Symbol: `ULN2003AN`
- Footprint: `Package_DIP:DIP-16_W7.62mm`
- 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files: `uln2003an-etched.step` / `uln2003an-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uln2003an.step` / `uln2003an.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [XBLW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8563440617087647744) (11 pp, sha256 `4664a1830f57e6c2`, retrieved 2026-08-17, tier: lcsc)
- **Extractor:** `ds2sf` (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/uln2003an-datasheet.pdf)