component
ULN2001A
Public Made by Adomby adom
STMicroelectronics Darlington Transistor Arrays, DIP-16. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownULN2001A
STMicroelectronics · Darlington Transistor Arrays · DIP-16
ULN2001A from STMicroelectronics, in a DIP-16. 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 | IN1 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 1 that drives the base of output driver 1 (input current up to ~1.45 mA depending on version). |
| 2 | IN2 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 2 that drives the base of output driver 2. |
| 3 | IN3 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 3 that drives the base of output driver 3. |
| 4 | IN4 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 4 that drives the base of output driver 4. |
| 5 | IN5 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 5 that drives the base of output driver 5. |
| 6 | IN6 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 6 that drives the base of output driver 6. |
| 7 | IN7 | input | TTL/CMOS/PMOS/DTL-compatible Darlington input 7 that drives the base of output driver 7. |
| 8 | GND | power_in | Common emitter/ground reference for all seven Darlington drivers. |
| 9 | COM | passive | Common cathode node of the seven integrated free-wheeling suppression diodes, tied to the supply rail when driving inductive loads to clamp flyback voltage (diode leakage 50 µA, VF = 1.7-2 V at IF = 350 mA). |
| 10 | OUT7 | output | Open-collector Darlington output 7, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
| 11 | OUT6 | output | Open-collector Darlington output 6, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
| 12 | OUT5 | output | Open-collector Darlington output 5, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
| 13 | OUT4 | output | Open-collector Darlington output 4, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
| 14 | OUT3 | output | Open-collector Darlington output 3, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
| 15 | OUT2 | output | Open-collector Darlington output 2, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
| 16 | OUT1 | output | Open-collector Darlington output 1, rated 500 mA continuous (600 mA peak) at up to 50 V, with internal flyback diode to pin 9. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | DIP-16 |
| Category | Transistors/Thyristors |
| Pins | 16 |
CAD (KiCad official)
- Symbol:
ULN2001A - Footprint:
Package_DIP:DIP-16_W7.62mm - 3D model: DIP-16 (KiCad packages3D, STEP)
- 3D model files:
uln2001a-etched.step/uln2001a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);uln2001a.step/uln2001a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (17 pp, sha256
825f48d8eabe3743, retrieved 2026-09-29, 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).