E-ULN2003D1013TR STMicroelectronics Integrated Circuit (Small Outline Packages) In Stock
STMicroelectronics E-ULN2003D1013TR is a 7-channel Darlington NPN transistor array rated at 50 V and 500 mA per channel, housed in a 16-pin SO package on tape and reel for stepper motor and relay driving applications.
- Manufacturer
- STMicroelectronics
- Package
- Small Outline Packages
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- E-ULN2003D1013TR Datasheet PDF
- Category
- Integrated Circuit
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 7 independent Darlington NPN transistor channels each rated 50 V / 500 mA for driving multiple loads simultaneously
- Built-in suppression diodes on all outputs protect against inductive kickback from relay coils and stepper motor windings
- 16-pin SO surface-mount tape-and-reel packaging enables high-volume automated assembly with compact PCB footprint
Applications
The E-ULN2003D1013TR is a versatile high-current driver array used to interface low-power logic signals from MCUs and shift registers to inductive loads such as stepper motor windings, relay coils, and solenoids at up to 50 V. Its 7-channel architecture lets a single IC drive a full unipolar stepper motor plus auxiliary relays in robotics, home appliances, and industrial automation panels. Surface-mount tape-and-reel delivery in the SO-16 package streamlines pick-and-place assembly in medium to high volume production runs.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many stepper motor windings can the E-ULN2003D1013TR drive simultaneously from a 5 V MCU?
The E-ULN2003D1013TR contains 7 Darlington channels, each capable of sinking up to 500 mA at 50 V. A standard 4-phase unipolar stepper motor requires 4 channels, leaving 3 channels free for relay coils or auxiliary outputs. Logic-level inputs as low as 2.7 V are sufficient to fully saturate each Darlington pair when driving 12 V motor windings.
How do the built-in flyback diodes in the E-ULN2003D1013TR protect relay driver circuits?
Each output of the E-ULN2003D1013TR includes an integrated suppression diode connected from output to COM, clamping inductive kickback pulses from relay coils and solenoids to the supply rail. Without these diodes, voltage spikes of 50 V or higher would appear across the transistor collector, potentially exceeding the 50 V breakdown rating and damaging both the driver IC and nearby components in 12 V or 24 V relay circuits.
What is the advantage of selecting the E-ULN2003D1013TR in SO-16 tape-and-reel format over a DIP version for production boards?
The SO-16 surface-mount package reduces PCB footprint by roughly 50% compared to the DIP-16 equivalent, enabling tighter board layouts in compact industrial controllers. Tape-and-reel packaging supports automated pick-and-place assembly at high throughput rates, typically 3000 to 8000 placements per hour, reducing per-unit assembly cost significantly at volumes above 500 units.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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