Key Selection Information
| Selection Parameter | Confirmed Information |
|---|---|
| Channels | 7 NPN Darlington pairs |
| Collector Voltage | 50 V |
| Current | 500 mA single-output class |
| Input Resistors | 2.7 kΩ per channel |
| Input Logic | TTL and 5-V CMOS-oriented |
| Clamp | Integrated common-cathode diodes for inductive loads |
| Grade | Standard ULN2003A order-code grade |
| Exact Package / Packing | TSSOP (PW), 16 pins; 2000-piece large reel; marking UN2003A |
Product Overview
ULN2003APWR is the standard-grade seven-channel Darlington driver in compact TSSOP-16. It is a long-established solution for converting logic-level commands into low-side relay, lamp and coil drive.
The 2.7-kΩ input resistors distinguish the ULN2003A input interface from ULN2004A, whose larger input resistors target higher-voltage CMOS drive.
This standard APWR order code should not be described with the extended AI temperature grade simply because ULN2003AIPWR shares the same package and core function.
For related devices, see HKEQGOO’s Bipolar Transistor Arrays category.
Technical Specifications
| Parameter | Verified Information |
|---|---|
| Manufacturer | Texas Instruments |
| Exact MPN | ULN2003APWR |
| Channels | 7 NPN Darlington pairs |
| Collector Voltage | 50 V |
| Current | 500 mA single-output class |
| Input Resistors | 2.7 kΩ per channel |
| Input Logic | TTL and 5-V CMOS-oriented |
| Clamp | Integrated common-cathode diodes for inductive loads |
| Grade | Standard ULN2003A order-code grade |
| Exact Package / Packing | TSSOP (PW), 16 pins; 2000-piece large reel; marking UN2003A |
| Manufacturer Status | Active / Production |
| Part Marking | UN2003A |
Functional Highlights
TTL/5-V CMOS input network is built in
No external base resistor is normally needed when driven from the intended logic family.
Seven clamp-equipped outputs suit relay and stepper banks
The integrated diode network simplifies multi-coil wiring and protects the Darlington collectors from normal inductive flyback.
Design Considerations
- Match input logic voltage/current to the 2.7-kΩ ULN2003A network.
- Use the exact standard-grade temperature limits for qualification rather than AI data.
- Check VCE(sat) loss and package heat with multiple energized loads.
Product Status and Exact Order Code
Manufacturer status: Active / Production
Texas Instruments lists ULN2003APWR as Active / Production; TSSOP (PW), 16 pins; 2000-piece large tape and reel; marking UN2003A.
Related Engineering Resources
Quality & Verification Support
Third-party inspection or testing can be arranged according to customer requirements. Testing fees are borne by the buyer. Additional verification requirements can be discussed before shipment. After an order is placed, physical product, label, packaging, and Date Code photos may be provided where appropriate.
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