ULN2003ANS Equivalent & Substitute Parts

Part Overview

The ULN2003ANS is a Power Switch/Driver integrated circuit manufactured by Texas Instruments, designed for relay and solenoid driving applications. This device features a 1:1 Darlington configuration with seven independent outputs, each capable of switching up to 500mA at a maximum load voltage of 50V. The ULN2003ANS is currently in Last Time Buy status, indicating that the original packaging configuration (Tube) is being phased out. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications requiring this functionality.

Substiute Parts

ULN2003ANS

Texas InstrumentsIn Stock: 3034ULN2003ANS Datasheet

Current PartRFQ

ULN2003ANSR

Texas InstrumentsIn Stock: 23328ULN2003ANSR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ULN2003ANS is determined by strict equivalence across the following critical parameters:

• Functional Architecture: 7-output Darlington driver configuration with 1:1 input-to-output ratio
• Electrical Performance: 500mA maximum output current per channel, 50V maximum load voltage, inverting input logic
• Package Compatibility: 16-SOIC surface mount package with identical pinout and mechanical dimensions
• Environmental & Compliance: Operating temperature range -40°C to 70°C, ROHS3 compliance, REACH unaffected status
• Series Designation: ULx200xA series membership

The ULN2003ANS differs from its substitute only in packaging format (Tube vs. Cut Tape/Digi-Reel) and product lifecycle status. All electrical and mechanical specifications remain identical.

Parameter Comparison

Engineering Selection Recommendations

The ULN2003ANSR is a direct functional equivalent to the ULN2003ANS. Both parts share identical electrical specifications, pinout, and mechanical package dimensions. The primary distinction is product lifecycle status and packaging format.

For new designs or ongoing production requiring the ULN2003ANS, the ULN2003ANSR is the recommended substitute. The ULN2003ANSR maintains Active product status with higher inventory availability (23,300 pcs vs. 2,938 pcs), ensuring supply chain continuity. Both parts maintain equivalent ROHS3 compliance and environmental certifications.

The packaging difference (Tube vs. Cut Tape/Digi-Reel) affects only procurement and handling logistics; no circuit-level modifications are required for substitution.

Frequently Asked Questions (FAQ)

Q: Can ULN2003ANSR be used as a direct replacement for ULN2003ANS in existing designs?

A: Yes. The ULN2003ANSR is electrically and mechanically identical to the ULN2003ANS. No circuit modifications, PCB layout changes, or firmware updates are required. The parts are pin-for-pin compatible with identical 16-SOIC package dimensions.

Q: What is the difference between Tube and Cut Tape/Digi-Reel packaging?

A: Tube packaging supplies components in plastic tubes for manual handling and small-quantity assembly. Cut Tape and Digi-Reel packaging are automated assembly formats. Both contain identical components; the difference is in procurement and production line integration only.

Q: Why is ULN2003ANS marked as Last Time Buy?

A: Last Time Buy status indicates that Texas Instruments is discontinuing this specific packaging configuration. The ULN2003ANSR in Cut Tape/Digi-Reel format is the active production alternative, ensuring long-term supply availability.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts deliver identical electrical performance: 7 independent 500mA Darlington outputs, 50V maximum load voltage, 1:1 input-to-output configuration, and -40°C to 70°C operating temperature range.

Q: Do both parts meet the same compliance standards?

A: Yes. Both ULN2003ANS and ULN2003ANSR are ROHS3 compliant, REACH unaffected, and carry identical environmental certifications.