ULN2003APW Equivalent & Substitute Parts

Part Overview

The ULN2003APW is a 7-channel NPN Darlington array power switch/driver manufactured by Texas Instruments, designed for relay and solenoid driving applications. This component operates at a maximum load voltage of 50V with 500mA output current per channel and features low-side output configuration with parallel interface control.

The ULN2003APW is classified as Last Time Buy, indicating discontinued production. Identifying equivalent substitute parts is necessary to ensure continued component availability for new designs and ongoing production requirements.

Substiute Parts

ULN2003APW

Texas InstrumentsIn Stock: 32797ULN2003APW Datasheet

Current PartRFQ

ULN2003APWR

Texas InstrumentsIn Stock: 152228ULN2003APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ULN2003APW is determined by strict equivalence across the following critical parameters:

• Number of Outputs: 7 channels
• Output Type: Darlington configuration
• Voltage - Load (Max): 50V
• Current - Output (Max): 500mA
• Output Configuration: Low Side
• Input Type: Inverting
• Ratio - Input:Output: 1:1
• Interface: Parallel
• Package / Case: 16-TSSOP
• Operating Temperature Range: -40°C ~ 70°C (TA)
• RoHS Compliance: ROHS3 Compliant

The ULN2003APWR qualifies as a direct substitute based on identical electrical specifications, package configuration, and compliance certifications. The primary distinction is packaging format: ULN2003APW is supplied in Tube packaging, while ULN2003APWR is supplied in Cut Tape (CT) & Digi-Reel® format.

Parameter Comparison

Engineering Selection Recommendations

The ULN2003APWR is the direct functional equivalent to the ULN2003APW. Both components share identical electrical characteristics, thermal operating range, and compliance certifications (ROHS3, REACH Unaffected, EAR99 classification).

The ULN2003APW is designated Last Time Buy, indicating end-of-life status. The ULN2003APWR maintains Active product status with significantly higher inventory availability (152,150 pcs vs. 32,720 pcs), making it the preferred selection for new designs and ongoing production.

Selection between these parts is determined by packaging requirements: Tube format for the ULN2003APW or Cut Tape & Digi-Reel® format for the ULN2003APWR. Both formats are compatible with standard surface-mount assembly processes.

Frequently Asked Questions (FAQ)

Q: Can ULN2003APWR be used as a direct replacement for ULN2003APW in existing designs?

A: Yes. Both parts are electrically identical with matching pin configurations, voltage ratings (50V maximum load), current capacity (500mA per channel), and operating temperature range (-40°C to 70°C). The 16-TSSOP package footprint is identical, enabling direct PCB substitution.

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 applications. Cut Tape & Digi-Reel® format provides components on continuous tape wound on reels, optimized for automated pick-and-place assembly equipment. Both formats contain identical components with no electrical or functional differences.

Q: Why is ULN2003APW classified as Last Time Buy?

A: Last Time Buy designation indicates the manufacturer has discontinued production of this specific part number variant. The ULN2003APWR remains in active production as the current equivalent offering.

Q: Are there any compliance or certification differences between these parts?

A: No. Both ULN2003APW and ULN2003APWR carry identical certifications: ROHS3 Compliant, REACH Unaffected, and EAR99 classification. Moisture Sensitivity Level (MSL) is 1 (Unlimited) for both variants.

Q: What are the key electrical parameters that define substitution compatibility?

A: Substitution compatibility is determined by: 7-channel configuration, Darlington output type, 50V maximum load voltage, 500mA maximum output current, low-side output configuration, inverting input type, 1:1 input-to-output ratio, parallel interface, and 16-TSSOP package format.