ULN2003ADR Equivalent & Substitute Parts

Part Overview

The ULN2003ADR is a Power Switch/Driver IC manufactured by Texas Instruments, configured as a 7-channel NPN Darlington array with 1:1 input-to-output ratio in a 16-SOIC surface mount package. This device functions as a relay and solenoid driver for low-side switching applications. The part is Active status with full RoHS3 compliance and unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and functional equivalence within the ULx200xA series.

Substiute Parts

ULN2003ADR

Texas InstrumentsIn Stock: 1005240ULN2003ADR Datasheet

Current PartRFQ

ULN2002D1013TR

STMicroelectronicsIn Stock: 72112ULN2002D1013TR Datasheet

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ULN2003ADR2G

onsemiIn Stock: 605441ULN2003ADR2G Datasheet

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ULN2001D1013TR

STMicroelectronicsIn Stock: 24841ULN2001D1013TR Datasheet

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ULN2003D1013TR

STMicroelectronicsIn Stock: 1787225ULN2003D1013TR Datasheet

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ULN2004AS16-13

Diodes IncorporatedIn Stock: 10380ULN2004AS16-13 Datasheet

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ULN2004D1013TR

STMicroelectronicsIn Stock: 54649ULN2004D1013TR Datasheet

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ULQ2003ADR2G

onsemiIn Stock: 32887ULQ2003ADR2G Datasheet

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ULQ2003D1013TR

STMicroelectronicsIn Stock: 51093ULQ2003D1013TR Datasheet

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ULQ2003D1013TRY

STMicroelectronicsIn Stock: 106859ULQ2003D1013TRY Datasheet

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ULQ2004D1013TR

STMicroelectronicsIn Stock: 5396ULQ2004D1013TR Datasheet

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TBD62003AFWG,EL

Toshiba Semiconductor and StorageIn Stock: 797TBD62003AFWG,EL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ULN2003ADR is determined by the following critical parameters:

Mandatory Matching Parameters:

• Number of Outputs: 7 channels
• Ratio - Input:Output: 1:1
• Output Configuration: Low Side
• Voltage - Load (Max): 50V
• Current - Output (Max): 500mA
• Interface: Parallel
• Input Type: Inverting
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.154", 3.90mm Width)
• RoHS Status: ROHS3 Compliant

Allowable Variations:

• Output Type: Darlington or NPN (both acceptable for relay/solenoid driver function)
• Operating Temperature Range: May extend beyond -40°C ~ 70°C (wider ranges are acceptable)
• Manufacturer: Multiple qualified manufacturers within ULx200xA series
• Packaging Format: Cut Tape (CT) & Digi-Reel® or Tape & Reel (TR) acceptable
• Moisture Sensitivity Level: MSL 1 or MSL 3 acceptable

Substitutes are grouped by output type (Darlington vs. NPN) and manufacturer, with direct equivalents listed first, followed by upgrades offering extended temperature ranges or enhanced specifications.

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalents (Identical Specifications): ULN2003ADR2G from onsemi is a direct equivalent with matching Darlington output type, identical temperature range (-40°C ~ 70°C), and equivalent package configuration. Both parts maintain Active product status and ROHS3 compliance.

Extended Temperature Range Substitutes: STMicroelectronics ULN2003D1013TR provides Darlington output with extended operating temperature to -40°C ~ 85°C, suitable for applications requiring wider thermal operating margins. ULN2002D1013TR and ULN2001D1013TR offer NPN output variants with the same extended temperature range.

High-Temperature Variants: ULQ2003D1013TR, ULQ2003D1013TRY, and ULQ2004D1013TR from STMicroelectronics extend junction temperature capability to 150°C (TJ), appropriate for high-temperature environments. ULQ2003D1013TRY includes automotive qualification (AEC-Q100) with MSL 3 rating.

Extended Temperature with NPN Output: ULN2004AS16-13 from Diodes Incorporated provides NPN output with the widest operating temperature range (-40°C ~ 105°C) and maintains ROHS3 compliance.

All substitute parts maintain the critical electrical specifications: 7-channel configuration, 1:1 ratio, 50V load voltage, 500mA output current, low-side switching, and 16-SOIC package footprint. Selection should be based on required operating temperature range, output type preference (Darlington vs. NPN), and manufacturer availability.

Frequently Asked Questions (FAQ)

Q: Can I substitute ULN2003ADR with ULN2002D1013TR? A: Yes. Both parts share identical electrical specifications (7 outputs, 50V, 500mA, 1:1 ratio, low-side configuration, 16-SOIC package). The primary difference is output type: ULN2003ADR uses Darlington output while ULN2002D1013TR uses NPN output. ULN2002D1013TR also provides extended operating temperature (-40°C ~ 85°C vs. -40°C ~ 70°C).

Q: What is the difference between Darlington and NPN output types? A: Both output types function as relay and solenoid drivers with identical voltage and current ratings. Darlington outputs (ULN2003ADR, ULN2003D1013TR) and NPN outputs (ULN2002D1013TR, ULN2001D1013TR) are functionally interchangeable for this application category. Selection depends on circuit design requirements and manufacturer preference.

Q: Are ULQ2003 series parts compatible with ULN2003ADR? A: Yes. ULQ2003ADR2G, ULQ2003D1013TR, and ULQ2003D1013TRY maintain all critical electrical parameters (7 outputs, 50V, 500mA, 1:1 ratio, 16-SOIC package). ULQ variants offer extended junction temperature capability (150°C TJ) and are suitable for high-temperature applications. ULQ2003D1013TRY includes automotive qualification.

Q: Does package format (Cut Tape vs. Tape & Reel) affect substitution? A: No. Both Cut Tape (CT) & Digi-Reel® and Tape & Reel (TR) formats are acceptable substitutes. The physical package case (16-SOIC) remains identical. Format selection depends on procurement and assembly requirements.

Q: Can I use ULN2004 series parts as substitutes? A: Yes. ULN2004D1013TR and ULN2004AS16-13 are functionally equivalent with identical electrical specifications. ULN2004AS16-13 from Diodes Incorporated offers the widest operating temperature range (-40°C ~ 105°C).

Q: What is the significance of MSL (Moisture Sensitivity Level) differences? A: ULN2003ADR carries MSL 1 (Unlimited), while ULQ2003D1013TRY carries MSL 3 (168 Hours). Both ratings are acceptable for substitution. MSL 3 requires controlled storage and handling within 168 hours of package opening. Selection depends on storage and assembly process requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts maintain ROHS3 compliance, matching the original ULN2003ADR specification.