ULN2004ADE4 Equivalent & Substitute Parts

Part Overview

The ULN2004ADE4 is a 7-channel NPN Darlington power switch/driver manufactured by Texas Instruments, designed for relay and solenoid driving applications. This component features a 1:1 input-to-output ratio with low-side output configuration, supporting loads up to 50V at 500mA per channel in a 16-SOIC surface mount package.

The ULN2004ADE4 is classified as Obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this driver topology.

Substiute Parts

ULN2004ADE4

Texas InstrumentsIn Stock: 1018ULN2004ADE4 Datasheet

Current PartRFQ

ULN2004AD

Texas InstrumentsIn Stock: 7975ULN2004AD Datasheet

MFR RecommendedRFQ

ULN2004ADR

Texas InstrumentsIn Stock: 80279ULN2004ADR Datasheet

MFR RecommendedRFQ

ULN2004AS16-13

Diodes IncorporatedIn Stock: 10380ULN2004AS16-13 Datasheet

DirectRFQ

ULN2001D1013TR

STMicroelectronicsIn Stock: 24841ULN2001D1013TR Datasheet

UpgradeRFQ

ULN2003D1013TR

STMicroelectronicsIn Stock: 1787225ULN2003D1013TR Datasheet

UpgradeRFQ

ULN2004D1013TR

STMicroelectronicsIn Stock: 54649ULN2004D1013TR Datasheet

UpgradeRFQ

ULQ2003D1013TR

STMicroelectronicsIn Stock: 51093ULQ2003D1013TR Datasheet

UpgradeRFQ

ULQ2004D1013TR

STMicroelectronicsIn Stock: 5396ULQ2004D1013TR Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ULN2004ADE4 is determined by the following critical parameters:

• Number of Outputs: Must be 7 channels
• Output Type: NPN or Darlington configuration
• Voltage - Load (Max): 50V minimum rating
• Current - Output (Max): 500mA minimum rating
• Ratio - Input:Output: 1:1 configuration
• Output Configuration: Low Side
• Package / Case: 16-SOIC form factor
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into three categories based on manufacturer and product status: MFR Recommended (Texas Instruments alternatives with improved availability), Direct Manufacturer (Diodes Incorporated equivalent), and Upgrade options (STMicroelectronics and alternative topologies with enhanced specifications).

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: ULN2004ADR (Texas Instruments)

The ULN2004ADR is the preferred substitute for the obsolete ULN2004ADE4. Both parts maintain identical electrical specifications (50V, 500mA, 1:1 ratio, 7-channel NPN configuration) and package form factor (16-SOIC). The ULN2004ADR holds Active product status with 80,213 units in stock, ensuring long-term supply availability. Both parts are ROHS3 Compliant and carry identical compliance certifications (REACH Unaffected, EAR99 ECCN classification).

Secondary Recommendation: ULN2004AD (Texas Instruments)

The ULN2004AD provides an alternative Texas Instruments source with identical electrical and mechanical specifications. This part is classified as Last Time Buy with 7,900 units available. Selection of this part should be coordinated with long-term supply planning due to its end-of-life status.

Alternative Manufacturer Option: ULN2004AS16-13 (Diodes Incorporated)

The ULN2004AS16-13 from Diodes Incorporated meets all core electrical requirements with identical 50V/500mA ratings and 7-channel NPN configuration. This part features an extended operating temperature range (-40°C to 105°C) compared to the original specification (-40°C to 70°C), providing enhanced thermal performance. The part is Active with 10,300 units in stock and maintains ROHS3 compliance.

Upgrade Options: STMicroelectronics Series

STMicroelectronics offers multiple compatible alternatives: ULN2004D1013TR (NPN, Active, 54,590 units), ULN2001D1013TR (NPN, Active, 24,773 units), and ULN2003D1013TR (Darlington, Active, 1,787,200 units). All maintain 50V/500mA specifications with operating temperatures of -40°C to 85°C. The ULN2003D1013TR Darlington variant offers the highest inventory availability. All STMicroelectronics parts are supplied in Cut Tape & Digi-Reel® packaging and maintain ROHS3 compliance.

High-Temperature Variants: ULQ Series (STMicroelectronics)

The ULQ2003D1013TR and ULQ2004D1013TR represent Darlington transistor array alternatives with identical electrical ratings but elevated junction temperature ratings (150°C TJ). These parts are classified as Transistors, Bipolar (BJT) rather than Power Management ICs and are suitable for applications requiring enhanced thermal performance.

Frequently Asked Questions (FAQ)

Q: Can I directly substitute ULN2004ADR for ULN2004ADE4 without circuit modifications?

A: Yes. Both parts share identical electrical specifications (50V maximum load voltage, 500mA maximum output current, 7-channel 1:1 NPN configuration) and the same 16-SOIC package form factor. No circuit modifications are required. The primary difference is product status (Active vs. Obsolete) and packaging format (Digi-Reel® vs. Tube).

Q: What is the difference between NPN and Darlington output types in the substitute options?

A: The ULN2004ADE4 uses NPN output configuration. Darlington variants (ULN2003D1013TR, ULQ2003D1013TR, ULQ2004D1013TR) employ a Darlington pair topology, which provides higher current gain but may exhibit different saturation voltage characteristics. Darlington substitutes are functionally compatible for relay and solenoid driving but should be verified for specific saturation voltage requirements in your application.

Q: Why do some substitutes have different operating temperature ranges?

A: Operating temperature specifications reflect the manufacturer's thermal design and qualification testing. The ULN2004AS16-13 (Diodes Incorporated) extends to 105°C ambient, while STMicroelectronics parts are rated to 85°C ambient. The ULQ series specifies 150°C junction temperature. Selection should match your application's thermal environment. All parts maintain identical electrical performance within their specified temperature ranges.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts carry ROHS3 Compliant certification, matching the original ULN2004ADE4. All parts are also REACH Unaffected and classified under EAR99 ECCN, maintaining identical regulatory compliance profiles.

Q: What packaging formats are available for substitutes?

A: The original ULN2004ADE4 is supplied in Tube packaging. Substitutes are available in multiple formats: ULN2004AD (Tube), ULN2004ADR (Cut Tape & Digi-Reel®), ULN2004AS16-13 (Tape & Reel), and STMicroelectronics options (Cut Tape & Digi-Reel®). Packaging selection depends on your procurement and assembly requirements.

Q: Which substitute offers the best long-term supply availability?

A: ULN2004ADR (Texas Instruments, Active status, 80,213 units) and ULN2003D1013TR (STMicroelectronics, Active status, 1,787,200 units) provide the strongest supply positions. ULN2004ADR maintains the closest electrical and thermal specification match to the original part.