ULN2003AIPWR Equivalent & Substitute Parts

Part Overview

The ULN2003AIPWR is an active power management integrated circuit manufactured by Texas Instruments, classified as a Power Switch/Driver with 1:1 Darlington configuration. This component functions as a relay and solenoid driver with seven independent outputs, each capable of handling 500mA at maximum load voltages up to 50V. The device operates across an industrial temperature range of -40°C to 105°C and is available in a 16-TSSOP surface mount package. With 35,100 units currently in stock and active product status, the ULN2003AIPWR remains a standard component in power switching applications. Substitute parts are identified when original inventory becomes unavailable or when design requirements necessitate alternative output configurations while maintaining functional equivalence.

Substiute Parts

ULN2003AIPWR

Texas InstrumentsIn Stock: 35133ULN2003AIPWR Datasheet

Current PartRFQ

TBD62003AFNG,EL

Toshiba Semiconductor and StorageIn Stock: 24045TBD62003AFNG,EL Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ULN2003AIPWR is determined by strict equivalence across the following critical parameters: seven independent outputs, 1:1 input-to-output ratio, low-side output configuration, 50V maximum load voltage, 500mA maximum output current, inverting input logic, surface mount technology, and ROHS3 compliance. The substitute part must maintain functional compatibility within these electrical and mechanical boundaries. Output type variation (Darlington versus N-Channel) is permitted when all other parameters remain equivalent, as both configurations deliver identical electrical performance at the specified voltage and current ratings. Package form factor equivalence is required; however, minor dimensional variations within the same package family (TSSOP versus SSOP/LSSOP) are acceptable provided pinout compatibility is maintained.

Parameter Comparison

Engineering Selection Recommendations

The TBD62003AFNG,EL manufactured by Toshiba Semiconductor and Storage qualifies as a direct substitute for the ULN2003AIPWR based on electrical parameter equivalence and compliance certification alignment. Both components maintain ROHS3 compliance and active product status, ensuring long-term availability and regulatory consistency. The primary consideration for selection is operating temperature range: the ULN2003AIPWR supports -40°C to 105°C, while the TBD62003AFNG,EL operates within -40°C to 85°C. Applications requiring operation above 85°C ambient temperature must retain the ULN2003AIPWR. For applications within the overlapping temperature range (-40°C to 85°C), either component delivers equivalent performance. Package compatibility is confirmed; both devices utilize 16-pin surface mount configurations with identical 4.40mm width specifications, permitting direct board-level substitution without layout modification.

Frequently Asked Questions (FAQ)

Q: Can the TBD62003AFNG,EL replace the ULN2003AIPWR in all applications?

A: Substitution is valid for applications operating within -40°C to 85°C ambient temperature. Applications requiring operation above 85°C must use the ULN2003AIPWR, which is rated to 105°C.

Q: What is the functional difference between Darlington and N-Channel output types?

A: Both output types deliver equivalent electrical performance at the specified 50V maximum load voltage and 500mA maximum output current. The internal transistor architecture differs, but external circuit behavior remains identical for the parameters provided.

Q: Are the package dimensions identical between TSSOP and LSSOP variants?

A: Both packages share identical width (0.173", 4.40mm) and pin count (16). Minor pitch variations exist between TSSOP and LSSOP families, but pinout compatibility is maintained for direct substitution on standard PCB layouts.

Q: What inventory status should influence component selection?

A: The ULN2003AIPWR maintains 35,100 units in stock, while the TBD62003AFNG,EL has 24,030 units available. Selection should prioritize the ULN2003AIPWR for applications without temperature constraints above 85°C to ensure supply continuity.

Q: Are both components suitable for relay and solenoid driver applications?

A: Yes. Both the ULN2003AIPWR and TBD62003AFNG,EL are classified as power switch/drivers with identical output configuration (low-side, 1:1 ratio, inverting input), making them functionally equivalent for relay and solenoid driving circuits.