AUIPS2051L Equivalent & Substitute Parts

Part Overview

The AUIPS2051L is a Power Switch/Driver IC manufactured by Infineon Technologies, designed as a 1:1 N-Channel low-side switch with 900mA output capability in SOT-223 packaging. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across automotive temperature ranges (-40°C to 150°C) and includes integrated current limiting and over-temperature protection.

Substiute Parts

AUIPS2051L

Infineon TechnologiesIn Stock: 1720AUIPS2051L Datasheet

Current PartRFQ

BTS3110NHUMA1

Infineon TechnologiesIn Stock: 2089BTS3110NHUMA1 Datasheet

MFR RecommendedRFQ

BTS3118NHUMA1

Infineon TechnologiesIn Stock: 12880BTS3118NHUMA1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AUIPS2051L is determined by the following critical parameters:

• Output Configuration: Low-side N-Channel switch with 1:1 ratio
• Package Compatibility: SOT-223 (TO-261-4, TO-261AA)
• Interface Type: On/Off control, Non-Inverting input
• Fault Protection: Current limiting and over-temperature protection
• Operating Temperature Range: -40°C to 150°C
• Mounting Type: Surface Mount

The identified substitute parts (BTS3110NHUMA1 and BTS3118NHUMA1) maintain identical output configuration, packaging, and interface characteristics. Both are manufactured by Infineon Technologies and share the same thermal operating range. The primary differences lie in maximum load voltage (42V vs. 60V), output current capability, and on-resistance specifications. These differences establish distinct application suitability based on circuit requirements.

Parameter Comparison

Engineering Selection Recommendations

BTS3110NHUMA1 is suitable for applications where the load voltage does not exceed 42V and output current requirements are between 900mA and 1.4A. This part is active in production with ROHS3 compliance and includes enhanced over-voltage protection compared to the original AUIPS2051L. The reduced on-resistance (150mOhm) provides improved thermal efficiency.

BTS3118NHUMA1 is the preferred substitute for designs requiring maximum current handling capability (2.17A) within the 42V load voltage constraint. This part offers the lowest on-resistance (70mOhm) among available substitutes, resulting in minimal power dissipation. Both substitute parts are AEC-Q100 qualified and maintain automotive-grade reliability standards.

Critical Limitation: Both substitute parts are rated for maximum 42V load voltage, compared to the original 60V specification. Applications requiring load voltages above 42V cannot use these substitutes without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can BTS3110NHUMA1 or BTS3118NHUMA1 be used as direct pin-for-pin replacements for AUIPS2051L?

A: Yes, both substitute parts share identical SOT-223 packaging (TO-261-4, TO-261AA) and pin configuration. No PCB layout modifications are required for physical substitution.

Q: What is the primary difference between BTS3110NHUMA1 and BTS3118NHUMA1?

A: Both parts maintain identical electrical specifications except for output current rating and on-resistance. BTS3118NHUMA1 provides 2.17A maximum output current with 70mOhm on-resistance, while BTS3110NHUMA1 provides 1.4A with 150mOhm. Selection depends on circuit current requirements and thermal dissipation constraints.

Q: Why is the maximum load voltage reduced from 60V to 42V in the substitute parts?

A: The substitute parts represent a different product line within Infineon's HITFET® series, optimized for lower voltage applications with improved current handling and reduced on-resistance. Applications exceeding 42V load voltage require alternative component selection outside this substitute group.

Q: Are the substitute parts compliant with automotive standards?

A: Both BTS3110NHUMA1 and BTS3118NHUMA1 are ROHS3 compliant and maintain automotive-grade qualification. The original AUIPS2051L carries AEC-Q100 qualification; compliance documentation for substitute parts should be verified against specific automotive program requirements.

Q: What additional protection features do the substitute parts provide?

A: Both substitute parts include over-voltage protection in addition to the current limiting and over-temperature protection present in the original AUIPS2051L. This enhanced protection may require circuit evaluation to ensure compatibility with existing control logic.