AUIPS1031R Equivalent & Substitute Parts

Part Overview

The AUIPS1031R is an N-Channel power switch/driver manufactured by Infineon Technologies, designed for general-purpose low-side switching applications. This device operates at a maximum load voltage of 36V with a 3A output current rating and features integrated current limiting and over-temperature protection. The part is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support. Substitute parts maintain the same functional architecture (1:1 N-Channel configuration, TO-252-3 DPAK package, low-side output) while offering enhanced electrical performance and active product status.

Key Parameters

Parameter	AUIPS1031R
Manufacturer	Infineon Technologies
Category	Power Management (PMIC)
Switch Type	General Purpose N-Channel
Output Configuration	Low Side, 1:1 Ratio
Package	TO-252-3 DPAK (2 Leads + Tab)
Maximum Load Voltage	36V
Maximum Output Current	3A
On-Resistance (Typ)	40mOhm
Operating Temperature Range	-40°C to 150°C (TJ)
Fault Protection	Current Limiting (Fixed), Over Temperature
Product Status	Obsolete
Grade	Automotive (AEC-Q100)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution of the AUIPS1031R is based on strict electrical and mechanical compatibility criteria. All substitute parts maintain the following mandatory parameters:

Output configuration: Low-side N-Channel 1:1 switching
Package: TO-252-3 DPAK (identical footprint and pinout)
Operating temperature range: -40°C to 150°C (TJ)
Mounting type: Surface mount
Interface: On/Off non-inverting control
Fault protection: Current limiting and over-temperature protection

Substitute parts are grouped by maximum load voltage capability and output current rating. The AUIPS1031R operates at 36V maximum; substitute parts rated for 42V or 60V maximum load voltage are electrically compatible for applications within the 36V specification. Output current ratings of substitute parts range from 2A to 5A; parts rated at or above 3A are direct functional replacements, while lower-rated parts (2A, 2.4A) are suitable only for applications requiring reduced current capacity.

All substitute parts are manufactured by Infineon Technologies and maintain the same HITFET® series architecture, ensuring consistent switching characteristics and protection features.

Parameter Comparison

Part Number	Manufacturer	Max Load Voltage	Max Output Current	Rds On (Typ)	Package	Product Status	Fault Protection	Operating Temp Range
AUIPS1031R	Infineon	36V	3A	40mOhm	TO-252-3 DPAK	Obsolete	Current Limiting, Over Temp	-40°C to 150°C
BTS118DATMA1	Infineon	42V	2.4A	70mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C
BTS134DATMA1	Infineon	42V	3.5A	35mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C
BTS142DATMA1	Infineon	42V	4.6A	23mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C
BTS3028SDLATMA1	Infineon	60V	5A	28mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C
BTS3104SDLATMA1	Infineon	60V	2A	104mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C
BTS3118DATMA1	Infineon	42V	2.4A	70mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C
BTS3142DATMA1	Infineon	42V	4.6A	23mOhm	TO-252-3 DPAK	Active	Current Limiting, Over Temp, Over Voltage	-40°C to 150°C

Engineering Selection Recommendations

All substitute parts listed are active products with RoHS3 compliance and REACH unaffected status, providing long-term supply assurance compared to the obsolete AUIPS1031R. Selection criteria are based on application voltage and current requirements:

For 36V applications requiring 3A or less: BTS134DATMA1 provides direct functional replacement with improved on-resistance (35mOhm vs. 40mOhm) and enhanced over-voltage protection. BTS118DATMA1 and BTS3118DATMA1 are suitable for applications requiring 2.4A or less.

For 36V applications requiring 3A to 4.6A: BTS142DATMA1 and BTS3142DATMA1 offer superior current handling (4.6A) with lower on-resistance (23mOhm), reducing thermal dissipation and improving efficiency.

For applications with higher voltage headroom (up to 60V): BTS3028SDLATMA1 supports 5A output current with 60V maximum load voltage rating, suitable for systems requiring extended voltage margin. BTS3104SDLATMA1 is rated for 60V but limited to 2A output current.

All substitute parts maintain automotive-grade qualification through the HITFET® series architecture and identical TO-252-3 DPAK package footprint, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can BTS118DATMA1 or BTS3118DATMA1 replace AUIPS1031R in all applications?

A: These parts are electrically compatible for applications requiring 2.4A or less. Both maintain identical package, operating temperature range, and low-side switching configuration. However, applications requiring the full 3A output current of the AUIPS1031R require BTS134DATMA1 or higher-rated alternatives.

Q: What is the difference between BTS142DATMA1 and BTS3142DATMA1?

A: Both parts are electrically identical with 4.6A output current, 42V maximum load voltage, and 23mOhm on-resistance. The primary difference is packaging: BTS142DATMA1 is supplied in Tape & Reel format, while BTS3142DATMA1 is also supplied in Tape & Reel. Verify packaging requirements with your procurement specification.

Q: Is BTS3028SDLATMA1 suitable for 36V applications?

A: Yes. BTS3028SDLATMA1 is rated for 60V maximum load voltage, making it fully compatible with 36V applications. The higher voltage rating provides additional design margin without affecting performance at lower voltages. This part offers the highest current capacity (5A) among available substitutes.

Q: Why do some substitute parts have higher on-resistance than AUIPS1031R?

A: On-resistance varies with current rating and voltage class. BTS118DATMA1 and BTS3118DATMA1 (70mOhm) are rated for 2.4A and 42V, while AUIPS1031R (40mOhm) is rated for 3A and 36V. Higher-current parts like BTS142DATMA1 and BTS3142DATMA1 achieve lower on-resistance (23mOhm) through improved semiconductor design, resulting in better thermal performance.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed are RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for new designs and production.

Q: Can substitute parts be used interchangeably on the same PCB?

A: All substitute parts use identical TO-252-3 DPAK packaging with the same pinout and footprint. Direct PCB substitution is possible without layout modifications. However, verify that thermal management (copper area, via placement) is adequate for the selected part's power dissipation characteristics.

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