AUIPS1041R Equivalent & Substitute Parts

Part Overview

The AUIPS1041R is an N-Channel power switch manufactured by Infineon Technologies, designed for general-purpose switching applications in automotive-grade systems. This device operates as a 1:1 low-side driver with a maximum output current of 1.5A and an on-resistance of 80mOhm typical. 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 topology while offering improved electrical performance characteristics and active product status.

Key Parameters

Parameter	Value
Manufacturer Part Number	AUIPS1041R
Manufacturer	Infineon Technologies
Category	Power Management (PMIC)
Switch Type	General Purpose N-Channel
Output Configuration	Low Side, 1:1 Ratio
Voltage - Load	6V ~ 28V
Current - Output (Max)	1.5A
Rds On (Typ)	80mOhm
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Product Status	Obsolete
Grade	Automotive
Qualification	AEC-Q100

Substitute Part Grouping Explanation

Substitution of the AUIPS1041R is determined by the following critical parameters:

Electrical Compatibility Criteria:

Output configuration: Low side, 1:1 ratio (non-inverting input)
Output type: N-Channel
Interface: On/Off control
Fault protection: Current limiting and over-temperature protection
Operating temperature range: -40°C ~ 150°C (TJ)

Mechanical Compatibility Criteria:

Package type: TO-252-3 DPAK (2 Leads + Tab)
Mounting type: Surface mount

Performance Considerations: Substitute parts are grouped by maximum load voltage capability and output current rating. The AUIPS1041R operates within 6V ~ 28V load voltage range. Substitute parts with higher voltage ratings (42V or 60V maximum) are electrically compatible as they can operate within the lower voltage range of the original part. Output current ratings of substitute parts range from 1.5A to 5A; parts with equal or higher current ratings provide direct substitution capability.

Parameter Comparison

Part Number	Manufacturer	Current (Max)	Voltage - Load (Max)	Rds On (Typ)	Product Status	Package
AUIPS1041R	Infineon	1.5A	28V	80mOhm	Obsolete	TO-252-3 DPAK
BTS118DATMA1	Infineon	2.4A	42V	70mOhm	Active	TO-252-3 DPAK
BTS134DATMA1	Infineon	3.5A	42V	35mOhm	Active	TO-252-3 DPAK
BTS142DATMA1	Infineon	4.6A	42V	23mOhm	Active	TO-252-3 DPAK
BTS3028SDLATMA1	Infineon	5A	60V	28mOhm	Active	TO-252-3 DPAK
BTS3104SDLATMA1	Infineon	2A	60V	104mOhm	Active	TO-252-3 DPAK
BTS3118DATMA1	Infineon	2.4A	42V	70mOhm	Active	TO-252-3 DPAK
BTS3142DATMA1	Infineon	4.6A	42V	23mOhm	Active	TO-252-3 DPAK
VND1NV04-E	STMicroelectronics	1.7A	36V	250mOhm (Max)	Active	TO-252-3 DPAK

Engineering Selection Recommendations

Primary Substitutes (Infineon HITFET® Series): BTS118DATMA1, BTS3118DATMA1, BTS134DATMA1, BTS142DATMA1, BTS3028SDLATMA1, and BTS3104SDLATMA1 are all active products from Infineon Technologies with AEC-Q100 automotive qualification equivalent to the original part. These devices maintain the same package footprint (TO-252-3 DPAK) and low-side N-channel topology. All Infineon substitutes feature enhanced fault protection including over-voltage detection in addition to current limiting and over-temperature protection. RoHS3 compliance is provided across all active Infineon alternatives.

Current Rating Selection: For applications requiring 1.5A or less, BTS3104SDLATMA1 (2A rated) or BTS118DATMA1/BTS3118DATMA1 (2.4A rated) provide direct current capability with improved on-resistance characteristics. For higher current demands, BTS134DATMA1 (3.5A), BTS142DATMA1 (4.6A), or BTS3028SDLATMA1 (5A) offer proportionally lower on-resistance values.

Voltage Rating Considerations: All substitute parts support the original 6V ~ 28V load voltage range. Infineon parts rated for 42V or 60V maximum load voltage provide additional design margin for transient voltage conditions. The BTS3028SDLATMA1 with 60V maximum rating offers the highest voltage headroom.

Alternative Manufacturer Option: VND1NV04-E from STMicroelectronics (OMNIFET II™/VIPower™ series) is an active product with automotive-grade qualification. This part provides 1.7A output current and 36V maximum load voltage, suitable for direct replacement in applications not exceeding these ratings. Note that VND1NV04-E specifies maximum on-resistance of 250mOhm, which is higher than the AUIPS1041R typical value of 80mOhm.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with higher current rating than the AUIPS1041R? A: Yes. A substitute part with equal or higher maximum output current rating is electrically compatible. Higher current ratings indicate the device can safely handle the 1.5A maximum current of the original part. On-resistance typically improves with higher current ratings, providing better thermal performance.

Q: Are all substitute parts in the same package? A: Yes. All listed substitute parts use the TO-252-3 DPAK package with identical pinout (2 leads plus tab). PCB layout and footprint remain unchanged, enabling direct board-level substitution without redesign.

Q: What is the difference between BTS118DATMA1 and BTS3118DATMA1? A: Both parts are rated for 2.4A output current and 42V maximum load voltage with 70mOhm typical on-resistance. BTS118DATMA1 is supplied in Cut Tape (CT) & Digi-Reel® packaging, while BTS3118DATMA1 is supplied in Tape & Reel (TR) packaging. Electrical specifications are identical.

Q: Can I use VND1NV04-E as a substitute? A: VND1NV04-E from STMicroelectronics is functionally compatible for applications operating at 1.7A or less and 36V or less load voltage. However, its maximum on-resistance specification of 250mOhm is significantly higher than the AUIPS1041R typical value of 80mOhm, resulting in higher power dissipation. Thermal analysis is required before selection.

Q: Do all substitute parts have automotive qualification? A: All Infineon substitute parts carry AEC-Q100 automotive qualification equivalent to the original AUIPS1041R. VND1NV04-E is also automotive-grade qualified. All parts are suitable for automotive applications.

Q: What is the difference between 42V and 60V rated parts? A: Maximum load voltage rating indicates the highest voltage the device can safely switch. Parts rated for 60V (BTS3028SDLATMA1, BTS3104SDLATMA1) provide additional voltage margin compared to 42V-rated parts. For applications operating within 6V ~ 28V range, both are suitable; 60V-rated parts offer greater design margin for transient overvoltage conditions.

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