IPS1041LPBF Equivalent & Substitute Parts

Part Overview

The IPS1041LPBF is a Power Switch/Driver IC manufactured by Infineon Technologies, configured as a 1:1 N-Channel low-side switch in SOT-223 packaging. This device is rated for 1.95A maximum output current with an 80mOhm typical on-resistance and supports load voltages up to 28V. The part has reached obsolete product status, making equivalent and substitute parts necessary for ongoing design support and procurement.

Key Parameters

Parameter	IPS1041LPBF
Manufacturer	Infineon Technologies
Category	Power Management (PMIC)
Switch Type	General Purpose N-Channel Low Side
Output Configuration	1:1 Ratio, Low Side
Voltage - Load (Max)	28V
Current - Output (Max)	1.95A
Rds On (Typ)	80mOhm
Operating Temperature	-40°C ~ 150°C (TJ)
Package / Case	TO-261-4, TO-261AA (SOT-223)
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the IPS1041LPBF is determined by the following critical parameters:

Output Configuration: Must be 1:1 ratio, low-side N-Channel switch
Interface Type: On/Off control (Non-Inverting input)
Package Compatibility: SOT-223 form factor (TO-261-4, TO-261AA)
Operating Temperature Range: -40°C ~ 150°C (TJ)
Mounting Type: Surface Mount
Load Voltage Tolerance: Substitute must support minimum 28V load voltage
Output Current: Substitute must support minimum 1.95A output current

All substitute parts listed meet these core substitution criteria. Differences in maximum ratings, on-resistance, and additional protection features represent performance enhancements or variations that do not prevent functional substitution.

Parameter Comparison

Parameter	IPS1041LPBF	BSP78HUMA1	BTS3118NHUMA1	BTS3134NHUMA1	BSP75GTA
Manufacturer	Infineon	Infineon	Infineon	Infineon	Diodes Inc.
Switch Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Output Configuration	1:1 Low Side	1:1 Low Side	1:1 Low Side	1:1 Low Side	1:1 Low Side
Voltage - Load (Max)	28V	42V	42V	42V	60V
Current - Output (Max)	1.95A	3A	2.17A	3A	1.6A
Rds On (Typ)	80mOhm	35mOhm	70mOhm	35mOhm	550mOhm
Operating Temperature	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C	-40°C ~ 150°C
Package / Case	TO-261-4, TO-261AA	PG-SOT223-4	PG-SOT223-4	PG-SOT223-4	SOT-223-3
Product Status	Obsolete	Active	Active	Active	Active
Fault Protection	Current Limiting (Fixed), Over Temperature	Current Limiting (Fixed), Over Temperature, Over Voltage	Current Limiting (Fixed), Over Temperature, Over Voltage	Current Limiting (Fixed), Over Temperature, Over Voltage	Current Limiting (Fixed), Over Temperature, Over Voltage

Engineering Selection Recommendations

Primary Substitutes (Infineon HITFET® Series)

BSP78HUMA1 and BTS3134NHUMA1 are functionally equivalent to IPS1041LPBF with enhanced performance characteristics. Both devices are active products with ROHS3 compliance and provide higher current ratings (3A) and lower on-resistance (35mOhm). These parts are recommended for new designs and ongoing production where Infineon product continuity is preferred.

BTS3118NHUMA1 offers an intermediate option with 2.17A current rating and 70mOhm on-resistance, maintaining compatibility with the original specification while providing over-voltage protection not present in the IPS1041LPBF.

Alternative Substitute (Diodes Incorporated INTELLIFET® Series)

BSP75GTA from Diodes Incorporated is an active product with ROHS3 compliance and the highest load voltage rating (60V). This part supports the required 1.95A minimum current specification but features higher on-resistance (550mOhm). Selection of this part is appropriate when Diodes Incorporated supply chain or cost considerations are primary factors.

All substitute parts maintain SOT-223 package compatibility, identical operating temperature range, and surface mount configuration. Product status transition from obsolete to active ensures long-term availability and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can BSP78HUMA1 directly replace IPS1041LPBF in existing designs?

A: Yes. BSP78HUMA1 maintains identical output configuration (1:1 low-side N-Channel), operating temperature range (-40°C ~ 150°C), and SOT-223 package form factor. The higher current rating (3A vs. 1.95A) and lower on-resistance (35mOhm vs. 80mOhm) represent performance improvements. Pin-to-pin compatibility must be verified against specific PCB layout and schematic requirements.

Q: What is the difference between BTS3118NHUMA1 and BTS3134NHUMA1?

A: Both parts are Infineon HITFET® series devices with identical load voltage (42V) and operating temperature specifications. BTS3134NHUMA1 provides 3A output current and 35mOhm on-resistance, while BTS3118NHUMA1 provides 2.17A output current and 70mOhm on-resistance. Selection depends on application current requirements and thermal dissipation constraints.

Q: Why does BSP75GTA have higher on-resistance than other substitutes?

A: BSP75GTA is manufactured by Diodes Incorporated using the INTELLIFET® technology platform, which differs from Infineon's HITFET® architecture. The 550mOhm on-resistance is a characteristic of this device family. Thermal performance and power dissipation must be evaluated for applications sensitive to resistive losses.

Q: Are all substitute parts RoHS compliant?

A: BSP78HUMA1, BTS3118NHUMA1, and BTS3134NHUMA1 are ROHS3 compliant. BSP75GTA is also ROHS3 compliant. The original IPS1041LPBF product status does not include RoHS certification data.

Q: What packaging formats are available for substitute parts?

A: BSP78HUMA1 is available in Cut Tape (CT) & Digi-Reel® packaging. BTS3118NHUMA1 and BTS3134NHUMA1 are available in Tape & Reel (TR) packaging. BSP75GTA is available in Cut Tape (CT) & Digi-Reel® packaging. Packaging selection affects procurement and assembly processes.

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