IPS1021STRLPBF Equivalent & Substitute Parts

Part Overview

The IPS1021STRLPBF is a Power Switch/Driver IC manufactured by Infineon Technologies, classified as a general-purpose N-Channel low-side switch in the Power Management (PMIC) category. This device operates as a 1:1 power switch with a maximum load voltage of 28V and output current of 4.8A in a D2PAK surface mount package.

The IPS1021STRLPBF has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Key Parameters

Parameter	IPS1021STRLPBF
Manufacturer	Infineon Technologies
Switch Type	General Purpose N-Channel Low Side
Ratio - Input:Output	1:1
Number of Outputs	1
Voltage - Load (Max)	28V
Current - Output (Max)	4.8A
Rds On (Typ)	20mOhm
Package / Case	TO-263-3, D2PAK (2 Leads + Tab)
Mounting Type	Surface Mount
Operating Temperature	-40°C ~ 150°C (TJ)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the IPS1021STRLPBF is determined by the following critical parameters:

Package Compatibility: All substitute parts must use the D2PAK (TO-263-3) surface mount package to ensure mechanical and electrical compatibility with existing PCB layouts.
Functional Configuration: All substitutes must maintain 1:1 input-to-output ratio with single output, non-inverting input, and low-side N-Channel output configuration.
Electrical Performance: Substitute parts must support the application's voltage and current requirements. The IPS1021STRLPBF operates at 28V maximum load voltage with 4.8A output current. Substitutes with higher voltage and current ratings provide design margin and enhanced performance capability.
Interface Type: All substitutes must feature On/Off control interface matching the original part.
Fault Protection: Substitutes include current limiting and over-temperature protection, with enhanced models adding over-voltage protection.

The five STMicroelectronics VIPower™ and OMNIFET™ series parts listed below meet these substitution criteria while offering improved electrical characteristics and active product status.

Parameter Comparison

Parameter	IPS1021STRLPBF	VNB10N07TR-E	VNB14NV04TR-E	VNB20N07TR-E	VNB35N07TR-E	VNB35NV04TR-E
Manufacturer	Infineon	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics	STMicroelectronics
Switch Type	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose	General Purpose
Ratio - Input:Output	1:1	1:1	1:1	1:1	1:1	1:1
Number of Outputs	1	1	1	1	1	1
Output Configuration	Low Side	Low Side	Low Side	Low Side	Low Side	Low Side
Output Type	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel	N-Channel
Interface	On/Off	On/Off	On/Off	On/Off	On/Off	On/Off
Input Type	Non-Inverting	Non-Inverting	Non-Inverting	Non-Inverting	Non-Inverting	Non-Inverting
Voltage - Load (Max)	28V	55V	36V	55V	55V	36V
Current - Output (Max)	4.8A	14A	12A	14A	25A	30A
Rds On (Typ)	20mOhm	100mOhm (Max)	35mOhm (Max)	50mOhm (Max)	28mOhm (Max)	13mOhm (Max)
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	Current Limiting (Fixed), Over Temperature, Over Voltage
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Operating Temperature	-40°C ~ 150°C (TJ)	Not specified	-40°C ~ 150°C (TJ)	Not specified	Not specified	-40°C ~ 150°C (TJ)
Product Status	Obsolete	Active	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All five substitute parts are manufactured by STMicroelectronics and maintain active product status, ensuring long-term availability and supply chain continuity. Each substitute is ROHS3 compliant and carries REACH Unaffected certification, meeting current environmental and regulatory requirements.

VNB35NV04TR-E is the primary recommended substitute. It provides the lowest on-resistance (13mOhm maximum) and highest output current capability (30A), delivering superior thermal performance and efficiency compared to the IPS1021STRLPBF. Operating temperature range matches the original part (-40°C to 150°C). The 36V maximum load voltage accommodates the IPS1021STRLPBF's 28V requirement with adequate design margin.

VNB14NV04TR-E is an alternative for applications requiring lower current capacity. It offers 12A output current with 35mOhm on-resistance and matches the original part's operating temperature range. The 36V maximum load voltage provides compatibility with existing designs.

VNB35N07TR-E, VNB20N07TR-E, and VNB10N07TR-E provide additional options with 55V maximum load voltage ratings and varying current capabilities (25A, 14A, and 14A respectively). These parts include status flag functionality and enhanced over-voltage protection. Operating temperature specifications are not provided for these variants.

All substitute parts maintain identical D2PAK package geometry, pinout, and surface mount compatibility with the original IPS1021STRLPBF design.

Frequently Asked Questions (FAQ)

Q: Can VNB35NV04TR-E directly replace IPS1021STRLPBF without PCB modifications?

A: Yes. Both parts use identical D2PAK (TO-263-3) surface mount packaging with the same pinout configuration. No PCB layout changes are required for mechanical or electrical compatibility.

Q: What is the primary advantage of substituting to VNB35NV04TR-E?

A: VNB35NV04TR-E provides significantly lower on-resistance (13mOhm maximum versus 20mOhm typical for IPS1021STRLPBF), resulting in reduced power dissipation and improved thermal performance. Higher current rating (30A versus 4.8A) provides design margin for future application scaling.

Q: Are all substitute parts RoHS compliant?

A: Yes. All five STMicroelectronics substitute parts are ROHS3 compliant and carry REACH Unaffected certification, meeting current environmental regulations.

Q: Which substitute part should be selected for cost-optimized designs?

A: VNB10N07TR-E offers the lowest-cost option among active substitutes while maintaining full functional compatibility. It provides 14A output current and 55V maximum load voltage, exceeding the IPS1021STRLPBF's 4.8A and 28V specifications.

Q: Do substitute parts require different control signal levels or timing?

A: No. All substitute parts maintain non-inverting On/Off control interface identical to the IPS1021STRLPBF. Existing driver circuits and control logic require no modification.

Q: What is the moisture sensitivity level of substitute parts?

A: All STMicroelectronics substitutes carry MSL 3 (168 Hours) rating, compared to MSL 1 (Unlimited) for the original part. Standard moisture control procedures during storage and assembly are required.

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