IPB05N03LA N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IPB05N03LA is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 25V drain-to-source voltage with 80A continuous drain current in a Surface Mount TO-263-3 (D2PAK) package. This device is classified as Obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across electrical ratings, thermal performance, and mechanical packaging specifications.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	25	V
Continuous Drain Current (Id) @ 25°C	80	A
On-State Resistance (Rds On Max) @ 55A, 10V	4.6	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 50µA	2	V
Power Dissipation (Max)	94	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-263-3, D2PAK	—
Mounting Type	Surface Mount	—

Substitute Part Grouping Explanation

Substitution eligibility for the IPB05N03LA is determined by the following critical parameters:

Electrical Compatibility Criteria:

Drain-to-Source Voltage (Vdss) must equal or exceed 25V
Continuous Drain Current (Id) must equal or exceed 80A at 25°C
On-State Resistance (Rds On) must not exceed the original specification to maintain thermal and efficiency performance
Gate Threshold Voltage (Vgs(th)) must remain within ±20V maximum gate voltage specification
Power Dissipation capability must support the thermal requirements of the application

Mechanical Compatibility Criteria:

Package must be TO-263-3 or D2PAK (2 Leads + Tab) configuration
Surface Mount mounting type required
Tape & Reel (TR) packaging for automated assembly compatibility

Environmental & Compliance Criteria:

Operating temperature range must span -55°C to 175°C minimum
Moisture Sensitivity Level (MSL) of 1 (Unlimited) acceptable
RoHS and REACH compliance status noted for regulatory requirements

The two substitute parts identified meet these criteria with voltage ratings of 30V (exceeding the 25V requirement) and current ratings ranging from 32A to 100A, accommodating various application scenarios while maintaining package and thermal compatibility.

Parameter Comparison

Parameter	IPB05N03LA (Main)	PSMN017-30BL,118	PSMN4R3-30BL,118	Unit
Manufacturer	Infineon Technologies	Nexperia USA Inc.	Nexperia USA Inc.	—
Drain to Source Voltage (Vdss)	25	30	30	V
Continuous Drain Current (Id) @ 25°C	80	32	100	A
Rds On (Max)	4.6 @ 55A, 10V	17 @ 10A, 10V	4.1 @ 15A, 10V	mOhm
Gate Threshold Voltage (Vgs(th) Max)	2 @ 50µA	2.15 @ 1mA	2.15 @ 1mA	V
Gate Charge (Qg Max) @ Vgs	25 @ 5V	10.7 @ 10V	41.5 @ 10V	nC
Input Capacitance (Ciss Max) @ Vds	3110 @ 15V	552 @ 15V	2400 @ 15V	pF
Power Dissipation (Max)	94	47	103	W
Operating Temperature Range	-55 to 175	-55 to 175	-55 to 175	°C
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	TO-263-3, D2PAK	—
Product Status	Obsolete	Obsolete	Active	—
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	—

Engineering Selection Recommendations

PSMN4R3-30BL,118 (Primary Substitute):

This part is the preferred substitute for the IPB05N03LA. It maintains Active product status, ensuring long-term availability and manufacturing support. The 30V Vdss rating provides 5V margin above the original 25V specification. The 100A continuous drain current exceeds the 80A requirement, offering design flexibility for current-demanding applications. The 4.1 mOhm on-state resistance at 10V is superior to the original 4.6 mOhm specification, resulting in lower conduction losses and improved thermal efficiency. Power dissipation capability of 103W exceeds the original 94W rating. ROHS3 compliance satisfies modern regulatory requirements. The D2PAK package maintains mechanical and thermal interface compatibility with existing PCB designs.

PSMN017-30BL,118 (Secondary Substitute):

This part is suitable for applications where the 80A current requirement can be reduced to 32A continuous operation. The 30V Vdss rating provides adequate voltage margin. However, the 17 mOhm on-state resistance is significantly higher than the original specification, resulting in increased conduction losses and thermal dissipation. The 47W power dissipation rating is below the original 94W specification, limiting thermal headroom. This part is classified as Obsolete, presenting potential long-term procurement challenges. ROHS3 compliance is maintained. Selection of this substitute requires verification that application current demands do not exceed 32A and that thermal design accommodates the higher on-state resistance.

Compliance Considerations:

Both substitute parts are ROHS3 compliant, addressing regulatory requirements that the original IPB05N03LA does not meet. The PSMN4R3-30BL,118 Active status provides superior supply chain continuity compared to the Obsolete classification of both the original part and the PSMN017-30BL,118 alternative.

Frequently Asked Questions (FAQ)

Q: Can the PSMN4R3-30BL,118 directly replace the IPB05N03LA without circuit modifications?

A: Yes. The PSMN4R3-30BL,118 maintains identical gate drive voltage requirements (4.5V and 10V), gate threshold voltage compatibility (2.15V vs. 2V), and D2PAK package pinout. The 30V Vdss rating is backward-compatible with 25V circuit designs. No gate drive circuit modifications are required.

Q: What is the impact of the higher on-state resistance in the PSMN017-30BL,118?

A: The PSMN017-30BL,118 exhibits 17 mOhm on-state resistance compared to 4.6 mOhm in the original part. At 32A continuous current, this results in approximately 17.4W conduction loss (I²R) versus 4.7W in the original design. This increased dissipation requires thermal design verification and may necessitate enhanced heatsinking or reduced operating current.

Q: Are there package compatibility concerns when substituting these parts?

A: No. All three parts use the TO-263-3 D2PAK package with identical pinout and thermal interface. PCB footprints, solder reflow profiles, and thermal management approaches remain unchanged.

Q: Why is the PSMN4R3-30BL,118 recommended over the PSMN017-30BL,118?

A: The PSMN4R3-30BL,118 offers superior electrical performance (4.1 mOhm vs. 17 mOhm on-state resistance), higher current rating (100A vs. 32A), greater power dissipation capability (103W vs. 47W), and Active product status ensuring long-term availability. The PSMN017-30BL,118 is suitable only for applications with reduced current requirements below 32A.

Q: What is the significance of the 30V Vdss rating in the substitute parts?

A: The 30V rating provides a 5V safety margin above the original 25V specification. This margin accommodates transient voltage spikes and overvoltage conditions common in switching applications, improving reliability without requiring circuit redesign.

Q: How do gate charge differences affect circuit performance?

A: The PSMN4R3-30BL,118 exhibits 41.5 nC gate charge versus 25 nC in the original part. Higher gate charge requires slightly longer switching times and increased gate drive current. For most applications using standard gate drivers, this difference is negligible. High-frequency switching designs (>1 MHz) should verify gate driver capability.

Q: Are there thermal management differences between the substitute parts?

A: The PSMN4R3-30BL,118 provides 103W power dissipation capability versus 94W in the original, offering improved thermal headroom. The PSMN017-30BL,118 is limited to 47W, requiring enhanced thermal management or reduced operating current. Thermal interface material and heatsink design should be verified for each substitute based on application duty cycle.

Q: What is the impact of input capacitance differences?

A: The PSMN4R3-30BL,118 exhibits 2400 pF input capacitance versus 3110 pF in the original part, representing a 23% reduction. Lower input capacitance reduces gate charge requirements and improves switching speed. The PSMN017-30BL,118 shows significantly lower capacitance (552 pF), enabling faster switching but with reduced current capability.

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