IPB09N03LAT N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IPB09N03LAT is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 25V drain-to-source voltage with 50A continuous drain current at 25°C. This device is housed in a PG-TO263-3-2 package (D2PAK configuration) and is designed for surface mount applications requiring moderate power dissipation up to 63W at the case temperature.

The IPB09N03LAT is classified as an obsolete product. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support legacy system maintenance or redesign initiatives.

Key Parameters

Parameter	Value	Unit
Manufacturer Part Number	IPB09N03LAT	—
Manufacturer	Infineon Technologies	—
FET Type	N-Channel	—
Drain-to-Source Voltage (Vdss)	25	V
Continuous Drain Current (Id) @ 25°C	50	A (Tc)
On-Resistance (Rds On Max) @ 30A, 10V	8.9	mOhm
Gate Threshold Voltage (Vgs(th) Max) @ 20µA	2	V
Power Dissipation (Max)	63	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	—
Mounting Type	Surface Mount	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the IPB09N03LAT is determined by the following critical parameters:

Electrical Compatibility Criteria:

FET Type: N-Channel topology must be maintained
Drain-to-Source Voltage (Vdss): Substitute must equal or exceed 25V
Continuous Drain Current (Id): Substitute must support the required current level for the application
On-Resistance (Rds On): Lower values indicate improved performance; higher values may increase power dissipation
Gate Threshold Voltage (Vgs(th)): Must remain within compatible switching thresholds
Operating Temperature Range: Must cover -55°C to 175°C (TJ)

Mechanical & Packaging Criteria:

Package Type: D2PAK (TO-263-3) configuration for direct footprint compatibility
Mounting Type: Surface mount technology
Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for handling flexibility

Compliance Criteria:

REACH Status: REACH Unaffected
ECCN Classification: EAR99
HTSUS Code: 8541.29.0095

The substitute parts listed below meet these criteria within the allowed parameter ranges for this product category.

Parameter Comparison

Parameter	IPB09N03LAT (Main)	PSMN017-30BL,118	PSMN4R3-30BL,118	Unit
Manufacturer	Infineon Technologies	Nexperia USA Inc.	Nexperia USA Inc.	—
FET Type	N-Channel	N-Channel	N-Channel	—
Vdss	25	30	30	V
Id @ 25°C (Tc)	50	32	100	A
Rds On (Max)	8.9 @ 30A, 10V	17 @ 10A, 10V	4.1 @ 15A, 10V	mOhm
Vgs(th) (Max)	2 @ 20µA	2.15 @ 1mA	2.15 @ 1mA	V
Gate Charge (Qg) (Max) @ Vgs	13 @ 5V	10.7 @ 10V	41.5 @ 10V	nC
Power Dissipation (Max)	63	47	103	W (Tc)
Operating Temperature	-55 to 175	-55 to 175	-55 to 175	°C (TJ)
Package Type	TO-263-3, D2PAK	D2PAK	D2PAK	—
Product Status	Obsolete	Obsolete	Active	—
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	—
MSL	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	—

Engineering Selection Recommendations

PSMN4R3-30BL,118 (Primary Substitute)

The PSMN4R3-30BL,118 is the preferred substitute for new designs and ongoing production. This part is classified as Active product status, ensuring long-term availability and supply chain stability. It exceeds the electrical performance of the IPB09N03LAT with a continuous drain current rating of 100A (versus 50A) and superior on-resistance of 4.1mOhm at 15A, 10V. The higher Vdss rating of 30V provides additional voltage margin. Both parts share identical operating temperature range (-55°C to 175°C), D2PAK package configuration, and MSL 1 classification. The PSMN4R3-30BL,118 carries ROHS3 compliance certification, supporting modern environmental and regulatory requirements.

PSMN017-30BL,118 (Secondary Substitute)

The PSMN017-30BL,118 is an alternative substitute suitable for applications where the continuous drain current requirement is lower than the main part specification. This part is rated for 32A continuous drain current, which is below the IPB09N03LAT's 50A rating. It is classified as Obsolete product status, similar to the main part. The PSMN017-30BL,118 features a higher on-resistance of 17mOhm at 10A, 10V and lower power dissipation of 47W. This substitute is appropriate only for legacy system maintenance where current requirements do not exceed 32A and where existing inventory or supply agreements favor this part number.

Compliance & Certification Alignment

All substitute parts maintain REACH Unaffected status and EAR99 ECCN classification, consistent with the main part. The PSMN4R3-30BL,118 and PSMN017-30BL,118 both achieve ROHS3 compliance, supporting regulatory requirements for new product development and manufacturing.

Frequently Asked Questions (FAQ)

Q: Can the PSMN4R3-30BL,118 be used as a direct replacement for the IPB09N03LAT in existing designs?

A: The PSMN4R3-30BL,118 is electrically and mechanically compatible with the IPB09N03LAT. Both devices use the D2PAK package, share identical operating temperature ranges, and maintain the same gate threshold voltage classification. The substitute part exceeds the electrical specifications of the main part, making it suitable for direct substitution in existing PCB layouts without modification.

Q: What is the difference in on-resistance between the main part and the substitute parts?

A: The IPB09N03LAT has an on-resistance of 8.9mOhm at 30A, 10V. The PSMN4R3-30BL,118 offers superior performance at 4.1mOhm at 15A, 10V, resulting in lower power dissipation and improved efficiency. The PSMN017-30BL,118 has a higher on-resistance of 17mOhm at 10A, 10V, which increases power dissipation and is suitable only for lower current applications.

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

A: No package compatibility concerns exist. The IPB09N03LAT, PSMN4R3-30BL,118, and PSMN017-30BL,118 all use the D2PAK (TO-263-3) package configuration with identical pinout and footprint. Surface mount assembly processes and PCB layouts require no modification.

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

A: The PSMN4R3-30BL,118 is recommended because it is classified as Active product status, ensuring long-term availability and supply chain continuity. It also provides superior electrical performance with higher current rating (100A versus 32A) and lower on-resistance (4.1mOhm versus 17mOhm). The PSMN017-30BL,118 is Obsolete, similar to the main part, and offers reduced performance specifications.

Q: What is the significance of the Vdss rating difference between the main part and substitutes?

A: The IPB09N03LAT is rated for 25V Vdss, while both substitute parts are rated for 30V Vdss. The higher voltage rating of the substitutes provides additional design margin and protection against voltage transients. This difference does not prevent substitution; the higher-rated parts are suitable for applications designed for 25V operation.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both PSMN4R3-30BL,118 and PSMN017-30BL,118 are ROHS3 compliant. The main part IPB09N03LAT does not specify RoHS status in the provided data. The substitute parts support modern environmental and regulatory requirements for new product development.

Q: What is the MSL rating, and why is it important?

A: All three parts carry MSL 1 (Unlimited) classification, indicating unlimited shelf life and handling flexibility. This rating eliminates moisture sensitivity concerns during storage, transportation, and assembly processes, ensuring consistent product reliability.

Q: Can the PSMN017-30BL,118 be used in applications requiring 50A continuous drain current?

A: No. The PSMN017-30BL,118 is rated for only 32A continuous drain current, which is below the 50A requirement of the IPB09N03LAT. Using this part in a 50A application would exceed its electrical rating and result in device failure or thermal damage. The PSMN4R3-30BL,118 is the appropriate substitute for applications requiring 50A or higher current capability.

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