IPD09N03LB G N-Channel MOSFET 30V 50A Equivalent & Substitute Parts

Part Overview

The IPD09N03LB G is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage and 50A continuous drain current in the OptiMOS™ series. This device is classified as obsolete product status. Due to its obsolete classification, identifying equivalent and substitute parts from active product lines is necessary to maintain design continuity and ensure long-term component availability for new production runs and system updates.

Key Parameters

Parameter	Value	Unit
Drain to Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	50	A (Tc)
Rds On (Max) @ Id, Vgs	9.1	mOhm @ 50A, 10V
Gate Threshold Voltage Vgs(th) (Max)	2	V @ 20µA
Gate Charge (Qg) (Max)	13	nC @ 5V
Input Capacitance (Ciss) (Max)	1600	pF @ 15V
Power Dissipation (Max)	58	W (Tc)
Operating Temperature Range	-55 to 175	°C (TJ)
Package Type	TO-252-3 (DPAK)	-
Mounting Type	Surface Mount	-

Substitute Part Grouping Explanation

Substitution of the IPD09N03LB G is determined by strict alignment of the following electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-to-Source Voltage (Vdss): Must equal 30V
Package Type: Must be TO-252-3 (DPAK) or compatible surface mount package
FET Type: Must be N-Channel MOSFET
Technology: Must be Metal Oxide Semiconductor (MOSFET)
Mounting Type: Must be Surface Mount

Secondary Compatibility Parameters:

Continuous Drain Current (Id): Substitute must support minimum 50A or higher at Tc
Rds On (Max): Substitute must not exceed 9.1 mOhm @ rated conditions
Operating Temperature Range: Must encompass -55°C to 175°C
Gate Threshold Voltage: Must be within ±20V Vgs maximum rating

The substitute parts listed below meet all primary criteria and maintain electrical performance within acceptable operating margins for direct replacement applications.

Parameter Comparison

Parameter	IPD09N03LB G (Main)	IPD090N03LGATMA1	DMN3010LK3-13	FDD8880	STD40NF03LT4
Manufacturer	Infineon	Infineon	Diodes Inc.	onsemi	STMicroelectronics
Vdss (V)	30	30	30	30	30
Id @ 25°C (A)	50 (Tc)	40 (Tc)	43 (Tc)	58 (Tc)	40 (Tc)
Rds On (Max) (mOhm)	9.1 @ 50A, 10V	9 @ 30A, 10V	9.5 @ 18A, 10V	9 @ 35A, 10V	11 @ 20A, 10V
Vgs(th) (Max) (V)	2 @ 20µA	2.2 @ 250µA	2.5 @ 250µA	2.5 @ 250µA	1 @ 250µA
Qg (Max) (nC)	13 @ 5V	15 @ 10V	37 @ 10V	31 @ 10V	30 @ 5V
Ciss (Max) (pF)	1600 @ 15V	1600 @ 15V	2075 @ 15V	1260 @ 15V	1440 @ 25V
Power Dissipation (Max) (W)	58 (Tc)	42 (Tc)	1.6 (Ta)	55 (Tc)	80 (Tc)
Operating Temp Range (°C)	-55 to 175	-55 to 175	-55 to 150	-55 to 175	-55 to 175
Package	TO-252-3	TO-252-3	TO-252-3	TO-252AA	DPAK
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	-	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

IPD090N03LGATMA1 (Infineon Technologies)

This substitute maintains the same manufacturer lineage and OptiMOS™ series technology. It provides active product status with ROHS3 compliance and superior moisture sensitivity rating (MSL 1 vs. MSL 3). The 40A continuous drain current rating is lower than the original 50A specification; however, it remains suitable for applications where the design margin permits operation at reduced current levels. This part is recommended for designs where Infineon component continuity is required.

FDD8880 (onsemi)

This PowerTrench® series MOSFET exceeds the original 50A specification with 58A continuous drain current capability and maintains 55W power dissipation comparable to the original 58W rating. It provides active product status, ROHS3 compliance, and MSL 1 rating. The TO-252AA package is mechanically and electrically compatible with TO-252-3. This part is recommended for applications requiring maximum current headroom and thermal performance.

STD40NF03LT4 (STMicroelectronics)

This STripFET™ II series device provides 40A continuous drain current with 80W power dissipation capability, exceeding thermal performance of the original part. It maintains active product status, ROHS3 compliance, and MSL 1 rating. The DPAK package is mechanically equivalent to TO-252-3. This part is recommended for high-power applications where thermal margin is critical.

DMN3010LK3-13 (Diodes Incorporated)

This substitute provides 43A continuous drain current (Tc) with active product status and ROHS3 compliance. However, the operating temperature range extends only to 150°C, which is 25°C below the original specification. Additionally, the power dissipation rating of 1.6W (Ta) is significantly lower than the original 58W specification. This part is suitable only for applications operating within the reduced temperature range and lower power dissipation envelope.

Frequently Asked Questions (FAQ)

Q: Can IPD090N03LGATMA1 directly replace IPD09N03LB G in all applications?

A: IPD090N03LGATMA1 is electrically compatible for applications operating at or below 40A continuous drain current. The 30V Vdss rating, TO-252-3 package, and operating temperature range (-55°C to 175°C) are identical. However, designs requiring the full 50A specification must use FDD8880 or STD40NF03LT4.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: The original IPD09N03LB G has MSL 3 (168 hours), requiring controlled storage and handling. All substitute parts have MSL 1 (Unlimited), eliminating moisture sensitivity constraints and reducing storage and handling costs during manufacturing.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All four substitute parts carry ROHS3 compliance certification. The original IPD09N03LB G does not specify RoHS status. ROHS3 compliance ensures the parts meet current environmental and regulatory requirements for new production.

Q: Can FDD8880 be used in place of IPD09N03LB G despite the TO-252AA package designation?

A: Yes. The TO-252AA package is mechanically and electrically compatible with TO-252-3 (DPAK). Both are surface mount packages with identical pin configurations and thermal characteristics. The "AA" designation indicates a minor package variant without functional impact.

Q: Why does DMN3010LK3-13 have a lower operating temperature maximum?

A: DMN3010LK3-13 is rated to 150°C (TJ) versus 175°C for the original part. This 25°C difference may restrict use in high-temperature environments. Applications requiring full -55°C to 175°C operation must use IPD090N03LGATMA1, FDD8880, or STD40NF03LT4.

Q: What does the power dissipation rating difference indicate?

A: Power dissipation ratings reflect thermal performance under specified conditions. FDD8880 (55W) and STD40NF03LT4 (80W) provide thermal performance comparable to or exceeding the original 58W specification. DMN3010LK3-13 (1.6W Ta) indicates measurement under ambient temperature conditions rather than case temperature, making direct comparison inappropriate for thermal design purposes.

Q: Are gate charge (Qg) differences significant for circuit design?

A: Gate charge differences affect switching speed and driver circuit requirements. The original part specifies 13 nC @ 5V. Substitutes range from 15 nC to 37 nC depending on measurement conditions. Higher gate charge may require driver circuit optimization but does not prevent functional substitution in standard switching applications.

Q: Can these parts be used interchangeably in PCB layouts designed for IPD09N03LB G?

A: Yes. All substitute parts use TO-252-3 or compatible DPAK packages with identical pin assignments and footprints. No PCB layout modifications are required. Thermal pad design should accommodate the power dissipation rating of the selected substitute part.

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