IPP04N03LB G N-Channel 30V 80A MOSFET Equivalent & Substitute Parts

Part Overview

The IPP04N03LB G is an N-Channel 30V 80A MOSFET manufactured by Infineon Technologies in the OptiMOS™ series. This device is rated for continuous drain current of 80A at 25°C with a maximum drain-source voltage of 30V and is housed in a TO-220-3 through-hole package. The part is classified as Obsolete, indicating it is no longer in active production. 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
Drain-Source Voltage (Vdss)	30	V
Continuous Drain Current (Id) @ 25°C	80	A
On-State Resistance (Rds On) @ 55A, 10V	3.8	mOhm
Gate Threshold Voltage (Vgs(th)) @ 70µA	2	V
Gate Charge (Qg) @ 5V	40	nC
Power Dissipation (Max)	107	W
Operating Temperature Range	-55 to 175	°C
Package Type	TO-220-3
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the IPP04N03LB G is determined by strict alignment of the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

Drain-Source Voltage (Vdss): Must equal 30V
Continuous Drain Current (Id): Must be equal to or greater than 80A
Package Type: Must be TO-220-3 or compatible TO-220 variant
Mounting Type: Must be Through Hole
Operating Temperature Range: Must encompass -55°C to 175°C

Secondary Compatibility Factors:

On-State Resistance (Rds On): Lower or equal values indicate improved performance
Gate Charge (Qg): Lower values reduce switching losses
Power Dissipation: Higher ratings provide thermal margin

Substitute parts are grouped into two categories:

Category A - Direct Electrical Equivalents (30V, 80A class): Parts meeting or exceeding the 80A continuous drain current specification at 30V with TO-220-3 packaging. These parts maintain functional equivalence with the original design.

Category B - Higher Current Capability (30V, >80A class): Parts rated for 100A or higher continuous drain current at 30V. These parts provide enhanced current handling and thermal performance while maintaining voltage compatibility and package form factor.

Excluded Parts: IRF830APBF and IRFBC30APBF are excluded from direct substitution due to voltage rating mismatch (500V and 600V respectively), which exceeds the 30V specification and represents a different application class.

Parameter Comparison

Part Number	Manufacturer	Vdss (V)	Id @ 25°C (A)	Rds On (mOhm)	Qg (nC)	Package	Status
IPP04N03LB G	Infineon	30	80	3.8	40	TO-220-3	Obsolete
IPP042N03LGXKSA1	Infineon	30	70	4.2	38	TO-220-3	Not For New Designs
FDP8030L	Fairchild Semiconductor	30	80	3.5	170	TO-220-3	Active
IRLB8743PBF	Infineon	30	78	3.2	54	TO-220-3	Active
IRL7833PBF	Infineon	30	150	3.8	47	TO-220-3	Not For New Designs
PSMN2R0-30PL,127	Nexperia USA Inc.	30	100	2.1	117	TO-220-3	Obsolete
PSMN3R4-30PL,127	Nexperia USA Inc.	30	100	3.4	64	TO-220-3	Obsolete
PSMN4R3-30PL,127	Nexperia USA Inc.	30	100	4.3	41.5	TO-220-3	Obsolete

Engineering Selection Recommendations

For Active Production and New Designs:

IRLB8743PBF is the recommended substitute for new designs. This part is classified as Active and maintains electrical compatibility with the IPP04N03LB G across all critical parameters: 30V Vdss, 78A continuous drain current (within 2.5% of original 80A specification), and TO-220-3 package. The IRLB8743PBF exhibits superior on-state resistance (3.2 mOhm versus 3.8 mOhm), providing improved thermal performance. RoHS3 compliance and unlimited moisture sensitivity level (MSL 1) support modern manufacturing and supply chain requirements.

For Legacy System Maintenance:

FDP8030L provides direct electrical equivalence with 30V Vdss and 80A continuous drain current in TO-220-3 packaging. This part is Active and maintains the original current rating without derating. The higher gate charge (170 nC) and input capacitance (10500 pF) require verification against circuit switching frequency and driver capabilities. FDP8030L is suitable for direct replacement in existing designs without circuit modification.

For Enhanced Thermal Performance:

IRL7833PBF and PSMN2R0-30PL,127 offer 150A and 100A continuous drain current respectively at 30V, providing increased thermal margin and reduced on-state losses. These parts are suitable for applications requiring improved reliability or thermal headroom. IRL7833PBF is classified as Not For New Designs; PSMN2R0-30PL,127 is Obsolete. Both require verification of gate drive compatibility due to higher gate charge specifications.

Compliance Considerations:

All recommended substitute parts maintain REACH Unaffected or REACH Affected status consistent with the original part. RoHS3 compliance is available in IRLB8743PBF, FDP8030L, and higher-current Nexperia devices, supporting modern regulatory requirements.

Frequently Asked Questions (FAQ)

Q1: Can IPP042N03LGXKSA1 directly replace IPP04N03LB G?

IPP042N03LGXKSA1 is rated for 70A continuous drain current, which is 12.5% below the original 80A specification. This part is suitable only for applications where the actual circuit current demand does not exceed 70A. The part is classified as Not For New Designs. Direct substitution without circuit analysis is not recommended.

Q2: What is the difference between TO-220-3 and TO-220AB packaging?

Both are through-hole packages with identical pin configuration and thermal characteristics. TO-220-3 and TO-220AB are mechanically and electrically interchangeable. All substitute parts listed maintain compatibility with existing PCB layouts and mounting hardware.

Q3: Why is FDP8030L recommended despite higher gate charge?

FDP8030L maintains exact electrical equivalence (30V, 80A) with the original IPP04N03LB G and is currently Active in production. The higher gate charge (170 nC versus 40 nC) requires verification that the circuit gate driver can supply sufficient current at the intended switching frequency. If the original circuit operated successfully with the IPP04N03LB G, the gate driver is capable of handling FDP8030L.

Q4: Are Nexperia PSMN series parts suitable for direct replacement?

PSMN2R0-30PL,127, PSMN3R4-30PL,127, and PSMN4R3-30PL,127 are all rated for 100A continuous drain current at 30V, exceeding the original 80A specification. All three parts are classified as Obsolete. These parts are suitable for replacement in applications where higher current capability provides design margin. The lower on-state resistance in PSMN2R0-30PL,127 (2.1 mOhm) reduces power dissipation compared to the original part.

Q5: What is the significance of product status (Active, Obsolete, Not For New Designs)?

Active status indicates the part is in current production with full manufacturer support and guaranteed availability. Obsolete status indicates the part is no longer manufactured; existing inventory may be available from distributors but future supply is not guaranteed. Not For New Designs indicates the part is in limited production for legacy support only. For new designs, Active parts are preferred; for legacy system maintenance, Obsolete or Not For New Designs parts may be acceptable if inventory is available.

Q6: Can IRLB8743PBF be used in all applications where IPP04N03LB G was used?

IRLB8743PBF is rated for 78A continuous drain current, which is 2.5% below the original 80A specification. For applications operating at or near 80A continuous current, circuit analysis is required to confirm that the 78A rating provides adequate margin. For applications operating below 75A continuous current, IRLB8743PBF is a direct substitute with improved performance characteristics.

Q7: What thermal considerations apply when substituting with higher-current parts?

Higher-current parts (100A, 150A) typically exhibit lower on-state resistance and reduced power dissipation at equivalent current levels. These parts may operate at lower junction temperatures in the same thermal environment. Verification that the PCB thermal design and heatsinking are adequate for the original part ensures compatibility with higher-current substitutes. No additional thermal management is required.

Q8: Are there any gate drive voltage differences between substitute parts?

All substitute parts maintain Vgs (Max) of ±20V, consistent with the original IPP04N03LB G. Gate threshold voltages (Vgs(th)) range from 2.0V to 2.35V across all parts, which is within the typical operating range of standard gate drivers. No gate driver circuit modification is required for substitution.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message