IPB03N03LB G Equivalent & Substitute Parts

Part Overview

The IPB03N03LB G is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 30V drain-to-source voltage and 80A continuous drain current at 25°C. The device is packaged in D2PAK (TO-263-3) surface mount configuration with a maximum power dissipation of 150W. This part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and maintenance applications.

Substiute Parts

IPB03N03LB G

Infineon TechnologiesIn Stock: 1611IPB03N03LB G Datasheet

Current PartRFQ

PSMN2R7-30BL,118

NXP USA Inc.In Stock: 2240PSMN2R7-30BL,118 Datasheet

MFR RecommendedRFQ

PSMN3R4-30BLE,118

Nexperia USA Inc.In Stock: 4808PSMN3R4-30BLE,118 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IPB03N03LB G is determined by strict equivalence in the following electrical and mechanical parameters:

Critical Matching Parameters:

• Drain to Source Voltage (Vdss): 30V (exact match required)
• Package Type: D2PAK (TO-263-3) surface mount (exact match required)
• FET Type: N-Channel MOSFET (exact match required)
• Gate Voltage Range (Vgs Max): ±20V (exact match required)
• Operating Temperature Range: -55°C to 175°C (exact match required)

Allowable Variation Parameters:

• Continuous Drain Current (Id): Equal to or greater than 80A
• On-State Resistance (Rds On): Equal to or lower than 2.8 mOhm (at specified conditions)
• Power Dissipation: Equal to or greater than 150W
• Gate Charge (Qg): Equal to or lower than 59 nC
• Input Capacitance (Ciss): Equal to or lower than 7624 pF

The identified substitute parts meet all critical matching parameters and provide equal or superior electrical performance within the allowable variation range.

Parameter Comparison

Engineering Selection Recommendations

PSMN2R7-30BL,118 (NXP USA Inc.): This substitute provides 100A continuous drain current, exceeding the 80A requirement of the IPB03N03LB G. The part is active and in production. Input capacitance is reduced to 3954 pF, providing improved switching performance. Gate charge is 66 nC, slightly elevated from the original 59 nC. Power dissipation capability is 170W, supporting higher thermal loads. This part is suitable for direct replacement in applications where the increased current rating and reduced input capacitance provide system benefits.

PSMN3R4-30BLE,118 (Nexperia USA Inc.): This substitute provides 120A continuous drain current with 178W power dissipation, representing the highest performance option. The part is active and RoHS3 compliant. Gate charge is 81 nC and input capacitance is 4682 pF, both higher than the original part but within acceptable ranges for most applications. This part is packaged in Tape & Reel format and carries MSL 1 rating. Selection of this part is appropriate for applications requiring maximum current capacity and thermal headroom.

Both substitute parts maintain exact equivalence in voltage rating, package type, gate voltage range, and operating temperature. Selection between the two substitutes depends on specific application requirements for current capacity, power dissipation, and switching characteristics.

Frequently Asked Questions (FAQ)

Q: Can PSMN2R7-30BL,118 or PSMN3R4-30BLE,118 be used as direct replacements for IPB03N03LB G?

A: Yes. Both parts are direct replacements. They share identical drain-to-source voltage (30V), package type (D2PAK TO-263-3), gate voltage range (±20V), and operating temperature range (-55°C to 175°C). The substitute parts provide equal or superior continuous drain current and power dissipation ratings.

Q: What are the key differences between the two substitute parts?

A: PSMN2R7-30BL,118 provides 100A continuous current with 170W power dissipation and lower input capacitance (3954 pF). PSMN3R4-30BLE,118 provides 120A continuous current with 178W power dissipation and higher input capacitance (4682 pF). Both exceed the original 80A specification.

Q: Are there any package compatibility concerns?

A: No. All three parts use the D2PAK (TO-263-3) surface mount package with identical pinout and mechanical dimensions. PCB footprints are interchangeable.

Q: What is the significance of the higher gate charge in the substitute parts?

A: Gate charge of 66 nC (PSMN2R7-30BL,118) and 81 nC (PSMN3R4-30BLE,118) compared to 59 nC (IPB03N03LB G) indicates slightly increased gate drive requirements. This affects switching speed and driver circuit design but does not prevent substitution in standard applications.

Q: How do the input capacitance values affect circuit performance?

A: The substitute parts exhibit lower input capacitance (3954 pF and 4682 pF) compared to the original part (7624 pF). Lower input capacitance generally improves switching speed and reduces gate drive power requirements, providing performance benefits in most applications.

Q: Are compliance certifications equivalent between the parts?

A: PSMN3R4-30BLE,118 carries RoHS3 compliance certification. Both substitute parts maintain REACH Unaffected status where specified. Verify compliance requirements for your specific application and regulatory jurisdiction.

Q: What is the inventory status of these substitute parts?

A: PSMN2R7-30BL,118 has 2163 pieces in stock. PSMN3R4-30BLE,118 has 4707 pieces in stock. Both are active production parts with established supply chains.