IRFS7734TRLPBF Equivalent & Substitute Parts

Part Overview

The IRFS7734TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 75V drain-to-source voltage with 183A continuous drain current at 25°C. This device is part of the HEXFET® and StrongIRFET™ series and is housed in a Surface Mount TO-263-3 (D2PAK) package. The part maintains Active product status and is RoHS3 compliant with MSL Level 1 (Unlimited moisture sensitivity).

Substitute parts are identified when equivalent electrical performance can be achieved within the allowed parameter tolerances for this MOSFET category, particularly when the main part experiences supply constraints or when design flexibility permits operation within a broader voltage or current specification range.

Substiute Parts

IRFS7734TRLPBF

Infineon TechnologiesIn Stock: 1418IRFS7734TRLPBF Datasheet

Current PartRFQ

FDB035AN06A0

Fairchild SemiconductorIn Stock: 7030FDB035AN06A0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRFS7734TRLPBF is determined by the following criteria:

Electrical Compatibility Parameters:

• Drain-to-Source Voltage (Vdss) must be equal to or greater than 75V
• Continuous Drain Current (Id) must support the application requirements
• On-State Resistance (Rds On) must not exceed specified maximums at rated conditions
• Gate Threshold Voltage (Vgs(th)) must fall within acceptable switching characteristics
• Gate Charge (Qg) affects switching speed and must be compatible with driver circuits
• Power Dissipation capability must meet thermal requirements
• Operating temperature range must encompass -55°C to 175°C

Mechanical Compatibility Parameters:

• Package type must be TO-263-3 (D2PAK) or equivalent Surface Mount configuration
• Pin configuration must match the 2 Leads + Tab standard
• Mounting footprint must be identical for direct PCB replacement

Compliance Parameters:

• RoHS3 compliance required
• REACH status must be unaffected or compliant
• Product status must be Active

The FDB035AN06A0 is identified as a substitute part; however, it operates at a lower Vdss rating (60V versus 75V) and reduced continuous drain current (80A Tc versus 183A Tc). This part is suitable only for applications where the lower voltage and current ratings are acceptable within the circuit design margins.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection: The IRFS7734TRLPBF remains the specified component for applications requiring 75V Vdss and 183A continuous drain current. This part is Active, RoHS3 compliant, and maintains MSL Level 1 (Unlimited) moisture sensitivity rating, making it suitable for standard manufacturing and storage conditions without special handling.

Substitute Part Consideration: The FDB035AN06A0 may be considered only in applications where both the following conditions are met:

• Circuit design permits operation at 60V Vdss maximum (not 75V)
• Application current requirements do not exceed 80A continuous drain current at 25°C

The FDB035AN06A0 offers lower gate charge (124 nC versus 270 nC), which may reduce switching losses in driver-limited applications. However, the reduced voltage and current ratings represent significant derating and are not interchangeable for designs specified to the full IRFS7734TRLPBF performance envelope.

Both parts share identical operating temperature range (-55°C to 175°C), identical Vgs maximum (±20V), and compatible TO-263 D2PAK Surface Mount packaging. Both maintain Active product status.

Frequently Asked Questions (FAQ)

Q: Can the FDB035AN06A0 directly replace the IRFS7734TRLPBF in all applications?

A: No. The FDB035AN06A0 has a lower Vdss rating (60V versus 75V) and significantly reduced continuous drain current (80A versus 183A). Direct substitution is only possible in applications designed to operate within these lower specifications. Circuits specified for the full 75V/183A performance of the IRFS7734TRLPBF cannot use the FDB035AN06A0 without circuit redesign and validation.

Q: Are the packages physically identical?

A: Both parts use TO-263 D2PAK Surface Mount packaging with 2 Leads + Tab configuration. The physical footprint and pin layout are compatible, allowing direct PCB placement. However, electrical performance differences require circuit-level verification before substitution.

Q: What is the significance of the gate charge difference?

A: The IRFS7734TRLPBF has a gate charge of 270 nC at 10V, while the FDB035AN06A0 has 124 nC. Lower gate charge reduces switching losses and allows faster switching speeds with the same driver circuit. This is a secondary consideration and does not override the primary voltage and current rating limitations.

Q: Are both parts RoHS3 compliant?

A: The IRFS7734TRLPBF is explicitly RoHS3 compliant. The FDB035AN06A0 RoHS status is not specified in the provided data. Compliance verification with the FDB035AN06A0 manufacturer is required before use in applications with RoHS3 requirements.

Q: What is the moisture sensitivity level for both parts?

A: The IRFS7734TRLPBF is rated MSL Level 1 (Unlimited), meaning no moisture sensitivity restrictions apply to storage or handling. The FDB035AN06A0 MSL rating is not specified in the provided data.

Q: Can I use the FDB035AN06A0 in a 75V circuit?

A: No. The FDB035AN06A0 is rated for maximum 60V Vdss. Using it in a 75V circuit exceeds the device rating and risks permanent damage or failure.