IRFR3711TRLPBF Equivalent & Substitute Parts

Part Overview

The IRFR3711TRLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 20V drain-to-source voltage with 100A continuous drain current at Tc. This device is packaged in TO-252-3 (DPAK) surface mount configuration and belongs to the HEXFET® series. The part is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. Substitute parts must maintain compatibility with the electrical specifications and mechanical form factor while meeting current availability and compliance requirements.

Substiute Parts

IRFR3711TRLPBF

Infineon TechnologiesIn Stock: 12306IRFR3711TRLPBF Datasheet

Current PartRFQ

IPD50N03S207ATMA1

Infineon TechnologiesIn Stock: 47685IPD50N03S207ATMA1 Datasheet

MFR RecommendedRFQ

IRFR3711ZTRPBF

Infineon TechnologiesIn Stock: 6124IRFR3711ZTRPBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRFR3711TRLPBF are selected based on the following criteria:

Electrical Compatibility Parameters:

• Drain-to-Source Voltage (Vdss) must be equal to or greater than 20V
• Continuous Drain Current (Id) must support the application requirements
• On-State Resistance (Rds On) must be within acceptable operating margins
• Gate Threshold Voltage (Vgs(th)) must be compatible with drive circuitry
• Operating temperature range must encompass the application environment

Mechanical Compatibility Parameters:

• Package type must be TO-252-3 (DPAK) surface mount configuration
• Lead count and tab configuration must match the original footprint
• Moisture Sensitivity Level must be MSL 1 or equivalent

Compliance Parameters:

• RoHS3 compliance required
• REACH unaffected status required
• ECCN and HTSUS classifications must align

Two substitute parts meet these criteria with varying trade-offs in current rating and voltage rating.

Parameter Comparison

Engineering Selection Recommendations

IRFR3711ZTRPBF (Substitute 1):

This part maintains identical voltage rating (20V Vdss) and nearly equivalent current rating (93A versus 100A). It is from the same HEXFET® series and uses the same TO-252-3 (DPAK) package. The lower gate charge (27 nC versus 44 nC) and reduced input capacitance (2160 pF versus 2980 pF) provide improved switching characteristics. However, this part carries "Not For New Designs" status, indicating limited long-term availability. It is suitable for legacy system maintenance and repair applications where design changes are not feasible. Extended operating temperature range (-55°C to 175°C) provides additional thermal margin compared to the main part.

IPD50N03S207ATMA1 (Substitute 2):

This part is classified as Active, ensuring ongoing availability and manufacturing support. It belongs to the OptiMOS™ series with higher voltage rating (30V Vdss) and higher power dissipation capability (136W versus 120W). The continuous drain current is reduced to 50A, which represents a significant derating from the original 100A specification. This substitute is appropriate for applications where the 20V voltage rating is not a critical constraint and where current requirements do not exceed 50A. The higher gate charge (68 nC) and higher input capacitance (2000 pF) may require gate drive circuit adjustments. This part is recommended for new designs requiring long-term component availability.

Selection Criteria:

• For legacy system support with minimal design changes: IRFR3711ZTRPBF
• For new designs with long-term availability requirements: IPD50N03S207ATMA1
• For applications requiring full 100A current rating: neither substitute provides complete electrical equivalence; alternative sourcing strategies may be necessary

Frequently Asked Questions (FAQ)

Q: Can IRFR3711ZTRPBF be used as a direct replacement for IRFR3711TRLPBF?

A: IRFR3711ZTRPBF is electrically compatible for most applications. Both devices share identical 20V Vdss rating, nearly equivalent 93A/100A current ratings, and identical TO-252-3 (DPAK) package. The lower gate charge and input capacitance of IRFR3711ZTRPBF may improve switching performance. However, "Not For New Designs" status indicates limited future availability. Use this substitute for maintenance and repair of existing systems only.

Q: Is IPD50N03S207ATMA1 suitable for applications requiring 100A continuous current?

A: No. IPD50N03S207ATMA1 is rated for 50A continuous drain current, representing a 50% reduction from the IRFR3711TRLPBF specification. This substitute is suitable only for applications where current requirements do not exceed 50A. For higher current applications, alternative component sourcing is required.

Q: What are the package compatibility considerations?

A: All three parts (IRFR3711TRLPBF, IRFR3711ZTRPBF, and IPD50N03S207ATMA1) use identical TO-252-3 (DPAK) surface mount packaging with 2 leads plus tab configuration. PCB footprints are directly compatible. No layout modifications are required for package substitution.

Q: How do gate charge differences affect circuit design?

A: IRFR3711TRLPBF has 44 nC gate charge at 4.5V, while IRFR3711ZTRPBF has 27 nC at 4.5V, and IPD50N03S207ATMA1 has 68 nC at 10V. Lower gate charge reduces gate drive power requirements and improves switching speed. Higher gate charge increases gate drive circuit demands. Gate drive circuits must be verified for compatibility with the selected substitute part's gate charge specification.

Q: Are there compliance differences between the substitute parts?

A: All three parts are ROHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. Compliance status is equivalent across all options. ECCN and HTSUS classifications are identical.

Q: What is the significance of "Obsolete" versus "Not For New Designs" versus "Active" status?

A: Obsolete status (IRFR3711TRLPBF) indicates the part is no longer manufactured and existing inventory is limited. "Not For New Designs" status (IRFR3711ZTRPBF) indicates the part remains available but is being phased out; it is suitable for legacy system support only. Active status (IPD50N03S207ATMA1) indicates ongoing production and long-term availability, making it the preferred choice for new designs.

Q: Can operating temperature range differences affect substitution decisions?

A: IRFR3711TRLPBF operates from -55°C to 150°C, while both substitutes operate from -55°C to 175°C. The extended upper temperature limit of the substitutes provides additional thermal margin. If the application operates near 150°C, the substitutes offer improved reliability. For applications with lower temperature requirements, this difference is not significant.