IRL3714ZLPBF Equivalent & Substitute Parts

Part Overview

The IRL3714ZLPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 20V drain-to-source voltage with 36A continuous drain current at 25°C. This device is packaged in TO-262-3 (I2PAK) configuration for through-hole mounting applications. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity.

Substiute Parts

IRL3714ZLPBF

Infineon TechnologiesIn Stock: 1076IRL3714ZLPBF Datasheet

Current PartRFQ

IRFZ14L

Vishay SiliconixIn Stock: 687IRFZ14L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRL3714ZLPBF requires evaluation based on the following critical parameters:

Voltage Rating Compatibility: The main part operates at 20V Vdss. Substitute parts must maintain equal or higher voltage ratings to ensure safe operation within the original circuit design envelope.

Current Handling Capacity: The 36A continuous drain current specification defines the thermal and electrical load requirements. Substitute parts must support equivalent or superior current ratings at the same or lower junction temperatures.

On-State Resistance (Rds On): The 16 mOhm specification at 15A, 10V directly impacts power dissipation and thermal performance. Lower Rds On values indicate superior efficiency; higher values increase heat generation.

Package and Mounting: The TO-262-3 through-hole package is a mechanical and thermal interface requirement. Substitute parts must use identical or mechanically compatible packaging.

Gate Drive Characteristics: Vgs(th) and gate charge specifications determine drive circuit compatibility and switching performance.

The IRFZ14L substitute part is evaluated against these parameters to determine functional equivalence within circuit application constraints.

Parameter Comparison

Engineering Selection Recommendations

Voltage Rating Consideration: The IRFZ14L features a 60V Vdss rating, which exceeds the 20V requirement of the original IRL3714ZLPBF. This higher voltage rating provides additional design margin and does not create incompatibility in circuits designed for 20V operation.

Current Rating Limitation: The IRFZ14L is rated for 10A continuous drain current, compared to the 36A specification of the IRL3714ZLPBF. This represents a significant reduction in current-handling capacity. Substitution is valid only in applications where the actual circuit current demand does not exceed 10A.

On-State Resistance Trade-off: The IRFZ14L exhibits 200 mOhm Rds On at 6A, 10V, compared to 16 mOhm for the main part at 15A, 10V. Higher on-state resistance results in increased power dissipation and heat generation at equivalent current levels. Circuit thermal design must accommodate this characteristic.

Package Compatibility: Both parts use TO-262-3 through-hole packaging, ensuring mechanical and thermal interface compatibility with existing PCB layouts and heat sinking arrangements.

Product Status: The IRFZ14L maintains active product status with ongoing manufacturer support, whereas the IRL3714ZLPBF is obsolete. Selection of the IRFZ14L ensures long-term component availability and supply chain continuity.

Compliance and Certifications: The IRFZ14L is RoHS non-compliant, whereas compliance status for the main part is not specified. Applications requiring RoHS compliance must evaluate this difference against regulatory requirements.

Frequently Asked Questions (FAQ)

Q: Can the IRFZ14L directly replace the IRL3714ZLPBF in all applications?

A: Direct replacement is limited by current rating. The IRFZ14L supports maximum 10A continuous drain current versus 36A for the original part. Substitution is valid only when circuit current requirements do not exceed 10A. Higher current applications require alternative parts with higher current ratings.

Q: What is the impact of the higher Rds On value in the IRFZ14L?

A: The IRFZ14L exhibits 200 mOhm on-state resistance compared to 16 mOhm for the IRL3714ZLPBF. At equivalent current levels, higher Rds On generates proportionally greater power dissipation. Circuit thermal analysis must verify that heat dissipation capacity accommodates this increase without exceeding maximum junction temperature limits.

Q: Are the TO-262-3 packages mechanically identical?

A: Both the IRL3714ZLPBF and IRFZ14L use TO-262-3 long-lead through-hole packaging. Mechanical compatibility with existing PCB footprints and heat sink mounting arrangements is maintained.

Q: Does the higher 60V Vdss rating of the IRFZ14L create circuit compatibility issues?

A: No. The 60V rating of the IRFZ14L exceeds the 20V circuit requirement, providing additional voltage margin. This does not create incompatibility in circuits designed for 20V operation.

Q: What is the significance of the IRFZ14L being classified as active product status?

A: Active product status indicates ongoing manufacturer support, continued production, and assured long-term availability. The obsolete status of the IRL3714ZLPBF creates procurement risk; the IRFZ14L addresses this by providing a currently supported alternative.

Q: How do gate drive characteristics compare between these parts?

A: The IRL3714ZLPBF has Vgs(th) of 2.55V at 250µA, while the IRFZ14L specifies 4V at the same current. The higher threshold voltage of the IRFZ14L may require adjustment of gate drive circuit design to ensure reliable switching performance, particularly in low-voltage drive applications.