IRL3714LPBF Equivalent & Substitute Parts

Part Overview

The IRL3714LPBF is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 20V drain-to-source voltage with 36A continuous drain current in a Through Hole TO-262 package. This device is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The HEXFET® series component operates across a temperature range of -55°C to 175°C and dissipates up to 47W at the case temperature.

Substiute Parts

IRL3714LPBF

Infineon TechnologiesIn Stock: 4339IRL3714LPBF Datasheet

Current PartRFQ

IRFZ14L

Vishay SiliconixIn Stock: 687IRFZ14L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution analysis for the IRL3714LPBF is based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• FET Type: N-Channel topology must be maintained
• Mounting Type: Through Hole configuration required
• Package: TO-262-3 Long Leads, I2PAK, TO-262AA compatibility
• Operating Temperature Range: -55°C to 175°C (TJ) minimum requirement
• Gate Voltage Rating (Vgs Max): ±20V compatibility
• Moisture Sensitivity Level: MSL 1 (Unlimited)

Functional Substitution Parameters:

• Drain-to-Source Voltage (Vdss): Must equal or exceed 20V
• Continuous Drain Current (Id): Must equal or exceed 36A at 25°C
• On-State Resistance (Rds On): Lower values indicate superior performance; maximum acceptable determined by circuit requirements
• Gate Charge (Qg): Lower values reduce switching losses
• Power Dissipation: Must support thermal requirements of the application

The IRFZ14L does not meet the continuous drain current requirement (10A vs. 36A required), indicating this substitute is not electrically compatible for direct replacement in applications requiring the full 36A rating.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The IRL3714LPBF is classified as Obsolete. The IRFZ14L is classified as Active, providing ongoing manufacturer support, availability, and potential process improvements. However, direct substitution is not recommended based on electrical parameters.

Compliance and Certification: Both devices share identical ECCN (EAR99) and HTSUS (8541.29.0095) classifications, indicating equivalent export control and tariff treatment. The IRL3714LPBF maintains REACH Unaffected status, while the IRFZ14L is RoHS non-compliant. Both devices carry MSL 1 (Unlimited) moisture sensitivity ratings.

Electrical Incompatibility: The IRFZ14L operates at a higher voltage rating (60V vs. 20V Vdss) but provides significantly reduced continuous drain current (10A vs. 36A). This substitution is unsuitable for applications requiring the full 36A current capacity of the IRL3714LPBF. The IRFZ14L exhibits higher on-state resistance (200 mOhm vs. 20 mOhm), resulting in increased power dissipation and heat generation in equivalent current conditions.

Thermal Performance: While both devices support identical maximum case temperature dissipation ratings (47W and 43W respectively), the IRL3714LPBF's superior current handling and lower on-state resistance provide better thermal efficiency in high-current applications.

Frequently Asked Questions (FAQ)

Q: Can the IRFZ14L directly replace the IRL3714LPBF in existing designs?

A: No. The IRFZ14L is not a direct substitute. While both are N-Channel MOSFETs in TO-262-3 packages with identical operating temperature ranges, the IRFZ14L's continuous drain current rating (10A) is insufficient for applications requiring the IRL3714LPBF's 36A capacity. Additionally, the IRFZ14L's on-state resistance is 10 times higher (200 mOhm vs. 20 mOhm), causing excessive power dissipation in high-current circuits.

Q: What are the primary electrical differences between these devices?

A: The main differences are: (1) Drain-to-Source Voltage: IRL3714LPBF rated for 20V, IRFZ14L rated for 60V; (2) Continuous Drain Current: IRL3714LPBF rated for 36A, IRFZ14L rated for 10A; (3) On-State Resistance: IRL3714LPBF 20 mOhm, IRFZ14L 200 mOhm; (4) Gate Threshold Voltage: IRL3714LPBF 3V, IRFZ14L 4V.

Q: Are the packages physically compatible?

A: Yes. Both devices use the TO-262-3 Long Leads package (I2PAK, TO-262AA), allowing physical interchangeability on printed circuit boards. However, electrical incompatibility prevents functional substitution.

Q: What should be done regarding the obsolete status of the IRL3714LPBF?

A: For new designs, select an active N-Channel MOSFET with equivalent electrical specifications: 20V Vdss rating, 36A continuous drain current capability, and TO-262-3 package compatibility. For existing designs using the IRL3714LPBF, consult the component datasheet and circuit requirements to identify suitable alternatives from active product lines.

Q: How do compliance ratings affect substitution decisions?

A: Both devices share identical ECCN (EAR99) and HTSUS classifications, indicating equivalent export control treatment. The IRL3714LPBF's REACH Unaffected status differs from the IRFZ14L's RoHS non-compliant status. Compliance requirements vary by application and region; verify regulatory requirements before substitution.

Q: What is the significance of the MSL 1 (Unlimited) rating?

A: MSL 1 (Unlimited) indicates the lowest moisture sensitivity level, meaning these devices do not require special moisture control during storage, handling, or assembly. Both the IRL3714LPBF and IRFZ14L share this rating, eliminating moisture sensitivity as a substitution constraint.