IRF3415L N-Channel MOSFET 150V 43A TO-262 Equivalent & Substitute Parts

Part Overview

The IRF3415L is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 150V drain-to-source voltage with 43A continuous drain current at 25°C. This device is housed in a TO-262 package and is part of the HEXFET® series. The IRF3415L is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support, maintenance, and production continuity. Substitution requires matching critical electrical parameters including voltage rating, current capacity, on-resistance characteristics, and thermal performance within the specified operating temperature range of -55°C to 175°C.

Substiute Parts

IRF3415L

Infineon TechnologiesIn Stock: 901IRF3415L Datasheet

Current PartRFQ

IRFZ14L

Vishay SiliconixIn Stock: 687IRFZ14L Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the IRF3415L requires strict adherence to the following electrical and mechanical criteria:

Mandatory Matching Parameters:

• FET Type: N-Channel only
• Technology: MOSFET (Metal Oxide)
• Package Type: TO-262 or TO-262-3 (Through Hole)
• Drain-to-Source Voltage (Vdss): Must equal or exceed 150V
• Continuous Drain Current (Id): Must equal or exceed 43A at 25°C
• Gate Threshold Voltage (Vgs(th)): Must be compatible with 4V maximum specification
• Operating Temperature Range: Must support -55°C to 175°C
• Gate Charge (Qg): Lower values acceptable; higher values require circuit validation
• On-Resistance (Rds On): Lower values acceptable; higher values require thermal analysis

Compatibility Constraints:

• Maximum Gate Voltage (Vgs Max): ±20V specification must be maintained
• Mounting Type: Through Hole only
• Moisture Sensitivity Level: MSL 1 (Unlimited) preferred for reliability

The IRFZ14L does not meet the mandatory substitution criteria for this application due to insufficient voltage rating (60V vs. 150V required) and reduced current capacity (10A vs. 43A required). This part is listed as a reference only and is not suitable as a direct substitute.

Parameter Comparison

Engineering Selection Recommendations

The IRF3415L is classified as obsolete, necessitating identification of suitable alternatives for new designs and production support. However, based on the provided substitute part list, the IRFZ14L does not qualify as a functional equivalent due to critical parameter mismatches:

Voltage Rating Deficiency: The IRFZ14L is rated for 60V maximum drain-to-source voltage, which is insufficient for applications requiring the IRF3415L's 150V rating. Use of an undersized voltage-rated device creates unacceptable risk of device failure and circuit damage.

Current Rating Deficiency: The IRFZ14L supports only 10A continuous drain current compared to the IRF3415L's 43A specification. This 77% reduction in current capacity makes the IRFZ14L unsuitable for equivalent functionality.

Thermal Performance: The IRFZ14L's maximum power dissipation of 43W (Tc) is significantly lower than the IRF3415L's 200W (Tc), indicating reduced thermal capability and unsuitable for high-power applications.

Product Status Consideration: While the IRFZ14L maintains active product status compared to the IRF3415L's obsolete classification, this advantage does not offset the fundamental electrical incompatibility.

For applications currently using the IRF3415L, direct substitution with the IRFZ14L is not recommended. Alternative approaches include sourcing remaining IRF3415L inventory or consulting with component distributors for equivalent parts meeting the full 150V/43A specification.

Frequently Asked Questions (FAQ)

Q: Can the IRFZ14L replace the IRF3415L in my circuit?

A: No. The IRFZ14L has insufficient voltage rating (60V vs. 150V required) and current capacity (10A vs. 43A required). Direct substitution will result in device failure and potential circuit damage.

Q: What are the critical parameters that determine substitution compatibility?

A: Substitution requires matching: N-Channel FET type, MOSFET technology, TO-262 package, minimum 150V Vdss rating, minimum 43A continuous drain current, compatible gate threshold voltage (4V maximum), and operating temperature range of -55°C to 175°C.

Q: Why is the IRF3415L obsolete?

A: The IRF3415L is classified as obsolete by Infineon Technologies. This status indicates the manufacturer has discontinued production and support. Existing inventory may be available through authorized distributors.

Q: Are there package compatibility considerations between TO-262 and TO-262-3?

A: Both the IRF3415L and IRFZ14L use TO-262-3 Long Leads packaging with identical through-hole mounting characteristics. Package compatibility is not a limiting factor for substitution; electrical parameters are the determining criteria.

Q: What should I do if I cannot find a suitable substitute?

A: Contact authorized component distributors to verify remaining IRF3415L inventory. Alternatively, consult with Infineon Technologies or component engineering support to identify equivalent parts meeting the full 150V/43A specification from current product lines.

Q: Does RoHS compliance affect substitution decisions?

A: Both the IRF3415L and IRFZ14L are RoHS non-compliant. If RoHS compliance is required for your application, additional research into compliant alternatives meeting the 150V/43A specification is necessary.

Q: How do gate charge differences affect circuit performance?

A: The IRF3415L has 200 nC gate charge compared to IRFZ14L's 11 nC. Lower gate charge reduces driver circuit stress and switching losses. However, this parameter alone does not justify substitution when voltage and current ratings are insufficient.