IRL3215 Equivalent & Substitute Parts

Part Overview

The IRL3215 is an N-Channel MOSFET manufactured by Infineon Technologies, rated for 150V drain-to-source voltage with 12A continuous drain current at 25°C. The device is housed in a TO-220AB through-hole package and is rated for 80W maximum power dissipation. The IRL3215 is classified as obsolete, necessitating identification of functionally equivalent substitute components for ongoing design support and procurement requirements.

Key Parameters

Parameter	Value
Drain to Source Voltage (Vdss)	150 V
Continuous Drain Current (Id) @ 25°C	12 A
Power Dissipation (Max)	80 W
Rds On (Max) @ Id, Vgs	166 mOhm @ 7.2A, 10V
Gate Charge (Qg) (Max)	35 nC @ 5 V
Operating Temperature Range	-55°C to 175°C
Package Type	TO-220AB
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution of the IRL3215 is based on the following critical electrical and mechanical parameters:

Voltage Rating Compatibility: The substitute part must maintain the 150V Vdss rating to ensure safe operation within the original circuit design envelope.

Current Capacity: The substitute part must support continuous drain current equal to or greater than 12A at 25°C to handle the design load without thermal stress.

Power Dissipation: The substitute part must support 80W maximum power dissipation to maintain thermal performance equivalence.

Package and Mounting: The substitute part must use the TO-220AB package with through-hole mounting to ensure mechanical and thermal interface compatibility with existing PCB layouts and heatsinking arrangements.

Operating Temperature Range: The substitute part must support the -55°C to 175°C operating temperature range to maintain functional equivalence across all environmental conditions.

The IRFB4019PBF meets all substitution criteria through matching voltage rating, exceeding current capacity, maintaining power dissipation rating, using identical packaging, and supporting the required temperature range.

Parameter Comparison

Parameter	IRL3215	IRFB4019PBF	Compatibility
Drain to Source Voltage (Vdss)	150 V	150 V	Match
Continuous Drain Current (Id) @ 25°C	12 A	17 A	Substitute Exceeds
Power Dissipation (Max)	80 W	80 W	Match
Rds On (Max) @ Id, Vgs	166 mOhm @ 7.2A, 10V	95 mOhm @ 10A, 10V	Substitute Superior
Gate Charge (Qg) (Max)	35 nC @ 5 V	20 nC @ 10 V	Substitute Superior
Operating Temperature Range	-55°C to 175°C	-55°C to 175°C	Match
Package Type	TO-220AB	TO-220AB	Match
Mounting Type	Through Hole	Through Hole	Match
Vgs (Max)	±16 V	±20 V	Substitute Exceeds
Input Capacitance (Ciss) (Max)	775 pF @ 25 V	800 pF @ 50 V	Comparable

Engineering Selection Recommendations

The IRFB4019PBF is a direct substitute for the obsolete IRL3215. The substitute part maintains electrical equivalence across all critical parameters while providing performance improvements in on-resistance and gate charge characteristics.

Product Status Consideration: The IRL3215 is classified as obsolete, while the IRFB4019PBF is active in production. Selection of the IRFB4019PBF ensures long-term component availability and supply chain continuity.

Compliance Status: The IRFB4019PBF is RoHS3 compliant, whereas the IRL3215 is RoHS non-compliant. This compliance improvement aligns with current regulatory requirements for electronic component procurement.

Electrical Performance: The IRFB4019PBF demonstrates superior electrical characteristics, including lower on-resistance (95 mOhm versus 166 mOhm) and reduced gate charge (20 nC versus 35 nC). These improvements result in lower switching losses and reduced thermal generation during operation.

Mechanical and Thermal Interface: Both devices use identical TO-220AB packaging and through-hole mounting, ensuring direct PCB layout compatibility without redesign requirements.

Frequently Asked Questions (FAQ)

Q: Can the IRFB4019PBF be used as a direct replacement for the IRL3215 without PCB modifications?

A: Yes. Both devices use the TO-220AB package with identical pin configuration and through-hole mounting. No PCB layout changes are required for mechanical substitution.

Q: What is the significance of the higher current rating (17A versus 12A) on the IRFB4019PBF?

A: The higher current rating provides design margin and thermal headroom. The substitute part can handle the original 12A design load with reduced thermal stress, extending component life and improving reliability.

Q: Does the lower on-resistance of the IRFB4019PBF affect circuit operation?

A: Lower on-resistance reduces power dissipation during conduction, resulting in lower junction temperatures and improved thermal performance. This is a beneficial characteristic that does not negatively impact circuit function.

Q: Are there any gate drive voltage considerations when substituting the IRFB4019PBF for the IRL3215?

A: The IRFB4019PBF has a higher maximum gate voltage rating (±20V versus ±16V). Existing gate drive circuits designed for the IRL3215 operate within the IRFB4019PBF specifications and require no modification.

Q: What is the impact of the reduced gate charge on switching performance?

A: Reduced gate charge (20 nC versus 35 nC) decreases the charge required to switch the device, resulting in faster switching transitions and lower switching losses. This improves overall circuit efficiency.

Q: Is the IRFB4019PBF available in the same packaging format?

A: Yes. The IRFB4019PBF is supplied in TO-220AB through-hole packaging, identical to the IRL3215. Packaging compatibility is confirmed for direct substitution.

Q: What compliance advantages does the IRFB4019PBF provide?

A: The IRFB4019PBF is RoHS3 compliant and REACH unaffected, meeting current regulatory requirements. The obsolete IRL3215 does not carry these certifications, making the IRFB4019PBF the appropriate choice for new designs and procurement.

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