RFP3055LE N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The RFP3055LE is an N-Channel MOSFET manufactured by onsemi, rated for 60V drain-to-source voltage with 11A continuous drain current at 25°C. The device is housed in a TO-220-3 through-hole package and is designed for general-purpose switching applications requiring moderate current handling and voltage ratings.

The RFP3055LE carries an Obsolete product status. Identification of equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications currently utilizing this component.

Substiute Parts

RFP3055LE

onsemiIn Stock: 15269RFP3055LE Datasheet

Current PartRFQ

MTP3055VL

onsemiIn Stock: 15395MTP3055VL Datasheet

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IRLZ24NPBF

Infineon TechnologiesIn Stock: 15330IRLZ24NPBF Datasheet

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STP16NF06

STMicroelectronicsIn Stock: 37115STP16NF06 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the RFP3055LE is determined by the following critical parameters:

Voltage Rating Compatibility: All substitute parts must maintain a Vdss rating equal to or greater than 60V to ensure safe operation within the original design envelope.

Current Handling Capability: Substitute parts must support a continuous drain current (Id) at 25°C equal to or greater than 11A to meet or exceed the original performance specification.

Package and Mounting: All substitute parts must use through-hole mounting in a TO-220 family package (TO-220-3 or TO-220AB) to ensure mechanical and electrical compatibility with existing PCB layouts and thermal management solutions.

Operating Temperature Range: Substitute parts must support the full operating temperature range of -55°C to 175°C (TJ) or a range that encompasses this specification.

Technology and FET Type: All substitutes must be N-Channel MOSFETs using metal-oxide semiconductor technology to maintain functional equivalence.

The three substitute parts listed below satisfy these criteria with varying levels of performance enhancement and product status.

Parameter Comparison

Engineering Selection Recommendations

MTP3055VL (onsemi): This part is the primary substitute for the RFP3055LE. Both devices are manufactured by onsemi and share the same 60V Vdss rating and TO-220-3 package. The MTP3055VL provides 12A continuous drain current, exceeding the 11A requirement of the original part. The device carries Active product status and is ROHS3 compliant, ensuring long-term availability and regulatory compliance. The extended operating temperature range (-65°C to 175°C) provides additional thermal margin. This part is the recommended direct replacement for new production and design continuity.

STP16NF06 (STMicroelectronics): This part maintains the 60V Vdss rating and provides 16A continuous drain current, offering significant performance headroom above the original 11A specification. The device is Active and ROHS3 compliant. The TO-220 package is mechanically compatible with TO-220-3 layouts. This part is suitable for applications where enhanced current handling and improved thermal performance are beneficial.

IRLZ24NPBF (Infineon Technologies): This part provides the highest current rating at 18A and the lowest on-resistance (60 mOhm @ 11A, 10V), delivering superior performance characteristics. However, the Vdss rating is 55V, which is 5V below the original specification. The device carries Not For New Designs status, indicating limited future availability. This part is suitable only for legacy system maintenance where the reduced voltage rating does not compromise circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the MTP3055VL directly replace the RFP3055LE without PCB modifications?

A: Yes. Both parts use the TO-220-3 package with identical pin configurations and through-hole mounting. No PCB layout changes are required. The MTP3055VL is pin-compatible and functionally equivalent.

Q: What is the significance of the voltage rating difference between the RFP3055LE (60V) and IRLZ24NPBF (55V)?

A: The 5V difference represents a 8.3% reduction in maximum drain-to-source voltage rating. For applications operating near the 60V limit, this reduction may compromise circuit safety margins. The IRLZ24NPBF is suitable only for designs with confirmed operating voltages below 55V.

Q: Why does the STP16NF06 have a different on-resistance specification (100 mOhm @ 8A, 10V) compared to the RFP3055LE (107 mOhm @ 8A, 5V)?

A: On-resistance varies with both drain current and gate-source voltage. The STP16NF06 specification is measured at 10V gate drive, while the RFP3055LE is measured at 5V gate drive. Higher gate voltage typically results in lower on-resistance. Direct comparison requires evaluation at identical test conditions.

Q: Is the MTP3055VL suitable for new design implementations?

A: Yes. The MTP3055VL carries Active product status and is ROHS3 compliant, making it appropriate for new designs. It is the recommended choice for applications requiring long-term supply chain stability and regulatory compliance.

Q: What thermal considerations apply when substituting these parts?

A: All substitute parts are rated for the same maximum operating junction temperature (175°C). The MTP3055VL and STP16NF06 provide higher power dissipation ratings (48W and 45W respectively) compared to the RFP3055LE (38W), allowing for improved thermal performance in current-limited applications. Thermal management design should account for the specific on-resistance and current profile of the selected substitute.

Q: Are there package compatibility issues between TO-220-3 and TO-220AB variants?

A: TO-220-3 and TO-220AB are mechanically and electrically compatible for three-terminal MOSFET applications. Both use identical pin spacing and through-hole mounting. PCB layouts designed for TO-220-3 will accommodate TO-220AB devices without modification.