IRLML2803TR N-Channel 30V 1.2A MOSFET Equivalent & Substitute Parts

Part Overview

The IRLML2803TR is an N-Channel MOSFET manufactured by Infineon Technologies, designed for surface mount applications in the SOT-23 package. This device features a 30V drain-to-source voltage rating with 1.2A continuous drain current capability and is classified as obsolete. Due to its obsolete product status, identifying equivalent and substitute parts is essential for design continuity, production planning, and long-term component availability. The following substitute parts maintain electrical compatibility while offering improved availability and compliance status.

Substiute Parts

IRLML2803TR

Infineon TechnologiesIn Stock: 19813IRLML2803TR Datasheet

Current PartRFQ

IRLML2803TRPBF

Infineon TechnologiesIn Stock: 245508IRLML2803TRPBF Datasheet

DirectRFQ

PMV37EN2R

Nexperia USA Inc.In Stock: 23182PMV37EN2R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the IRLML2803TR are identified based on strict electrical and mechanical parameter matching within the N-Channel MOSFET category. The substitution logic is based on the following criteria:

Primary Matching Criteria:

• FET Type: N-Channel (required match)
• Drain to Source Voltage (Vdss): 30V (required match)
• Package / Case: TO-236-3, SC-59, SOT-23-3 (required match for mechanical compatibility)
• Mounting Type: Surface Mount (required match)
• Moisture Sensitivity Level: 1 (Unlimited) (required match)

Secondary Compatibility Criteria:

• Continuous Drain Current (Id) @ 25°C: Equal to or greater than 1.2A
• Rds On (Max) @ Id, Vgs: Equal to or less than 250mOhm
• Vgs(th) (Max) @ Id: Equal to or less than 1V
• Gate Charge (Qg) (Max) @ Vgs: Equal to or less than 5nC
• Input Capacitance (Ciss) (Max) @ Vds: Equal to or less than 85pF

Substitute parts meeting all primary criteria and maintaining or improving secondary electrical parameters are classified as direct equivalents or upgrades suitable for circuit replacement.

Parameter Comparison

Engineering Selection Recommendations

IRLML2803TRPBF (Infineon Technologies)

The IRLML2803TRPBF is the direct equivalent of the IRLML2803TR, manufactured by the same supplier with identical electrical specifications. This part is classified as Active product status with ROHS3 compliance, addressing the obsolescence and regulatory compliance limitations of the original part. The IRLML2803TRPBF maintains 1.2A continuous drain current, 250mOhm Rds On, and all other electrical parameters within specification. This substitute is recommended as the primary replacement for direct circuit substitution without design modification.

PMV37EN2R (Nexperia USA Inc.)

The PMV37EN2R is a performance-enhanced substitute manufactured by Nexperia USA Inc., offering superior electrical characteristics while maintaining the same 30V voltage rating and SOT-23 package form factor. This part provides 4.5A continuous drain current (3.75× higher than the original), 36mOhm Rds On (86% reduction), and improved thermal performance with 5W power dissipation at Tc. The PMV37EN2R is classified as Active product status with ROHS3 compliance. The increased current capability and reduced on-resistance make this part suitable for applications requiring enhanced performance margins or thermal efficiency. Gate charge and input capacitance are slightly elevated but remain within acceptable ranges for most switching applications.

Both substitute parts are available in active production with full RoHS3 compliance and unlimited moisture sensitivity rating, ensuring long-term supply chain stability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can IRLML2803TRPBF be used as a direct replacement for IRLML2803TR?

A: Yes. The IRLML2803TRPBF is the direct equivalent with identical electrical specifications (1.2A, 30V, 250mOhm Rds On, SOT-23 package). The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 vs. non-compliant). No circuit modification is required.

Q: What are the advantages of using PMV37EN2R over IRLML2803TRPBF?

A: The PMV37EN2R provides higher continuous drain current (4.5A vs. 1.2A), significantly lower on-resistance (36mOhm vs. 250mOhm), and improved power dissipation capability (5W at Tc vs. 540mW at Ta). These characteristics result in reduced heat generation and improved efficiency in switching applications. However, gate charge and input capacitance are slightly higher.

Q: Are all three parts pin-compatible?

A: Yes. All three parts use the TO-236-3 / SC-59 / SOT-23-3 package with identical pin configuration, enabling direct PCB-level substitution without layout modification.

Q: What is the impact of the higher Vgs(th) in PMV37EN2R?

A: The PMV37EN2R has a maximum Vgs(th) of 2V compared to 1V in the IRLML2803TR. This means the gate threshold voltage is higher, requiring slightly higher gate drive voltage for full conduction. In most applications using standard 5V or 10V gate drive, this difference is not significant. Verify gate drive voltage compatibility in your specific circuit.

Q: Does the increased input capacitance of PMV37EN2R affect circuit performance?

A: The PMV37EN2R has 209pF input capacitance at 15V compared to 85pF at 25V in the original part. Higher input capacitance increases gate charge requirements and may slightly increase switching losses in high-frequency applications. Evaluate switching frequency and gate drive capability before selection.

Q: Are there any compliance or supply chain advantages to choosing one substitute over the other?

A: Both IRLML2803TRPBF and PMV37EN2R are Active products with ROHS3 compliance and unlimited MSL rating. IRLML2803TRPBF offers identical performance with better supply availability from Infineon. PMV37EN2R offers performance enhancement with Nexperia supply chain. Both ensure long-term availability and regulatory compliance compared to the obsolete original part.

Q: Can PMV37EN2R be used in applications designed for 1.2A operation?

A: Yes. The PMV37EN2R is rated for 4.5A continuous drain current, making it suitable for any application requiring 1.2A or less. The higher current rating provides design margin and thermal headroom. Verify that the circuit's thermal design can accommodate the lower on-resistance and resulting reduced power dissipation.