IRLMS1902TRPBF N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The IRLMS1902TRPBF is an N-Channel MOSFET manufactured by Infineon Technologies, designed for surface mount applications in the Micro6™ (TSOP-6) package. This device operates at 20V drain-to-source voltage with a continuous drain current rating of 3.2A at 25°C. The product is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across voltage, current, and thermal specifications while accommodating package standardization requirements.

Substiute Parts

IRLMS1902TRPBF

Infineon TechnologiesIn Stock: 2152IRLMS1902TRPBF Datasheet

Current PartRFQ

ZXMN2A01E6TA

Diodes IncorporatedIn Stock: 38352ZXMN2A01E6TA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the IRLMS1902TRPBF is determined by the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 20V
• Continuous Drain Current (Id) must meet or exceed 3.2A at 25°C
• Gate Threshold Voltage (Vgs(th)) must remain within ±12V maximum gate voltage specification
• On-State Resistance (Rds On) characteristics must support equivalent power dissipation performance
• Operating temperature range must span -55°C to 150°C (TJ)

Package and Mechanical Compatibility:

• Surface mount configuration required
• SOT-23-6 package footprint compatibility
• Moisture Sensitivity Level (MSL) of 1 (Unlimited) acceptable

Regulatory and Compliance Requirements:

• ROHS3 compliance mandatory
• REACH Unaffected status required
• EAR99 export classification alignment

The ZXMN2A01E6TA from Diodes Incorporated satisfies these substitution criteria through equivalent voltage rating, compatible package geometry, and matching regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: ZXMN2A01E6TA

The ZXMN2A01E6TA qualifies as a functional substitute based on the following engineering criteria:

Voltage and Package Alignment: Both devices operate at identical 20V Vdss ratings and utilize the SOT-23-6 surface mount package, ensuring direct PCB footprint compatibility without layout modifications.

Regulatory and Compliance Alignment: Both parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, satisfying procurement and supply chain requirements without additional compliance documentation.

Current Rating Consideration: The ZXMN2A01E6TA is rated for 2.5A continuous drain current, compared to the IRLMS1902TRPBF's 3.2A rating. Applications operating below 2.5A at 25°C remain fully compatible. Applications requiring sustained currents between 2.5A and 3.2A require thermal analysis to confirm the substitute's 1.1W maximum power dissipation is adequate for the specific duty cycle and thermal environment.

On-State Resistance and Thermal Performance: The substitute exhibits 120 mOhm Rds On (measured at 4A, 4.5V) versus the original's 100 mOhm (measured at 2.2A, 4.5V). The higher resistance results in increased power dissipation at equivalent current levels. Thermal design review is necessary for applications operating near maximum current ratings.

Switching Characteristics: The ZXMN2A01E6TA demonstrates lower gate charge (3 nC versus 7 nC), enabling faster switching transitions and reduced driver power consumption. This characteristic is advantageous in high-frequency switching applications.

Product Status: The ZXMN2A01E6TA maintains Active product status with 38,300 units in stock, ensuring long-term availability and supply chain stability compared to the obsolete IRLMS1902TRPBF.

Frequently Asked Questions (FAQ)

Q: Can the ZXMN2A01E6TA directly replace the IRLMS1902TRPBF without PCB modifications?

A: Yes. Both devices use the SOT-23-6 package with identical pinout and footprint geometry. No PCB layout changes are required for mechanical and electrical connection.

Q: What is the impact of the lower 2.5A current rating on my application?

A: If your circuit operates continuously below 2.5A at 25°C, the substitute is fully compatible. For applications requiring sustained currents between 2.5A and 3.2A, calculate the actual power dissipation using the substitute's Rds On specification and verify the thermal environment can dissipate 1.1W maximum without exceeding junction temperature limits.

Q: How does the higher Rds On of the substitute affect power dissipation?

A: Power dissipation increases with higher on-state resistance. At equivalent current levels, the ZXMN2A01E6TA will generate more heat than the original part. Thermal modeling of your specific application is required to confirm acceptable junction temperatures.

Q: Does the lower gate charge affect circuit design?

A: The lower gate charge (3 nC versus 7 nC) reduces the charge required to switch the device, potentially lowering driver power consumption and enabling faster switching transitions. No circuit redesign is necessary; this represents an operational improvement in most applications.

Q: Are there any compliance or certification differences between these parts?

A: No. Both devices are ROHS3 compliant, REACH Unaffected, and classified as EAR99. Regulatory documentation and supply chain requirements remain identical.

Q: What is the availability difference between these parts?

A: The IRLMS1902TRPBF is classified as obsolete with limited remaining inventory. The ZXMN2A01E6TA is Active with 38,300 units in stock, providing superior long-term procurement security and supply chain continuity.

Q: Should I test the substitute before full production implementation?

A: Thermal and electrical validation within your specific application environment is prudent engineering practice, particularly for applications operating near the 2.5A current limit or in thermally constrained environments.