PMCM440VNEZ N-Channel MOSFET Equivalent & Substitute Parts

Part Overview

The PMCM440VNEZ is an N-Channel MOSFET manufactured by Nexperia USA Inc., rated for 12V drain-to-source voltage with 3.9A continuous drain current at 25°C. The device is housed in a 4-WLCSP (0.78x0.78mm) surface mount package and is designed for low-power switching applications requiring compact form factors.

This part is currently listed as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

PMCM440VNEZ

Nexperia USA Inc.In Stock: 800PMCM440VNEZ Datasheet

Current PartRFQ

PMCM4401VNEAZ

Nexperia USA Inc.In Stock: 2189PMCM4401VNEAZ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PMCM440VNEZ is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Drain-to-Source Voltage (Vdss) must equal or exceed 12V
• Continuous Drain Current (Id) must meet or exceed 3.9A at 25°C
• Gate Threshold Voltage (Vgs(th)) must be compatible with existing drive circuitry
• On-Resistance (Rds On) characteristics must support application power dissipation requirements
• Operating temperature range must encompass -55°C to 150°C

Mechanical Compatibility Criteria:

• Package type must be 4-WLCSP (0.78x0.78mm) for PCB layout compatibility
• Surface mount configuration must match existing assembly processes
• Pin configuration and footprint must be identical

Compliance Criteria:

• RoHS3 compliance required
• Moisture Sensitivity Level (MSL) of 1 or equivalent
• REACH unaffected status

The PMCM4401VNEAZ meets all substitution criteria with enhanced electrical performance characteristics while maintaining identical mechanical and package specifications.

Parameter Comparison

Engineering Selection Recommendations

The PMCM4401VNEAZ is a direct substitute for the obsolete PMCM440VNEZ based on the following engineering criteria:

Electrical Performance: The substitute part exceeds the minimum electrical requirements of the original design. The continuous drain current rating increases from 3.9A to 4.7A, and the on-resistance decreases from 67mOhm to 42mOhm at the same gate-source voltage (4.5V). These improvements provide enhanced current handling capability and reduced power dissipation, resulting in superior thermal performance within the same power dissipation envelope.

Mechanical Compatibility: Both parts utilize identical 4-WLCSP (0.78x0.78mm) surface mount packaging with matching pin configurations and footprints. No PCB layout modifications are required for substitution.

Compliance and Certification: Both parts maintain ROHS3 compliance, MSL Level 1 (unlimited moisture sensitivity), and REACH unaffected status. Regulatory and environmental requirements are satisfied without deviation.

Product Status: The PMCM4401VNEAZ is currently in active production status, ensuring long-term supply chain availability and support, whereas the original part is obsolete. This substitution addresses supply continuity concerns while maintaining design integrity.

Thermal Characteristics: Identical maximum power dissipation ratings (400mW at Ta, 12.5W at Tc) and operating temperature range (-55°C to 150°C) ensure thermal design compatibility.

Frequently Asked Questions (FAQ)

Q: Can the PMCM4401VNEAZ be used as a direct replacement for the PMCM440VNEZ without circuit modifications?

A: Yes. Both parts share identical voltage ratings (12V Vdss), matching gate threshold voltages (900mV @ 250µA), identical package geometry (4-WLCSP 0.78x0.78mm), and equivalent thermal specifications. The substitute part exhibits improved electrical performance characteristics that are backward compatible with the original design.

Q: What are the key differences between these two parts?

A: The primary differences are continuous drain current rating (3.9A versus 4.7A), on-resistance (67mOhm versus 42mOhm at 3A, 4.5V), gate charge (8.2nC versus 9nC), and input capacitance (360pF versus 335pF). The substitute part provides higher current capacity and lower on-resistance, resulting in reduced power dissipation. Product status differs, with the substitute part in active production.

Q: Are there any PCB layout considerations when substituting these parts?

A: No. Both parts utilize the identical 4-WLCSP (0.78x0.78mm) surface mount package with matching pin configurations. Existing PCB layouts, footprints, and assembly processes require no modification.

Q: What is the significance of the product status difference?

A: The PMCM440VNEZ is obsolete, indicating discontinued production and limited availability. The PMCM4401VNEAZ is in active production status, ensuring reliable long-term supply chain availability and manufacturer support for future production runs.

Q: Do both parts meet the same regulatory and environmental standards?

A: Yes. Both parts are ROHS3 compliant, carry MSL Level 1 (unlimited) moisture sensitivity ratings, and maintain REACH unaffected status. No regulatory or environmental compliance issues arise from substitution.

Q: How do the thermal characteristics compare?

A: Both parts share identical maximum power dissipation ratings of 400mW at ambient temperature (Ta) and 12.5W at case temperature (Tc). Operating temperature ranges are identical (-55°C to 150°C). The substitute part's lower on-resistance results in reduced power dissipation at equivalent current levels, providing improved thermal margin.

Q: Is the increased gate charge (9nC versus 8.2nC) a concern for drive circuit compatibility?

A: No. The gate charge difference of 0.8nC is negligible and falls within standard gate driver capability margins. Existing drive circuitry designed for the original part will operate within specification with the substitute part.