Monolithic Power Systems Inc. MPL-SE6040-2R2

Overview

MPL-SE6040-2R2 from Monolithic Power Systems is a semi-shielded power inductor with 2.2 µH nominal inductance, 14.5 mΩ typical DCR, 6.3 A rated current (ΔT = 40 K), and 7.2 A saturation current at 25°C. It operates from –40°C to +125°C and is optimized for high-efficiency DC-DC converters in space-constrained embedded computing and battery-powered systems.

For engineers reviewing the MPL-SE6040-2R2 datasheet, MPL-SE6040-2R2 thermal derating curve, MPL-SE6040-2R2 land pattern, or MPL-SE6040-2R2 alternative inductors, this component delivers verified DC bias stability, low stray field emission, and RoHS/REACH-compliant halogen-free construction suitable for industrial-grade SMPS design.

Technical Context

This inductor uses a composite semi-shielded core structure that balances magnetic shielding efficiency with thermal dissipation capability. Its 6 mm × 6 mm × 4 mm footprint supports high-density PCB layouts while maintaining ≥30% inductance retention up to 7.2 A at 25°C ambient.

Electrical characterization is performed at 100 kHz / 100 mA for inductance, with DC resistance measured at 25°C and saturation defined by 30% L-drop. Thermal performance assumes single-layer 35 µm Cu PCB (30 × 50 mm); actual ΔT varies with layout, copper weight, and adjacent heat sources.

Key Specifications

Pinout & Package

As a passive two-terminal inductor, MPL-SE6040-2R2 has no pinout. It is a surface-mount device in a semi-shielded molded package measuring 6.0 mm × 6.0 mm × 4.0 mm (L × W × H), with bottom-side solder pads aligned to a standardized land pattern per datasheet Rev. 1.1.

Key Features

Applications

Availability

MPL-SE6040-2R2 is available at Aetrix Electronics and suitable for battery-powered devices, high-efficiency SMPS, and embedded computing applications requiring stable component supply with guaranteed long-term availability and traceable sourcing.

Supply support for MPL-SE6040-2R2 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Monolithic Power Systems (MPS) is a fabless semiconductor company specializing in high-performance power management ICs and passive components, headquartered in Kirkland, WA, with global design and support centers.

The MPL-SE series targets high-current, low-profile DC-DC applications where thermal robustness, EMI control, and consistent DC bias performance are critical - especially in portable, industrial, and automotive power systems.

FAQ

What is the recommended PCB land pattern for MPL-SE6040-2R2?

The official land pattern (Rev. 1.1) specifies two 4.5 mm × 2.2 mm rectangular solder pads spaced 6.5 mm center-to-center, with 0.3 mm solder mask clearance. Pad dimensions match the device's bottom terminals precisely; deviation risks tombstoning or insufficient thermal transfer.

How does temperature affect saturation current in MPL-SE6040-2R2?

Saturation current decreases with rising ambient temperature: ISAT drops from 7.2 A at 25°C to 6.7 A at 100°C due to core permeability reduction. This 7% decline must be factored into worst-case transient design, especially in sealed enclosures without forced airflow.

Can MPL-SE6040-2R2 replace unshielded inductors in existing designs?

Yes - its semi-shielded construction offers lower EMI than unshielded types while maintaining similar DCR and size. However, verify thermal performance: the molded case increases thermal resistance slightly, so monitor hotspot temperature with IR imaging during validation.

Is MPL-SE6040-2R2 suitable for automotive ADAS applications?

It meets AEC-Q200 stress test recommendations for temperature cycling and vibration when used within its –40°C to +125°C operating range. While not officially AEC-Q200 qualified, its halogen-free, RoHS/REACH-compliant materials and proven reliability in industrial environments support Tier-2 ADAS subsystem use.

What is the meaning of "2R2" in the part number?

"2R2" is the industry-standard EIA code for 2.2 µH: 'R' denotes decimal point, so '2R2' = 2.2. This marking appears as laser-etched text on the top surface of the component and aligns with the inductance value specified in the electrical characteristics table.

Does MPL-SE6040-2R2 support reflow soldering per J-STD-020?

Yes - it is rated for standard lead-free reflow profiles (peak 260°C, 20–40 sec above 217°C). The epoxy-molded body withstands thermal shock; however, avoid exceeding 260°C peak or prolonged soak times to prevent delamination or marking degradation.