Monolithic Power Systems Inc. MPL-SE6040-220

Overview

MPL-SE6040-220 from Monolithic Power Systems is a semi-shielded power inductor with 22 µH nominal inductance (±20%), 97 mΩ typical DCR, 2.35 A rated current (ΔT = 40 K), and 2.25 A saturation current at 25°C. It features low stray field, RoHS/REACH-compliant halogen-free construction, and operates from –40°C to +125°C ambient including self-heating. Used in high-efficiency DC-DC converters for embedded computing and battery-powered devices.

For engineers reviewing the MPL-SE6040-220 datasheet, MPL-SE6040-220 pinout (two-terminal SMT device), MPL-SE6040-220 application in buck converter output filters or input EMI suppression, or MPL-SE6040-220 equivalent for 22 µH power inductors with ≤120 mΩ DCR and ≥2 A ISAT, this page delivers verified electrical specs, thermal behavior context, package dimensions, and real-world selection guidance.

Technical Context

This inductor is optimized for continuous conduction mode (CCM) operation in synchronous buck regulators, where stable inductance under DC bias and low core loss at 100 kHz–13 MHz are critical. Its semi-shielded molded construction balances magnetic shielding efficiency (reducing radiated EMI) with thermal dissipation capability via exposed copper terminations.

Rated current is defined by thermal rise (ΔT = 40 K) on a standardized single-layer PCB (30 × 50 mm, 35 µm Cu); saturation current reflects 30% inductance drop at 25°C and 100°C-enabling accurate design margining across operating temperature extremes.

Key Specifications

Pinout & Package

Two-terminal surface-mount device in semi-shielded molded package measuring 6.0 × 6.0 × 4.0 mm (L × W × H). Terminations are exposed copper pads on bottom side, compatible with standard reflow profiles. Land pattern per datasheet Rev. 1.1: pad length 4.5 mm, width 2.2 mm, spacing 6.5 mm (center-to-center).

Key Features

Applications

Availability

MPL-SE6040-220 is available at Aetrix Electronics and suitable for battery-powered devices, high-efficiency SMPS, and embedded computing applications requiring stable component supply, consistent thermal performance, and RoHS/REACH-compliant materials.

Supply support for MPL-SE6040-220 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 operations.

The MPL-SE series is engineered for compact, high-current DC-DC converter applications demanding low-profile magnetics with predictable saturation and thermal behavior-targeting space-constrained consumer, industrial, and automotive power systems.

FAQ

What is the recommended PCB land pattern for MPL-SE6040-220?

The official land pattern (Rev. 1.1) specifies two rectangular pads: 4.5 mm length × 2.2 mm width, center-to-center spacing 6.5 mm. Pad copper thickness should be 35 µm on a 30 × 50 mm single-layer board for thermal validation. Solder mask defined (SMD) footprint is advised to maximize thermal conduction to PCB copper.

How does saturation current change between 25°C and 100°C?

ISAT drops from 2.25 A at 25°C to 2.0 A at 100°C ambient-reflecting reduced core material permeability at elevated temperature. This 11% decrease must be accounted for in worst-case thermal design, especially in enclosed or high-ambient environments.

Is MPL-SE6040-220 suitable for automotive applications?

Yes-its –40°C to +125°C operating range, halogen-free/RoHS/REACH compliance, and AEC-Q200 qualification status (per MPS product family documentation) support use in automotive infotainment, body control modules, and ADAS power supplies where reliability and thermal robustness are required.

Can this inductor replace a toroidal or drum-core type in existing designs?

It can substitute where footprint (6 × 6 mm), height (4 mm), and electrical specs (22 µH, ≤120 mΩ DCR, ≥2 A ISAT) match. However, its semi-shielded structure yields different EMI radiation profile and thermal coupling behavior-layout revalidation is required, particularly near sensitive analog circuits.

What is the meaning of "semi-shielded" in this context?

Semi-shielded means the coil is partially encapsulated in magnetic composite material, providing moderate magnetic flux containment (lower stray field than unshielded types) while retaining better heat dissipation than fully shielded (e.g., molded drum or closed-core) inductors-ideal for thermally demanding, space-limited applications.

Does MPL-SE6040-220 have a polarity marking?

No-this is a non-polarized two-terminal inductor. Orientation on PCB has no electrical effect; however, consistent placement aids automated optical inspection (AOI) and thermal uniformity in array layouts.