Monolithic Power Systems Inc. MPL-AT2010-R47

Overview

MPL-AT2010-R47 from Monolithic Power Systems is a low-profile molded power inductor with 0.47 µH nominal inductance, 27 mΩ typical DCR, 4.5 A rated current (ΔT = 40 K), and 5.7 A saturation current at both 25°C and 100°C ambient - designed for high-frequency DC-DC converters in space-constrained portable electronics.

For engineers reviewing the MPL-AT2010-R47 datasheet, MPL-AT2010-R47 pinout (non-applicable - passive two-terminal device), MPL-AT2010-R47 application in compact SMPS designs, or MPL-AT2010-R47 equivalent inductors for IoT power stages, this page delivers verified electrical specs, thermal performance context, footprint compatibility, and real-world use-case alignment.

Technical Context

This molded inductor operates across -40°C to +125°C (including self-heating), exhibits soft saturation behavior due to distributed air gap construction, and maintains stable inductance up to 142 MHz typical self-resonant frequency - enabling reliable operation in 1–3 MHz switching regulators.

Its 2.0 mm × 1.6 mm × 1.0 mm LGA-style surface-mount package uses epoxy-molded ferrite core with copper winding, delivering low audible noise and minimal AC resistance rise up to 100 MHz - critical for EMI-sensitive wearable and battery-powered applications.

Key Specifications

Pinout & Package

The MPL-AT2010-R47 is a two-terminal passive component with no active pins; terminals are exposed copper pads on the bottom surface of its molded rectangular package (2.0 mm × 1.6 mm × 1.0 mm). Land pattern follows recommended 1.9 mm × 0.5 mm solder pads spaced 0.7 mm center-to-center.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar low-profile power inductor applications.

Compared with NR2010T470M and XAL2010-471MEC, MPL-AT2010-R47 delivers the best balance of low DCR (27 mΩ), high IR (4.5 A), and matched ISAT (5.7 A) in identical footprint - making it optimal for thermally constrained, high-duty-cycle portable SMPS designs.

Availability

MPL-AT2010-R47 is available at Aetrix Electronics and suitable for wearable power management, IoT sensor node DC-DC conversion, and portable medical device power supplies requiring stable component supply, consistent parametric performance, and full traceability across production lots.

Supply support for MPL-AT2010-R47 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 for power conversion, battery management, and motor control.

The MPL-AT series is engineered specifically for high-frequency, low-profile DC-DC applications - targeting space-constrained, thermally demanding systems such as wearables, IoT endpoints, and portable medical devices.

FAQ

Is MPL-AT2010-R47 suitable for automotive applications?

Yes - its -40°C to +125°C operating temperature range, halogen-free RoHS/REACH compliance, and AEC-Q200 stress-test alignment (per MPS qualification reports) support under-hood and cabin applications. However, it is not AEC-Q200 certified out-of-box; design validation per ISO 16750 is recommended for safety-critical use.

What is the recommended reflow profile for MPL-AT2010-R47?

MPS specifies JEDEC J-STD-020D-compliant lead-free reflow: peak temperature 260°C for ≤30 seconds, ramp-up rate ≤3°C/s, and time above 217°C of 60–150 seconds. Exceeding 260°C risks epoxy delamination and inductance drift; preheating below 150°C is mandatory to avoid thermal shock.

Does MPL-AT2010-R47 have polarity marking?

Yes - a single black dot on the top surface indicates the start of winding (Pad A). While functionally bidirectional, maintaining consistent dot orientation improves EMI repeatability in differential layouts and simplifies debugging of current-sense resistor placement in buck converters.

How does the 5.7 A ISAT at 100°C compare to typical inductors?

Most 0806-size 0.47 µH inductors degrade ISAT by 15–25% when ambient rises from 25°C to 100°C. MPL-AT2010-R47 maintains identical 5.7 A ISAT at both temperatures - indicating superior core material thermal stability and reduced need for derating in enclosed, high-ambient designs.

Can MPL-AT2010-R47 replace older MPL-AT2010-R47 Rev. 1.1 units?

Yes - Rev. 1.2 updates only typ values for IR (4.5 A vs. prior 4.2 A) and fr (142 MHz vs. prior 135 MHz); all mechanical dimensions, land pattern, and absolute max ratings remain unchanged. No PCB or firmware changes are needed for drop-in replacement.

What is the typical impedance at 10 MHz?

Per the Impedance vs. Frequency curve in the datasheet, MPL-AT2010-R47 delivers ~35 Ω impedance at 10 MHz - sufficient for mid-band EMI attenuation in switch-mode power supplies without requiring additional ferrite beads in most Class B emission-compliant designs.

Is tape-and-reel packaging available for sample orders?

Yes - Aetrix Electronics offers MPL-AT2010-R47 in standard 3,000-piece tape-and-reel (EIA-481-D compliant) for production, and cut-tape or sample reels (100 pcs) for evaluation. Reel ID is 330 mm, pocket pitch is 4 mm, and carrier tape width is 8 mm.