Monolithic Power Systems Inc. MPL-AT2010-1R0

Overview

MPL-AT2010-1R0 from Monolithic Power Systems is a low-profile molded power inductor with 1.0 µH nominal inductance (±20%), 50 mΩ typical DCR, 3.3 A rated current, and 4.2 A saturation current at both 25°C and 100°C - designed for high-frequency DC-DC converters in space-constrained portable electronics.

For engineers reviewing the MPL-AT2010-1R0 datasheet, MPL-AT2010-1R0 package dimensions, MPL-AT2010-1R0 thermal derating curve, or MPL-AT2010-1R0 alternative inductors, this page delivers verified electrical specs, application context for wearable and IoT power stages, and real-world layout guidance per MPS Rev. 1.2.

Technical Context

This molded inductor uses soft-saturation ferrite core material to maintain gradual inductance roll-off under high DC bias, enabling stable regulation in buck converters operating up to 66 MHz self-resonant frequency. Its 2.0 mm × 1.6 mm × 1.0 mm footprint supports ultra-thin PCB designs while sustaining +125°C maximum operating temperature including self-heating.

Thermal performance is characterized on a single-layer 30 mm × 50 mm PCB with 35 µm copper; temperature rise of 40 K occurs at 3.3 A (IR rating), and inductance drops 30% at 4.2 A across ambient temperatures from 25°C to 100°C (ISAT).

Key Specifications

Pinout & Package

As a two-terminal passive component, the MPL-AT2010-1R0 has no active pinout; it features a molded SMD construction with top-side dot marking indicating start of winding. The device is packaged in tape-and-reel format (EIA-481 compliant) and mounted using standard reflow profiles for SnPb- or Pb-free solder.

Key Features

Applications

Equivalent & Alternatives

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

Compared with VLS2010ET-1R0M and XAL2010-102MEC, the MPL-AT2010-1R0 delivers the highest IR-to-DCR ratio (3.3 A / 50 mΩ), making it optimal for thermally constrained, high-duty-cycle portable applications where sustained current capability outweighs marginal ISAT gains.

Availability

MPL-AT2010-1R0 is available at Aetrix Electronics and suitable for wearable power management, IoT sensor node supplies, and portable medical monitors requiring stable component supply with full traceability and lifecycle support.

Supply support for MPL-AT2010-1R0 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-AT series is engineered specifically for high-frequency, low-profile DC-DC applications in battery-powered systems - emphasizing thermal robustness, miniaturization, and EMI control without sacrificing saturation margin.

FAQ

What is the recommended PCB land pattern for MPL-AT2010-1R0?

The official MPS land pattern specifies 1.90 mm × 0.50 mm pads with 0.70 mm center-to-center spacing and 2.50 mm overall pad length. Use solder mask defined pads and ensure ≥0.15 mm solder mask dam between terminals to prevent bridging during reflow.

Does MPL-AT2010-1R0 support lead-free reflow profiles?

Yes - the device is qualified for JEDEC J-STD-020D-compliant lead-free reflow with peak temperature up to 260°C for 30 seconds. The molded epoxy withstands thermal cycling without delamination or parameter shift.

How does temperature affect saturation current in practice?

Per MPS characterization, ISAT remains constant at 4.2 A from 25°C to 100°C ambient - unlike many inductors that degrade with temperature, this part's ferrite formulation maintains consistent core permeability across its full operating range.

Can MPL-AT2010-1R0 be used in synchronous buck converters above 2 MHz?

Yes - its 66 MHz self-resonant frequency provides >30× margin over 2 MHz switching, ensuring stable impedance and minimal phase shift. Measured Q-factor peaks near 10 MHz, confirming suitability for high-frequency operation.

Is there a preferred orientation for mounting to minimize EMI?

Mount with the dot-marked terminal aligned toward the switch-node side of the buck converter to minimize loop area in the high di/dt path. This reduces radiated emissions by up to 6 dB compared to reverse orientation in 2-layer PCB layouts.

What is the shelf life under tape-and-reel packaging?

MPS specifies storage at −10°C to +40°C and <50% RH for up to 12 months. After opening, dry-pack with desiccant and use within 168 hours if MSL-1 handling is not feasible; moisture sensitivity level is not assigned due to fully molded construction.

How does soft saturation improve system reliability?

Gradual inductance decline beyond ISAT prevents sudden collapse of current slew rate, avoiding voltage overshoot and MOSFET stress during load steps - validated in MPS application note AN-123 for portable PMIC reference designs.