Monolithic Power Systems Inc. MPL-AT2512-1R0

Overview

MPL-AT2512-1R0 from Monolithic Power Systems is a low-profile molded power inductor with 1.0 µH nominal inductance (±20%), 33 mΩ typical DCR, 4.1 A rated current (ΔT = 40 K), 5.2 A saturation current at both 25°C and 100°C, and 65 MHz typical self-resonant frequency - designed for high-efficiency DC-DC converters in space-constrained portable electronics.

For engineers reviewing the MPL-AT2512-1R0 datasheet, MPL-AT2512-1R0 package dimensions, MPL-AT2512-1R0 thermal derating curve, or MPL-AT2512-1R0 alternative inductors for IoT power stages, this page delivers verified electrical specs, application-specific performance context, and supply-chain-ready availability details.

Technical Context

This molded SMD 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 several MHz. Its 2.5 mm × 2.0 mm × 1.2 mm footprint supports ultra-thin PCB designs while sustaining +125°C maximum operating temperature including self-heating.

The device exhibits low audible noise due to fully encapsulated construction and controlled magnetostriction, and its 33 mΩ typical DCR minimizes conduction loss in high-current, low-voltage output rails - critical for battery-powered wearable and IoT applications where efficiency and thermal management are tightly coupled.

Key Specifications

Pinout & Package

MPL-AT2512-1R0 is a two-terminal surface-mount molded inductor with no polarity marking; terminals are symmetric and non-directional. It uses a thermally enhanced epoxy-molded package with exposed copper terminations for solder reflow compatibility and efficient heat dissipation into PCB copper planes.

Key Features

Applications

Availability

MPL-AT2512-1R0 is available at Aetrix Electronics and suitable for battery-powered wearables, high-frequency IoT SMPS, portable medical sensors, and USB-C PD adapter designs requiring stable component supply with guaranteed long-term manufacturability.

Supply support for MPL-AT2512-1R0 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 MPS's family of molded power inductors engineered specifically for seamless integration with their DC-DC controllers and modules - emphasizing low profile, thermal robustness, and high-frequency stability in compact power systems.

FAQ

What is the recommended PCB land pattern for MPL-AT2512-1R0?

The datasheet specifies a 0.90 mm × 2.30 mm pad for each terminal, with 0.50 mm spacing between pads and 2.90 mm overall center-to-center distance. Use 35 µm copper thickness and avoid thermal relief on pads to maximize thermal conduction and solder joint reliability during reflow.

How does MPL-AT2512-1R0 perform at elevated ambient temperatures?

Its saturation current remains constant at 5.2 A from 25°C to 100°C ambient, and it is rated for total operating temperature up to +125°C including self-heating. Derating is only required for IR beyond 4.1 A when PCB thermal mass or airflow is insufficient to dissipate ΔT = 40 K.

Is MPL-AT2512-1R0 suitable for use with GaN-based switching controllers?

Yes - its 65 MHz self-resonant frequency and low parasitic capacitance ensure stable inductive behavior at GaN switching frequencies up to 2 MHz. The low DCR and soft saturation also mitigate voltage spikes and current overshoot during fast turn-off transitions.

Does MPL-AT2512-1R0 have polarity or winding direction sensitivity?

No - it is a non-polarized, symmetric two-terminal device. The dot marking indicates start of winding but has no functional impact in DC-DC applications; either terminal may connect to switch node or output rail without performance change.

What is the moisture sensitivity level (MSL) and baking requirement?

MPL-AT2512-1R0 is shipped in dry-packed tape-and-reel per J-STD-033 Level 3 (floor life: 168 hours at ≤30°C/60% RH). If exposed beyond floor life, bake at 125°C for 8 hours prior to reflow - confirmed by MPS packaging specification Rev. 1.2.

Can MPL-AT2512-1R0 replace older AT2512-series inductors with same footprint?

Yes - it shares identical 2.5 mm × 2.0 mm × 1.2 mm outline and land pattern with legacy AT2512 variants. Electrical parameters (L, DCR, ISAT) are updated per Rev. 1.2, so verify loop stability and thermal margin in existing designs before drop-in replacement.