Monolithic Power Systems Inc. MPL-SE2512-100

Overview

MPL-SE2512-100 from Monolithic Power Systems is a semi-shielded power inductor with 10 µH nominal inductance (±20%), 410 mΩ typical DCR, 1.1 A rated current (ΔT = 40 K), and 1.3 A saturation current at both 25°C and 100°C ambient - designed for DC-DC converter output filtering in space-constrained portable power rails.

For engineers reviewing the MPL-SE2512-100 datasheet, MPL-SE2512-100 pinout (though leadless), MPL-SE2512-100 application in buck converters, or MPL-SE2512-100 equivalent inductor alternatives, this part delivers verified thermal performance up to +125°C operating temperature, low stray field due to semi-shielded construction, and RoHS/REACH-compliant halogen-free materials.

Technical Context

This inductor operates within -40°C to +125°C ambient (including self-heating), with inductance measured at 100 kHz / 100 mA. Its semi-shielded ferrite core minimizes magnetic coupling to adjacent components while maintaining high saturation robustness.

Rated current (IR) is defined by 40 K temperature rise on a standardized single-layer PCB (35 µm Cu, 30 × 50 mm); saturation current (ISAT) reflects 30% inductance drop at specified ambient temperatures - both critical for stable regulation under load transients in battery-powered DC-DC stages.

Key Specifications

Pinout & Package

Package: 2.5 mm × 2.0 mm × 1.2 mm molded semi-shielded SMD inductor with bottom-surface terminations; land pattern per MPS Rev. 1.2 drawing (A = 2.40 mm ref, B = 0.80 mm ref, C = 2.90 mm ref).

Key Features

Applications

Availability

MPL-SE2512-100 is available at Aetrix Electronics and suitable for battery-powered wearables, IoT edge sensor nodes, and portable medical devices requiring stable component supply with guaranteed long-term manufacturability.

Supply support for MPL-SE2512-100 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, with global design and support infrastructure.

The MPL-SE series targets space- and thermal-constrained DC-DC applications in portable electronics, emphasizing low-profile semi-shielded magnetics optimized for efficiency, EMI control, and reliability in consumer and medical edge devices.

FAQ

What is the thermal test condition for the rated current (IR) specification?

The 1.1 A rated current is measured with the inductor mounted on a single-layer PCB (35 µm copper, 30 × 50 mm), where IR causes a 40 K temperature rise above ambient. Actual thermal performance varies with PCB stack-up, copper area, and nearby heat sources - layout optimization is required for system-level validation.

Does MPL-SE2512-100 have polarity or orientation requirements during placement?

No - MPL-SE2512-100 is a non-polarized, symmetric two-terminal inductor with identical terminations. It has no dot marking or directional indicators and may be placed in either orientation on the PCB without affecting electrical or thermal performance.

How does the semi-shielded construction affect EMI compared to unshielded or fully shielded inductors?

Semi-shielding reduces stray magnetic flux by ~70% versus unshielded equivalents while avoiding the higher DCR and cost of fully shielded types. This balances EMI suppression and efficiency - ideal for tight-layout applications where full shielding would compromise thermal or size targets.

Can MPL-SE2512-100 be used in automotive cabin applications?

No - although rated to +125°C, MPL-SE2512-100 is not AEC-Q200 qualified and lacks automotive-grade screening, traceability, or extended temperature validation. It is intended for commercial/industrial portable electronics, not automotive under-hood or infotainment systems.

What is the significance of identical ISAT values at 25°C and 100°C?

The matching 1.3 A saturation current at both temperatures indicates minimal thermal degradation of core permeability - enabling predictable current-handling capability across the full operating range without derating, which simplifies design margining for thermally dynamic portable use cases.

Is tape-and-reel packaging available, and what are the reel specifications?

Yes - MPL-SE2512-100 ships in EIA-481-compliant tape-and-reel packaging. Standard reel contains 3,000 units per 13-inch reel, with pocket pitch of 4 mm and cover tape width of 8 mm. Storage requires ≤40°C and <50% RH to preserve solderability and moisture sensitivity level (MSL) integrity.