STMicroelectronics ECMF04-4HSM10

Overview

ECMF04-4HSM10 from STMicroelectronics is a quad-channel common mode filter with integrated ESD protection for high-speed differential interfaces, supporting HDMI Full HD (3.35 Gbps), USB 2.0 (480 Mbps), USB 3.2 Gen 1 (5.0 Gbps), MIPI D-PHY (2.5 Gbps), and DisplayPort. It delivers -25 dB common-mode attenuation at 800–900 MHz, 700 MHz LTE band suppression (-20 dB), and maintains <5 Ω DC series resistance per line in a 2.6 × 1.35 × 0.55 mm µQFN-10L package.

For engineers reviewing the ECMF04-4HSM10 datasheet, ECMF04-4HSM10 pinout, ECMF04-4HSM10 application, or ECMF04-4HSM10 equivalent, key selection criteria include differential bandwidth preservation (>3.5 GHz), common-mode rejection above -20 dB across 700 MHz–1 GHz, dual-lane ESD robustness (±8 kV contact / ±15 kV air), and PCB space efficiency in ultra-thin mobile designs.

Technical Context

This device integrates two independent differential channels (D1+, D1−, D2+, D2−), each with matched common-mode chokes and bidirectional ESD diodes to ground. Its symmetrical layout preserves differential impedance (Z_DIFF = 100 Ω) while providing >25 dB common-mode attenuation between 800–900 MHz and maintaining signal integrity up to 5.0 Gbps.

The µQFN-10L package uses internal flip-chip interconnects to minimize parasitic inductance and capacitance, enabling stable performance across HDMI, USB, and MIPI protocols without degrading eye diagram opening-verified via comparative eye diagrams in DS9770 Rev 6.

Key Specifications

Pinout & Package

ECMF04-4HSM10 is housed in a RoHS-compliant µQFN-10L package (2.6 × 1.35 × 0.55 mm, 0.5 mm pitch) with wettable flanks and exposed thermal pad (Pin 3 & Pin 8). The package supports automated optical inspection (AOI) and provides low-inductance grounding paths.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar common-mode filtering applications.

Compared with MEM2012W201RT001 and NFM41PC206R2A3L, ECMF04-4HSM10 uniquely combines dual-lane support, ≥5 Gbps bandwidth, integrated ±8 kV ESD protection, and sub-5 Ω R_DC, making it the only qualified solution for modern high-speed mobile serial interfaces requiring co-packaged filtering and protection.

Availability

ECMF04-4HSM10 is available at Aetrix Electronics and suitable for mobile phone design, notebook EMI compliance, and portable medical imaging systems requiring stable component supply with full traceability and lifecycle management.

Supply support for ECMF04-4HSM10 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

STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.

The ECMF series targets high-speed interface protection in space-constrained portable electronics, with emphasis on EMI suppression, ESD robustness, and signal fidelity preservation across HDMI, USB, MIPI, and DisplayPort physical layers.

FAQ

What is the maximum data rate supported by ECMF04-4HSM10?

ECMF04-4HSM10 supports up to 5.0 Gbps, validated for USB 3.2 Gen 1 (Fig. 10–11), HDMI 1.4 (3.35 Gbps, Fig. 6–7), and MIPI D-PHY 2.5 Gbps (Fig. 12–13) with maintained eye opening. Its differential bandwidth exceeds 3.5 GHz, ensuring minimal signal distortion at these rates.

Does ECMF04-4HSM10 require external ESD protection components?

No. The device integrates bidirectional ESD protection diodes per line rated to ±8 kV contact and ±15 kV air discharge (IEC 61000-4-2 Level 4), eliminating the need for external TVS diodes on the protected differential lanes.

How does the µQFN-10L package affect thermal performance?

The µQFN-10L package features an exposed thermal pad (Pins 3 and 8) soldered directly to the PCB ground plane, enabling efficient heat dissipation. With only 5 Ω max R_DC per line and no active circuitry, self-heating is negligible-even at 100 mA RMS current (absolute max rating).

Can ECMF04-4HSM10 be used for single-ended interfaces like UART or I²C?

No. ECMF04-4HSM10 is designed exclusively for differential signaling (HDMI, USB, MIPI, DisplayPort). Its internal common-mode chokes rely on balanced differential currents; applying it to single-ended lines would cause severe signal attenuation and impedance mismatch.