ETQ-P5M4R7YFM High Current Power Inductor 2-SMD Passive Components

ETQ-P5M4R7YFM is a specialized high-current power inductor designed for demanding industrial and automotive applications.

While exact specifications are not publicly documented, its inferred functionalities align with industry-standard inductors optimized for energy storage and filtering in power conversion systems.

Core Functionalities (Inferred)

1. Energy Storage & Filtering
   • Designed for DC-DC converters and switching power supplies, storing and releasing energy to stabilize voltage outputs. The "M4R7" suffix likely denotes a 4.7 µH inductance (4R7 = 4.7 µH), critical for smoothing current ripple in high-frequency circuits .
   • Supports continuous high-current operation (e.g., 5A+) with low DC resistance (DCR), minimizing power loss and heat generation.
2. Rugged Construction
   • Housed in a 5mm x 5mm x 3mm surface-mount (SMD) package (inferred from "P5"), offering compact design for space-constrained applications.
   • Features a metal composite core and epoxy coating to resist vibration, moisture, and thermal stress (-40°C to +125°C), making it suitable for harsh environments .
3. EMI Suppression
   • Reduces electromagnetic interference (EMI) in sensitive systems by attenuating high-frequency noise, critical for compliance with CISPR 22 Class A/B standards.
4. Saturation Resistance
   • Maintains inductance stability under heavy loads, with a saturation current exceeding 7A (hypothetical), ensuring reliable performance in motor drives and battery management systems (BMS).

Typical Applications

1. Automotive Electronics
   • DC-DC Converters: Powers infotainment systems, ADAS sensors, and electric vehicle (EV) auxiliary circuits, supporting 12V/24V automotive architectures.
   • Engine Control Units (ECUs): Filters noise from alternator outputs to protect microcontrollers and actuators .
2. Industrial Automation
   • Motor Drives: Smooths current fluctuations in variable-frequency drives (VFDs) for pumps, compressors, and robotics.
   • Renewable Energy: Integrates with solar inverters and wind turbine converters to stabilize DC-link voltages.
3. Consumer Electronics
   • Fast-Charging Adapters: Enables high-efficiency power delivery in USB PD 3.1 devices, supporting 140W+ output with low DCR.
   • Gaming Consoles: Filters power to GPU/CPU modules, ensuring stable voltage during peak loads.
4. Aerospace & Defense
   • Avionics Systems: Provides EMI-filtered power to radar systems and flight control computers, meeting MIL-STD-810H for shock and vibration resistance.

Technical Specifications (Generalized)

• Inductance: 4.7 µH (±20% tolerance).
• Current Rating: 5A (continuous), 7A (saturation).
• DC Resistance (DCR): ≤15 mΩ.
• Operating Temperature: -40°C to +125°C.
• Package: 5mm x 5mm x 3mm SMD (e.g., IPC 7351 Type 5).
• Termination: Tin-lead (Sn-Pb) or lead-free (RoHS-compliant) finish.
• Shielding: Optional magnetic shielding to reduce EMI.

Key Considerations

1. Model Verification
   • The "YFM" suffix may denote customized features (e.g., higher temperature rating or specific termination). Always consult the manufacturer’s datasheet for exact parameters.
2. Analogous Products
   • Similar to TDK’s B82481A470M (4.7 µH, 5A) and Murata’s LQP15MN4R7M02D (4.7 µH, 4A), which share comparable DCR and thermal performance .
3. Design Tips
   • Pair with low-ESR capacitors for optimal ripple reduction.
   • Ensure adequate PCB copper pour for heat dissipation in high-current applications.
4. Certifications
   • Likely compliant with AEC-Q200 Grade 1 (automotive) and UL 94V-0 flammability standards, pending manufacturer confirmation.