SPI Series: Ultra Compact Power Inductors for Next Gen Portable Electronics

FERRTX engineers cutting-edge magnetic solutions that redefine power density limits. Our SPI Series Power Inductors deliver industry-leading 3A–5A currents in sub-5mm footprints—enabling 23% smaller GaN adapters, 18% lighter laptops, and uncompromised efficiency for mission-critical portable devices.

Breakthrough Performance in Miniature Packages

Extreme Current Density

• 5A in 0804 Footprint: SPI0804S inductors achieve 5A IDC with DCR as low as 0.021Ω (model SPI0804S-1R0), ideal for space-constrained GaN laptop adapters requiring ≤30mm³ volume.
• Anti-Tombstoning Flat Top: Patented flat-top structure ensures 99.9% pick-and-place accuracy, eliminating solder defects in high-speed SMT lines.

Unmatched Power Efficiency

• Ultra-Low 0.04Ω DCR: SPI0402S-1R0 reduces conduction losses by 40% vs competitors, boosting efficiency to 93.5%+ in 100W PD fast chargers.
• High-Frequency Stability: Ferrite Core maintains <2% inductance drop at 5MHz, critical for EMI Filter stages in 5G smartphones.

Rugged Reliability

• Military-Grade Endurance: Withstands 260°C reflow for 10 seconds (MIL-STD-202E compliant) and operates at -40°C to +85°C.
• Shielding Inductor construction minimizes EMI leakage by 20dB, protecting sensitive Sensor circuits in medical wearables.

Technical Specifications & Validation

SPI Series Performance Summary

Certifications:

• RoHS/REACH Compliant
• MIL-STD-202E Solvent Resistance
• Halogen-Free Terminations

Dominant Applications

A. Ultra-Portable Power Systems

• 100W GaN Laptop Adapters: SPI0804S enables 49cc volume (47×35×30mm) with 1.32W/cm³ density—23% smaller than conventional designs.
• Step-Up Converters: Achieve 12V→60V conversion at 95.3% efficiency using SPI0402S in solar-powered wearables.

B. High-Density Consumer Electronics

• Smartphone RF Power: Integrate SPI0402S as RF Inductor in 5G PA modules, reducing noise by 15dBμV vs unshielded solutions.
• Multi-Port Chargers: Replace bulky Transformer with SPI1306S in 65W PPS designs, saving 60% PCB area.

C. Industrial & Medical Devices

• Battery-Powered Sensors: SPI0402S’s 0.04Ω DCR extends IoT sensor runtime by 30%.
• EMI Filter Networks: Shielded structure suppresses common-mode noise in motor drives and CT scanners.

Design Acceleration Resources

• Thermal Layout Calculator: Optimize pad design (e.g., 3.56×1.4mm for SPI0402S) to prevent tombstonin.
• SPICE Models: Simulate transient response in boost/buck topologies using ANSYS®-compatible files.
• GaN Adapter Reference Kit: Download 100W PD3.0 schematic with BOM and Gerber files.