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Mini Compact Cores

Compact nanocrystalline toroids for PCB-related and space-constrained designs. Stocked sizes cover 16–25 mm OD, with smaller HF EMI choke cores arriving October 20, 2026.

Technical Specifications

Precision-engineered mini cores delivering exceptional magnetic performance in ultra-compact form factors for modern electronics.

Magnetic Properties

  • • Permeability: 70,000 μi (±25%)
  • • AL Value: 75 µH/T²
  • • Saturation: 1.25T @ 25°C
  • • Core Loss: <50W/kg @ 100kHz, 0.1T
  • • Frequency Range: 10kHz to 1MHz

Physical Dimensions

  • • Outer Diameter: 14.0mm (±0.2mm)
  • • Inner Diameter: 7.0mm (±0.2mm)
  • • Height: 7.0mm (±0.2mm)
  • • Weight: ~2.5g
  • • PCB Footprint: 16×16mm

Operating Conditions

  • • Temperature: -40°C to +125°C
  • • Humidity: 95% RH non-condensing
  • • Vibration: IEC 60068-2-6
  • • Thermal Shock: -40°C to +125°C
  • • RoHS Compliant

5G & Telecommunications Applications

Specifically designed for next-generation telecommunications equipment and space-constrained electronic applications.

5G Base Stations & Small Cells

Optimized for 5G RF front-end modules, power amplifiers, and signal conditioning circuits. Excellent EMI suppression for sub-6GHz and mmWave applications.

  • • RF chokes and filters
  • • Power supply inductors
  • • EMI suppression beads

Consumer Electronics

Perfect for smartphones, tablets, wearables, and IoT devices requiring high-performance magnetic components in minimal space.

  • • DC-DC converter inductors
  • • Wireless charging coils
  • • Signal isolation transformers

PCB-Mount Power Supplies

Ideal for point-of-load converters, isolated DC-DC modules, and high-density power management solutions.

  • • Flyback transformers
  • • Coupled inductors
  • • Common mode chokes

Medical & Automotive Electronics

Reliable performance for medical devices, automotive infotainment, and safety-critical applications requiring compact solutions.

  • • Isolated gate drivers
  • • Sensor interface circuits
  • • CAN bus filters

Advantages of Mini Compact Cores

Space Optimization

OD up to 25 mm enables denser PCB and enclosure layouts for compact designs

High Frequency Performance

Excellent magnetic properties up to 1MHz with low core losses for efficient operation

EMI Suppression

Superior EMI filtering capabilities for clean power delivery and signal integrity

Frequently Asked Questions

What applications are mini compact cores suitable for?

Mini compact cores are ideal for 5G base stations, PCB-mount power supplies, consumer electronics, and space-constrained applications requiring high-performance magnetic components in minimal footprint. They excel in RF front-end modules, power amplifiers, and signal conditioning circuits.

What frequency range do mini compact cores support?

Mini compact cores support frequencies from 10kHz to 1MHz, making them suitable for high-frequency applications including 5G telecommunications, RF front-end modules, and switching power supplies. The 70k μi permeability ensures excellent performance across this range.

How do mini compact cores compare to larger cores?

Mini compact cores provide the same high-performance magnetic properties as larger cores but in a smaller OD footprint (up to 25 mm). While they have lower power handling capacity, they offer better space efficiency where board real estate is critical.

Need Mini Compact Core Design Support?

Share your space constraints, frequency requirements, and power levels. We'll recommend the optimal mini compact core configuration for your 5G, PCB-mount, or space-critical application.