Small EI Transformer Core with Low Core Loss High Saturation Flux Density and Precision-Stamped Laminations
Price:
Negotiable
MOQ:
Negotiable
Delivery Time:
10-15 work days
Product Description
Small EI Transformer Core
Our Small EI Transformer Core is a high-performance magnetic component engineered for efficient power conversion and signal isolation in compact electronic devices. Utilizing precision-stamped silicon steel laminations, this core forms the essential component of small transformers, inductors, and chokes. The classic interlocking design ensures a robust magnetic circuit with minimal air gaps, maximizing magnetic flux linkage for reliable performance in low to medium-power applications.
Typical Applications
- Switch-Mode Power Supplies (SMPS) for consumer electronics
- AC/DC adapters and chargers
- Audio equipment input/output transformers
- Control circuits, relays, and small power supplies
- Lighting ballasts and LED drivers
Product Specifications
| Parameter Category | Specification | Details / Typical Value |
|---|---|---|
| Core Material | Electrical Steel (Silicon Steel) | High-grade, cold-rolled, grain-oriented or non-oriented silicon steel laminations |
| Core Type & Construction | EI Lamination Stack | Precision-stamped E and I laminations, interleaved and stacked |
| Key Performance Parameters | Stacking Factor | > 0.95 |
| Key Performance Parameters | Saturation Flux Density (Bs) | ~1.5 - 1.8 T (dependent on silicon steel grade) |
| Key Performance Parameters | Core Loss | Low loss, optimized for 50/60 Hz to several kHz operation |
| Physical Specifications | Available Sizes | Multiple standard sizes (EI-28, EI-35, EI-41, EI-48). Custom sizes available |
| Physical Specifications | Lamination Thickness | Standard options: 0.35mm or 0.5mm |
| Physical Specifications | Surface Treatment | Blue or clear insulation coating to minimize inter-lamination eddy currents |
| Mechanical & Thermal | Operating Temperature Range | -40°C to +120°C (or higher, depending on insulation class) |
| Mechanical & Thermal | Mounting | Designed for easy bobbin/winding assembly and secure mounting |
Specific numerical values for Bs, core loss, and exact dimensions are determined by the silicon steel grade and core size. Please consult our datasheets for precise specifications.
Product Advantages
Superior Magnetic Performance & High Efficiency
- Low Core Loss: High-quality silicon steel reduces hysteresis and eddy current losses for cooler operation and higher efficiency
- High Saturation Flux Density: Enables smaller core sizes for compact transformer designs
- Excellent Permeability: Provides efficient magnetic flux path, minimizing magnetizing current requirements
Optimal Cost-Effectiveness & Manufacturing Simplicity
- Proven, Economical Design: Mature EI lamination technology offers excellent performance-to-cost ratio
- Ease of Assembly & Winding: Separable E and I pieces allow for pre-wound bobbin assembly
- Material Efficiency: Precision stamping minimizes silicon steel waste
Enhanced Reliability & Design Flexibility
- Reduced Audible Noise: Tight interlocking laminations dampen magnetostriction for quieter operation
- Excellent Heat Dissipation: Stacked laminations create natural thermal paths
- Mechanical Robustness: Secure clamping provides stable, vibration-resistant structure
- Design Flexibility: Available in wide range of standard sizes and silicon steel grades
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Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.
Company
Foshan Mellow Stainless Steel Co., Ltd.
Location
Xinbao Plaza, Tiancheng Rd, Shunde District, Foshan, Guangdong Province, China, 528041
Contact Person
Ouyang