The EE55 11+11pin Transformer Bobbin with two PC40 ferrite halves is a high-quality core and bobbin assembly designed for constructing medium-power transformers used in AC/DC power supplies, SMPS (switch-mode power supplies), inverters, and isolated power modules. With dual 11-pin winding posts and a vertical bobbin configuration, this transformer core assembly provides excellent winding versatility and stable magnetic performance.

Paired with PC40 (Permalloy Composite) ferrite halves, the core offers low core loss, good permeability, and efficient high-frequency operation - ideal for modern switching applications.

Key Features

• EE55 Core Size: Medium power handling suitable for a wide range of transformer designs
• Dual 11 + 11 Pins: Provides flexible winding configuration for primary, secondary, and auxiliary coils
• PC40 Ferrite Material: High permeability, low core loss, and good performance in switching frequencies
• Vertical Bobbin Design: Compact and easy to mount for PCB-based transformer assemblies
• Permaloy Composite Ferrite: Improves efficiency and reduces heat at high operating frequencies
• Sturdy Construction: Designed for reliable performance in industrial and consumer power supplies

Specifications

• Core Type: EE55 Ferrite Core (2 pieces)
• Bobbin Style: Vertical PC40 Transformer Bobbin
• Pin Count: 11 + 11 Pins (primary + secondary winding terminations)
• Ferrite Material: PC40 (Permalloy composite ferrite)
• Mounting: Through-hole (PCB) compatible
• Application: Transformer winding in SMPS, power adapters, converters

Applications

• SMPS Transformers: Primary/secondary power isolation and conversion
• AC/DC Power Supplies: Line-frequency and high-frequency transformer builds
• Inverters: Power conversion transformer core for medium power ranges
• Custom Power Modules: DIY transformer windings for specialized power electronics
• Industrial & Consumer Electronics: Reliable core for isolated power designs