The EE33 Transformer Core Set includes a 6+6 pin vertical bobbin and two PC40 ferrite core halves, offering a complete solution for building high-frequency power transformers and inductors. Designed for Switch-Mode Power Supplies (SMPS), DC-DC converters, LED drivers, and inverter circuits, this EE33 set delivers excellent magnetic performance, low core loss, and stable operation at high frequencies.

Manufactured from high-quality PC40 MnZn ferrite material and flame-retardant bobbin plastic, this set is ideal for engineers and hobbyists developing medium-power power supply designs.

Key Features

• Complete EE33 transformer assembly: 6+6 pin vertical bobbin + PC40 ferrite halves
• High-performance PC40 ferrite material for reduced losses at high switching frequencies
• Vertical bobbin design for compact PCB mounting
• Wide winding window to support high-power transformer designs
• High-temperature UL94V-0 compliant bobbin material
• Excellent mechanical fit for consistent magnetic properties
• Suitable for flyback, forward, half-bridge, and full-bridge topologies

Specifications

• Core Type: EE33
• Bobbin Configuration: 6 + 6 pins (vertical mount)
• Core Material: PC40 MnZn ferrite
• Operating Frequency: 20 kHz – 300 kHz
• Ferrite Core Size: Standard EE33 dimensions
• Pin Material: Tin-plated copper
• Bobbin Material: High-temperature nylon, UL94V-0 rated
• Applications: SMPS, LED drivers, DC-DC converters, inverter circuits, magnetic prototypes

Applications

• Medium-power SMPS transformer design
• DC-DC converter transformers
• LED lighting power modules
• Inverter and UPS circuits
• Flyback and forward power supplies
• Custom magnetic component development