Product Name: Efd25 SMD High Frequency Power Transformer Audio Transformer Model NO.: EFD25 Brand: Okerda Shape of Core: Efd Frequency Characteristics: High Frequency Usage: Single-phase Transformer, Rectifier Transformer, Power Transformer Certification: ISO9001-2000, UL, ISO9001, CCC Winding Type: Auto-transformer Cooling Method: Dry-type Transformer Core: Core-type Transformer Phase: Single Application: Power, Electronic, Instrument, Lighting, Rectifier, Audio Type of Transformer: SMD Transformer Frequency: High Frequency 20kHz-500kHz Working Temperature: -40