EFD Type Transformers:High Frequency Model Number: EFD31 used for fax machine etc (Other EI/EE/ER/EEL/ETD/EP/EPC/EFD/PQ/RM/UU) Ferrite Core shape:E/EI/R shape Apply for :electric components Type:vertical/horizontal type Frequency: High frequency from 1K-100KHZ Cooling form:dry-type Place of Origin:Guangdong, China Brand Name:Golden Eagle Outer dimension and style can be customized EFD、RM,EP,PQ type high frequency transformers has a small magnetic leakage ,low lost and low distributed capacitance feature, used for switches,process control exchanger, fax machine etc feature: 1. applied in a wide range 2. high operation frequency 3. wide range of working voltage 4. large power 5. low temperature rising Provide us your drawing or samples,we can provide fast and professional solution for your items. Customized/Adjust the inductance/Resistance As per your needs