Qingdao Noble Electronics Co., Ltd.  

Product Name: Ee20 Series Ferrite Core High Frequency Switch Transformer Model NO.: EF20 Brand: Phoegon Shape of Core: EE Frequency Characteristics: High Frequency Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Switch Transformer Certification: ISO9001-2000, UL, ISO9001, RoHS Ce Winding Type: Multi-winding Transformer Cooling Method: Dry-type Transformer Core: Core-type Transformer Phase: Single Application: Electronic, Instrument, Lighting, Rectifier, Audio, Switch Trademark: PHOEGON Transport Package: Export Cartons on Strong Pallets or Wooden Cases Specification: Ef20 EE20 Origin: Qingdao, China HS Code: 85043110 Product Description EF20 (EE20) SeriesFerrite CoreHigh Frequency Switch TransformerSafety Standard: UL 94V-0EN61558-2-16Insulation System (in compliance with): UL Class B 130ºCCreepage distance between primary and secondary: 6mm Min.Electrical Parameter: Inductance(0.1V 1KHz): 990uH+/-10% Terminal (3 --- 5) Leakage Inductance (0.1V 100KHz at all secondary winding shorted):26uH Max.Dielectric Strength: (cut off current 3mA):Type TestProduction TestTest Voltage (Vrms)Time (Second)Test Voltage (Vrms)Time (Second)Primary to Secondary Winding40006048001Pri., Secondary to Core15006018001Primary to Aux. winding15006018001 DC Resistance(at 20ºC):P1 (3--4): 0.237Ω+/-15%P2 (4--5): 0.425Ω+/-15%P3 (2--1): 0.0526Ω+/-20% S (6--9): 0.0542Ω+/-20%Insulation Resistance (DC 500V): 100MΩMin.Environmental Property : Operating Temperature Range (including temperature rise of transformer): -20ºC to 130ºC Storage Temperature Range: -30ºC to 80ºCSchematic Diagram:Some Pictures of the said products for your further reference.FAQ:1. Are you factory?Yes, we have more than 17 years production experience.2. All goods are tested before shipment?Yes of course, all goods are tested with different testing machines for different electrical parameter.3. Small Order Quantity is available?Yes of course we can. In our history, the smallest order is 5 pcs. For your reference, small quantity means higher prices.4. Protection of goods is ok for rough handling during transformer from China to your warehouse?Yes, we have done sound protection measurements for protection.5. How to be in compliance with UL insulation system?We use all the materials which is in compliance with UL certification.6. VDE certification is available?We can do that once you do need it.7. Small Size Toroidal transformer (inside is about 10mm) is available?Yes, we have reliable ability to hand wind such small size transformer. But the time of shipment is normal.