Ee20 Series Ferrite Core High Frequency Switch Transformer

• Application: Electronic, Instrument, Lighting, Rectifier, Audio, Switch
• Phase: Single
• Core: Core-type Transformer
• Cooling Method: Dry-type Transformer
• Winding Type: Multi-winding Transformer
• Certification: ISO9001-2000, UL, ISO9001, RoHS Ce
• Model NO.: EF20
• Usage: Single-phase Transformer, Rectifier Transformer, Combined Transformer, Power Transformer, Distribution Transformer, Switch Transformer
• Frequency Characteristics: High Frequency
• Shape of Core: EE
• Brand: Phoegon
• Transport Package: Export Cartons on Strong Pallets or Wooden Cases
• Specification: Ef20 EE20
• Trademark: PHOEGON
• Origin: Qingdao, China
• HS Code: 85043110
• Production Capacity: 300K PCS

Product Description

EF20 (EE20) Series Ferrite Core
High Frequency Switch Transformer

 

Safety Standard:

UL 94V-0
EN61558-2-16
 

Insulation System (in compliance with):

UL Class B 130ºC
Creepage 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 Test		Production Test
	Test Voltage (Vrms)	Time (Second)	Test Voltage (Vrms)	Time (Second)
Primary to Secondary Winding	4000	60	4800	1
Pri., Secondary to Core	1500	60	1800	1
Primary to Aux. winding	1500	60	1800	1

    
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): 100MΩ Min.

Environmental Property :
    Operating Temperature Range
   (including temperature rise of transformer):      -20ºC   to   130ºC
   Storage Temperature Range:                     -30ºC   to    80ºC

Schematic 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.