Description
EFD high frequency transformer
Our EFD High Frequency Transformer adopts flat EFD ferrite core structure, featuring small occupied area, low leakage inductance and excellent heat dissipation. It is widely applied in compact SMPS, charger and LED driver. Custom winding, pin arrangement and safety insulation design are available to meet consumer, industrial and medical power demands.
Product Overview Of high frequency transformer
EFD high frequency transformer is a flat surface-mount & through-hole power transformer built with manganese-zinc ferrite EFD core. Compared with traditional EE type transformers, the EFD flat design effectively reduces product height, perfectly matching slim power supply shell structure.It realizes voltage conversion and electrical isolation inside switching power supplies, supports operating frequency from 50kHz to 800kHz, and can be customized for power ranging from 3W to 150W.
Specifications
| Type | Structure type | Dimension(mm) | Pin Row1(mm) | Pin Row2(mm) | Row Pitch | OD Pin(mm) | Note | ||||
| A | B | C | Pin | Pin Pitch | Pin | Pin Pitch | |||||
| ETD15-001 | Horizontal | 15.5 | 16.2 | 8 | 4 | 3.75 | 4 | 3.75 | 13.7 | ∅0.6 | |
| ETD15-002 | Horizontal | 15.5 | 21.8 | 7.5 | 5 | 2.54 | 5 | 2.54 | 21.8 | SQ0.4*0.7 | SMD |
| ETD15-003 | Horizontal | 15.5 | 21.8 | 7.5 | 5 | 2.54 | 5 | 2.54 | 22.5 | SQ0.4*0.7 | SMD |
| ETD15-004 | Horizontal | 15.5 | 17.2 | 7.5 | 5 | 2.54 | 5 | 2.54 | 17.2 | SQ0.4*0.7 | |
| ETD15-005 | Horizontal | 15.5 | 21.4 | 7.5 | 5 | 2.54 | 5 | 2.54 | 21.8 | SQ0.4*0.7 | SMD 4 slot |
| ETD15-006 | Horizontal | 15.5 | 21.8 | 7.5 | 5 | 2.54 | 5 | 2.54 | 22.5 | SQ0.4*0.7 | SMD 4 slot |
| ETD15-007 | Horizontal | 15.5 | 17.2 | 7.5 | 5 | 2.54 | 5 | 2.54 | 17.2 | SQ0.4*0.7 | DIP 4 slot |
| ETD16-001 | Horizontal | 16.5 | 20.2 | 9 | 5 | 3.00 | 2 | 10.00 | 17.5 | ∅0.6 | |
| ETD20-001 | Horizontal | 20 | 20 | 10.2 | 4 | 5.00 | 4 | 5.00 | 17.5 | ∅0.7 | |
| ETD20-002 | Horizontal | 20 | 20 | 11 | 5 | 3.70 | 5 | 3.70 | 17.5 | ∅0.6 | |
| ETD20-003 | Horizontal | 21.5 | 21 | 9.5 | 5 | 3.75 | 5 | 3.75 | 25 | SQ0.4*1 | SMD |
| ETD25-001 | Horizontal | 25.5 | 25 | 12 | 5 | 5.00 | 5 | 5.00 | 22.5 | ∅0.7 | |
| ETD25-002 | Horizontal | 25.5 | 32.2 | 14.5 | 6 | 3.80 | 5 | 3.80 | 28.6 | SQ0.6*0.6 | |
| ETD30-001 | Horizontal | 30.5 | 31 | 15.7 | 6 | 5.00 | 6 | 5.00 | 27.6 | ∅0.8 | |
Key Features of EFD High Frequency Transformer
- Ultra-flat EFD ferrite core, save vertical installation space for slim equipment
- Low core loss and low leakage inductance, reduce EMI circuit interference
- High saturation flux density, stable output under continuous load
- Two installation styles: DIP through-hole / SMD surface mount
- Multiple insulation grades: Class B, Class F, Class H
- Support triple insulated wire winding for reinforced isolation safety
- Low temperature rise after long-hour continuous operation
- Custom turns ratio, inductance, pin layout and insulation treatment
Available EFD Core Models
Typical Applications
- Consumer Electronic Chargers
Mobile fast charger, laptop adapter, tablet power supply
- LED Lighting Drivers
Built-in power transformer for flat panel LED light, ceiling lamp driver
- Industrial Switching Power Supplies
Small PLC auxiliary power, instrument and monitoring power module
- Medical Electronic Equipment
Low-noise isolated power supply for portable diagnostic devices
- Household Smart Devices
Smart socket, router power supply, smart home control module
Customization Service
- Core size: EFD15 ~ EFD40 optional
- Winding material: Enameled copper wire / triple insulated wire / Litz wire
- Pin type: Straight DIP pins, bent pins, SMD patch terminals
- Insulation solution: Polyester tape wrapping, epoxy dipping, shielding winding
- Safety standard: Support CE, UL, RoHS, IEC 61558 test requirements
If you are looking for other flat high frequency magnetic components, you can view our ER High Frequency Transformer series for comparison.
All EFD high frequency transformers are manufactured following IEC international electromagnetic component safety standards. Each finished product passes withstand voltage test, insulation resistance test and load aging test before shipment.
Detailes :
DIP through-hole EFD high frequency transformer with yellow insulation tape for switching power supply
Reviews
There are no reviews yet.