Description
EEF20 2+5 Pins Widening Size MnZn Ferrite High Frequency Transformer
Product Overview
EF20 2+5 widening pin high frequency transformer adopts low-loss manganese-zinc ferrite magnetic core. It features compact overall size, cost-effective price and long-term stable reliability. EF series is a universal basic ferrite core widely deployed in all kinds of switching power supplies and electronic conversion circuits.
It supports multiple mainstream circuit topologies including full-bridge, half-bridge, single-ended flyback and resonant conversion circuits, with stable and excellent electromagnetic material performance. The EF-type magnetic core is designed with enlarged core cross-sectional area, which effectively reduces the total volume of power supply equipment and supports miniaturized product design. Meanwhile, it delivers higher output power under the same outline dimension, applicable for high-frequency transformers and filter choke coils in various switching power supplies.
Core Advantages
- Widened 2+5 double-row pin layout, larger pin spacing for easy PCB soldering and better insulation safety;
- Enlarged magnetic core cross-section, high power density, realize miniaturization of power supply modules;
- Multiple circuit topology compatibility: full bridge, half bridge, single-ended, resonant;
- Low-loss MnZn ferrite core, low temperature rise, stable long-hour operation;
- Fully customizable winding turns ratio, wire temperature grade (155℃ / 180℃), pin definition and winding structure;
- Small overall dimension, low production cost, high cost performance for mass production.
Technical Specifications
| Item | Standard Parameter | Custom Support |
|---|---|---|
| Core Model | EF20 MnZn Low Loss Ferrite Core | Other EF series cores available |
| Pin Configuration | Widening Size 2+5 Double Row DIP Pins | Custom pin count & spacing |
| Operating Frequency | 20kHz ~ 500kHz | Frequency adjusted by circuit demand |
| Rated Power Range | 3W ~ 25W | Custom power design |
| Operating Temperature | -40℃ ~ +125℃ | High heat resistant wire upgrade optional |
| Enameled Wire Grade | 155℃ polyurethane wire / 180℃ triple insulated wire | Custom wire gauge & temperature |
Typical Application Fields
- Small switching power adapters, mobile & smart device chargers
- LED driver power supply, lighting control circuit power module
- Household appliance control board, small industrial sensor power supply
- Low-power single-ended flyback power supply, mini resonant converter
- EMI filter choke coils, small signal isolation transformers
One-Stop Supporting Components Matching
We supply full set matching electronic components for EF series transformers to simplify your procurement process:
- SMD power inductors: CD / RH / NR series for filtering & energy storage
- Power semiconductors: MOSFET, PWM driver IC, rectifier diodes
- Auxiliary passive parts: high-frequency capacitors, power resistors, common mode chokes
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