1. DIP (Dual In-line Package) Design
Through-hole mounting for robust mechanical stability (pin spacing: 5.08mm).
2. High Power Efficiency
Operates at 100–500kHz (PC40 ferrite, η >90% @ 200kHz).
3. Low Profile
10mm height (EFD20 core: 20×17×10mm) for space-sensitive layouts.
4. Customizable Windings
Supports multi-tap configurations (e.g., 1:1, 1:2) with reinforced insulation (3kV AC).
5. Wide Temperature Range
-40°C to +125°C operation (AEC-Q200 optional).
AC/DC Converters: Flyback topologies (10–30W).
Solar Inverters: Auxiliary power supplies (12V→24V).
Industrial Controls: PLC signal isolation.
LED Drivers: Constant-current circuits (0.5–2A).
Note: Ideal for cost-sensitive, medium-power designs requiring through-hole reliability.
YET focus in custom development and low volume methodology allow us to be one of the most flexible and agile manufacturers in the industry.
Our engineering staff has a vast wealth of professional knowledge.YET can deliver custom magnetics products on time to any country.
YET can design and build magnetics from customer design prints, re-engineer to enhance magnetics products to support customer needs, and reverse engineer magnetics products.
| ITEM | YET' P/N | Equivalent Substitutes | ||
| EFD20 | TDK EFD20 | Würth EFD20 | ||
| Electrical Parameters | Operating Frequency | 20kHz-500kHz | 50kHz-500kHz | 50kHz-500kHz |
| Rated Power | 15～50W | 20～50W | 15～50W | |
| Input Voltage | 5VDC～100VDC | 5VDC～100VDC | 5VDC～100VDC | |
| Output Voltage | 3.3VDC～150VDC | 3.3VDC～150VDC | 3.3VDC～150VDC | |
| Inductance (Primary) | 30μH～2200μH | 50μH～2000μH | 80μH～2500μH | |
| DCR | 0.10～1.5Ω (Pri.) | 0.08～1.2Ω (Pri.) | 0.1～1.8Ω (Pri.) | |
| 0.05～0.7Ω (Sec.) | 0.03～0.6Ω (Sec.) | 0.05～0.7Ω (Sec.) | ||
| Hi-pot | 3k～4kVAC (Pri.-Sec.) | 1.5k～6kVAC (Pri.-Sec.) | 3k～4.5kVAC (Pri.-Sec.) | |
| Core Characteristics | Core Material | PC95 Ferrite | PC95 or PC44 Ferrite | N87 or N49 Ferrite |
| Structure & Thermal Management | Cooling Method | air cooling | Forced cooling（>40W) | air cooling |
| Insulation Class | Class F | Class B | Class B | |
| Temperature Range | -40℃~+150℃ | -40℃~+125℃ | -40℃~+125℃ | |
| Certifications & Compliance | Safety Certifications | CQC、3C | UL、CE | UL、CE |
| Environmental Certifications | RoHS、REACH | RoHS、REACH | RoHS、REACH | |
