1. EI Ferrite Core Structure
High-permeability Mn-Zn ferrite (e.g., PC40/PC44) for low core loss (<50mW/cm³ @ 100kHz).
2. DIP (Dual In-line Package)
Through-hole mounting (pin spacing: 5.08mm/10.16mm) for robust mechanical support.
3. High-Frequency Operation
Stable performance at 50kHz–500kHz (Bmax: 300mT).
4. Low EMI Design
Optional Faraday shielding for <30dB noise reduction (EN 55032).
5. Thermal Stability
-40°C to +125°C operating range (IEC 60068 certified).
AC/DC Converters: Flyback topologies (10–60W).
Industrial Power: Gate drive transformers (IGBT/MOSFET).
Renewable Energy: PV micro-inverter auxiliary power.
Telecom: Isolated PoE power modules (IEEE 802.3af).
Note: Cost-effective solution for medium-power, high-reliability designs.
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 | ||
| EI25 Series | TDK EI25 | Würth EI25 | ||
| Electrical Parameters | Operating Frequency | 20kHz-500kHz | 20kHz-500kHz | 50kHz-500kHz |
| Rated Power | 30～50W | 20～50W | 15～80W | |
| Input Voltage | AC：90V～240V | AC： 90V～240V | AC：85V～265V | |
| Output Voltage | 5VDC～150VDC | AC 5V～48V | 5V～48V | |
| Inductance (Primary) | 100μH～2200μH | 50μH～5000μH | 100μH～2000μH | |
| Hi-pot | 2k～4kVAC (Pri.-Sec.) | 1k～3kVAC (Pri.-Sec.) | 3kVAC/60s (Pri.-Sec.) | |
| Efficiency | 85~95% | 85~95% | 88~94% | |
| Core Characteristics | Core Material | PC95 Ferrite | PC40 oe PC44 | N87 or N92 Ferrite |
| Structure & Thermal Management | Cooling Method | Air | Air | Air |
| Insulation Class | Class F | Class F | Class F | |
| Temperature Range | -40℃~+125℃ | -40℃~+125℃ | -40℃~+125℃ | |
| Certifications & Compliance | Safety Certifications | CQC、3C | UL、CE、VDE | UL、CE |
| Environmental Certifications | RoHS、REACH | RoHS、REACH | RoHS、REACH | |
