ETD34/17/11 Ferrite Core – High Power SMPS Transformer Core
TheETD34/17/11 ferrite core is a high-performance magnetic core used for designing high-frequency transformers and inductors in SMPS (Switched Mode Power Supplies), battery chargers, inverters, UPS systems, LED drivers, and industrial power electronics.
It supports 40W to 150W power range depending on winding, core grade (N87, PC44, 3C90), and switching frequency.
📐 Core Size (Nominal Dimensions)
| Parameter | Value |
|---|---|
| Core Type | ETD34/17/11 |
| Length (L) | 34 mm |
| Height (H) | 17 mm |
| Thickness (T) | 11 mm |
| Effective Core Area (Ae) | ~97.1 mm² |
| Effective Magnetic Path Length (Le) | ~78.6 mm |
| Effective Volume (Ve) | ~7640mm³ |
⭐ Features
✔ Suitable for flyback, forward, half-bridge, and full-bridge SMPS
✔ Supports high-frequency operation (20 kHz – 200 kHz)
✔ Low core loss ferrite material (PC44, 3C90, N87, N49)
✔ Ideal for high-power and high-efficiency designs
✔ Compatible with bobbin winding (horizontal & vertical)
✔ Excellent thermal & magnetic stability
📦 Available Variants
| Material | Frequency Range | Applications |
|---|---|---|
| PC44 | 30–100 kHz | SMPS, LED drivers |
| 3C90 | 50–150 kHz | Telecom, battery charger |
| N87 | 20–200 kHz | High-efficiency power |
| N97 | 60–300 kHz | High-frequency, EV charger |
🎯 Applications
🔹 SMPS Transformers (LLC, Flyback, Forward)
🔹 EV Charger Power Supplies
🔹 UPS and Inverter Circuits
🔹 Battery Chargers (Lead-Acid, Li-ion)
🔹 High-Frequency Inductors & Chokes
🔹 Solar Charge Controllers
🔹 DC-DC Converter Transformers (Isolated)
⚙ Benefits
✔ Supports higher wattage compared to ETD29 core
✔ Lower copper loss due to better window area
✔ High efficiency and stable performance
✔ Perfect for industrial and commercial SMPS designs



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