TDK has extended its ERU27M series of SMD high-current flat-wire inductors to withstand currents ranging from 36 A to 48 A, and to cover a range of inductance values from 2.3 µH to 8.5 µH. DC resistances are as low as 0.68 mΩ to 1.66 mΩ. The company has met these requirements by using new isolated alloy powder core, as well as flat wire helical winding for compact dimensions of only 27.1 x 25.55 mm, and the height ranges from 14.1 mm to 16.4 mm. The inductors are designed for operating temperatures from -40 °C to +150 °C.
With this magnetically shielded and robust construction with a third pin that is not electrically connected, these 4 new AEC-Q200-qualified energy storage chokes can be used in DC-DC converters, VRM modules, and POL converters especially in the automotive sector, but also in solar converters.
Main applications
Energy storage chokes for:
- DC-DC converters
- VRM modules
- POL converters
- Solar converters
Main features and benefits
- High rated current up to 48 A
- Extremely low DC resistance down to 0.68 mΩ
- Very low profile and small footprint
- Insulating alloy powder core
- Magnetically shielded
- Third pin that is not electrically connected for improved mechanical reliability
- Surface-mountable
- Qualified to AEC-Q200
| Ordering Code | Internal code | Rated inductance LR [µH] | Rated current Itemp [A] | DC Resistance RDC [mΩ] | Height [mm] |
| ERU27M-2R3L | B82579A1232A027 | 2.3 | 48 | 0.68 | 14.1 |
| ERU27M-3R9L | B82579A1392A027 | 3.9 | 46 | 0.88 | 15.5 |
| ERU27M-6R2L | B82579A1622A027 | 6.2 | 37 | 1.39 | 15.2 |
| ERU27M-8R5L | B82579A1852A027 | 8.5 | 36 | 1.66 | 16.4 |
