01 Target
Board space, current, ripple, switching frequency and the temperature the part will see.
Product line 03 · Device level
Copper-Iron Co-Fired Molded Power Inductors
A copper winding co-fired with an iron-based magnetic body, for high current density in a low profile.
Copper winding and iron body, co-fired
A copper winding and an iron-based magnetic body are co-fired as one piece, so the winding and the magnetic path are formed in the same step.
- Fixed: the construction concept — copper winding co-fired with an iron-based magnetic body — and the sample process.
- Project-specific: inductance, saturation current, DCR, profile and the mechanical envelope, all agreed against your board.
- Material: THA100 FeNi or another grade matched to the target frequency and DC bias.
Defined with your drawing and operating conditions
| Construction | Copper winding, co-fired iron-based body | Confirmed per project |
|---|---|---|
| Status | Project supply | Confirmed with your build |
| Parameters | L, Isat, DCR, dimensions | Quoted per evaluation build |
THA100 material characteristics
THA100 is one of the FeNi materials used in this line. The values below are material data, not ratings for a finished inductor.
THA100 · standard material
Material data — not a finished inductor datasheet
Material properties
| Property | Typical value | Test conditions |
|---|---|---|
| Material grade | THA100 | Grade designation as published. |
| Initial permeability μi | 100 | Relative permeability, dimensionless. |
| Saturation flux density Bs | 1500mT | Typical value for the grade. |
| Curie temperature Tc | > 500°C | Strictly greater than the stated value. |
| Operating temperature range | −55 to +200°C | Material range — not a rating for a finished component. |
Core loss density
Four published test points. Each loss value belongs to the frequency, flux density and temperature printed in the same row.
| Test frequency | Test flux density | Temperature | Core loss density |
|---|---|---|---|
| 100 kHz | 100mT | 100°C | 200mW/cm³ |
| 500 kHz | 50mT | 100°C | 300mW/cm³ |
| 1 MHz | 50mT | 100°C | 820mW/cm³ |
| 1 MHz | 100mT | 100°C | 4200mW/cm³ |
Typical material values for THA100. Core-loss values are specified at the stated frequency, flux density and temperature. Final component performance depends on geometry, winding design and operating conditions.
Source: YUTE material characteristics table, 2026-10-26. Typical values; the full material data sheet is available on request.
How an evaluation runs
02 Build
An evaluation build is agreed with the winding and body dimensions fixed, so the measurement is repeatable.
03 Report
Measured L, Isat, DCR and temperature rise ship with the samples, including the test conditions.
Next steps
