Radio Frequency Iron Powder Cores
- Technology
- Powder cores
- Partner
- Micrometals
Radio frequency soft magnetic materials from Micrometals are based on carbonyl iron powders. They are suitable in a really wide band of frequencies where other materials cannot be used due to a decrease of permeability (thus saturating) or increased losses (thus increasing heat and reducing efficiency). Offering a high Q factor in applications up to 700MHz they are the perfect solution for inductors and transformers in radio, video communication, or broadband applications.
The permeability (µr) range is from 1 to 35.
Range features
A high level overview of what this range offers
- Available in 11 different materials
- Optimised for specific frequencies
- Toroids available in core sizes from OD 1.27mm up to 165.1mm
- Mix-2 preferred material for audio amplifiers filters and radio frequency
- Available in toroid, E core, balun, hollow, bus bar, cup, disc, EH, EM, U, plain, rectangular, sleeve, and threaded core shapes
- Customised shapes also possible
- Mix-8 low core loss and good linearity under high bias conditions
What’s in this range?
All the variants in the range and a comparison of what they offer
| Material mix no. | Permeability | Typical AL tolerance (%) | Powder type | Temp coef of perm (+ppm/C°) | Density gm/cm3 max | Frequency (MHz) | Relative cost | Colour code toroid |
|---|---|---|---|---|---|---|---|---|
-0 | 1 | N/A | Phenolic | N/A | N/A | N/A | 1.3 | Tan/tan |
-1 | 20 | ±10 | Carbonyl iron | 280 | 6.4 | 10 | 3.8 | Blue/clear |
-2 | 10 | ±5 | Carbonyl iron | 95 | 5.0 | 45 | 2.2 | Red/clear |
-3 | 35 | ±10 | Carbonyl iron | 255 | 6.5 | 5.0 | 3.3 | Gray/clear |
-4 | 9 | ±5 | Carbonyl iron | 280 | 5.0 | 17 | 2.2 | Blue/white |
-6 | 8.5 | ±5 | Carbonyl iron | 35 | 5.0 | 55 | 3.6 | Yellow/clear |
-7 | 9 | ±5 | Carbonyl iron | 30 | 5.0 | 50 | 3.0 | White/clear |
-8 | 35 | ±10 | Carbonyl iron | 255 | 6.5 | 5.0 | 3.1 | Yellow/red |
-10 | 6 | ±5 | Carbonyl iron | 150 | 4.9 | 83 | 5.5 | Black/clear |
-15 | 25 | ±10 | Carbonyl iron | 190 | 6.4 | 7.0 | 3.4 | Red/white |
-17 | 4 | ±5 | Carbonyl iron | 50 | 4.8 | 170 | 3.5 | Blue/yellow |
