Quick AnswerAt 1–100 MHz, an inductor is defined by its operating point, not its nominal inductance: give the manufacturer the switching frequency, ripple waveform, DC current, inductance at current, thermal budget and size — then verify their loss data, testing depth and qualification. The RFQ checklist in this guide gets you comparable quotes from high-frequency inductor manufacturers.
High-frequency inductors for AI GPU VRM, server POL and compact converters are specified by their operating point. A good RFQ gets you a good part; a vague one gets you a datasheet that looks good and fails in the field. Here is what a high-frequency inductor manufacturer needs from you.
| Parameter | Why the manufacturer needs it |
|---|---|
| Switching frequency | Core material and loss data are frequency-specific |
| Ripple current waveform | Loss depends on the real ΔB swing, not a sine assumption |
| DC current & peak | Sets saturation margin and bias-stability requirements |
| Inductance at current | The value must hold at full load, not at zero current |
| Thermal budget & size | Decides core size, DCR and package |
At 1–100 MHz, molded metal inductors with FeNi-based or composite cores keep permeability stable under bias and loss manageable. Ask which core material the quote uses, the permeability grade and the bias curve — then compare quotes on the same operating point, not on the same part number.
The High-Frequency Inductor Design note explains how each parameter drives the design, and the Power Inductor Spec Guide covers the broader specification. YUTE’s molded MHz inductors (0.047–6.8 µH, 1–100 MHz) are built on FeNi-based cores with in-house testing.
Submit the checklist through the engineering RFQ and our engineering team will respond with a technical evaluation within 24 hours.
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