Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%

* Role: Experienced UK e-commerce copywriter. * Product: Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. * Brand: Intertechnik. * Category: Air core rolls. * SKU: I-1340102. * Specs: 3.9 mH, Wire diameter 3mm, Resistance 0.23 ohms, Tolerance ±3%, Size 55 x 46 mm. * Price: 84 390 HUF. * Length: Exactly 2–3 sentences, max 300 characters. * First sentence: Start with strongest benefit/use case (NOT product name). * Keyword: Include "Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%" naturally. * No hype words (premium, perfect, fantastic, best, etc.). * Last sentence: Must include one concrete technical detail. * Format: Plain prose only (no bullets). * Tone: Professional, concise, informative. * Language: British English (UK). * Output: Only the finished text. * *Benefit/Use Case:* High-precision filtering/tuning for audio or industrial circuits. * *Keyword:* Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0% * *Technical Detail:* 3.00 mm copper wire or 0.23 Ω resistance or 55 x 46 mm dimensions. * *Draft 1:* Ensure stable signal filtering in high-performance circuitry with the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component provides reliable inductance for professional applications. It features a copper wire diameter of 3.00 mm. * *Reviewing Draft 1 against rules:* * 2-3 sentences? Yes (3). * Max 300 chars? Let's check. (Approx 230 chars). * First sentence starts with benefit? Yes ("Ensure stable signal filtering..."). * Includes keyword? Yes. * No hype words? "High-performance" might be borderline, but "professional" is okay. Let's refine to be safer. * Last sentence has technical detail? Yes ("copper wire diameter of 3.00 mm"). * No bullets? Yes. * UK English? Yes. * *Refining Draft 2 (removing "high-performance"):* Achieve precise signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component is designed for stability and reliability in demanding applications. It has a DC resistance of 0.23 Ω. * *Character count check:* "Achieve precise signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component is designed for stability and reliability in demanding applications. It has a DC resistance of 0.23 Ω." Length: 258 characters. * *Double checking rules:* - 2-3 sentences? Yes (3). - Max 300 chars? Yes (258). - First sentence starts with benefit/use case? Yes ("Achieve precise signal filtering..."). - Keyword included? Yes. - No hype words? (precise, stability, reliability, demanding - these are descriptive, not hype like "best" or "fantastic"). - Last sentence technical detail? Yes (DC resistance of 0.23 Ω). - Plain prose? Yes. - UK English? Yes. * *Wait, looking at the specs provided:* "Tekercs típus: Vasmagos" means Iron-core, but the name says "Air-core". The category says "Air core rolls". The product name is the primary source for the keyword. I will stick to the keyword provided. * *Final Polish:* Achieve precise signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component ensures stable inductance for professional audio or industrial use. It features a copper wire diameter of 3.00 mm. * *Character count check:* 262 characters. * *Final Rule Check:* - Start with benefit? Yes. - Keyword? Yes. - No hype? Yes. - Last sentence tech detail? Yes. - 2-3 sentences? Yes. - Max 300 chars? Yes. - UK English? Yes. * *One more check on "precise" - is it hype?* Usually, "precise" is considered a technical descriptor in electronics. "Perfect" or "Best" are hype. "Precise" is an objective goal of an inductor. * *Alternative for first sentence if "precise" is too close to hype:* "Ensure stable signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%." * *Let's go with:* Ensure stable signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component is designed for reliability in professional applications. It features a copper wire diameter of 3.00 mm. * *Count:* 256 characters. * *One last look at the "Vasmagos" spec:* The user data says "Tekercs típus: Vasmagos" (Iron-core), but the name and category say "Air-core". In e-commerce, the product name usually overrides conflicting metadata. The prompt asks to include the keyword exactly. I will follow the keyword. * *Final string:* Ensure stable signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component is designed for reliability in professional applications. It features a copper wire diameter of 3.00 mm. * Wait, "professional" might be considered hype by some strict standards, but usually, it's a category. Let's use "industrial". * *Final string:* Ensure stable signal filtering in electronic circuits using the Intertechnik Air-core inductor – 3.90 mH | E170 | DCR 0.23 Ω | Cu 3.00 mm | ±3.0%. This component is designed for reliability in industrial applications. It features a copper wire diameter of 3.00 mm. * *Character count:* 254.