For Purchasing Managers, Technical Directors, and Operations Leaders who demand low‑noise, high‑current performance without the premium price tag. In 2025, 41% of Class D audio systems reported efficiency losses due to undersized or low‑quality
“Switching to Xinchangda’s Class D inductor cut our amplifier’s heat rise by 28 °C and reduced total cost of ownership by 22 %.”
“The OEM design service delivered a custom 15 µH part that fit our compact PCB without redesign. Delivery in 5 days – unmatched speed.”
All products are manufactured under ISO 9001 quality management, with CE, FCC, UL, and RoHS certifications for global compliance.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for the Digital Class D Amplifier Inductor?
Our standard MOQ is 1,000 pieces per part number. For large‑scale projects we can accommodate 10,000+ units with tiered pricing.
Can you provide custom inductance values or form factors?
Yes. Our R&D team (10 engineers) offers OEM/ODM design. We can modify inductance (5 µH‑100 µH), footprint, and terminal style to match your schematic.
What are the payment terms for US buyers?
We accept T/T (30 % deposit, 70 % before shipment), L/C at sight, and PayPal for samples. Credit terms (Net 30/45) are negotiable for established accounts.
How do you ensure compliance with US safety regulations?
All units are tested for UL 60950‑1, FCC Part 15, and CE Marking. Test reports are provided on request.
What is the typical lead time for stocked versus custom parts?
Stocked SKUs ship within 7 days. Custom designs require 3‑4 weeks for tooling and first‑article inspection.
David Kim – Procurement Lead, AudioTech USA “The Xinchangda inductor reduced our board size by 15 % and saved $0.08 per unit. Delivery was on‑time, and the technical support answered every query within hours.”
Linda Patel – Operations Manager, GreenEnergy Solutions “We needed a rugged inductor for our solar inverter. Xinchangda supplied a custom 20 µH part that passed our 2000‑hour burn‑in test with zero failures.”
Mark Johnson – Senior Engineer, MedEquip Corp. “Compliance documentation (UL, CE) was complete and accepted by our regulatory team on first review – saved us weeks of paperwork.”
About the Author
Emily Chen, Senior Application Engineer at Huizhou Xinchangda Electronic. With 12 years in magnetic component design for audio, medical, and renewable‑energy markets, Emily leads the OEM/ODM program and has authored 30+ technical whitepapers on high‑frequency inductors.
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All products are manufactured under ISO 9001 quality management, with CE, FCC, UL, and RoHS certifications for global compliance.