How To Source Custom Transformers And Inductors

Start with the component you actually need

Electronic components cover many product categories. For a custom magnetics enquiry, identify the transformer, choke, inductor or current transformer in the power circuit. Huizhou Jiayang Electronic Technology Co., Ltd., founded in 2002, manufactures custom magnetic components in Huizhou, China. Its portfolio covers appliances, PV and energy storage, automotive and EV charging, and AI server power. Review the component families and application examples to check whether the product scope matches your project.

Turn the design into a reviewable RFQ

A drawing or reference part is a useful starting point, especially when some decisions remain open. State the component function, operating conditions and maximum package size. For a high-frequency transformer, include topology, voltage, power, frequency, ratio and insulation requirements. For a PFC inductor, include the inductance target and current waveform. For a common-mode choke, specify the line arrangement and noise-control target. The RFQ checklist brings the electrical, mechanical, thermal and commercial inputs together.

Check the manufacturer and its evidence

Confirm the legal company name, manufacturing location and process relevant to your part. Review factory and product evidence alongside the documents. A management-system certificate and approval for a particular product are different kinds of evidence. Check the named entity, factory, scope, model coverage and current validity rather than assuming one certificate covers every item. Jiayang's quality and testing page includes supplied certificate copies and their stated scope; ask the team for current confirmation when required for supplier approval.

Compare quotation scope, not just the unit price

Use the same drawing revision and requirements when comparing quotations. Confirm what the price includes: samples, tooling if applicable, testing, documents, packaging and delivery terms. Ask about minimum order quantity, sample charges, payment terms and timing for the specific part. Jiayang does not publish one universal price, minimum order quantity or lead time because these depend on the specification and project scope. Record the agreed terms with the quotation.

Agree how the sample will be accepted

Before placing an order, agree the drawing revision, required samples, acceptance tests and documents. Identify which electrical, mechanical, thermal and insulation requirements must be demonstrated and under what conditions. A product photo or a similar-looking reference is not an acceptance specification. Review the results with the actual application requirements and settle open points before approving production. Document any agreed changes so the quotation, drawing and acceptance criteria remain aligned.

What should the first message contain?

Send the application, component family, drawing or reference, known targets, required quantity and project timing. Mark uncertain items clearly. The RFQ page prepares an email draft in your own email application, where you can review it and attach drawings before sending. You can also email 991537476@qq.com or contact Jiayang on WhatsApp. Final suitability and quotation terms follow specification review.