Product-specific sourcing · China
AC/DC Power Adapter Sourcing in China
Compare China AC/DC power adapter suppliers by input range, output voltage/current, polarity, barrel or other non-USB DC connector, AC plug, form factor, efficiency and protection claims, private label, MOQ, samples and documents — buyer-side RFQ fields, not factory marketing.
Buyer context
Make the technical and commercial basis comparable first.
AC/DC power adapter quotations often look similar until output voltage and current, polarity, connector dimensions, AC plug, wall-mount versus desktop form factor, efficiency or protection claims, private-label scope and MOQ layers are written down. Sephalis helps buyers make those fields explicit so quotations stay comparable, and keeps supplier statements separate from electrical safety approval or market-access certification. Use this page for fixed-output device PSUs with barrel or other non-USB DC connectors; for USB / GaN wall bricks use /electronics-sourcing-china/wall-chargers.
What buyers usually need to compare
Use these fields to keep quotations tied to the same technical, production and packaging assumptions.
✓ Input voltage range (for example 100–240 VAC) and frequency expectation
✓ Output voltage and current (or rated wattage) as a fixed device supply target
✓ Output polarity (centre-positive, centre-negative, or stated other)
✓ DC connector type and dimensions (barrel OD×ID, keyed, or other non-USB DC) — not USB-C PD ports
✓ AC plug type or interchangeable-plug requirement (US, EU, UK, AU or other)
✓ Form factor: wall-mount versus desktop / external brick
✓ DC cable length, colour and exit style when the cable is part of the SKU
✓ Efficiency class or regulation claim requested (for example Level VI / CoC) and who states it
✓ Protection features requested (OVP, OCP, SCP, OTP or other) as RFQ fields, not Sephalis guarantees
✓ Destination markets and labeling / marking language expectations
✓ Private-label and OEM customisation tier (logo/label/pack vs colour/housing vs new mold / full ODM)
✓ MOQ by SKU and by customisation layer (product vs packaging vs tooling); sample cost and sample lead time
✓ Production lead time, quantity breakpoints, and documents to request with the quotation
Evidence worth collecting before the next decision
Sephalis keeps supplier statements, technical evidence and unresolved questions separate so the buyer can see what is known and what still needs engineering or specialist review.
✓ Written electrical specification matching the RFQ fields (buyer-verified once agreed)
✓ Connector drawing or dimensioned note including polarity mark (buyer-verified once agreed)
✓ Product label / rating-plate artwork draft (supplier-provided)
✓ Supplier statement on efficiency class and protection features (supplier claim)
✓ Plug configuration and destination-market note on the quotation (commercial fact when written)
✓ Packaging or private-label mock-up when branding is in scope (supplier-provided)
✓ Written sample terms and production lead time (commercial)
✓ Quotation with MOQ, OEM tier, NRE/tooling and exclusions (commercial)
✓ Supplier-provided test reports or certificate copies where offered (supplier claim / document — not Sephalis certification or market approval); unresolved items called out as unknown until buyer or specialist closes them (independent lab status, report-to-model match, thermal/aging results)
Commercial comparison
Separate one-time development cost from recurring unit cost.
For electronics, tooling, NRE, programming, test fixtures, artwork and prototype charges may sit outside the production unit price. A useful comparison keeps those charges visible together with MOQ, lead time, packaging and FOB terms.
Technical boundary
Supplier documents are evidence, not automatic approval.
Sephalis can collect specifications, quotations, supplier documents and samples. Formal electrical safety, radio, battery transport, engineering validation, product compliance and market-access decisions remain separate questions for the relevant specialists and authorities.
Common buyer questions
Short answers below describe the sourcing workflow rather than engineering or regulatory approval.
Can one adapter model serve several countries?
Possibly, but AC plug configuration, labeling language, efficiency or safety document sets and buyer requirements may differ by destination. Put intended markets in the sourcing brief before comparing quotations.
Is a USB wall charger the same RFQ as a power adapter?
Not usually. Use this page for AC/DC device PSUs matched by input range, fixed output voltage/current, polarity and connector (often barrel or other non-USB DC). For multi-port USB / GaN wall bricks with PD or PPS behaviour, use /electronics-sourcing-china/wall-chargers. For CC/CV lighting LED drivers, use /electronics-sourcing-china/led-drivers — those are not this AC/DC barrel/fixed PSU page. If the project needs both, run separate RFQs so electrical interfaces stay comparable.
Why must polarity and connector dimensions appear in the RFQ?
Two adapters with the same voltage can still be incompatible if polarity or barrel OD/ID differ. Asking for polarity and connector dimensions (or a mating drawing) keeps suppliers quoting the same mechanical and electrical interface before price comparison.
Does Sephalis manufacture or certify AC/DC power adapters?
No. Sephalis is a buyer-side sourcing and supplier-research service. It helps compare manufacturers and collect specifications, quotations, samples and supplier documents. Manufacturing capability claims and any certificates remain with the supplier; formal electrical safety or market-access approval stays with the relevant specialists.
How should supplier certificates and test reports be used?
List destination markets in the RFQ and request matching documents. Treat certificates and test notes as evidence to collect and review against the brief — supplier claims or documents, not automatic import approval or a Sephalis guarantee. If report-to-model match or independent lab status is unclear, mark that item unknown until the buyer or a specialist closes it.
How should MOQ, private label and OEM tiers be compared?
Ask each supplier to separate logo/label-only, colour/housing and full custom/mold paths, and to split product MOQ from packaging or tooling MOQ. A low MOQ claim is not comparable until those lines, sample terms and lead times are written down.
Need a wider electronics supplier search?
Browse the full cluster for consumer electronics, accessories, chargers, PCB assembly, low-MOQ manufacturing, OEM/ODM, private label, second sourcing and supplier verification.
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