140W GaN charger supplier<\/a>.<\/p>\nFrequently asked questions<\/h2>\n
The certification questions buyers ask most, answered the way we answer them on calls.<\/p>\n
Which certifications does a factory include by default?<\/h3>\n
A competent power supply OEM includes the baseline five on its standard platforms: CE for the EU, CB (IECEE) as the reusable safety report under IEC 62368-1, FCC for the US, RoHS for substances and ErP for efficiency \u2014 plus ISO 9001 for the quality system. “Include” means the factory holds the certificates and issues model-specific reports for your variant. It does not mean every national mark is covered: UL, ETL, UKCA, KC and INMETRO are buyer-funded filings the factory supports. Ask for the PDFs, not the claim.<\/p>\n
Who pays for UL, ETL or UKCA?<\/h3>\n
The buyer does. These national marks name a certificate holder \u2014 usually the importing brand \u2014 along with local responsible parties where the market requires them, so the fees, the filing and the renewal all sit on the buyer’s side. The factory contributes the CB report, test samples, construction data and filing support, and often manages the correspondence with the power adapter certification body. Budget the application and lab fees as one-off costs and expect annual surveillance or renewal fees on top; itemize both in the quote so nothing hides inside the unit price.<\/p>\n
How long does CB certification take?<\/h3>\n
For a modified standard model that stays inside a certified family, the CB paperwork is largely an update to an existing report, and the practical wait is measured in weeks. A full custom build adds sampling first \u2014 2\u20134 weeks \u2014 and then the lab queue for testing to IEC 62368-1. Treat any timeline as indicative until the lab confirms a slot: queues move, and seasonal peaks are real. The planning rule that matters is simpler \u2014 start the CB conversation at RFQ so testing runs beside sampling instead of after it.<\/p>\n
Can I ship to the US with only FCC?<\/h3>\n
Legally, FCC covers electromagnetic emissions and is what US customs cares about for an adapter. But legality and sellability differ: many retailers, insurers and corporate procurement teams want an NRTL safety mark such as UL or ETL before the product reaches a shelf, and some channels effectively require it commercially. So the answer is yes for the border, often no for the big-box aisle. Decide at RFQ which channel you are selling into, because the NRTL mark is a buyer-funded filing with its own queue you will want started early.<\/p>\n
What is ErP and does it apply to chargers?<\/h3>\n
ErP is the EU framework for energy-related products, and for external power supplies it sets binding limits on average active-mode efficiency and no-load power, tiered by output rating. Chargers and adapters sold into the EU must meet it, and the technical file should contain the measured results. It is a design input rather than a label: missing the no-load tier usually means a board revision, not a form to fill in. Ask for the reference design’s measured figures at your operating points during the RFQ, before tooling locks anything in.<\/p>\n
Does USB-IF certification matter for chargers?<\/h3>\n
Compliance with the USB Power Delivery specification matters a great deal \u2014 interoperability with phones and laptops depends on it \u2014 so design to the PD 3.2 specification with SPR AVS support and verify protocol behavior in test. USB-IF certification itself is a separate logo-licensing program some brands pursue for marketing; it is a buyer decision, with its own process and costs. Be wary of any supplier claiming “USB-IF certified” without a TID (test ID) they can show you. Ask for the protocol test evidence instead of the logo claim.<\/p>\n
What documents should I receive with my order?<\/h3>\n
At minimum: the CB test report and certificate for your model, the CE declaration of conformity, the FCC test report and SDoC records, RoHS and ErP declarations, the ISO 9001 certificate, the frozen BOM, and the production test limits used on the line. If batteries ship in the order, add the UN38.3 test summary and transport documents. Ask for this pack before the PO, not at shipment \u2014 a factory that produces it in a day has its documentation house in order, and that order is exactly what customs and retailers will ask for next.<\/p>\n
What happens if power adapter certification planning starts too late?<\/h3>\n
The national queues stack onto production instead of running beside it, so your launch date absorbs every week of delay twice. Worse, late planning surfaces design problems \u2014 an ErP no-load miss, a rating that falls outside the certified family \u2014 when the only fixes are a board spin or a retest, each with fresh fees and fresh weeks. In practice a late start costs more in schedule than in certificate fees. The remedy is unglamorous: hand the market list and the launch date to the factory at RFQ and file in parallel.<\/p>\n
Do certification costs scale with wattage?<\/h3>\n
Not the way unit costs do. Lab fees track testing time and the number of filings rather than the adapter’s rating, so a 240W build and a 65W build often carry similar certificate costs \u2014 though higher-power designs can need extra test setups or cooling arrangements that add hours. What scales most is the number of markets, because each national filing adds its own fee. Plan per market, not per watt, and get the fees as line items so the quote survives comparison across suppliers.<\/p>\n