PSE Certification for Electronics Imported to Japan
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PSE (Product Safety Electrical Appliance & Material) is Japan's mandatory mark for electrical products, and it splits into two categories: the diamond PSE for higher-risk items like chargers and lithium battery packs, and the round PSE for lower-risk goods. The diamond mark requires testing by a METI-registered conformity assessment body, which adds time and cost beyond a CE or FCC run. If you're selling electronics into Japan, PSE is non-optional and won't simply transfer from your existing EU/US test reports.
When you certify for Japan, the key question is which PSE category your product falls under — diamond (specified) products need third-party certification, round (non-specified) products allow self-declaration. We confirm the category early because a misclassification means re-testing and a blocked import.
Guides (1)
FAQ
What's the difference between diamond and round PSE?
Diamond PSE applies to 'specified' higher-risk products (e.g. chargers, power supplies, lithium packs) and requires testing by a METI-registered body. Round PSE covers 'non-specified' lower-risk products and allows manufacturer self-declaration.
Can my CE or FCC report be reused for PSE?
Not directly. PSE references Japanese standards and the diamond category requires its own third-party testing, though some IEC-based test data can reduce overlap. Budget separate time and cost for the Japan path.
How long does PSE certification take?
Round PSE self-declaration is quick once documentation is ready; diamond PSE typically adds several weeks for third-party testing at a registered body. Plan it in parallel with your other market certifications.
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