CMJ Component Registration
Voluntary Component & Material Approval

CMJ Registration

The information on this page is intended for reference purposes only.
See JQA's Guide or the CMJ website for more detailed requirements.

CMJ Registration Benefits

Reduced testing cost and lead time and product certification

CMJ Registration is a voluntary approval system for components and materials used in electrical products and is intended to supplement the PSE Law and S-mark schemes.

CMJ Registration is accepted in place of individual component testing by all certification bodies that issue PSE certification and S-mark certification.

For component and material manufacturers, CMJ Registration can provide a competitive edge for obtaining supplier contracts with end product manufacturers in Japan. Further, obtaining CMJ Registration prior to providing components and materials is a useful tool to confirm whether your components are in compliance with Japanese requirements.

For end product manufacturers, using CMJ-registered components in products can greatly reduce end product certification costs and lead times.

If you intend to sell your product in Japan, it is highly recommended that you select component suppliers that have obtained CMJ Registration.

CMJ Registration Scheme Scope

Components and materials can be registered under the following 15 categories.

Components Materials
  • Fire-retardant and electric strength tests for sheathed wire for appliances (F mark / K mark)
  • Thermostats
  • Radio interference suppression capacitors
  • Phase advance capacitors for motors
  • Switches for appliances
  • Current fuses
  • Anti-tracking plugs
  • Confirmation test of upper limit in operation temperature for insulation material
  • Ball pressure test for thermoplastic resin
  • Horizontal burning test of synthetic resin for enclosures
  • Vertical burning test of laminates for printed circuits
  • Vertical burning test of synthetic resin materials
  • Glow-wire test
  • 0.1mm VICAT softening temperature test
  • Tracking resistance test (only for the materials of the power plug)

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