When visiting clients and discussing related projects, the topics of BQB certification and EMI certification often come up. As I am not a hardware engineer and have not been responsible for these matters before, I felt the need to have a basic quick understanding.BQB is the qualification certification for Bluetooth. Any product you sell that bears the Bluetooth trademark must have undergone BQB certification.EMI stands for Electromagnetic Interference testing.This certification ensures that your electronic products do not easily get interfered with by other devices while operating, nor do they emit excessive electromagnetic noise that could disrupt the normal operation of other devices, acting like a “bad neighbor”.Certifications such as CE (Europe), FCC (USA), and 3C (China) include very important EMI testing components. Therefore, EMI is usually not a standalone certificate but a core component of these safety certifications.
If the Bluetooth chip used has already passed BQB certification, does the entire device made with this chip also need to undergo BQB certification again?
Typically, when using a Bluetooth chip that has already passed BQB certification to manufacture a complete product, it does not require a full BQB certification again, but generally needs to apply for BQB listing.
BQB listing (previously known as EPL listing, now officially referred to as QDL listing) is a simplified certification method. It allows manufacturers to directly reference the QDID (Qualified Design ID) number of the certified Bluetooth module or chip they are using to prove that their product’s Bluetooth functionality meets the standards. This means that the complete product itself does not need to undergo complex RF, protocol stack, and other tests again, saving a significant amount of time and testing costs.
To apply for a listing, it is usually necessary to prepare documents such as the company business license, product information, authorization letter from the module supplier, and the module’s QDID number.
Previously, clients have asked us for the QDID number of our Bluetooth chips specifically for the purpose of applying for a listing and undergoing BQB certification.
The QDID of a Bluetooth chip is a 6-digit decimal integer, for example: 123123, which is not publicly disclosed. It can be authorized to relevant clients for reference to undergo BQB testing.
To perform EPL listing: Clients log into the SIG certification platform (QDID Listings) and select the “End Product Listing” path:
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During the application process, you need to enter the QDID of your module.
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Upload the listing authorization letter you provided.
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Fill in the information about their own product (product name, model, etc.).