EMI 47 CFR FCC Part 15B

The so-called fcc part 15 certification actually refers to Title 47 of the Code of Federal RegULations (CFR), Part 15 (47 CFR 15). Title 47 of the U.S. CFR covers everything from spurious emissions to unlicensed low-power broadcasting. FCC Part 15 is primarily related to EMC (Electromagnetic Compatibility).

The rules and regulations of FCC Part 15 are intended to align with European CISPR standards. While there are some differences, the two sets of standards remain largely consistent in their key features.

Scope of FCC Part 15

FCC Part 15 is divided into three main sections:

1. FCC Part 15A

 This section specifies the conditions under which intentional, unintentional, or incidental radiators may operate without an individual license. It also contains technical specifications, administrative requirements, and marketing-related provisions for Part 15 devices.

2. fcc part 15b

 This section covers the operation of intentional or unintentional radiators that do not comply with Part 15. Such devices must obtain a license under Section 301 of the U.S. Communications Act of 1934.

3. FCC Part 15C

 Unless specifically exempt, it prohibits the operation or sale of intentional or unintentional radiators that do not comply with the administrative and technical requirements of Part 15, including prior FCC authorization or verification. The procedures for equipment authorization and verification are detailed in Subpart J of Part 2of Title 47.

Categories of Devices under FCC Part 15

- Class A Digital Devices

Defined under Part 15 as devices marketed for use in commercial, industrial, or business environments.

- Class B Digital Devices

Defined under Part 15 as devices marketed for use in residential environments. Examples include:

- Personal computers

- Calculators

- Other similar electronic devices sold for general public use