FCC
The full name of FCC is Federal Communications Commission, which is the United States Federal Communications Commission in Chinese. Established in 1934 by Communications, it is an independent agency of the United States government directly accountable to Congress. The FCC coordinates domestic and international communication by controlling radio broadcasting, television, telecommunications, satellites, and cables. To ensure the safety of wireless and wired communication products related to life and property in over 50 states, Colombia, and regions under the jurisdiction of the United States, the FCC's Engineering and Technology Department is responsible for providing technical support to the committee and handling equipment certification matters. Many wireless application products, communication products, and digital products require FCC approval to enter the US market.

Authentication Type
On November 2, 2017, the Federal Communications Commission (FCC) merged DoC and Verification into SDoC (Supplier's Declaration of Conformity), and SDoC certification will replace FCC Verification and DoC certification procedures. All devices eligible for FCC Verification and DoC certification procedures can adopt SDoC certification procedures.

FCC has two different certification methods for electronic products, namely FCC SDoC and FCC ID (Certification). The former is applicable to ordinary products without wireless function, while the latter is applicable to products with wireless function.

Comparison and difference between FCC SDoC and FCC ID

                                     FCC SDoC                                                    FCC ID
Applicable products: ordinary products without wireless function, such as display screens, lighting fixtures, etc. Products with wireless function, such as mobile phones, Bluetooth earphones, etc
Test Content Electromagnetic Compatibility EMC Electromagnetic Compatibility EMC+RF
The testing cycle is short and long

Which products need FCC-ID
1. Transmission frequency: 125KHz, 13.56MHz
Typical products: Gate card reader, bus card reader, wireless charger;
2. Transmission frequency: 27MHz, 49MHz
Typical products: remote-controlled toys, wireless mice;
3. Transmission frequency: 315MHz, 433MHz (intermittent, periodic products, remote control toys are prohibited from use)
Typical products: remote control switch, wireless doorbell, anti-theft device;
4. Transmission frequency: 88-108MHz
Typical product: Car mounted FM transmitter;
5. Transmission frequency: 902-928MHz, 2400-2483.5MHz, 5725-5850MHz
Typical products: remote control toys, wireless mice, Bluetooth speakers, WIFI unmanned aerial vehicles, smart home products;

FCC Common Standards
Among them, FCC PART 15 and PART 18 are the most widely used:
Scope of application of FCC standards
FCC PART15 C/E/F Intended Radiation Device Testing
FCC PART 18 Industrial, Scientific, and Medical Equipment
FCC PART 22 Public Mobile Communications Services
FCC PART 24 Personal Communications Services
FCC PART 25 Satellite Communication Services
FCC PART 27 Other FCC Wireless Communication Services
FCC PART 68 Telecommunications Terminal Equipment
FCC Part 15 provides regulations for intentional, unintentional, or instantaneous transmission devices that do not require a personal license for use. It includes technical specifications, administrative requirements, and other market access conditions. The products are mainly divided into four categories: unintentional launch devices, intentional launch devices, personal communication devices without licenses, and basic information devices for countries without licenses.
FCC Part 18 specifies the electromagnetic energy emitted by industrial, scientific, and medical equipment (ISM) operating on a certain frequency spectrum to avoid harmful interference to authorized wireless communication services.

FCC-ID authentication application process
1. The customer submits an application form to the testing agency;
2. The customer prepares test samples (wireless products require a frequency converter) and provides product information (see information requirements);
3. The testing agency issues a draft report, the customer confirms it, and issues a formal report;
4. If it is FCC sDoC, the project is completed; If applying for FCC ID, submit the report and technical information to TCB;
5. The TCB audit is completed and the FCC ID certificate is issued. The testing agency sends the official report and FCC ID certificate;
6. After obtaining FCC certification, enterprises can use the FCC logo and related statements on their products;

Note: Manufacturers who are applying for FCC ID certification for the first time need to register FCC-FRN with FCC to establish an application company file. The certificate issued after TCB review will have the FCC ID number, which is usually composed of "Grantee code" and "Product code".
Manufacturer code: a three digit number or uppercase letter issued directly by FCC;
Product code: It consists of numbers, letters, and "-" characters, but there cannot be two or more consecutive "-" characters used, and the first and last characters cannot use "-" characters. The maximum length of this code is 14 characters, and customers can customize the number.

FCC-ID Certification Application Materials
1. User Manual
2. Block Diagram
3. Circuit principle description Operation description
4. Circuit schematic
5. RF modulation method
6. Rated Power Declaration
7. Application Form TCB Form 731
8. Authorization Letter POA
9. FCC Confidential Letter

Note: FCC ID certification requires the submission of the following list of documents and requirements:
(1) FCC application form: The application company name, address, contact information, product name and model, usage standards, and other information must be accurate and correct;
(2) FCC authorization letter: must be signed and stamped by the contact person of the applying company and scanned into an electronic file;
(3) FCC Confidentiality Letter: A confidentiality letter is an agreement signed between the applicant company and the TCB agency to keep product information confidential. It must be signed, stamped, and scanned into an electronic file by the applicant company's contact person;
(4) Block diagram: All crystal oscillators and their frequencies need to be drawn and consistent with the circuit diagram;
(5) Circuit diagram: It must be consistent with the crystal frequency, crystal quantity, and crystal position in the block diagram;
(6) Line description: It is required to be in English and clearly describe the principle of the product's functional implementation;
(7) User manual: requires FCC Statement;
(8) Label and label location: The label should have FCC ID number and Statement, and the position of the label should be prominent;
(9) Product interior and exterior photos: require clear and concise images, and add notes if necessary;
(10) Test report: Require completion of testing and comprehensive evaluation of the product according to standard terms;