Implementing the Supplier’s Declaration of Conformity (SDoC)
Under the FCC’s Rules, equipment subject to the Supplier’s Declaration of Conformity (SDoC)—such as digital circuitry and receivers that tune between 30 MHz and 960 MHz—must comply with the emissions limitations of FCC Part 15B. These limits apply to unintentional emissions from electronics like microprocessors, unlike intentional transmitters such as WiFi, Bluetooth, and other radio devices.
What is the SDoC Process?
The updated Rules consolidate two prior procedures—Verification and Declaration of Conformity—into a single streamlined process called the Supplier’s Declaration of Conformity (SDoC).
Who Needs to Comply?
Devices that emit both intentional and unintentional RF signals must follow either Certification, SDoC, or both, based on how they’re classified under FCC rules (e.g., Part 15.101 for unintentional radiators). Mobile phones, WLAN equipment, notebook and tablet computers often fall under both categories and require dual compliance.
Class A and B Equipment
The SDoC process applies to both Class A (industrial/commercial) and Class B (residential) equipment. Previously, Class A required Verification, while Class B required either a DoC or Certification. This update simplifies things under one process.
Testing and Documentation
Manufacturers must perform emissions testing and document the results in a test report. Importantly, the lab used does not need accreditation—any competent testing facility may conduct the tests.
Labeling Requirements
Manufacturers must still include the FCC warning statement either on the product label or in user documentation. The FCC logo is now voluntary and no longer mandatory.
Certification is still an option for manufacturers who prefer a more formal authorization method or are required to certify by rule.
Authorization Support Through VEC
ACB has partnered with Violette Engineering Corporation (VEC) to provide full support and guidance for SDoC authorization and compliance services.
Visit their official SDoC services page here:
https://violetteengineering.com/vec-sdoc-services/
