FCC Certification: What Electronics Importers to the US Need to Know

FCC certification is required for any electronic device sold or marketed in the United States that generates or uses radio frequency (RF) energy above 9 kHz. It applies to intentional radiators (WiFi, Bluetooth, LoRa, cellular), unintentional radiators (microprocessors, switching power supplies, oscillators), and equipment connected to the public switched telephone network. If your product ships to the US, this is not optional.

Overview

The Federal Communications Commission (FCC) regulates RF devices under the Communications Act of 1934, as amended. The relevant rules are codified in Title 47 of the Code of Federal Regulations (47 CFR). Enforcement includes market surveillance, recall authority, and fines up to $100,000 per violation per day.

The FCC’s Equipment Authorization System (EAS) maintains a public database at apps.fcc.gov/oetcf/eas — every certified product gets an FCC ID, and you can look up any existing grant of authorization there. This database lookup is your first check when evaluating whether a module your factory uses already has approval.

Applicability

Part 15 is the most relevant section for consumer electronics and commercial electronics:

• Subpart B: Unintentional radiators (digital devices, computing peripherals, industrial equipment)
• Subpart C: Intentional radiators (low-power transmitters, 2.4 GHz devices)
• Subpart E: Unlicensed national information infrastructure (UNII) devices (5 GHz WiFi)

Part 22: Cellular/paging transmitters Part 27: Various broadband wireless services Part 68: Equipment connected to the PSTN (VoIP adapters, modems with analog ports)

Key Requirements

Critical distinction: Intentional radiators — any device with a deliberate RF transmitter — must go through TCB (Telecommunication Certification Body) certification. SDoC (Supplier’s Declaration of Conformity) is not permitted for intentional radiators. If your product has WiFi or Bluetooth, you need a TCB.

Process & Timeline

Path 1: SDoC (unintentional radiators only)

1. Test at accredited lab (NVLAP-accredited or equivalent)
2. Compile technical documentation
3. Prepare and sign the SDoC
4. Label product with FCC compliance statement
5. No filing with FCC required — but retain documentation 2 years

Path 2: TCB Certification (intentional radiators)

1. Pre-compliance EMC scan at Chinese lab — identifies failures early ($300–1,500)
2. Select a TCB: UL, TÜV Rheinland, Bureau Veritas, SGS, Nemko, PCTEST
3. Submit application with product samples and technical documentation
4. Lab performs RF testing per applicable Part 15 subpart
5. TCB issues Grant of Equipment Authorization
6. FCC ID assigned and published in EAS database
7. Label product with FCC ID (format: GRANTEE CODE + PRODUCT CODE)

Timeline: 4–8 weeks for straightforward BLE/WiFi products; 8–12 weeks for multi-radio or complex products. Rush processing available from some TCBs for additional fee.

Cost:

• Pre-compliance scan (Chinese EMC lab): $300–1,500
• Full TCB certification, single radio (BLE or WiFi): $3,000–6,000
• Dual-band WiFi (2.4 + 5 GHz): $6,000–10,000
• Multi-radio (WiFi + BLE + cellular): $10,000–15,000+
• SDoC-only products (unintentional): $1,500–3,000 for test only, no filing fee

Getting It Done from China

Modular transmitter approval significantly reduces costs and time. If your product uses a pre-certified module — ESP32, nRF52840-based IoT modules, Sierra Wireless, u-blox — that module’s FCC grant covers the RF portion. The host device may then only need:

• Verification that the module is used per its grant conditions (antenna type, max power)
• Class B unintentional radiator testing for the host device emissions
• Label with the module’s FCC ID

Check the module’s FCC grant in the EAS database before assuming modular approval applies — some grants impose restrictions on host device configuration.

Chinese labs accredited for FCC pre-compliance and some full testing: SGS (Shanghai, Shenzhen), Bureau Veritas (Shenzhen), Intertek (Guangzhou, Dongguan), TÜV Rheinland (Guangzhou). These labs can conduct testing under the Unilateral Mutual Recognition Arrangement and submit to TCBs directly.

FCC label requirements: The FCC ID must be permanently affixed to the product and legible. For small devices, electronic labeling (via software menu) is permitted under 47 CFR 15.19(a)(10). Confirm label size and placement with your TCB before tooling.

Common Mistakes

1. Using a module’s FCC ID without verifying grant conditions. Many modules are certified for specific antenna configurations or maximum power levels. If your factory modifies the antenna or RF path — even slightly — the module’s grant may not cover your product. Always read the actual grant document from the EAS database, not just the module datasheet.

2. Counterfeit FCC IDs on components. This is common with cheap Chinese RF modules sourced off Alibaba. The FCC ID printed on the IC or module may be real (belonging to a legitimate product) but the underlying component does not match the certified unit. If you use these in your product and it gets tested, it fails. Verify FCC ID authenticity via the EAS database — the grantee name and product description should match your module.

3. Hardware changes after certification. FCC authorization is granted for a specific hardware configuration. Swapping the PA, changing the antenna type, or modifying the PCB layout near RF traces may constitute a change requiring new testing or a Class II Permissive Change filing. Establish a change control process before production ramp. Pre-shipment inspection is your last opportunity to catch label and documentation issues before goods clear US customs.

4. Misunderstanding SDoC scope. Supplier’s Declaration of Conformity is a self-declaration — no FCC filing, no FCC ID, no third-party review. However, you are legally responsible for maintaining technical documentation and making it available to the FCC on request. SDoC is not a low-effort shortcut; it shifts the compliance burden onto the importer fully. If your product is recalled, your SDoC documentation must withstand FCC scrutiny.

5. Not testing the final production configuration. FCC testing must be performed on a production-representative unit — same PCB revision, same housing, same antenna, same firmware. Testing a prototype with an open housing and a bench power supply, then shipping a different configuration, is a compliance violation. Some Chinese factories submit older prototype units for certification to save cost, then change the design. Verify that the tested unit matches your BOM.

Enforcement and Market Access

FCC enforcement is real. The FCC’s Office of Engineering and Technology (OET) conducts market surveillance, and US Customs and Border Protection (CBP) can detain shipments of uncertified RF devices at the port of entry. Key enforcement realities:

• Intentional radiators without a valid FCC grant are prohibited from import and sale — not merely subject to a fine. CBP can seize the shipment.
• Importers, distributors, and retailers can all be held liable for uncertified devices — not only the original equipment manufacturer.
• FCC fines for marketing uncertified devices start at $10,000 per violation per day, with maximum penalties up to $100,000/day for each violation. In major enforcement actions, total penalties have reached millions of dollars.
• The FCC publishes enforcement actions publicly — a Notice of Apparent Liability (NAL) against a company appears in a searchable database and affects downstream partner relationships.

For Chinese manufacturers selling directly on US e-commerce platforms (Amazon, Walmart Marketplace, eBay), platform compliance programs increasingly require FCC documentation. Amazon’s marketplace now formally requires FCC SDoC or TCB grant documentation for wireless products sold by third-party sellers. Products flagged for missing FCC compliance face listing suspension — equivalent to a US market ban for the seller.

FCC vs. CE: Running Both Programs Concurrently

Most electronics imported from China into both the US and EU require both FCC and CE authorization simultaneously. Running these programs concurrently saves 4–8 weeks compared to running them sequentially:

Accredited Chinese labs that can run both programs from a single submission: Intertek (Guangzhou, Dongguan), SGS (Shenzhen, Shanghai), TÜV Rheinland (Guangzhou), Bureau Veritas (Shenzhen), CBTL (Shenzhen). Request a combined FCC + CE project quotation from a single lab — coordination is simpler and shared testing events (EMC radiated emissions, for example) reduce total cost by 15–30%.

Labeling Requirements in Detail

FCC label requirements are more specific than many importers realize. Non-compliance is a common reason for customs holds:

For products with a TCB grant (intentional radiators):

• FCC ID must be permanently affixed and legible
• FCC ID format: grantee code (3 characters) + product code (≤14 characters), e.g. 2ABCD-MYPRODUCT1
• Must also display: “This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.”
• For small devices: electronic labeling permitted under 47 CFR 15.19(a)(10) — accessible via software menu; physical label is then replaced with a notice directing users to the electronic label
• Font size: minimum 4-point type; label must contrast with background

For SDoC products (unintentional radiators):

• Must display the FCC compliance statement (two-condition statement above)
• No FCC ID required — but if you voluntarily include one, it must be accurate

Label placement verification: Confirm label placement with your TCB before tooling the housing — some designs require a label window in the housing or an insert card. Changes to label placement after tooling may require re-testing if the change affects RF performance.

Related Resources

• CE Marking for Electronics — EU parallel requirement, often run concurrently
• TELEC/MIC Type Approval — Japan radio certification
• UKCA Marking — UK requirement post-Brexit
• Quality Inspection Services
• Consumer Electronics Sourcing
• IoT Modules & Components Sourcing
• How to Source Electronics from China
• Wearable Manufacturing in China