For hardware engineers and product managers sourcing microSD cards for US or EU markets, compliance is not a checkbox exercise—it is a legal requirement that directly impacts your ability to sell, your liability exposure, and your brand reputation. A shipment held at customs, a product delisted from Amazon, or a regulatory fine can disrupt your entire supply chain.
Unlike consumer retail buyers, B2B buyers integrating microSD cards into POS terminals, security cameras, or edge devices must verify compliance at the component level. This guide breaks down the four core regulatory frameworks—RoHS, REACH, CE, and FCC—and provides a procurement checklist to ensure your wholesale orders meet US and EU legal standards.
1. EU Compliance: CE Marking, RoHS, and REACH
The European Union enforces some of the world’s strictest product regulations. A microSD card sold in the EU must comply with multiple directives simultaneously.
1.1 CE Marking: The Gateway to the EU Market
The CE mark indicates that a product meets the essential requirements of applicable EU harmonization legislation. For standard microSD cards (without wireless functionality), the primary applicable directives are:
EMC Directive (2014/30/EU): Ensures the card does not emit excessive electromagnetic interference and is immune to external interference.
RoHS Directive (2011/65/EU): Restricts hazardous substances.
For microSD cards with wireless capabilities (e.g., Wi-Fi SD cards), the Radio Equipment Directive (RED) (2014/53/EU) applies, adding spectrum usage and radio safety requirements.
Critical Importer Obligation: If you are importing microSD cards into the EU from a non-EU manufacturer (such as a Chinese factory), you become the “importer” under EU law. You must verify that the manufacturer has drawn up an EU Declaration of Conformity (DoC) and that a manufacturer or authorized representative is identified. The manufacturer must also have an EU-based authorized representative if required by the applicable directive.
1.2 RoHS 3: The 10 Restricted Substances
RoHS 3 (Directive 2015/863) restricts ten hazardous substances in electrical and electronic equipment. For microSD cards, the restricted substances and their common applications are:
| Restricted Substance | Maximum Concentration | Common Risk in MicroSD |
|---|---|---|
| Lead (Pb) | 0.1% | Solder, glass/ceramic components |
| Mercury (Hg) | 0.1% | Switches, relays (rare in microSD) |
| Cadmium (Cd) | 0.01% | Contacts, plating |
| Hexavalent Chromium (Cr VI) | 0.1% | Corrosion protection coatings |
| PBB (Polybrominated Biphenyls) | 0.1% | Flame retardants |
| PBDE (Polybrominated Diphenyl Ethers) | 0.1% | Flame retardants |
| DEHP, BBP, DBP, DIBP (Phthalates) | 0.1% each | Plasticizers in packaging or housing |
Key Exemption for MicroSD Cards: Many microSD cards rely on RoHS Exemption 7(c)-I, which permits lead in glass or ceramic materials (other than dielectric ceramics in capacitors) used in electronic components. When reviewing a supplier’s DoC, look for this exemption explicitly stated. It is not a violation—it is a legally recognized exemption.
1.3 REACH: The SVHC Candidate List
REACH (Regulation (EC) No 1907/2006) is broader than RoHS. It regulates all chemicals, and for electronics, the most critical obligation is the SVHC (Substances of Very High Concern) Candidate List, which contains over 250 substances and is updated roughly twice a year.
The 0.1% Rule: If any SVHC is present in an article (a component, not the finished product) above 0.1% by weight, you trigger two obligations:
Article 33 Communication: You must provide safe-use information to your customers.
SCIP Notification: You must notify ECHA’s SCIP database before placing the article on the EU market.
Critical nuance: The 0.1% threshold applies per article (e.g., the microSD card itself), not per finished device. A small sub-component can trigger duties even if the finished device is below the threshold.
EU Compliance Checklist for Buyers
Obtain a valid EU Declaration of Conformity (DoC) from the supplier, citing EMC Directive 2014/30/EU and RoHS Directive 2011/65/EU & (EU) 2015/863.
Verify that the DoC includes the manufacturer’s name, address, and the applicable harmonized standards (e.g., EN 55032, EN 55035, EN IEC 63000).
Confirm whether RoHS Exemption 7(c)-I is claimed and documented.
Request a REACH SVHC declaration confirming the card does not contain SVHCs above 0.1% by weight, or disclosing any that do.
Ensure your supplier provides SCIP notification support if SVHCs are present above the threshold.
If you are the EU importer, verify that the manufacturer has an EU authorized representative or that you are prepared to assume importer obligations.
Confirm the CE mark is applied to the product or packaging (minimum 5mm height).
2. US Compliance: FCC Part 15B
In the United States, the Federal Communications Commission (FCC) regulates electronic devices under Title 47 CFR Part 15. Standard microSD cards are classified as unintentional radiators (they use digital logic but do not intentionally emit radio frequency energy) and fall under Subpart B of Part 15.
2.1 FCC Part 15B Requirements
MicroSD cards must meet the Class B limits for unintentional radiators, which are more stringent than Class A limits (Class B is intended for residential environments, while Class A is for commercial/industrial environments). The relevant test standards are:
ANSI C63.4: Measurement methods for radiated and conducted emissions.
FCC 47 CFR Part 15, Subpart B: The regulatory limits.
Testing and Authorization: For unintentional radiators like standard microSD cards, the equipment authorization procedure is typically Verification or Supplier’s Declaration of Conformity (SDoC). This means the manufacturer (or importer) must ensure the product has been tested and complies, and must maintain test records. A formal FCC ID is generally not required for standard microSD cards—but microSD cards with wireless functionality (e.g., Wi-Fi) require FCC Part 15C certification and an FCC ID.
US Compliance Checklist for Buyers
Obtain an FCC test report for the microSD card model, referencing FCC Part 15 Subpart B, Class B and ANSI C63.4.
Confirm the supplier maintains a Supplier’s Declaration of Conformity (SDoC) or has completed the required verification procedure.
If the card has wireless functionality, verify FCC Part 15C certification and the FCC ID.
Ensure the product labeling complies with FCC requirements (e.g., FCC logo if applicable, and compliance statements in the user manual).
3. SD Association Licensing: The Trademark Requirement
Beyond government regulations, there is an industry-specific licensing requirement that is often overlooked: SD Association (SDA) licensing.
Any product that uses the SD, microSD, SDHC, SDXC, or SD Express trademarks must be licensed by the SD Association. This is not a government regulation, but it is enforced by customs and major retailers to prevent trademark infringement. Unlicensed cards can be seized or delisted from platforms like Amazon.
SDA Licensing Checklist
Verify that the supplier is a licensed SD Association member and has the right to use the microSD logo.
Request proof of SDA licensing or a trademark license agreement.
Ensure the product labeling and packaging correctly use the SD trademarks per SDA guidelines.
4. Supplier Documentation and Technical File Checklist
When sourcing wholesale microSD cards, you should request a complete compliance dossier from your supplier. The following documents are essential for both EU and US markets:
| Document | Purpose | What to Verify |
|---|---|---|
| EU Declaration of Conformity (DoC) | Legal attestation of CE compliance | Signed, dated, lists applicable directives and standards |
| RoHS Test Report | Verifies restricted substance limits | Issued by an accredited lab (e.g., SGS, TÜV), covers all 10 substances or valid exemptions |
| REACH SVHC Declaration | Confirms SVHC status | Lists any SVHCs above 0.1% or states none present |
| FCC Test Report | Verifies Part 15B compliance | References ANSI C63.4, Class B limits |
| SD Association License Proof | Trademark compliance | Confirms supplier is a licensed SDA member |
| ISO 9001 Certificate | Quality management system | Valid and issued by an accredited body |
| Material Safety Data Sheet (MSDS) | Chemical safety information | Available for the card and packaging |
Red Flags to Watch For:
DoC that lists directives but omits the specific harmonized standards.
RoHS reports older than 2 years (the SVHC list is updated regularly).
Claims of “FCC certified” without a test report or SDoC.
Refusal to provide SDA licensing proof.
5. HT Semi's Compliance Positioning
For commercial-grade deployments—POS terminals, Android edge devices, smart retail kiosks, security cameras, and dash cams—HT Semi provides microSD cards designed for the unique demands of these environments:
Commercial-grade temperature range: Validated for 0°C to 70°C operation, suitable for typical in-cabin, indoor, and commercial conditions.
High-endurance NAND: Optimized for continuous loop recording and logging.
Compliance documentation: HT Semi provides the necessary DoC, RoHS, REACH, and FCC test reports for B2B procurement, along with SD Association licensing support.
OEM customization: Custom logo printing, preloaded content, and packaging, with compliance documentation aligned to your target market.
For hardware engineering and procurement teams, the most reliable path is to source from an original manufacturer like HT Semi that controls NAND screening, firmware, and packaging, and can provide the full compliance dossier for your target market. To request compliance documentation, confirmed MOQ, and lead time for your custom microSD project, contact HT Semi directly with your device parameters and target deployment regions.