What Certifications Do Protective Cases Need for the US? FCC and California Proposition 65

The short answer: the United States has no export certification regime comparable to the EU CE mark, and no single certificate is required to clear customs. Compliance for the US market is determined feature by feature and state by state. A purely mechanical protective case normally needs no mandatory federal certification, but the moment a case integrates a wireless module, Bluetooth, GPS or digital circuitry, it must satisfy FCC Part 15 equipment authorisation and labelling requirements. And when the product is sold in California, any possibility of consumer exposure to a chemical on the Proposition 65 list triggers a duty to provide a clear and reasonable warning — or exposure to a private right of action whose cost dwarfs any administrative penalty. Put differently, the core compliance work for a protective case entering the US comes down to two decisions: does FCC apply, and do we need a Proposition 65 warning label?

The third concept that must be untangled is that UL certification and UL 94 flame ratings are not the same thing. UL certification is a third-party safety certification of a finished product and is voluntary; UL 94 is a small-scale flammability test method for plastic materials that only answers how a material behaves at a specific thickness. When a customer says "we need UL," they may mean either one, or both. This article is written for export buyers and structural engineers. It works through FCC applicability, Proposition 65 scope and warning wording, the two distinct UL requirements, and the document set an importer needs — with decision tables and label guidance you can apply directly.

Contents

• Start Here: The US Has No Export Certification, Only Rules and Liability
• Three Lanes of US Compliance: Federal, State and Commercial
• The FCC Part 15 Boundary: When a Protective Case Is Regulated
• Three FCC Routes: Verification, SDoC and Certification
• FCC Labelling Requirements in Practice
• How California Proposition 65 Works: A Warning Duty, Not a Ban
• The Proposition 65 Chemical List and Safe Harbour Levels
• Warning Wording and the 60-Day Notice Risk
• UL Certification and UL 94 Ratings Are Not the Same Thing
• Other Federal Rules: CPSIA, TSCA and FHSA
• Lithium Batteries and Transport: UN 38.3 and Dangerous Goods
• The Importer Document Checklist and How to Verify It
• Frequently Asked Questions
• Conclusion and Related Reading

Start Here: The US Has No Export Certification, Only Rules and Liability

Placing the EU and US compliance models side by side removes most of the confusion.

The most important inference from this table: in the US, nobody coming after you does not mean you are compliant. EU compliance works like a gate — non-compliant goods cannot enter. US compliance works like a chain of liability — goods may clear customs and sell freely, then provoke a lawsuit or a delisting demand months later over a label or a missing test report. For the US market, the most useful question for a buyer is not "which certificate do we need" but three others: does this product trigger FCC? Does the destination state impose a substance warning duty? And what additional certifications has the customer or retailer written into the contract?

Note that large US retailers and e-commerce platforms maintain their own supplier admission requirements, typically including third-party test reports, factory audits, packaging compliance and label review. These are contractual duties, not legal duties, but failing them costs orders just the same. Managing them separately from legal requirements is the key to keeping costs under control.

Three Lanes of US Compliance: Federal, State and Commercial

The US requirements split into three lanes, each with a different duty holder and a different consequence.

A protective case has a narrow federal exposure and a concentrated state exposure under Proposition 65. The reason is straightforward: a case consumes no power, emits nothing, is not chewed by children and does not contact food, so federal triggers are few. But a case uses plastics, flame retardants, plasticisers, inks, adhesives and metal plating, and these are exactly the recurring entries on the Proposition 65 list. That is why the first US compliance question many Chinese factories receive is a request for a Proposition 65 statement.

The FCC Part 15 Boundary: When a Protective Case Is Regulated

FCC jurisdiction depends on whether a product is an unintentional radiator or an intentional radiator. The logic is direct.

• Purely mechanical case: no electronic circuitry, FCC does not apply.
• Passive circuits such as LED lighting, current-limiting resistors or a simple switch with no clock: normally an unintentional radiator subject to Part 15 Subpart B, and often able to use the SDoC self-declaration route.
• Digital circuitry such as a microcontroller, clock oscillator, switching supply or USB data interface: clearly an unintentional radiator, subject to the Subpart B radiated and conducted emission limits.
• Radio transmitting modules such as Bluetooth, Wi-Fi, GPS receivers, RFID, LoRa or wireless charging: intentional radiators that must be certified under Subpart C (15.247 or 15.249) or Subpart E.
• Wireless charging: involves both Subpart B and Subpart C, with attention to operating frequency and limits.

A common and costly misconception: a module with its own FCC ID does not automatically make the finished case compliant. Certification covers the module under specified conditions. When the module is mounted inside a metal case, wrapped in foam, placed next to a battery or given a different antenna layout, its emission behaviour changes. Distinguish three situations:

1. Limited Modular Approval where the host satisfies the module's conditions (antenna type, separation distance, enclosure material, no co-location restriction): the module FCC ID may be used, but host-level verification is still required.
2. Full Modular Approval without antenna modification and within the granted conditions: the module FCC ID may be shown with the required instructions.
3. Single-modular or conditions not met: the finished product must be recertified under Part 15 with a new FCC ID.

When sourcing, therefore, do not accept a supplier's word that "we have FCC." Request the grant document, the grantee code and FCC ID, the conditions of use, and an explicit statement about whether the module may be installed in a metal or fully enclosed enclosure. When JUNZHJIA works on case projects with an electrical bay, the module supplier's documents are reviewed before deciding whether host-level retesting is needed, so that labelling problems are not discovered after the container lands.

Three FCC Routes: Verification, SDoC and Certification

Part 15 authorisation has three routes with very different cost and lead time, and the route must be fixed early.

SDoC means declare, retain evidence and produce it on request. The manufacturer or importer signs a declaration identifying the responsible party by name and address and keeps the test report available. No FCC ID is issued and none may be displayed. Certification means get the ID before selling. The product must display an FCC ID that can be looked up in the FCC database.

The most common error is treating SDoC as "nothing to do." SDoC still requires testing, a declaration and record retention; only the reviewing party changes from an agency to the company itself. If the FCC or an importer requests the file and you cannot produce it, the outcome is identical to having no authorisation at all.

FCC Labelling Requirements in Practice

For products authorised through Certification, labelling reduces to four rules.

1. The FCC ID must be displayed in the format FCC ID plus grant number, either on the product or, where the product is too small, on the packaging or in the instructions.
2. The compliance statement must use the prescribed wording for the applicable rule version, typically the statement that the device complies with Part 15 of the FCC Rules plus the two-condition operating statement.
3. Class A versus Class B matters. Class B applies to residential environments with tighter limits; a case intended for home or office use should be Class B. Class A applies to commercial and industrial environments and requires the corresponding notice in the instructions.
4. Never use an unauthorised FCC logo or invent an ID. Misuse is a labelling violation in its own right.

Labels are legal statements, not decorative branding. Build the FCC wording into the silk-screen or nameplate layout at the sampling stage. Adding it after mass production costs money and usually damages the appearance.

How California Proposition 65 Works: A Warning Duty, Not a Ban

Proposition 65, formally the Safe Drinking Water and Toxic Enforcement Act of 1986, works nothing like RoHS. Four points define it.

1. It is not a substance ban. It does not prohibit sales and sets no mandatory product limit.
2. It requires a clear and reasonable warning before exposing consumers to a listed chemical.
3. It is enforced by the California Attorney General and by any private party. A private enforcer who prevails can recover a share of civil penalties. That is the heart of the risk: the government is not the one suing you, a law firm is.
4. The burden of proof sits with the defendant. A company claiming exposure below the safe harbour level must produce its own evidence.

So the real question behind "do we need a Proposition 65 label" is: can you demonstrate that exposure is below the safe harbour level? If yes, no label is needed. If not — or if you are unwilling to gather the evidence — you label. For products like protective cases that are neither food-contact nor in prolonged skin contact, most companies choose to label, because the evidentiary cost far exceeds the cost of a label.

The Proposition 65 Chemical List and Safe Harbour Levels

The list is maintained by the Office of Environmental Health Hazard Assessment (OEHHA) and keeps growing, currently around nine hundred entries. The recurring items relevant to case materials include:

Safe harbour levels come in two forms: MADL, the maximum allowable dose level, and NSRL, the no significant risk level, both expressed in micrograms per day. Both measure daily exposure, which is a completely different dimension from the percentage concentration limits used in RoHS. That is why a RoHS report cannot serve as Proposition 65 evidence — one measures concentration, the other measures exposure.

Practical sourcing advice: if a customer asks for a Proposition 65 compliance statement, request third-party test reports for the specific substances of concern, usually lead, cadmium and phthalates, stating the method and detection limit. If substances are detected and no exposure assessment is possible, the usual resolution is a warning label. Reject any claim that RoHS compliance implies Proposition 65 compliance. It does not hold up legally.

Warning Wording and the 60-Day Notice Risk

Warning content and format are prescribed by OEHHA, with long-form and short-form versions and different wording for carcinogen, reproductive toxicity and combined exposures. Key points:

1. Use the prescribed wording. Do not rewrite it as a vague statement such as "this product may contain trace chemicals."
2. Match the warning word to the exposure route. Cancer and reproductive harm warnings use different phrasing.
3. The short-form warning is permitted, but the product page or instructions must provide a route to the full information, usually a website or phone number.
4. The warning must appear where a consumer will see it before purchase, typically packaging, hang tag or electronic product page.
5. For online sales, the warning must also appear on the product detail page. Packaging alone is likely insufficient.

The 60-Day Notice of Violation is where the risk crystallises. A private enforcer typically serves a 60-day notice describing the alleged violation, then enters settlement negotiations. For the company, the direct costs include settlement amounts, the plaintiff's attorney fees and its own legal costs, and these scale with the number of units sold into California rather than with unit price. Two actions reduce risk most effectively: gather evidence where you can, label where you cannot, and contractually require your supplier to warrant substance compliance with a traceability obligation.

UL Certification and UL 94 Ratings Are Not the Same Thing

These two terms are frequently confused, and they operate at completely different levels.

When a customer says "we need UL," ask three questions: does this mean finished-product UL certification or a UL 94 material rating; if certification, which UL standard applies; if UL 94, which rating at which wall thickness? Those three questions prevent a large amount of rework and wasted cost.

For protective cases, UL 94 requirements usually arrive from one of two directions. Either the customer uses the case inside or beside electrical equipment and wants flame-retardant material, or the safety standard governing the equipment inside imposes flame requirements on surrounding materials. For the reasoning behind UL 94 ratings and the difference between V-0 and V-2, see Understanding UL 94 Flame Retardant Ratings.

Other Federal Rules: CPSIA, TSCA and FHSA

CPSIA, the Consumer Product Safety Improvement Act, applies to children's products. A protective case normally is not a children's product and is out of scope. If the case is designed as a children's item — a toy storage case intended for children under twelve, for example — then lead limits, phthalate restrictions and third-party testing requirements apply. The test is whether the product is designed or primarily intended for use by children twelve and under, not what it is called.

TSCA, the Toxic Substances Control Act, covers chemical substances and specific restricted materials such as polychlorinated biphenyls, asbestos and certain persistent substances, with import notification duties. Standard case materials normally do not trigger TSCA, but special coatings and recycled content deserve a check.

FHSA, the Federal Hazardous Substances Act, covers hazardous household substances and requires warnings and child-resistant packaging where applicable. A protective case is not itself a hazardous substance, though a cleaning agent or anti-corrosion product shipped inside it would be regulated separately.

In short: these three statutes normally do not apply to an ordinary protective case, but the conclusion needs a documented basis. Keep a short statement in the technical file explaining that the product is not intended for children, contains no regulated chemicals and is not a hazardous substance, so customs does not have to be answered with a scramble later.

Lithium Batteries and Transport: UN 38.3 and Dangerous Goods

If a case ships with lithium batteries or contains them as delivered — a lighting case, an instrument case or a powered case, for example — transport regulation applies, and it is a separate track from product compliance.

1. UN 38.3 is the mandatory test requirement for lithium battery transport, completed by the cell or battery pack manufacturer with a test summary issued.
2. The mode of transport determines the rule set: air follows the IATA Dangerous Goods Regulations, sea follows the IMDG Code, and ground follows the applicable national rules such as 49 CFR. State of charge, packaging class and marking requirements differ.
3. Where the case acts as the packaging, it may need the appropriate packaging class and marking, particularly when batteries ship separately.
4. Documentation: the UN 38.3 test summary, the applicable transport declaration and packing instructions where required.

Sourcing recommendation: place battery compliance squarely with the battery supplier and require the UN 38.3 test summary. The case manufacturer should only carry structural fit and label coordination, which keeps the responsibility boundary clean.

The Importer Document Checklist and How to Verify It

Complete the following document review before placing an order, and keep the result as a compliance pack.

Four verification steps adapted to the US market: check the entity, meaning the FCC responsible party and the SDoC responsible party are consistent and the ID can be searched in the FCC database; check the scope, meaning the module grant conditions permit a metal enclosure and do not restrict the antenna type; check the dimension, meaning Proposition 65 evidence speaks to exposure rather than concentration; and check coverage, matching every soft trim, ink, plating and label adhesive on the bill of materials to a report.

Frequently Asked Questions

Q: Does a plain plastic protective case need any mandatory certification for the US?

A: A purely mechanical case with no electronic circuitry normally needs no mandatory federal certification in the United States. It is not an FCC-regulated radiator, it is not a children's product under CPSIA, and it is not a hazardous substance under FHSA, so there is no single certificate required for entry. Three caveats apply. First, if the customer is a large retailer or e-commerce platform, supplier admission usually requires third-party test reports and label review, which are contractual duties you must meet. Second, if you sell into California, the Proposition 65 warning duty still applies and may require a warning on packaging or the product page. Third, if the case later gains lighting, charging or tracking functions, FCC applicability changes immediately. The right approach is to document an applicability assessment first, then obtain the evidence the customer and destination state require, rather than relying on the hope that no certificate means no problem.

Q: If the case contains an FCC-certified Bluetooth module, does the complete case need recertification?

A: It depends on the module's authorisation type and conditions of use. If the module holds a full modular approval and you strictly preserve its antenna type, installation separation, absence of co-location restrictions and enclosure material, you can normally use the module's FCC ID and reproduce the required statements in your labelling and instructions. If the module holds a limited modular approval, or if your installation changes the antenna environment — mounting inside a metal case, wrapping it in foam, placing it near a battery or metal bracket — the original grant does not cover that use, and the host product must be tested and certified under Part 15 with a new FCC ID. The two highest-risk configurations in practice are mounting a module in a fully metal or metal-lined case and placing it against a battery or metal bracket. Hand the module grant document and conditions of use to the structural engineer during design, and reserve antenna clearance early; it is far cheaper than changing a mould after mass production.

Q: What exactly does California Proposition 65 prohibit, and why is it mainly a litigation risk?

A: Proposition 65 prohibits no substance and sets no mandatory product limit. Its core is a warning duty: before exposing consumers to a listed chemical, a business must provide a clear and reasonable warning. The list is maintained by the Office of Environmental Health Hazard Assessment and contains around nine hundred chemicals known to cause cancer or reproductive harm, with additions over time. The risk is primarily litigation because the statute allows any private party to sue after serving a 60-day notice of violation, with a share of civil penalties available to a successful plaintiff, and the defendant also bearing the plaintiff's attorney fees. That means a company can be sued even when the Attorney General takes no action. In addition, if a company claims exposure is below the safe harbour level, it carries the burden of proof. For protective cases, the commonly relevant substances include lead, cadmium, phthalates, formaldehyde and some UV stabiliser related substances, and the usual resolution is to present evidence where possible and label properly where not.

Q: Can a Proposition 65 warning appear only on the packaging and not on the product page?

A: It is not advisable, particularly for online sales. The law requires the warning to be clear and reasonable, meaning the consumer can see it before completing the purchase decision. In e-commerce, the product detail page is where that decision is made, so a warning printed only on packaging with nothing on the product page carries a high risk of being found non-compliant in either enforcement or litigation. The safer approach is to present the warning on both the packaging label and the online listing, with consistent wording. The wording must follow the standard versions prescribed by the authority, with separate phrasing for cancer and reproductive harm, or the short-form version with a route to the full information on the product page or instructions. Do not rewrite the warning into a vague statement such as "this product may contain trace chemicals." Final wording and placement should be confirmed by the importer and its legal counsel, since the importer is the responsible party.

Q: Can a RoHS report be submitted directly as Proposition 65 evidence?

A: No, it cannot substitute. The two measure different things. RoHS restricts the percentage concentration of substances in homogeneous material and is a limit-based regime. Proposition 65 concerns consumer exposure and is assessed against maximum allowable dose levels or no significant risk levels, making it an exposure-based regime. The same material can pass all ten RoHS substances and still require a warning because exposure to a listed substance approaches or exceeds a safe harbour level; conversely, RoHS restricted substances and the Proposition 65 list do not map one to one. If a customer requires Proposition 65 level evidence, provide test reports for the specific substances of concern, usually lead, cadmium and phthalates, stating the method and detection limit, and conduct an exposure assessment where feasible. If you will neither test nor assess, the standard route is a compliant warning label. Submitting a RoHS report as Proposition 65 evidence will not survive a challenge.

Q: The customer asks for "UL certification." How do I determine what they actually need?

A: Ask three questions first. One, do you mean a finished-product UL certification mark, or a UL 94 flammability rating for the plastic material? Two, if certification, which UL standard applies? Three, if UL 94, which rating at which wall thickness? Those three answers usually define the requirement. Finished-product UL certification is third-party certification of the complete product, with higher cost and lead time, and it generally requires electrical components to hold the relevant recognised approvals. UL 94 is a small-scale flammability test method that describes how a material behaves at a given thickness, and it is often satisfied by a Yellow Card from the material supplier or a third-party report. A protective case frequently does not need finished-product UL certification at all, and the customer's real need is usually a UL 94 rating to satisfy its own equipment safety standard. Clarifying the requirement avoids paying heavily for a certification that does not apply.

Q: If a lithium battery ships inside the case, what else should we watch beyond product compliance?

A: A lithium battery triggers the transport compliance track, which is separate from market access for the product itself. First, the battery must be tested to UN 38.3 and a test summary issued; this is the common baseline for air, sea and ground transport, and it is normally completed by the cell or pack manufacturer. Second, the rule set depends on the mode of transport: air follows the IATA Dangerous Goods Regulations, sea follows the IMDG Code, and ground follows the applicable national rules, with differing requirements for state of charge, packaging class, marking and documentation. Third, where the case itself serves as the transport packaging for the battery, it may need the appropriate packaging class and marking. Fourth, the most effective commercial arrangement is to place battery compliance clearly on the battery supplier and require the UN 38.3 test summary, leaving the case manufacturer responsible only for structural fit and label coordination. If the customer supplies the battery, state that division of responsibility in the contract.

Q: The importer wants us to sign an indemnity clause for California Proposition 65. Should we accept it?

A: Assess it carefully rather than accepting or refusing outright. The legal duty under Proposition 65 falls on the business selling into California, usually the importer or retailer, but a contract can pass that exposure upstream. A reasonable approach has five parts. First, ask the other side to define the claim scope: direct losses from a substance exceedance only, or also the plaintiff's attorney fees and punitive damages. Second, tie liability to a precondition, typically the accuracy of the material test reports and formulations you supply, so that you are responsible only where your materials or processes caused the exceedance. Third, set a liability cap, commonly the value of the affected batch or the total contract value, to avoid unlimited exposure. Fourth, require the other party to notify you promptly on receiving a 60-day notice and to give you an opportunity to participate in the defence or remediation, rather than settling unilaterally and seeking full recovery from you. Fifth, put a matching recourse clause in your contract with your material suppliers, pushing the obligation further upstream. If the other side insists on unlimited liability, take legal advice before signing, because the potential exposure can far exceed the order value.

Conclusion and Related Reading

US compliance for protective cases compresses into three statements. At the federal level, assess by feature, with FCC applicability as the main question. At the state level, assess by destination, with the Proposition 65 warning duty as the main question. At the commercial level, assess by contract, with third-party reports and platform admission as the main question. Unlike the EU gate model, the US operates as a chain of liability: getting in does not mean you are safe, and the real moat is being able to produce evidence and to label correctly. Assemble the FCC grant documents, the SDoC declaration, material test reports, Proposition 65 wording and contractual commitments into a compliance pack archived by model. It will let you answer customer questions quickly and, when a dispute arises, define the responsibility boundary clearly.

Related Reading

• Understanding UL 94 Flame Retardant Ratings: V-0 versus V-2
• What Certifications Do Protective Cases Need for the EU? CE and RoHS
• Export Packaging Compliance for Protective Cases
• UV Ageing Testing for Protective Cases: Xenon-Arc and Outdoor Exposure