TELEC/MIC Type Approval: Japan Radio Law Certification

Japan’s Radio Law (電波法, Denpahou) prohibits the operation of radio frequency transmitters in Japan unless they hold type approval from the Ministry of Internal Affairs and Communications (MIC). For consumer electronics manufacturers exporting to Japan — including WiFi routers, Bluetooth devices, LoRa sensors, and smart home products — this is a hard legal requirement with no import exemptions. Unlike CE or FCC, Japan does not recognize foreign certifications or equivalent testing arrangements: you need Japanese type approval.

Overview

The Radio Law (Act No. 131 of 1950, with amendments) is the primary legislation. Article 2 defines radio equipment; Article 38-2 prohibits manufacturing or importing radio equipment without compliance with technical standards; Articles 38-24 through 38-31 establish the type approval (技術基準適合証明, gijutsu kijun tekigoushyoumeisho) system.

TELEC (Telecom Engineering Center, 一般財団法人テレコムエンジニアリングセンター) is the most widely used designated testing institution under MIC. Other MIC-designated bodies include:

• MKK (Musen Sekinin Tsuuchi Kikan, 一般社団法人無線設備技術基準認証機関)
• VCCI (Voluntary Control Council for Interference — handles EMC, not radio type approval)
• UL Japan — also MIC-designated for certain categories

The certification mark placed on approved products is the 技術基準適合証明マーク (Technical Conformity Mark) — a specific registered symbol with the approval number. This mark, or the approval number, must appear in the product documentation and packaging.

Applicability

Type approval is required for all intentional radiators operated in Japan, including:

• 2.4 GHz WiFi (802.11b/g/n/ac/ax)
• Bluetooth Classic and BLE
• 920 MHz band devices (LoRa, Wi-SUN, SIGFOX, Zigbee sub-GHz)
• 5 GHz WiFi (802.11a/n/ac/ax) — UNII bands
• Cellular modules (LTE, 5G)
• GNSS receivers with RF output

Frequency allocation in Japan differs from ITU Region 1 (Europe) and ITU Region 2 (Americas) in specific bands. The 920 MHz band is Japan-specific for IoT (779–928 MHz is used for RFID; 920.5–928.0 MHz for low-power data). Products using US 915 MHz LoRa modules typically require a Japan-specific module variant.

Not requiring type approval: Passive electronic equipment (no intentional RF transmitter), wired devices, optical fiber equipment.

Key Requirements

Applicable ARIB (Association of Radio Industries and Businesses) standards:

Technical parameters tested include: transmit power (EIRP), occupied bandwidth, spurious emission, adjacent channel leakage ratio (ACLR), and — for spread-spectrum systems — frequency hopping or spread spectrum parameters per ARIB standards.

Process & Timeline

Step 1: Determine if module-level pre-approval applies. If you are using a module that already holds Japan type approval — many ESP32-based IoT modules, Nordic nRF52840-based modules, u-blox modules, Sierra Wireless modules — the module’s approval may cover the host device’s radio without additional radio testing. Conditions: the module must be used per its approval scope (antenna, power configuration), and the host device may need only EMC (VCCI) testing.

Step 2: Select a designated testing institution. TELEC is the most commonly used. For 920 MHz LoRa: confirm the lab’s experience with ARIB STD-T108 testing. Arrange pre-consultation — Japanese certification bodies expect detailed pre-engagement before formal application.

Step 3: Prepare application documentation. Required:

• Application form (Japanese language)
• Technical description of the product
• Block diagram of RF circuitry
• Antenna specifications
• User manual (Japanese or bilingual)
• Measurement setup description

Japanese documentation requirements often require working with a local agent or the testing body’s administrative team. Most foreign applicants engage a Japan-based agent (代理人) who manages documentation and regulatory correspondence.

Step 4: Submit samples and documentation. Lab schedules typically require 2–3 weeks lead time after documentation acceptance.

Step 5: Receive Certificate of Technical Conformity. The approval number is registered with MIC and is permanent — no renewal required, provided the product hardware does not change.

Timeline: 8–16 weeks from application submission to certificate. Testing itself: 2–4 weeks. Documentation preparation and administrative back-and-forth: 4–8 weeks. Allow 16 weeks for projects without prior Japan regulatory experience.

Cost: ¥200,000–600,000 ($1,300–4,000 USD) for a standard WiFi/BT module or product. Multi-radio products (WiFi + BLE + 920 MHz): ¥600,000–1,200,000 ($4,000–8,000). Agent fees if using an intermediary: ¥50,000–150,000 additional.

Annual renewal: not required. Japan type approval is permanent for the specific hardware configuration. This is different from some other jurisdictions.

Getting It Done from China

Chinese manufacturers exporting to Japan typically work with one of three approaches:

1. Pre-certified modules. Source WiFi/BT modules that already have Japan type approval — for example an ESP32 WiFi + BLE module carrying an existing MIC approval number. Module manufacturers publish their approval numbers; verify in the MIC database (総務省 電波利用ホームページ). This eliminates radio testing for the host device.

2. Testing at Japanese labs’ China offices. TELEC does not have China offices, but some MIC-designated labs (including UL Japan affiliates and SGS Japan) can facilitate testing coordination. The actual testing may still need to be completed in Japan.

3. Japan-based agent. Many Chinese electronics exporters use a Japan-based regulatory agent (typically a trading company or compliance consulting firm based in Tokyo or Osaka) to manage the TELEC application process. Cost: ¥100,000–300,000 all-in for agent services, plus testing fees.

For 920 MHz products (LoRa gateways, sensors for the Japanese smart meter and agriculture IoT market): verify early that your hardware supports the Japan 920 MHz band. LoRa chips (SX1276, SX1262) support multiple regions, but firmware must be configured for Japan LoRaWAN AS923 plan, and the module may need physical RF filtering changes.

Common Mistakes

Pre-shipment inspection for Japan-bound shipments should include verification of the Technical Conformity Mark and approval number on each unit and packaging.

1. Assuming CE or FCC testing covers Japan. There is no mutual recognition agreement between Japan and the EU or US for radio equipment. CE test reports and FCC grants are not accepted by TELEC or MIC. A product with FCC and CE can legally be sold in the US and EU but cannot be legally operated in Japan without Japanese type approval. If you are launching across several markets at once, plan the test campaigns together using a multi-market certification strategy rather than treating Japan as an afterthought.

2. Hardware revision invalidating certification. Japan type approval applies to the specific hardware configuration submitted. A PCB revision — even a minor one affecting RF layout — may constitute a change that requires notification to MIC or new testing. Establish a change control process that includes Japan regulatory impact assessment before any hardware change.

3. Wrong frequency band for 920 MHz products. Products using US-market 915 MHz LoRa modules (which transmit in the 902–928 MHz range with different channel plans) are not compliant with Japan’s 920.5–928.0 MHz allocation and ARIB STD-T108 requirements. This must be designed in before hardware freeze, not addressed at certification time.

Related Resources

• FCC Certification — US equivalent, often run in parallel
• CE Marking for Electronics — EU equivalent
• Quality Inspection Services
• IoT Modules & Components Sourcing
• Consumer Electronics Sourcing
• JP Distributor LoRa Gateway Case Study
• How to Source Electronics from China