RafaelMicro holds a single IEEE MA-L block, OUI prefix A0:44:F3, registered to "RafaelMicro" at an address in ChuBei (Zhubei) City, HsinChu County, Taiwan. The registrant is Rafael Microelectronics, Inc., a fabless RFIC (Radio Frequency Integrated Circuit) semiconductor company founded in 2006 and headquartered in Hsinchu County, Taiwan. The company is best known as a dominant supplier of TV receiver tuner chips — it claims more than 30% of the worldwide TV receiver market — covering DVB-T/T2/C/S2 set-top boxes, satellite (LNB), and optical communication. Its more recent IoT-connectivity line, the RT5xx SoC family, supports Bluetooth Low Energy 5.x, Zigbee 3.0, Thread 1.3, and Matter 1.0; the RT58X SoC is a CSA-certified Matter shipset. Devices presenting MAC prefix A0:44:F3 are therefore most likely embedded wireless modules or smart-home endpoints (smart bulbs, wall switches, sensors) built on the RT568/RT582/RT58X platform, rather than the company's TV-tuner ICs (which are typically RF front-ends without their own assigned MAC). Note the usual OUI caveat: IEEE publishes no registration date for MAC/OUI assignments, so any "date registered" (e.g. the 2022-05-21 shown by third-party lookup tools) is a database scrape artifact, not an IEEE fact.
- IEEE assignment
- A0:44:F3 → RafaelMicro (MA-L) [Confirmed] — IEEE MA-L (enrichment/registries/oui.csv line 517), maclookup.app/vendors/rafaelmicro
- Registry / block size
- MA-L (24-bit OUI); single block, no MA-M or MA-S entries found [Confirmed] — IEEE MA-L; absent from mam.csv (MA-M) and oui36.csv (MA-S)
- Registrant org name
- RafaelMicro = Rafael Microelectronics, Inc. [Confirmed] — IEEE MA-L; rafaelmicro.com
- HQ / registry address
- 8F., No.28, Chenggong 12th St., ChuBei (Zhubei) City, HsinChu County, TW 30264 [Confirmed] — IEEE MA-L
- Country
- TW (Taiwan) [Confirmed] — IEEE MA-L; rafaelmicro.com/contact-us
- No IEEE registration date
- IEEE publishes NO assignment/registration date for OUI/MAC blocks. maclookup.app shows 2022-05-21 — this is a third-party database artifact, NOT an IEEE fact, and must not be surfaced as a registration date. [Confirmed] — IEEE OUI data schema; maclookup.app (artifact)
- Company status / type
- active; fabless RFIC semiconductor company [Confirmed] — rafaelmicro.com
- Company founded
- 2006 (sources give 2006-11-25) [Confirmed] — Bloomberg profile 6568:TT; tracxn.com (consistent across sources)
- Public listing
- Taiwan OTC / Taipei Exchange (TPEX), ticker 6568 [Likely] — in.tradingview.com/symbols/TPEX-6568 (single market-data source)
- Device types
- IoT SoCs / companion RF ICs in smart-home devices (smart bulbs, wall switches, sensors), smart-grid endpoints, wearables; plus TV receivers, set-top boxes, satellite (LNB) and optical networking ICs [Confirmed] — rafaelmicro.com/rf-connectivity, csa-iot.org/csa_product/rt58x
- Notable products
- RT568 (BLE 5.0), RT582 (2.4GHz dual-protocol Matter/Zigbee SoC), RT58X (Matter/Thread/Zigbee SoC); DVB tuner ICs [Confirmed] — rafaelmicro.com product announcements; csa-iot.org/csa_product/rt58x
- Wireless protocols
- Bluetooth 5.0/5.1/5.2/5.4 LE, Zigbee 3.0, Thread 1.3, Matter 1.0, IEEE 802.15.4, Sub-GHz; plus DVB-T/T2/C/S2 tuner ICs [Confirmed] — rafaelmicro.com/rf-connectivity; csa-iot.org/csa_product/rt58x
- Matter certification
- RT58X is Matter 1.0 certified (Cert ID CSA23766MAT41279-24, Vendor ID 0x1346, certified 2023-06-30, Granite River Labs) [Confirmed] — csa-iot.org/csa_product/rt58x; graniteriverlabs.com
- Security context
- RT5xx IoT SoCs advertise hardware TrustZone, PUF (Physical Unclonable Function) and AES; Matter/Thread stack carries those specs' security (AES-CCM, PASE/CASE, commissioning PIN). No CVEs specific to Rafael Micro products found in NVD as of 2026-06-19. General smart-home IoT attack surface (firmware update path, Matter commissioning, BLE pairing window) applies. [Confirmed] — rafaelmicro.com/rf-connectivity; nvd.nist.gov (no Rafael-specific CVE found)
- Analyst note
- A0:44:F3 on a globally-administered address identifies genuine Rafael Micro silicon — most plausibly an RT58X/RT582-based IoT/smart-home module. As with all OUIs, absence of the prefix does not prove "not Rafael," and BLE devices may use randomized addresses.