EFR32MG24A020F1536IM48-B

EFR32MG24A020F1536IM48-B is the complete tray order code from the Silicon Labs EFR32MG24 Series 2 wireless SoC family: the base code follows the family ordering key, and the ordering table carries the trailing -B device revision designator as part of the orderable code, while the tape-and-reel variant adds R to give EFR32MG24A020F1536IM48-BR (data sheet Rev. 1.2, chapter 2, ordering information). The configuration is Secure Vault Mid security, the 19.5 dBm power-amplifier feature set, 1536 KB flash and 192 KB RAM, industrial temperature grade (-40 to +125 C) and a QFN-48 package (6 x 6 mm). The device is a 2.4 GHz multiprotocol SoC with a 78 MHz Arm Cortex-M33 supporting Zigbee, OpenThread, Bluetooth LE, Bluetooth mesh and Matter, running from a single 1.71 V to 3.8 V supply; Silicon Labs includes this order code in its product longevity program with availability expected until at least April 2032 - that date is the manufacturer expectation under the program terms, not an unconditional production guarantee. Selection advice: the MG24 ordering code is compositional - security grade (A Mid versus B High), transmit power (10 dBm versus 19.5 dBm), flash size, temperature grade and package (QFN-40 or QFN-48) each change characters in the code - so quote the complete code including the -B revision designator rather than the family name, and name the -BR code explicitly when you need tape-and-reel packing.