EFR32FG23 Flex Gecko Wireless SoCs

Silicon Labs EFR32FG23 Flex Gecko Wireless SoCs (System-on-a-Chip) are ideal for sub-GHz Internet of Things (IoT) wireless connectivity for smart home, security, lighting, building automation, and metering. The EFR32FG23 are high-performance sub-GHz radios that provide long-range and are not susceptible to 2.4GHz interference from technologies. The single die, multi-core solution provides industry-leading security and low power consumption with fast wakeup times. An integrated power amplifier enables the next generation of secure connectivity for IoT devices. The EFR32FG23L variants are low-power. Silicon Labs EFR32FG23 Flex Gecko Wireless SoCs are available in 40-pin and 48-pin Quad Flat No-Lead (QFN) packages with a wide -40°C to +125°C operating temperature range.

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Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, XOUT, QFN40
Datasheet
7 845In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 22 I/O - 40 C + 85 C Reel, Cut Tape
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, Secure Vault-High, +125C, QFN48
Datasheet
2 904In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 31 I/O - 40 C + 125 C Reel, Cut Tape
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +20 dBm, QFN48
Datasheet
2 384In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 32 bit 78 MHz 256 kB 32 kB 12 bit, 16 bit 31 I/O - 40 C + 85 C Reel, Cut Tape

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, Secure Vault-High, +125C, QFN40
Datasheet
1 720In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 23 I/O - 40 C + 125 C Reel, Cut Tape, MouseReel

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +20 dBm, QFN40
Datasheet
3 903In Stock
MouseReel Available
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 256 kB 32 kB 12 bit, 16 bit 23 I/O - 40 C + 85 C Reel, Cut Tape, MouseReel
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +14 dBm, QFN48
Datasheet
1 113In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 32 bit 78 MHz 256 kB 32 kB 12 bit, 16 bit 31 I/O - 40 C + 85 C Reel, Cut Tape
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +20 dBm, QFN40
Datasheet
561In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 256 kB - 40 C + 85 C Tray

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +20 dBm, XOUT, QFN40
Datasheet
2 410In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 22 I/O - 40 C + 85 C Reel, Cut Tape

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 128kB Flash, 32kB RAM, +14 dBm, Secure Vault-High, QFN40
Datasheet
1 820In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 128 kB 32 kB 12 bit, 16 bit 23 I/O - 40 C + 85 C Reel, Cut Tape
Silicon Labs 32-bit Microcontrollers - MCU FG23L, 128kB Flash, 32kB RAM, +14 dBm, QFN40, -40 to +85 C
Datasheet
2 214In Stock
Min.: 1
Mult.: 1

32-bit Microcontrollers - MCU SMD/SMT QFN-40 128 kB 32 kB - 40 C + 85 C Tray
Silicon Labs 32-bit Microcontrollers - MCU FG23L, 128kB Flash, 32kB RAM, +20 dBm, QFN40, -40 to +85 C
Datasheet
2 391In Stock
Min.: 1
Mult.: 1

32-bit Microcontrollers - MCU SMD/SMT QFN-40 128 kB 32 kB - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +20 dBm, XOUT, QFN40
Datasheet
3 017In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 512 kB - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +20 dBm, QFN48
Datasheet
2 672In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 512 kB - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +20 dBm, QFN48
Datasheet
321In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 256 kB - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, QFN48
Datasheet
6 550In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 31 I/O - 40 C + 85 C Reel, Cut Tape
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, QFN48
Datasheet
2 435In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 31 I/O - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, QFN48
Datasheet
3 565In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 512 kB - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 128kB Flash, 32kB RAM, +14 dBm, Secure Vault-High, QFN40
Datasheet
120In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 128 kB - 40 C + 85 C Tray
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, Secure Vault-High, +125C, QFN48
Datasheet
49In Stock
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 512 kB - 40 C + 125 C Reel, Cut Tape
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +14 dBm, QFN40
Datasheet
24In Stock
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 256 kB - 40 C + 85 C Tray

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +14 dBm, QFN40
Datasheet
2 500Expected 8/13/2026
Min.: 1
Mult.: 1
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 256 kB 32 kB 12 bit, 16 bit 23 I/O - 40 C + 85 C Reel, Cut Tape
Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 256kB Flash, 32kB RAM, +14 dBm, QFN48
Datasheet
1 337Expected 10/23/2026
Min.: 1
Mult.: 1

RF System on a Chip - SoC SMD/SMT QFN-48 ARM Cortex M33 32 bit 78 MHz 256 kB 32 kB 12 bit, 16 bit 31 I/O - 40 C + 85 C Tray

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 128kB Flash, 32kB RAM, +14 dBm, Secure Vault-High, QFN40
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2 450
Mult.: 2 450

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 128 kB 32 kB 12 bit, 16 bit 23 I/O - 40 C + 85 C Tray

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, QFN40
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2 500
Mult.: 2 500
: 2 500

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 23 I/O - 40 C + 85 C Reel

Silicon Labs RF System on a Chip - SoC FG23, Sub-GHz, 512kB Flash, 64kB RAM, +14 dBm, Secure Vault-High, +125C, QFN40
Datasheet
Non-Stocked Lead-Time 12 Weeks
Min.: 2 450
Mult.: 2 450

RF System on a Chip - SoC SMD/SMT QFN-40 ARM Cortex M33 32 bit 78 MHz 512 kB 64 kB 12 bit, 16 bit 23 I/O - 40 C + 125 C Tray