8-bit Microcontrollers - MCU – Mouser Hong Kong

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EFM8™ Sleepy Bee 8-bit MCUs

Silicon Labs EFM8™ Sleepy Bee Family of MCUs are energy-friendly 8-bit microcontrollers with comprehensive features in small packages. They have low power consumption by combining innovative low energy techniques and short wake-up times from energy-saving modes. The Silicon Labs EFM8 are well suited for any battery-operated applications.

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Image	Part #	Mfr.	Description	Datasheet	Availability	Pricing (HKD) Filter the results in the table by unit price based on your quantity.	Qty.	Core	Program Memory Size	Data RAM Size	Package/Case	Maximum Clock Frequency	ADC Resolution	Number of I/Os	Supply Voltage - Min	Supply Voltage - Max	Mounting Style	Data Bus Width	Minimum Operating Temperature	Maximum Operating Temperature	Series	Qualification	Packaging
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN24 Silicon Labs 1: HK$23.34 2,654In Stock	Mfr. Part No. EFM8SB20F64G-B-QFN24 Mouser Part No 634-EFM8SBF64GBQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	2,654In Stock	HK$23.34 HK$17.67 HK$16.11 HK$14.47 View HK$13.65 HK$13.40 HK$12.74 HK$12.33 HK$12.08	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.25 kB	QFN-24	25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8A-A-QFN24 Silicon Labs 1: HK$27.87 1,519In Stock	Mfr. Part No. EFM8SB10F8A-A-QFN24 Mouser Part No 634-FM8SB10F8AAQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,519In Stock	HK$27.87 HK$20.80 HK$18.99 HK$17.02 View HK$16.11 HK$15.78 HK$14.55 HK$14.47 HK$14.14	Min.: 1 Mult.: 1	CIP-51 8051	8 kB	512 B		25 MHz	12 bit	17 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB	AEC-Q100	Tube
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F32G-B-QFN24R Silicon Labs 1: HK$29.84 865In Stock	Mfr. Part No. EFM8SB20F32G-B-QFN24R Mouser Part No 634-EFM8SB32GBQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	865In Stock	Cut Tape HK$29.84 HK$21.78 HK$19.40 HK$17.02 Reel HK$10.52 View HK$14.63 HK$11.01 HK$10.36	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	32 kB	4.25 kB	QFN-24	25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN24R Silicon Labs 1: HK$23.67 1,500In Stock	Mfr. Part No. EFM8SB20F64G-B-QFN24R Mouser Part No 634-EFM8SB64GBQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,500In Stock	Cut Tape HK$23.67 HK$17.67 HK$16.11 HK$14.47 Reel HK$12.25 View HK$13.65 HK$13.40 HK$12.58 HK$12.00 MouseReel Available	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	64 kB	4.25 kB		25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8A-A-QFN20R Silicon Labs 1: HK$26.80 1,221In Stock End of Life	Mfr. Part No. EFM8SB10F8A-A-QFN20R Mouser Part No 634-M8SB10F8AAQFN20R End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,221In Stock	Cut Tape HK$26.80 HK$19.97 HK$18.25 HK$16.36 Reel HK$13.89 View HK$15.45 HK$15.12 HK$13.97 HK$13.56	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	8 kB	512 B	QFN-20	25 MHz	12 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB	AEC-Q100	Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN32 Silicon Labs 1: HK$36.99 1,111In Stock End of Life	Mfr. Part No. EFM8SB20F64G-B-QFN32 Mouser Part No 634-EFM8SBF64GBQFN32 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,111In Stock	HK$36.99 HK$24.50 HK$20.71 HK$18.99 View HK$18.08 HK$16.19 HK$15.95 HK$14.55 HK$14.47	Min.: 1 Mult.: 1	CIP-51 8051	64 kB	4.25 kB	QFN-32	25 MHz	10 bit	24 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F32G-B-QFN32R Silicon Labs 1: HK$21.04 81In Stock End of Life	Mfr. Part No. EFM8SB20F32G-B-QFN32R Mouser Part No 634-EFM8SB32GBQFN32R End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	81In Stock	Cut Tape HK$21.04 HK$18.91 HK$14.71 HK$13.89 Reel HK$11.51 View HK$13.40 HK$11.67 HK$11.34	Min.: 1 Mult.: 1 : 1,500	CIP-51 8051	32 kB	4.25 kB		25 MHz	10 bit	24 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F32G-B-QFN32 Silicon Labs 1: HK$22.28 Non-Stocked Lead-Time 20 Weeks End of Life	Mfr. Part No. EFM8SB20F32G-B-QFN32 Mouser Part No 634-EFM8SBF32GBQFN32 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	Non-Stocked Lead-Time 20 Weeks	HK$22.28 HK$16.85 HK$14.55 HK$13.40 View HK$12.66 HK$12.58 HK$12.17	Min.: 1 Mult.: 1	CIP-51 8051	32 kB	4.25 kB	QFN-32	25 MHz	10 bit	24 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F16G-B-QFN24 Silicon Labs 1: HK$17.51 1,911Expected 13/11/2026	Mfr. Part No. EFM8SB20F16G-B-QFN24 Mouser Part No 634-EFM8SBF16GBQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	1,911Expected 13/11/2026	HK$17.51 HK$13.40 HK$11.92 HK$11.01 View HK$10.44 HK$10.19 HK$9.95 HK$9.70	Min.: 1 Mult.: 1	CIP-51 8051	16 kB	4.25 kB	QFN-24	25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F16G-B-QFN24R Silicon Labs 1,500: HK$9.45 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. EFM8SB20F16G-B-QFN24R Mouser Part No 634-EFM8SB16GBQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel HK$9.45 HK$9.29	Min.: 1,500 Mult.: 1,500 : 1,500	CIP-51 8051	16 kB	4.25 kB		25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Reel
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F32G-B-QFN24 Silicon Labs 1: HK$18.74 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. EFM8SB20F32G-B-QFN24 Mouser Part No 634-EFM8SBF32GBQFN24	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	Non-Stocked Lead-Time 12 Weeks	HK$18.74 HK$14.96 HK$13.56 HK$12.17 View HK$11.92 HK$11.18 HK$10.85 HK$10.52 HK$10.28	Min.: 1 Mult.: 1	CIP-51 8051	32 kB	4.25 kB	QFN-24	25 MHz	10 bit	16 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB		Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8A-A-QFN24R Silicon Labs 1,500: HK$15.37 Non-Stocked Lead-Time 12 Weeks	Mfr. Part No. EFM8SB10F8A-A-QFN24R Mouser Part No 634-M8SB10F8AAQFN24R	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	Non-Stocked Lead-Time 12 Weeks	Reel HK$15.37 HK$15.21	Min.: 1,500 Mult.: 1,500 : 1,500	CIP-51 8051	8 kB	512 B	QFN-24	25 MHz	12 bit	17 I/O	1.8 V	3.6 V	SMD/SMT	8 bit	- 40 C	+ 85 C	EFM8SB	AEC-Q100	Reel
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU EFM8SB20F64G-B-QFN32R Silicon Labs 1: HK$26.06 Non-Stocked Lead-Time 20 Weeks End of Life	Mfr. Part No. EFM8SB20F64G-B-QFN32R Mouser Part No 634-EFM8SB64GBQFN32R End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	Non-Stocked Lead-Time 20 Weeks	Cut Tape HK$26.06 HK$19.48 HK$17.84 HK$15.95 HK$15.86 Reel HK$15.78	Min.: 1 Mult.: 1 : 1,500														EFM8SB		Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU EFM8SB10F8A-A-QFN20 Silicon Labs 1: HK$27.21 Non-Stocked Lead-Time 20 Weeks End of Life	Mfr. Part No. EFM8SB10F8A-A-QFN20 Mouser Part No 634-FM8SB10F8AAQFN20 End of Life	Silicon Labs	8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU Learn More about Silicon Labs silabs efm8 sleepy bee	Datasheet	Non-Stocked Lead-Time 20 Weeks	HK$27.21 HK$21.45 HK$20.47 HK$19.40 View HK$18.91 HK$18.74 HK$17.59 HK$17.26 HK$17.18	Min.: 1 Mult.: 1														EFM8SB	AEC-Q100	Tube

EFM8™ Sleepy Bee 8-bit MCUs

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