8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
EFM8SB10F8G-A-QFN24R
Silicon Labs
1:
HK$14.80
3,031 In Stock
Mouser Part No 634-8SB10F8GAQF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
3,031 In Stock
Alternative Packaging
1
HK$14.80
10
HK$12.33
25
HK$10.60
100
HK$10.03
1,500
HK$7.32
3,000
View
250
HK$9.86
500
HK$8.80
1,000
HK$7.80
3,000
HK$7.15
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
Development Boards & Kits - 8051 EFM8BB3 Busy Bee Starter Kit
SLSTK2022A
Silicon Labs
1:
HK$879.54
12 In Stock
Mouser Part No 634-SLSTK2022A
Silicon Labs
Development Boards & Kits - 8051 EFM8BB3 Busy Bee Starter Kit
12 In Stock
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
AT89S2051-24SU
Microchip Technology
1:
HK$21.45
504 In Stock
Mouser Part No 556-A89S2051-24SU
Microchip Technology
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
504 In Stock
1
HK$21.45
25
HK$19.65
111
HK$17.92
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
EFM8UB10F16G-C-QFN28R
Silicon Labs
1:
HK$22.28
4,493 In Stock
Mouser Part No 634-8UB10F16GCQFN28R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 2 kB RAM 8-bit Universal Bee MCU
4,493 In Stock
Alternative Packaging
1
HK$22.28
10
HK$18.74
25
HK$16.44
100
HK$15.54
1,500
HK$10.69
3,000
View
250
HK$15.29
500
HK$13.56
1,000
HK$11.92
3,000
HK$10.36
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU
+2 images
EFM8UB10F8G-C-QFN20
Silicon Labs
1:
HK$14.63
2,547 In Stock
5,040 Expected 11/9/2026
Mouser Part No 634-8UB10F8GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 2 kB RAM 8-bit Universal Bee MCU
2,547 In Stock
5,040 Expected 11/9/2026
Alternative Packaging
1
HK$14.63
10
HK$12.41
25
HK$10.85
100
HK$10.11
250
View
250
HK$9.86
500
HK$8.71
1,000
HK$8.07
2,520
HK$7.79
5,040
HK$7.68
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F8G-A-CSP16R
Silicon Labs
1:
HK$16.11
2,678 In Stock
7,500 Expected 7/12/2026
Mouser Part No 634-8SB10F8GA-CSP16R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
2,678 In Stock
7,500 Expected 7/12/2026
Alternative Packaging
1
HK$16.11
10
HK$13.32
25
HK$11.51
100
HK$10.85
2,500
HK$8.22
5,000
View
500
HK$9.54
1,000
HK$8.96
5,000
HK$8.14
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
Development Boards & Kits - 8051 MCU University Kit includes Toolstick University Starter Kit and Textbook
MCUNIVERSITYKIT
Silicon Labs
1:
HK$637.21
N/A
Mouser Part No 634-MCUNIVERSITYKIT
Silicon Labs
Development Boards & Kits - 8051 MCU University Kit includes Toolstick University Starter Kit and Textbook
N/A
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F32E-C-QFN24R
Silicon Labs
1:
HK$33.54
980 In Stock
Mouser Part No 634-LB12F32ECQFN24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
980 In Stock
Alternative Packaging
1
HK$33.54
10
HK$22.19
25
HK$20.22
100
HK$17.18
1,500
HK$13.07
3,000
View
250
HK$16.36
500
HK$14.63
1,000
HK$13.73
3,000
HK$12.91
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64G-D-QFN24R
Silicon Labs
1:
HK$30.17
2,120 In Stock
Mouser Part No 634-EF8BB31F64GDF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
2,120 In Stock
Alternative Packaging
1
HK$30.17
10
HK$20.39
25
HK$18.91
100
HK$16.44
1,500
HK$12.74
3,000
View
250
HK$15.37
500
HK$13.48
1,000
HK$12.74
3,000
HK$10.85
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16G-D-QFN32R
Silicon Labs
1:
HK$15.29
4,177 In Stock
Mouser Part No 634-EF8BB31F16GDN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
4,177 In Stock
Alternative Packaging
1
HK$15.29
10
HK$12.66
25
HK$10.93
100
HK$10.28
2,500
HK$7.77
5,000
View
500
HK$9.04
1,000
HK$8.47
5,000
HK$7.56
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN24R
Silicon Labs
1:
HK$28.44
4,089 In Stock
Mouser Part No 634-LB12F64ECQFN24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
4,089 In Stock
Alternative Packaging
1
HK$28.44
10
HK$23.26
25
HK$20.14
100
HK$19.07
1,500
HK$15.04
3,000
View
500
HK$16.93
1,000
HK$15.37
3,000
HK$14.88
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
Development Boards & Kits - 8051 EFM8UB20 Universal Bee Starter Kit
SLSTK2001A
Silicon Labs
1:
HK$937.08
5 In Stock
End of Life
Mouser Part No 634-SLSTK2001A
End of Life
Silicon Labs
Development Boards & Kits - 8051 EFM8UB20 Universal Bee Starter Kit
5 In Stock
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64I-D-4QFN24R
Silicon Labs
1:
HK$33.13
995 In Stock
1,500 Expected 30/11/2026
Mouser Part No 634-EF8BB31F64ID424R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
995 In Stock
1,500 Expected 30/11/2026
Alternative Packaging
1
HK$33.13
10
HK$21.95
25
HK$19.97
100
HK$16.93
1,500
HK$12.49
3,000
View
250
HK$16.11
500
HK$14.47
1,000
HK$12.58
3,000
HK$12.25
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F64G-D-QFN24
Silicon Labs
1:
HK$20.80
5,987 In Stock
Mouser Part No 634-EF8BB31F64GDQF24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
5,987 In Stock
Alternative Packaging
1
HK$20.80
10
HK$17.51
25
HK$15.29
100
HK$14.30
500
View
500
HK$12.82
1,000
HK$11.92
2,520
HK$11.01
5,040
HK$10.60
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16G-C-QFN28R
Silicon Labs
1:
HK$20.71
2,666 In Stock
Mouser Part No 634-8BB22F16GCQFN28R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
2,666 In Stock
Alternative Packaging
1
HK$20.71
10
HK$16.03
25
HK$14.55
100
HK$12.33
1,500
HK$10.28
3,000
View
500
HK$11.01
1,000
HK$10.28
3,000
HK$8.63
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN32
Silicon Labs
1:
HK$29.76
2,603 In Stock
Mouser Part No 634-LB12F64ECQFN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
2,603 In Stock
Alternative Packaging
1
HK$29.76
10
HK$24.91
25
HK$21.87
100
HK$20.71
250
View
250
HK$18.66
500
HK$17.92
1,000
HK$16.52
2,450
HK$16.19
4,900
HK$16.03
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
CY8C3445PVI-094
Infineon Technologies
1:
HK$101.43
134 In Stock
Mouser Part No 727-CY8C3445PVI-094
Infineon Technologies
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
134 In Stock
Alternative Packaging
1
HK$101.43
10
HK$90.58
25
HK$70.03
100
HK$69.21
250
View
250
HK$66.50
600
HK$60.83
1,200
HK$59.18
3,000
Quote
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN32R
Silicon Labs
1:
HK$29.43
4,062 In Stock
Mouser Part No 634-LB12F64ECQFN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
4,062 In Stock
Alternative Packaging
1
HK$29.43
10
HK$24.08
25
HK$20.88
100
HK$19.73
2,500
HK$14.88
5,000
View
500
HK$17.51
1,000
HK$15.45
5,000
HK$14.63
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
+1 image
EFM8LB12F64E-C-QFP32
Silicon Labs
1:
HK$31.48
4,790 In Stock
6,250 Expected 12/3/2027
Mouser Part No 634-LB12F64ECQFP32
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
4,790 In Stock
6,250 Expected 12/3/2027
Alternative Packaging
1
HK$31.48
10
HK$26.30
25
HK$23.10
100
HK$21.95
250
View
250
HK$20.55
500
HK$19.73
1,000
HK$18.50
2,500
HK$18.08
5,000
HK$17.92
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
EFM8SB10F8G-A-CSP16
Silicon Labs
1:
HK$15.29
1,669 In Stock
Mouser Part No 634-8SB10F8G-A-CSP16
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
1,669 In Stock
Alternative Packaging
1
HK$15.29
10
HK$12.91
25
HK$11.34
100
HK$10.19
200
View
200
HK$10.11
600
HK$9.70
1,000
HK$8.38
2,600
HK$7.90
5,000
HK$7.73
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F32I-D-4QFN24R
Silicon Labs
1:
HK$27.37
1,520 In Stock
Mouser Part No 634-EF8BB31F32ID424R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,520 In Stock
Alternative Packaging
1
HK$27.37
10
HK$18.00
25
HK$16.60
100
HK$14.47
1,500
HK$11.18
3,000
View
250
HK$13.56
500
HK$11.84
1,000
HK$11.18
3,000
HK$9.62
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64I-D-QFN32
Silicon Labs
1:
HK$35.76
1,529 In Stock
Mouser Part No 634-EF8BB31F64IDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
1,529 In Stock
Alternative Packaging
1
HK$35.76
10
HK$23.67
25
HK$21.54
100
HK$18.33
250
View
250
HK$17.43
500
HK$15.62
1,000
HK$13.56
4,900
HK$13.40
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
AT89C4051-24SU
Microchip Technology
1:
HK$12.25
695 In Stock
Mouser Part No 556-A89C4051-24SU
Microchip Technology
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
695 In Stock
1
HK$12.25
111
HK$12.17
1,036
HK$11.01
Buy
Min.: 1 Mult.: 1
Details
8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 85
+5 images
N76E003AT20
Nuvoton
1:
HK$6.82
485 In Stock
888 Expected 20/4/2027
Mouser Part No 503-N76E003AT20
Nuvoton
8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 85
485 In Stock
888 Expected 20/4/2027
1
HK$6.82
10
HK$5.84
25
HK$4.98
74
HK$4.69
518
View
518
HK$4.26
1,036
HK$4.10
2,516
HK$3.90
5,032
HK$3.85
Buy
Min.: 1 Mult.: 1
Details
Development Boards & Kits - 8051 EFM8 BB52 Pro Kit
BB52-PK5206B
Silicon Labs
1:
HK$764.46
5 In Stock
19 On Order
Mouser Part No 634-BB52-PK5206B
Silicon Labs
Development Boards & Kits - 8051 EFM8 BB52 Pro Kit
5 In Stock
19 On Order
View Dates
Stock:
5 Can Dispatch Immediately
On Order:
12 Expected 1/9/2026
7 Expected 21/9/2026
Factory Lead Time:
9 Weeks
Buy
Min.: 1 Mult.: 1
Hong Kong
