8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
CY8C3866AXI-040
Infineon Technologies
1:
$27.58
297 In Stock
Mouser Part No
727-CY8C3866AXI-040
Infineon Technologies
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
297 In Stock
Alternative Packaging
1
$27.58
10
$21.58
25
$20.61
100
$18.43
250
View
250
$17.71
450
$17.19
900
Quote
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
CY8C3866PVI-070
Infineon Technologies
1:
$22.12
237 In Stock
Mouser Part No
727-CY8C3866PVI-070
Infineon Technologies
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
237 In Stock
Alternative Packaging
1
$22.12
10
$20.33
25
$15.73
100
$15.21
250
View
250
$15.19
450
$14.27
900
Quote
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16G-C-QFN20R
Silicon Labs
1:
$1.94
59,467 In Stock
58,500 Expected 08/01/2027
Mouser Part No
634-8BB21F16GCQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
59,467 In Stock
58,500 Expected 08/01/2027
Alternative Packaging
1
$1.94
10
$1.61
25
$1.44
100
$1.19
1,500
$0.956
3,000
View
250
$1.12
500
$1.03
3,000
$0.921
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
+1 image
AT89C4051-24PU
Microchip Technology
1:
$2.12
1,034 In Stock
Mouser Part No
556-A89C4051-24PU
Microchip Technology
8-bit Microcontrollers - MCU 8051 4K FLASH 2.7 TO 5.5V 24MHZ 4V-5.5V
1,034 In Stock
Buy
Min.: 1
Mult.: 1
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8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
CY8C3245LTI-139
Infineon Technologies
1:
$9.64
449 In Stock
Mouser Part No
727-CY8C3245LTI-139
Infineon Technologies
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
449 In Stock
Alternative Packaging
1
$9.64
10
$7.50
25
$6.64
100
$6.37
250
View
250
$6.08
500
$5.91
1,000
$5.57
2,600
Quote
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Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F2G-A-QFN20R
Silicon Labs
1:
$0.91
15,601 In Stock
Mouser Part No
634-8BB10F2GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
15,601 In Stock
Alternative Packaging
1
$0.91
10
$0.762
25
$0.66
100
$0.62
1,500
$0.456
3,000
View
500
$0.54
1,000
$0.498
3,000
$0.417
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
+1 image
CY8C3245LTI-163
Infineon Technologies
1:
$9.75
733 In Stock
Mouser Part No
727-CY8C3245LTI-163
Infineon Technologies
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
733 In Stock
Alternative Packaging
1
$9.75
10
$7.59
25
$6.72
100
$6.45
250
View
250
$6.15
1,000
$5.64
2,600
Quote
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Min.: 1
Mult.: 1
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8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
+1 image
CY8C3666LTI-027
Infineon Technologies
1:
$22.56
147 In Stock
Mouser Part No
727-CY8C3666LTI-027
Infineon Technologies
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
147 In Stock
Alternative Packaging
1
$22.56
10
$18.03
25
$16.22
100
$16.15
260
View
260
$15.04
520
$14.49
1,040
Quote
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F8G-A-SOIC16
Silicon Labs
1:
$1.11
995 In Stock
Mouser Part No
634-M8BB50F8GASOIC16
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
995 In Stock
Alternative Packaging
1
$1.11
10
$0.946
25
$0.83
100
$0.762
250
View
250
$0.709
500
$0.649
1,008
$0.585
2,016
$0.541
5,040
$0.524
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F16I-A-SOIC16
Silicon Labs
1:
$1.24
959 In Stock
Mouser Part No
634-M8BB50F16IASIC16
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
959 In Stock
Alternative Packaging
1
$1.24
10
$1.06
25
$0.924
100
$0.853
250
View
250
$0.793
500
$0.727
1,008
$0.657
2,016
$0.609
5,040
$0.59
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F4I-A-SOIC16
Silicon Labs
1:
$1.01
648 In Stock
Mouser Part No
634-M8BB50F4IASOIC16
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
648 In Stock
Alternative Packaging
1
$1.01
10
$0.864
25
$0.804
100
$0.717
250
View
250
$0.666
500
$0.604
1,008
$0.554
2,016
$0.504
5,040
$0.489
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
EFM8BB50F16G-A-QFN12
Silicon Labs
1:
$1.04
607 In Stock
Mouser Part No
634-M8BB50F16GAQFN12
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
607 In Stock
Alternative Packaging
1
$1.04
10
$0.887
25
$0.779
100
$0.693
200
View
200
$0.671
600
$0.589
1,000
$0.529
2,600
$0.454
5,000
$0.415
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL
AT89LP51-20AU
Microchip Technology
1:
$1.72
130 In Stock
480 Expected 13/11/2026
Mouser Part No
556-AT89LP51-20AU
Microchip Technology
8-bit Microcontrollers - MCU Single Cycle 8051 4K ISP FL
130 In Stock
480 Expected 13/11/2026
1
$1.72
25
$1.56
100
$1.42
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F2G-A-QFN20R
Silicon Labs
1:
$1.36
6,578 In Stock
9,000 Expected 01/09/2026
Mouser Part No
634-8SB10F2GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
6,578 In Stock
9,000 Expected 01/09/2026
Alternative Packaging
1
$1.36
10
$1.14
25
$0.98
100
$0.921
1,500
$0.662
3,000
View
250
$0.912
500
$0.807
1,000
$0.736
3,000
$0.637
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F8G-A-QFN20
Silicon Labs
1:
$1.61
4,233 In Stock
Mouser Part No
634-8SB10F8GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
4,233 In Stock
Alternative Packaging
1
$1.61
10
$1.37
25
$1.20
100
$1.08
500
View
500
$1.01
1,000
$0.878
2,100
$0.816
4,200
$0.798
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16I-C-QFN20R
Silicon Labs
1:
$1.11
12,398 In Stock
Mouser Part No
634-EFM851F16IQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
12,398 In Stock
Alternative Packaging
1
$1.11
10
$0.946
25
$0.83
100
$0.762
2,500
$0.538
5,000
View
250
$0.709
500
$0.649
1,000
$0.594
5,000
$0.456
Buy
Min.: 1
Mult.: 1
Reel :
2,500
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F16G-A-SOIC16
Silicon Labs
1:
$1.20
1,546 In Stock
Mouser Part No
634-M8BB50F16GASIC16
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
1,546 In Stock
Alternative Packaging
1
$1.20
10
$1.03
25
$0.901
100
$0.833
250
View
250
$0.731
500
$0.692
1,008
$0.582
2,016
$0.53
5,040
$0.514
Buy
Min.: 1
Mult.: 1
Details
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F2G-A-QFN20
Silicon Labs
1:
$1.29
3,429 In Stock
6,300 Expected 09/10/2026
Mouser Part No
634-8SB10F2GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
3,429 In Stock
6,300 Expected 09/10/2026
Alternative Packaging
1
$1.29
10
$1.10
25
$0.96
100
$0.859
500
View
500
$0.804
1,000
$0.726
2,100
$0.662
4,200
$0.637
Buy
Min.: 1
Mult.: 1
Details
Development Boards & Kits - 8051 EFM8BB50 Explorer Kit
BB50-EK2702A
Silicon Labs
1:
$30.32
15 In Stock
Mouser Part No
634-BB50-EK2702A
Silicon Labs
Development Boards & Kits - 8051 EFM8BB50 Explorer Kit
15 In Stock
Buy
Min.: 1
Mult.: 1
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8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F16G-A-QFN16R
Silicon Labs
1:
$1.66
1,000 In Stock
Mouser Part No
634-M8BB50F16GAFN16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
1,000 In Stock
Alternative Packaging
1
$1.66
10
$1.06
25
$0.942
100
$0.775
250
View
3,000
$0.469
250
$0.676
500
$0.64
1,000
$0.538
3,000
$0.469
Buy
Min.: 1
Mult.: 1
Reel :
3,000
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F16G-A-QFN16
Silicon Labs
1:
$1.01
973 In Stock
Mouser Part No
634-M8BB50F16GAQFN16
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
973 In Stock
Alternative Packaging
1
$1.01
10
$0.864
25
$0.804
100
$0.788
200
View
200
$0.642
600
$0.623
1,000
$0.553
2,600
$0.504
5,000
$0.489
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-QFN20R
Silicon Labs
1:
$1.70
8,908 In Stock
Mouser Part No
634-8SB10F8GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
8,908 In Stock
Alternative Packaging
1
$1.70
10
$1.41
25
$1.22
100
$1.15
1,500
$0.816
3,000
View
500
$1.01
1,000
$0.904
3,000
$0.798
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F8G-A-QFN20R
Silicon Labs
1:
$0.92
12,671 In Stock
73,500 On Order
Mouser Part No
634-8BB10F8GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
12,671 In Stock
73,500 On Order
View Dates
Alternative Packaging
Stock:
12,671 Can Dispatch Immediately
On Order:
21,000 Expected 05/11/2026
52,500 Expected 10/11/2026
Factory Lead Time:
12 Weeks
1
$0.92
10
$0.779
100
$0.64
250
$0.598
500
View
1,500
$0.50
500
$0.528
1,000
$0.513
1,500
$0.50
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
EFM8BB50F4G-A-QFN12
Silicon Labs
1:
$0.78
706 In Stock
Mouser Part No
634-M8BB50F4GAQFN12
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
706 In Stock
Alternative Packaging
1
$0.78
10
$0.67
25
$0.624
200
$0.589
600
View
600
$0.517
1,000
$0.464
2,600
$0.409
5,000
$0.374
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-QFN24R
Silicon Labs
1:
$1.80
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
$1.80
10
$1.50
25
$1.29
100
$1.22
1,500
$0.89
3,000
View
250
$1.20
500
$1.07
1,000
$0.949
3,000
$0.87
Buy
Min.: 1
Mult.: 1
Reel :
1,500
Details