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
Details
Through Hole
PDIP-20
8051
4 kB
8 bit
No ADC
24 MHz
15 I/O
128 B
4 V
6 V
- 40 C
+ 85 C
Tube
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
SMD/SMT
QFN-20
CIP-51 8051
2 kB
8 bit
12 bit
25 MHz
16 I/O
256 B
1.8 V
3.6 V
- 40 C
+ 85 C
Tube
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
SMD/SMT
QFN-20
CIP-51 8051
2 kB
8 bit
12 bit
25 MHz
16 I/O
256 B
1.8 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
+1 image
EFM8SB20F64G-B-QFN32
Silicon Labs
1:
$4.50
1,161 In Stock
End of Life
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
1,161 In Stock
Alternative Packaging
1
$4.50
10
$2.98
25
$2.72
100
$2.31
250
View
250
$2.20
500
$1.97
1,000
$1.94
2,500
$1.64
4,599
$1.61
Buy
Min.: 1 Mult.: 1
Details
SMD/SMT
QFN-32
CIP-51 8051
64 kB
8 bit
10 bit
25 MHz
24 I/O
4.25 kB
1.8 V
3.6 V
- 40 C
+ 85 C
Tube
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
SMD/SMT
SOIC-16
16 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Tube
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
SMD/SMT
QFN-16
16 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
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
SMD/SMT
QFN-20
CIP-51 8051
2 kB
8 bit
12 bit
25 MHz
16 I/O
256 B
2.2 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
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
SMD/SMT
QFN-16
16 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Cut Tape
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
SMD/SMT
QFN-20
CIP-51 8051
8 kB
8 bit
12 bit
25 MHz
16 I/O
512 B
2.2 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
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
SMD/SMT
SOIC-16
4 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 125 C
Tube
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
SMD/SMT
SOIC-16
16 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 125 C
Tube
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
SMD/SMT
SOIC-16
8 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Tube
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
SMD/SMT
QFN-20
16 kB
16 I/O
1.28 kB
1.8 V
5.5 V
- 40 C
+ 85 C
Reel, Cut Tape
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
SMD/SMT
QFN-20
CIP-51 8051
8 kB
8 bit
12 bit
25 MHz
16 I/O
512 B
1.8 V
3.6 V
- 40 C
+ 85 C
Tube
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
SMD/SMT
CIP-51 8051
8 kB
8 bit
12 bit
25 MHz
17 I/O
512 B
1.8 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
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
SMD/SMT
QFN-12
16 kB
8 bit
12 bit
50 MHz
9 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Cut Tape
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
SMD/SMT
QFN-20
CIP-51 8051
8 kB
8 bit
12 bit
25 MHz
16 I/O
512 B
1.8 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
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
SMD/SMT
QFN-12
4 kB
8 bit
12 bit
50 MHz
9 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
AT89S2051-24SU
Microchip Technology
1:
$2.61
504 In Stock
Mouser Part No 556-A89S2051-24SU
Microchip Technology
8-bit Microcontrollers - MCU 2K FLASH 24MHZ SOIC
504 In Stock
1
$2.61
25
$2.39
111
$2.18
Buy
Min.: 1 Mult.: 1
Details
SMD/SMT
SOIC-20
8051
2 kB
8 bit
No ADC
24 MHz
15 I/O
256 B
2.7 V
5.5 V
- 40 C
+ 85 C
Tube
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:
$1.96
2,678 In Stock
7,500 Expected 07/12/2026
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 07/12/2026
Alternative Packaging
1
$1.96
10
$1.62
25
$1.40
100
$1.32
2,500
$1.00
5,000
View
500
$1.16
1,000
$1.09
5,000
$0.99
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
SMD/SMT
CSP-16
CIP-51 8051
8 kB
8 bit
12 bit
25 MHz
13 I/O
256 B
3.6 V
2.2 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
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:
$4.08
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
$4.08
10
$2.70
25
$2.46
100
$2.09
1,500
$1.59
3,000
View
250
$1.99
500
$1.78
1,000
$1.67
3,000
$1.57
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
SMD/SMT
QFN-24
CIP-51 8051
32 kB
8 bit
10 bit/12 bit/14 bit
72 MHz
20 I/O
2.25 kB
2.2 V
3.6 V
- 40 C
+ 105 C
Reel, Cut Tape, MouseReel
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:
$2.53
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
$2.53
10
$2.13
25
$1.86
100
$1.74
500
View
500
$1.56
1,000
$1.45
2,520
$1.34
5,040
$1.29
Buy
Min.: 1 Mult.: 1
Details
SMD/SMT
QFN-24
CIP-51 8051
64 kB
8 bit
10 bit, 12 bit
50 MHz
20 I/O
4.35 kB
2.2 V
3.6 V
- 40 C
+ 85 C
Tube
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:
$4.03
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
$4.03
10
$2.67
25
$2.43
100
$2.06
1,500
$1.52
3,000
View
250
$1.96
500
$1.76
1,000
$1.53
3,000
$1.49
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
SMD/SMT
QFN-24
CIP-51 8051
64 kB
8 bit
10 bit, 12 bit
50 MHz
20 I/O
4.35 kB
2.2 V
3.6 V
- 40 C
+ 125 C
Reel, Cut Tape, MouseReel
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:
$1.78
2,547 In Stock
5,040 Expected 11/09/2026
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 11/09/2026
Alternative Packaging
1
$1.78
10
$1.51
25
$1.32
100
$1.23
250
View
250
$1.20
500
$1.06
1,000
$0.982
2,520
$0.948
5,040
$0.934
Buy
Min.: 1 Mult.: 1
Details
SMD/SMT
QFN-20
CIP-51 8051
8 kB
8 bit
12 bit
50 MHz
13 I/O
2.25 kB
2.2 V
3.6 V
- 40 C
+ 85 C
Tube
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:
$3.67
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
$3.67
10
$2.48
25
$2.30
100
$2.00
1,500
$1.55
3,000
View
250
$1.87
500
$1.64
1,000
$1.55
3,000
$1.32
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
SMD/SMT
QFN-24
CIP-51 8051
64 kB
8 bit
10 bit, 12 bit
50 MHz
20 I/O
4.35 kB
2.2 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
Israel
