8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
EFM8BB10F8I-A-SOIC16
Silicon Labs
1:
$1.26
2,249 In Stock
Mouser Part # 634-8BB10F8I-ASOIC16
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
2,249 In Stock
Alternative Packaging
1
$1.26
25
$0.893
250
$0.888
500
$0.825
1,008
View
1,008
$0.726
2,016
$0.662
5,040
$0.637
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
8 kB
512 B
SOIC-16
25 MHz
12 bit
13 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F4G-A-QFN20R
Silicon Labs
1:
$1.18
4,518 In Stock
Mouser Part # 634-8BB10F4GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
4,518 In Stock
Alternative Packaging
1
$1.18
10
$0.982
25
$0.85
100
$0.798
1,500
$0.573
3,000
View
250
$0.79
500
$0.698
1,000
$0.629
3,000
$0.556
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
4 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB10F2I-A-QFN20
Silicon Labs
1:
$0.96
3,158 In Stock
Mouser Part # 634-EFM8BB10F2IAFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
3,158 In Stock
Alternative Packaging
1
$0.96
10
$0.82
25
$0.72
100
$0.67
250
View
250
$0.669
500
$0.592
1,000
$0.532
2,520
$0.486
5,040
$0.485
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
2 kB
256 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F2G-A-QFN20
Silicon Labs
1:
$0.86
15,995 In Stock
Mouser Part # 634-8BB10F2GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
15,995 In Stock
Alternative Packaging
1
$0.86
10
$0.733
25
$0.644
100
$0.633
250
View
250
$0.581
500
$0.513
1,000
$0.461
2,520
$0.423
5,040
$0.402
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
2 kB
256 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16I-C-QFN20
Silicon Labs
1:
$1.75
4,729 In Stock
Mouser Part # 634-8BB21F16I-CQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
4,729 In Stock
Alternative Packaging
1
$1.75
10
$1.48
25
$1.30
100
$1.21
250
View
250
$1.14
500
$0.99
1,000
$0.862
2,520
$0.803
5,040
$0.802
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-20
50 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
Tube
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 1/15/2027
Mouser Part # 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 1/15/2027
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
CIP-51 8051
16 kB
2.3 kB
QFN-20
50 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB2
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 # 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
$0.474
3,000
View
500
$0.54
1,000
$0.498
3,000
$0.453
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
2 kB
256 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Reel, Cut Tape, MouseReel
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
21,000 Expected 11/5/2026
Mouser Part # 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
21,000 Expected 11/5/2026
Alternative Packaging
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
CIP-51 8051
8 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Reel, Cut Tape, MouseReel
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:
$2.52
2,666 In Stock
Mouser Part # 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
$2.52
10
$1.95
25
$1.77
100
$1.50
1,500
$1.25
3,000
View
500
$1.34
1,000
$1.25
3,000
$1.05
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB2
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F4G-A-QFN20
Silicon Labs
1:
$1.11
218 In Stock
Mouser Part # 634-8BB10F4GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
218 In Stock
Alternative Packaging
1
$1.11
10
$0.947
25
$0.832
250
$0.774
500
View
500
$0.686
1,000
$0.654
2,520
$0.608
5,040
$0.599
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
4 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+4 images
EFM8BB10F8G-A-SOIC16
Silicon Labs
1:
$1.16
1,570 In Stock
Mouser Part # 634-8BB10F8GASO16
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
1,570 In Stock
Alternative Packaging
1
$1.16
25
$0.823
100
$0.797
500
$0.723
1,008
View
1,008
$0.68
2,016
$0.648
5,040
$0.608
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
8 kB
512 B
SOIC-16
25 MHz
12 bit
13 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
EFM8BB10F8A-A-QFN20
Silicon Labs
1:
$3.53
20 In Stock
Mouser Part # 634-FM8BB10F8AAQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
20 In Stock
Alternative Packaging
1
$3.53
10
$2.32
25
$1.91
100
$1.73
250
View
250
$1.66
500
$1.52
1,000
$1.32
2,520
$1.27
5,040
$1.24
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
8 kB
512 B
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
AEC-Q100
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB21F16I-C-QSOP24
Silicon Labs
1:
$1.91
3,126 In Stock
End of Life
Mouser Part # 634-8BB21F16ICQSOP24
End of Life
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
3,126 In Stock
Alternative Packaging
1
$1.91
10
$1.62
100
$1.52
2,352
$1.42
5,880
$1.06
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QSOP-24
50 MHz
12 bit
21 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F4I-A-QFN20
Silicon Labs
1:
$2.23
244 In Stock
End of Life
Mouser Part # 634-M8BB10F4IAQFN20
End of Life
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
244 In Stock
Alternative Packaging
1
$2.23
10
$1.43
25
$1.27
100
$1.05
250
View
250
$0.912
500
$0.864
1,000
$0.726
2,520
$0.674
5,040
$0.656
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
4 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16G-C-QFN20
Silicon Labs
1:
$1.61
278 In Stock
2,520 Expected 1/15/2027
Mouser Part # 634-8BB21F16GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
278 In Stock
2,520 Expected 1/15/2027
Alternative Packaging
1
$1.61
10
$1.37
25
$1.20
100
$1.12
250
View
250
$1.08
500
$0.952
1,000
$0.886
2,520
$0.855
5,040
$0.838
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-20
50 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB2
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16G-C-QFN28
Silicon Labs
1:
$2.10
1,412 In Stock
Mouser Part # 634-8BB22F16GCQFN28
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,412 In Stock
Alternative Packaging
1
$2.10
10
$1.77
25
$1.51
100
$1.43
250
View
250
$1.41
500
$1.26
1,000
$1.07
2,500
$1.06
4,599
$1.05
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB2
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16I-C-QFN20R
Silicon Labs
1:
$2.60
166 In Stock
Mouser Part # 634-BB21F16ICQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
166 In Stock
Alternative Packaging
1
$2.60
10
$1.69
25
$1.54
100
$1.30
250
View
1,500
$0.945
250
$1.22
500
$1.08
1,000
$0.946
1,500
$0.945
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
16 kB
2.25 kB
QFN-20
50 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB21F16A-C-QFN20
Silicon Labs
1:
$4.10
44 In Stock
2,520 Expected 9/1/2026
Mouser Part # 634-EFM8BB21F16FN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
44 In Stock
2,520 Expected 9/1/2026
Alternative Packaging
1
$4.10
10
$2.96
25
$2.69
100
$2.22
250
View
250
$2.13
500
$1.95
1,000
$1.84
2,520
$1.81
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.25 kB
QFN-20
50 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
AEC-Q100
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+4 images
EFM8BB10F8G-A-SOIC16R
Silicon Labs
1:
$1.31
5,000 Expected 9/15/2026
Mouser Part # 634-8BB10F8GASO16R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
5,000 Expected 9/15/2026
Alternative Packaging
1
$1.31
10
$1.09
25
$0.94
100
$0.854
2,500
$0.588
5,000
View
250
$0.743
500
$0.709
1,000
$0.612
5,000
$0.566
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
CIP-51 8051
8 kB
512 B
SOIC-16
25 MHz
12 bit
13 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB10F8I-A-QFN20
Silicon Labs
1:
$1.26
2,520 Expected 9/1/2026
Mouser Part # 634-FM8BB10F8IAQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
2,520 Expected 9/1/2026
Alternative Packaging
1
$1.26
10
$1.08
25
$0.942
100
$0.877
500
View
500
$0.778
1,000
$0.749
2,520
$0.663
5,040
$0.638
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
8 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16I-C-QFN28
Silicon Labs
1:
$3.18
1 In Stock
Mouser Part # 634-8BB22F16ICQFN28
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1 In Stock
Alternative Packaging
1
$3.18
10
$2.07
25
$1.90
100
$1.63
250
View
250
$1.54
500
$1.39
1,000
$1.16
2,500
$1.13
4,599
$1.08
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
50 MHz
12 bit
22 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16A-C-QFN20R
Silicon Labs
1:
$4.46
1,498 Expected 9/1/2026
Mouser Part # 634-BB21F16ACQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,498 Expected 9/1/2026
Alternative Packaging
1
$4.46
10
$2.95
25
$2.68
100
$2.28
250
View
1,500
$1.90
250
$2.16
500
$1.94
1,000
$1.90
1,500
$1.90
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
16 kB
2.25 kB
QFN-20
50 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB2
AEC-Q100
Reel, 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-QFN20
Silicon Labs
1:
$1.16
Lead-Time 12 Weeks
Mouser Part # 634-8BB10F8GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Lead-Time 12 Weeks
Alternative Packaging
1
$1.16
10
$0.99
25
$0.868
100
$0.809
250
View
250
$0.753
500
$0.687
1,000
$0.633
2,520
$0.606
5,040
$0.591
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
8 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
EFM8BB10F8I-A-SOIC16R
Silicon Labs
2,500:
$0.687
Non-Stocked Lead-Time 12 Weeks
Mouser Part # 634-8BB10F8IASOIC16R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
2,500
$0.687
5,000
$0.673
Buy
Min.: 2,500 Mult.: 2,500
Reel :2,500
Details
CIP-51 8051
8 kB
512 B
SOIC-16
25 MHz
12 bit
13 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
Reel
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB Flash 0.25 kB RAM 8-bit Busy Bee MCU
EFM8BB10F2A-A-QFN20
Silicon Labs
1:
$2.48
Non-Stocked Lead-Time 12 Weeks
Mouser Part # 634-FM8BB10F2AAQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB Flash 0.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
1
$2.48
10
$2.09
25
$1.83
100
$1.71
500
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500
$1.52
1,000
$1.34
2,520
$1.30
5,040
$1.28
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Min.: 1 Mult.: 1
Details
CIP-51 8051
2 kB
256 B
QFN-20
25 MHz
12 bit
16 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
EFM8BB1
AEC-Q100
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