8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F16G-C-QFN20R
Silicon Labs
1:
S/3.66
2,499 In Stock
Mouser Part # 634-EFM852F16GQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
2,499 In Stock
Alternative Packaging
1
S/3.66
10
S/3.15
25
S/2.77
100
S/2.62
2,500
S/1.90
5,000
View
250
S/2.53
500
S/2.22
1,000
S/2.10
5,000
S/1.74
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
16 kB
1.28 kB
QFN-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F8G-C-QFN20
Silicon Labs
1:
S/7.59
294 In Stock
Mouser Part # 634-EFM8B51F8GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
294 In Stock
Alternative Packaging
1
S/7.59
10
S/4.63
25
S/4.05
100
S/3.04
600
View
600
S/2.56
1,000
S/2.30
2,600
S/1.97
5,000
S/1.80
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
QFN-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
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:
S/15.96
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
S/15.96
10
S/11.52
25
S/10.47
100
S/8.64
250
View
250
S/8.29
500
S/7.59
1,000
S/7.16
2,520
S/7.05
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 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F32I-D-4QFN24
Silicon Labs
1:
S/12.96
475 In Stock
Mouser Part # 634-EF8BB31F32ID4F24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
475 In Stock
Alternative Packaging
1
S/12.96
10
S/8.52
25
S/7.86
100
S/6.85
250
View
250
S/6.42
500
S/5.61
1,000
S/4.71
1,911
S/4.67
5,733
S/4.55
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
32 kB
2.3 kB
QFN-24
50 MHz
10 bit, 12 bit
20 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
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:
S/5.10
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
S/5.10
10
S/4.24
25
S/3.66
100
S/3.32
2,500
S/2.29
5,000
View
250
S/2.89
500
S/2.76
1,000
S/2.38
5,000
S/2.20
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:
S/4.90
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
S/4.90
10
S/4.20
25
S/3.67
100
S/3.41
500
View
500
S/3.03
1,000
S/2.92
2,520
S/2.58
5,040
S/2.48
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:
S/12.38
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
S/12.38
10
S/8.06
25
S/7.40
100
S/6.34
250
View
250
S/5.99
500
S/5.41
1,000
S/4.52
2,500
S/4.40
4,599
S/4.20
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:
S/17.36
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
S/17.36
10
S/11.48
25
S/10.43
100
S/8.87
250
View
1,500
S/7.40
250
S/8.41
500
S/7.55
1,000
S/7.40
1,500
S/7.40
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 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64I-D-QFN32R
Silicon Labs
1:
S/16.00
2,430 Expected 9/11/2026
Mouser Part # 634-EF8BB31F64IDN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
2,430 Expected 9/11/2026
Alternative Packaging
1
S/16.00
10
S/10.59
25
S/9.65
100
S/8.17
250
View
2,500
S/6.15
250
S/7.75
500
S/6.97
1,000
S/6.19
2,500
S/6.15
Buy
Min.: 1 Mult.: 1
Reel :2,500
Details
CIP-51 8051
64 kB
4.35 kB
QFN-32
50 MHz
10 bit, 12 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
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:
S/4.52
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
S/4.52
10
S/3.85
25
S/3.38
100
S/3.15
250
View
250
S/2.93
500
S/2.67
1,000
S/2.46
2,520
S/2.36
5,040
S/2.30
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:
S/2.67
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
S/2.67
5,000
S/2.62
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:
S/9.65
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
S/9.65
10
S/8.14
25
S/7.12
100
S/6.66
500
View
500
S/5.92
1,000
S/5.22
2,520
S/5.06
5,040
S/4.98
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
AEC-Q100
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB Flash 0.25 kB RAM 8-bit Busy Bee MCU
EFM8BB10F2A-A-QFN20R
Silicon Labs
1:
S/13.58
Non-Stocked Lead-Time 12 Weeks
Mouser Part # 634-M8BB10F2AAQFN20R
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
S/13.58
10
S/8.95
25
S/8.25
100
S/7.16
250
View
1,500
S/4.98
250
S/6.73
500
S/5.88
1,000
S/5.02
1,500
S/4.98
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
+ 125 C
EFM8BB1
AEC-Q100
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F2I-A-QFN20R
Silicon Labs
1:
S/6.38
Non-Stocked Lead-Time 12 Weeks
Mouser Part # 634-M8BB10F2IAQFN20R
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
S/6.38
10
S/4.09
25
S/3.63
100
S/2.99
1,500
S/1.93
3,000
View
250
S/2.60
500
S/2.47
1,000
S/2.07
3,000
S/1.89
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
+ 125 C
EFM8BB1
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
EFM8BB10F8A-A-QFN20R
Silicon Labs
1,500:
S/5.06
Non-Stocked Lead-Time 12 Weeks
Mouser Part # 634-M8BB10F8AAQFN20R
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
Buy
Min.: 1,500 Mult.: 1,500
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
+ 125 C
EFM8BB1
AEC-Q100
Reel
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F8I-A-QFN20R
Silicon Labs
1:
S/8.68
Non-Stocked Lead-Time 12 Weeks
Mouser Part # 634-M8BB10F8IAQFN20R
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
1
S/8.68
10
S/5.57
25
S/4.94
100
S/4.09
1,500
S/2.69
3,000
View
250
S/3.55
500
S/3.36
1,000
S/2.83
3,000
S/2.65
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
+ 125 C
EFM8BB1
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16I-C-QFN28R
Silicon Labs
1,500:
S/4.87
Non-Stocked Lead-Time 31 Weeks
Mouser Part # 634-8BB22F16ICQFN28R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 31 Weeks
Alternative Packaging
Buy
Min.: 1,500 Mult.: 1,500
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
+ 125 C
EFM8BB2
Reel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F16A-D-4QFN24R
Silicon Labs
1,500:
S/7.05
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16AD424R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
1,500
S/7.05
3,000
S/7.01
Buy
Min.: 1,500 Mult.: 1,500
Reel :1,500
Details
CIP-51 8051
16 kB
2.3 kB
QFN-24
50 MHz
10 bit, 12 bit
20 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Reel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F16A-D-4QFN24
Silicon Labs
1,911:
S/7.05
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16AD4F24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
1,911
S/7.05
5,733
S/7.01
Buy
Min.: 1,911 Mult.: 1,911
Details
CIP-51 8051
16 kB
2.3 kB
QFN-24
50 MHz
10 bit, 12 bit
20 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16A-D-5QFN32R
Silicon Labs
1,500:
S/7.79
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16AD532R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
Buy
Min.: 1,500 Mult.: 1,500
Reel :1,500
Details
CIP-51 8051
16 kB
2.3 kB
QFN-32
50 MHz
10 bit, 12 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Reel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16A-D-5QFN32
Silicon Labs
1,533:
S/8.06
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16AD5F32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
1,533
S/8.06
3,066
S/7.86
4,599
S/7.79
Buy
Min.: 1,533 Mult.: 1,533
Details
CIP-51 8051
16 kB
2.3 kB
QFN-32
50 MHz
10 bit, 12 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16I-D-5QFN32R
Silicon Labs
1:
S/11.56
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16ID532R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
1
S/11.56
10
S/7.51
25
S/6.89
100
S/5.92
1,500
S/4.16
3,000
View
250
S/5.57
500
S/4.87
1,000
S/4.20
3,000
S/4.13
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
16 kB
2.3 kB
QFN-32
50 MHz
10 bit, 12 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16I-D-5QFN32
Silicon Labs
1:
S/11.56
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16ID5F32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
1
S/11.56
10
S/7.51
25
S/6.89
100
S/5.92
250
View
250
S/5.57
500
S/4.87
1,000
S/4.32
2,500
S/4.20
4,599
S/4.13
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-32
50 MHz
10 bit, 12 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16I-D-QFP32R
Silicon Labs
1:
S/13.16
Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F16IDP32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Lead-Time 16 Weeks
Alternative Packaging
1
S/13.16
10
S/8.68
25
S/8.02
100
S/6.97
500
S/5.49
1,000
View
250
S/6.54
1,000
S/5.06
2,500
S/4.98
5,000
S/4.90
Buy
Min.: 1 Mult.: 1
Reel :500
Details
CIP-51 8051
16 kB
2.3 kB
QFP-32
50 MHz
10 bit, 12 bit
28 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F32A-D-5QFN32R
Silicon Labs
1,500:
S/8.02
Non-Stocked Lead-Time 16 Weeks
Mouser Part # 634-EF8BB31F32AD532R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
Non-Stocked Lead-Time 16 Weeks
Alternative Packaging
Buy
Min.: 1,500 Mult.: 1,500
Reel :1,500
Details
CIP-51 8051
32 kB
2.3 kB
QFN-32
50 MHz
10 bit, 12 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 125 C
Reel
