8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16G-D-QFN32
Silicon Labs
1:
$1.76
1,432 In Stock
Mouser Part No 634-EF8BB31F16GDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,432 In Stock
Alternative Packaging
1
$1.76
10
$1.49
25
$1.31
100
$1.24
250
View
250
$1.10
500
$1.05
1,000
$1.01
2,450
$0.968
4,900
$0.957
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
+ 85 C
Tray
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64G-D-QFN32
Silicon Labs
1:
$2.67
88 In Stock
9,800 On Order
Mouser Part No 634-EF8BB31F64GDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
88 In Stock
9,800 On Order
View Dates
Alternative Packaging
Stock:
88 Can Dispatch Immediately
On Order:
4,900 Expected 06/10/2026
4,900 Expected 30/10/2026
Factory Lead Time:
16 Weeks
1
$2.67
10
$1.98
25
$1.81
100
$1.62
250
View
250
$1.53
500
$1.48
1,000
$1.42
2,450
$1.39
4,900
$1.35
Buy
Min.: 1 Mult.: 1
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
+ 85 C
Tray
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16G-C-TSSOP20
Silicon Labs
1:
$1.14
1,452 In Stock
Mouser Part No 634-EFM8516GCTSSOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
1,452 In Stock
Alternative Packaging
1
$1.14
10
$0.97
25
$0.854
100
$0.758
200
View
200
$0.717
2,600
$0.50
5,000
$0.484
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
TSSOP-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16G-C-QFN20
Silicon Labs
1:
$0.98
151 In Stock
Mouser Part No 634-EFM851F16GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
151 In Stock
Alternative Packaging
1
$0.98
10
$0.768
25
$0.683
100
$0.605
200
View
200
$0.569
600
$0.545
1,000
$0.527
2,600
$0.504
5,000
$0.492
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 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16G-C-QFN20R
Silicon Labs
1:
$0.93
1,016 In Stock
7,500 On Order
Mouser Part No 634-EFM851F16GQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
1,016 In Stock
7,500 On Order
Alternative Packaging
1
$0.93
10
$0.669
25
$0.603
100
$0.53
250
View
2,500
$0.474
250
$0.496
500
$0.475
2,500
$0.474
Buy
Min.: 1 Mult.: 1
Reel :2,500
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 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16I-C-QFN20
Silicon Labs
1:
$1.00
194 In Stock
Mouser Part No 634-EFM851F16ICQFN20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
194 In Stock
Alternative Packaging
1
$1.00
10
$0.848
200
$0.607
600
$0.581
1,000
View
1,000
$0.563
2,600
$0.538
5,000
$0.524
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 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16I-C-TSSOP20
Silicon Labs
1:
$1.14
146 In Stock
Mouser Part No 634-EFM851F16TSSOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
146 In Stock
Alternative Packaging
1
$1.14
10
$0.89
25
$0.791
100
$0.71
200
View
200
$0.664
600
$0.633
1,000
$0.615
2,600
$0.588
5,000
$0.574
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
TSSOP-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
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-TSSOP20
Silicon Labs
1:
$0.99
297 In Stock
Mouser Part No 634-EFM851F8GCTSOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
297 In Stock
Alternative Packaging
1
$0.99
10
$0.764
25
$0.752
600
$0.563
1,000
View
1,000
$0.545
2,600
$0.521
5,000
$0.508
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
TSSOP-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F16G-C-QFN20
Silicon Labs
1:
$0.92
234 In Stock
Mouser Part No 634-EFM852F16GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
234 In Stock
Alternative Packaging
1
$0.92
10
$0.733
200
$0.522
600
$0.499
1,000
View
1,000
$0.479
2,600
$0.459
5,000
$0.447
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 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU
EFM8BB52F16G-C-QFN32
Silicon Labs
1:
$0.94
1,899 In Stock
800 On Order
Mouser Part No 634-EFM852F16GCQFN32
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU
1,899 In Stock
800 On Order
Alternative Packaging
1
$0.94
10
$0.809
100
$0.679
200
$0.648
600
View
600
$0.543
1,000
$0.496
2,600
$0.425
5,000
$0.388
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
QFN-32
12 bit
29I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F16G-C-TSSOP20
Silicon Labs
1:
$1.14
380 In Stock
Mouser Part No 634-EFM852F16GCTOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
380 In Stock
Alternative Packaging
1
$1.14
10
$0.965
25
$0.847
100
$0.774
600
View
600
$0.581
1,000
$0.563
2,600
$0.538
5,000
$0.524
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
TSSOP-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
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:
$0.94
2,499 In Stock
Mouser Part No 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
$0.94
10
$0.809
25
$0.711
100
$0.672
2,500
$0.488
5,000
View
250
$0.649
500
$0.57
1,000
$0.539
5,000
$0.447
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 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F32G-C-QFN20
Silicon Labs
1:
$1.83
2,182 In Stock
Mouser Part No 634-EFM852F32GCQFN20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
2,182 In Stock
Alternative Packaging
1
$1.83
10
$1.17
25
$1.04
100
$0.855
200
View
200
$0.745
600
$0.706
1,000
$0.593
2,600
$0.541
5,000
$0.524
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 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU
EFM8BB52F32I-C-QFN32
Silicon Labs
1:
$1.20
606 In Stock
Mouser Part No 634-EFM852F32ICQFN32
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU
606 In Stock
Alternative Packaging
1
$1.20
10
$1.02
25
$0.895
100
$0.80
600
View
600
$0.738
1,000
$0.598
2,600
$0.571
5,000
$0.557
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
QFN-32
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F32I-C-TSSOP20
Silicon Labs
1:
$1.28
402 In Stock
Mouser Part No 634-EFM852F32ICTOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 16 GPIO BB5 8-bit MCU
402 In Stock
Alternative Packaging
1
$1.28
10
$0.999
25
$0.95
600
$0.718
1,000
View
1,000
$0.686
2,600
$0.667
5,000
$0.651
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
TSSOP-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU
EFM8BB52F32I-C-TSSOP28
Silicon Labs
1:
$1.43
76 In Stock
Mouser Part No 634-EFM852F32ICTOP28
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 25 GPIO BB5 8-bit MCU
76 In Stock
Alternative Packaging
1
$1.43
10
$1.22
25
$1.07
100
$0.811
200
View
200
$0.767
600
$0.736
1,000
$0.703
2,600
$0.684
5,000
$0.667
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
TSSOP-28
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
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:
$1.06
294 In Stock
Mouser Part No 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
$1.06
10
$0.76
200
$0.706
600
$0.517
1,000
View
1,000
$0.497
2,600
$0.476
5,000
$0.463
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:
$3.14
463 In Stock
2,520 Expected 30/09/2026
Mouser Part No 634-EFM8BB21F16FN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
463 In Stock
2,520 Expected 30/09/2026
Alternative Packaging
1
$3.14
10
$2.34
25
$2.14
100
$1.92
250
View
250
$1.81
500
$1.77
1,000
$1.68
2,520
$1.63
5,040
$1.60
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 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU
EFM8BB52F16I-C-QFN32
Silicon Labs
1:
$0.96
1,200 In Stock
2,200 On Order
Mouser Part No 634-EFMB52F16ICQFN32
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 29 GPIO BB5 8-bit MCU
1,200 In Stock
2,200 On Order
Alternative Packaging
1
$0.96
10
$0.67
25
$0.628
1,000
$0.493
5,000
$0.48
Buy
Min.: 1 Mult.: 1
Details
16 kB
1.28 kB
QFN-32
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 85 C
Cut Tape
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
+1 image
EFM8LB11F16E-C-QFP32
Silicon Labs
1:
$2.85
36 In Stock
Mouser Part No 634-LB11F16ECQFP32
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU
36 In Stock
Alternative Packaging
1
$2.85
10
$2.12
25
$1.94
100
$1.74
250
View
250
$1.65
500
$1.61
1,000
$1.58
2,500
$1.55
5,000
$1.53
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
1.25 kB
QFP-32
72 MHz
10 bit/12 bit/14 bit
28 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 105 C
EFM8LB1
Tray
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F32E-C-QFN24
Silicon Labs
1:
$2.88
255 In Stock
Mouser Part No 634-LB12F32ECQFN24
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
255 In Stock
Alternative Packaging
1
$2.88
10
$2.15
25
$1.96
100
$1.76
250
View
250
$1.66
500
$1.63
1,000
$1.56
5,040
$1.55
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
32 kB
2.25 kB
QFN-24
72 MHz
10 bit/12 bit/14 bit
20 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 105 C
EFM8LB1
Tube
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:
$3.83
8 In Stock
23,750 On Order
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
8 In Stock
23,750 On Order
View Dates
Alternative Packaging
Stock:
8 Can Dispatch Immediately
On Order:
6,250 Expected 12/03/2027
17,500 Expected 07/05/2027
Factory Lead Time:
20 Weeks
1
$3.83
10
$3.20
25
$2.81
100
$2.67
250
View
250
$2.50
500
$2.40
1,000
$2.19
2,500
$2.12
5,000
$2.07
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
64 kB
4.25 kB
QFP-32
72 MHz
10 bit/12 bit/14 bit
28 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 105 C
EFM8LB1
Tray
8-bit Microcontrollers - MCU
EFM8LB12F64ES1-C-QFN32
Silicon Labs
1:
$3.56
279 In Stock
Mouser Part No 634-LB12F64ES1CQFN32
Silicon Labs
8-bit Microcontrollers - MCU
279 In Stock
Alternative Packaging
1
$3.56
10
$2.80
25
$2.51
100
$2.31
250
View
250
$2.13
500
$2.07
1,000
$2.01
2,450
$1.97
4,900
$1.94
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
64 kB
4.25 kB
QFN-32
72 MHz
10 bit/12 bit/14 bit
29 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 105 C
EFM8LB1
Tray
8-bit Microcontrollers - MCU 8kB/768B RAM, 10b ADC, 10b DAC, QFN20 OTP available (T630-GM)
+2 images
C8051F330-GMR
Silicon Labs
1:
$11.23
24 In Stock
1,500 Expected 16/10/2026
NRND
Mouser Part No 634-C8051F330-GMR
NRND
Silicon Labs
8-bit Microcontrollers - MCU 8kB/768B RAM, 10b ADC, 10b DAC, QFN20 OTP available (T630-GM)
24 In Stock
1,500 Expected 16/10/2026
Alternative Packaging
1
$11.23
10
$9.12
25
$7.54
100
$7.03
250
View
1,500
$6.31
250
$6.85
500
$6.47
1,000
$6.31
1,500
$6.31
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8051
8 kB
768 B
QFN-20
25 MHz
10 bit
17 I/O
2.7 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
C8051F330
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU
C8051F383-GM
Silicon Labs
1:
$5.90
21 In Stock
Mouser Part No 634-C8051F383-GM
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU
21 In Stock
Alternative Packaging
1
$5.90
10
$5.08
25
$4.17
100
$3.87
250
View
250
$3.77
500
$3.58
1,000
$3.56
2,500
$3.53
Buy
Min.: 1 Mult.: 1
Details
8051
32 kB
2.25 kB
QFN-32
48 MHz
10 bit
25 I/O
2.7 V
5.25 V
SMD/SMT
8 bit
- 40 C
+ 85 C
C8051F383
Tube
Israel