8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 105
N76E003BQ20
Nuvoton
3,000:
HK$3.88
Non-Stocked Lead-Time 40 Weeks
Mouser Part No
503-N76E003BQ20
Nuvoton
8-bit Microcontrollers - MCU Low Pin Count 8051 Series; 2.4V to 5.5V; -40 to 105
Non-Stocked Lead-Time 40 Weeks
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
Details
SMD/SMT
LQFP-44
8051
18 kB
8 bit
12 bit
16 MHz
18 I/O
256 B
2.4 V
5.5 V
- 40 C
+ 105 C
Reel
8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V
CY8C3444LTI-119
Infineon Technologies
1:
HK$103.24
Non-Stocked Lead-Time 10 Weeks
Mouser Part No
727-CY8C3444LTI-119
Infineon Technologies
8-bit Microcontrollers - MCU 16K Flash 50MHz 8051 1.71V to 5.5V
Non-Stocked Lead-Time 10 Weeks
Alternative Packaging
1
HK$103.24
10
HK$83.93
25
HK$80.06
100
HK$66.75
250
View
250
HK$64.12
500
HK$59.43
1,000
HK$57.70
2,600
Quote
Buy
Min.: 1
Mult.: 1
Details
SMD/SMT
QFN-48
8051
16 kB
8 bit
12 bit
50 MHz
29 I/O
2 kB
1.71 V
5.5 V
- 40 C
+ 85 C
Tray
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
CY8C3445LTI-078
Infineon Technologies
1:
HK$102.75
Non-Stocked Lead-Time 10 Weeks
Mouser Part No
727-CY8C3445LTI-078
Infineon Technologies
8-bit Microcontrollers - MCU 32K Flash 50MHz 8051 1.71V to 5.5V
Non-Stocked Lead-Time 10 Weeks
Alternative Packaging
1
HK$102.75
10
HK$80.56
25
HK$71.68
100
HK$68.97
250
View
250
HK$65.92
520
HK$63.87
1,040
HK$62.14
2,600
Quote
Buy
Min.: 1
Mult.: 1
Details
SMD/SMT
QFN-48
8051
32 kB
8 bit
12 bit
50 MHz
29 I/O
4 kB
1.71 V
5.5 V
- 40 C
+ 85 C
Tray
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
CY8C3666AXI-036
Infineon Technologies
1:
HK$163.50
Non-Stocked Lead-Time 10 Weeks
Mouser Part No
727-CY8C3666AXI-036
Infineon Technologies
8-bit Microcontrollers - MCU 64K Flash 67MHz 8051 0.5V to 5.5V
Non-Stocked Lead-Time 10 Weeks
Alternative Packaging
1
HK$163.50
10
HK$131.19
25
HK$114.09
100
HK$110.48
180
View
180
HK$102.50
540
HK$98.72
1,080
Quote
Buy
Min.: 1
Mult.: 1
Details
SMD/SMT
TQFP-100
8051
64 kB
8 bit
12 bit
67 MHz
28 I/O
8 kB
1.71 V
1.89 V
+ 85 C
Tray
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
+1 image
EFM8SB20F32G-B-QFN24
Silicon Labs
1:
HK$18.82
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-EFM8SBF32GBQFN24
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
1
HK$18.82
10
HK$15.04
25
HK$13.23
100
HK$12.17
250
View
250
HK$11.84
500
HK$11.18
1,000
HK$10.77
1,911
HK$10.44
5,733
HK$10.19
Buy
Min.: 1
Mult.: 1
Details
SMD/SMT
QFN-24
CIP-51 8051
32 kB
8 bit
10 bit
25 MHz
16 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 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB52F16I-C-TSSOP20R
Silicon Labs
2,500:
HK$4.27
Non-Stocked Lead-Time 24 Weeks
Mouser Part No
634-EFM852F16ITOP20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 24 Weeks
Alternative Packaging
Buy
Min.: 2,500
Mult.: 2,500
Reel :
2,500
Details
SMD/SMT
TSSOP-20
16 kB
16 I/O
1.28 kB
1.8 V
5.5 V
- 40 C
+ 85 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F16G-C-TSSOP20R
Silicon Labs
1:
HK$8.47
Non-Stocked Lead-Time 24 Weeks
Mouser Part No
634-EFM851GCTSSOP20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 24 Weeks
Alternative Packaging
1
HK$8.47
10
HK$6.05
25
HK$5.45
100
HK$4.79
250
View
2,500
HK$4.27
250
HK$4.48
500
HK$4.29
1,000
HK$4.28
2,500
HK$4.27
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
SMD/SMT
TSSOP-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 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
EFM8BB50F4G-A-QFN12R
Silicon Labs
3,000:
HK$2.90
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F4GAQFN12R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
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
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F4G-A-SOIC16R
Silicon Labs
2,500:
HK$3.67
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F4GASIC16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 2,500
Mult.: 2,500
Reel :
2,500
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
+ 85 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F4G-A-QFN16R
Silicon Labs
3,000:
HK$3.03
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F4GAQFN16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
Details
SMD/SMT
QFN-16
4 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Reel
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:
HK$8.47
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
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
HK$8.47
10
HK$6.05
25
HK$5.45
100
HK$4.79
1,500
HK$4.03
3,000
View
250
HK$4.48
500
HK$4.29
1,000
HK$4.15
3,000
HK$3.95
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
+ 125 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
+1 image
EFM8SB20F16G-B-QFN24R
Silicon Labs
1,500:
HK$9.45
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-EFM8SB16GBQFN24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
1,500
HK$9.45
3,000
HK$9.29
Buy
Min.: 1,500
Mult.: 1,500
Reel :
1,500
Details
SMD/SMT
CIP-51 8051
16 kB
8 bit
10 bit
25 MHz
16 I/O
4.25 kB
1.8 V
3.6 V
- 40 C
+ 85 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
EFM8BB50F8G-A-QFN12R
Silicon Labs
3,000:
HK$3.30
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F8GAQFN12R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
Details
SMD/SMT
QFN-12
8 kB
8 bit
12 bit
50 MHz
9 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F8G-A-SOIC16R
Silicon Labs
2,500:
HK$4.15
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F8GASIC16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 2,500
Mult.: 2,500
Reel :
2,500
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
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F8I-A-SOIC16R
Silicon Labs
2,500:
HK$4.28
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F8IASIC16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 2,500
Mult.: 2,500
Reel :
2,500
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
+ 125 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
EFM8BB50F16I-A-QFN12R
Silicon Labs
1:
HK$7.89
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F16IAFN12R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 9 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
1
HK$7.89
10
HK$5.51
25
HK$4.94
100
HK$4.32
250
View
3,000
HK$3.83
250
HK$4.02
500
HK$3.84
3,000
HK$3.83
Buy
Min.: 1
Mult.: 1
Reel :
3,000
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
+ 125 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
EFM8BB50F4G-A-SOIC16
Silicon Labs
1:
HK$8.06
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F4GASOIC16
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
1
HK$8.06
10
HK$6.20
25
HK$5.50
100
HK$5.01
250
View
250
HK$4.84
500
HK$4.30
1,008
HK$4.14
2,016
HK$4.06
5,040
HK$4.02
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
+ 85 C
Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F8I-A-QFN16R
Silicon Labs
3,000:
HK$3.57
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F8IAQFN16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
Details
SMD/SMT
QFN-16
8 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 125 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F8G-A-QFN16R
Silicon Labs
3,000:
HK$3.44
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F8GAQFN16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
Details
SMD/SMT
QFN-16
8 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 85 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F16I-A-QFN16R
Silicon Labs
3,000:
HK$3.95
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F16IAFN16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
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
+ 125 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
EFM8BB50F4I-A-QFN16R
Silicon Labs
3,000:
HK$3.16
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-M8BB50F4IAQFN16R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 4 kB flash 0.5 kB RAM 12 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
Buy
Min.: 3,000
Mult.: 3,000
Reel :
3,000
Details
SMD/SMT
QFN-16
4 kB
8 bit
12 bit
50 MHz
12 I/O
512 B
1.8 V
5.5 V
- 40 C
+ 125 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F8I-C-TSSOP20R
Silicon Labs
2,500:
HK$4.14
Non-Stocked Lead-Time 24 Weeks
Mouser Part No
634-EFM851F8ICTOP20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
Non-Stocked Lead-Time 24 Weeks
Alternative Packaging
Buy
Min.: 2,500
Mult.: 2,500
Reel :
2,500
Details
SMD/SMT
TSSOP-20
16 kB
16 I/O
1.28 kB
1.8 V
5.5 V
- 40 C
+ 85 C
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:
HK$11.10
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
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
HK$11.10
10
HK$8.04
25
HK$7.27
100
HK$6.43
1,500
HK$5.66
3,000
View
250
HK$6.03
500
HK$5.79
1,000
HK$5.74
3,000
HK$5.60
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
+ 125 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F4G-A-QFN20R
Silicon Labs
1,500:
HK$6.49
Non-Stocked Lead-Time 12 Weeks
Mouser Part No
634-8SB10F4GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
Non-Stocked Lead-Time 12 Weeks
Alternative Packaging
1,500
HK$6.49
3,000
HK$6.43
Buy
Min.: 1,500
Mult.: 1,500
Reel :
1,500
Details
SMD/SMT
QFN-20
CIP-51 8051
4 kB
8 bit
12 bit
25 MHz
16 I/O
512 B
1.8 V
3.6 V
- 40 C
+ 85 C
Reel
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU
EFM8BB52F32G-C-QFN32R
Silicon Labs
1:
HK$8.63
5,000 Expected 9/10/2026
Mouser Part No
634-EFM852F32GQFN32R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 32 kB flash 2.304 kB RAM 29 GPIO BB5 8-bit MCU
5,000 Expected 9/10/2026
Alternative Packaging
1
HK$8.63
10
HK$6.72
25
HK$5.97
100
HK$5.45
2,500
HK$4.41
5,000
View
250
HK$5.29
500
HK$4.84
1,000
HK$4.78
5,000
HK$4.36
Buy
Min.: 1
Mult.: 1
Reel :
2,500
Details
SMD/SMT
QFN-32
16 kB
16 I/O
1.28 kB
1.8 V
5.5 V
- 40 C
+ 85 C
Reel, Cut Tape