8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)
C8051F321-GM
Silicon Labs
1:
¥2,239
208 In Stock
1,533 Expected 12/4/2026
Mouser Part # 634-C8051F321-GM
Silicon Labs
8-bit Microcontrollers - MCU USB-Flash-16k-ADC-QFN28 OTP available (T321-GM)
208 In Stock
1,533 Expected 12/4/2026
Alternative Packaging
1
¥2,239
10
¥1,828.8
25
¥1,669.3
100
¥1,582.9
250
View
250
¥1,556.4
500
¥1,548.1
2,500
Quote
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QFN-28
25 MHz
10 bit
21 I/O
2.7 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
C8051F321
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16G-D-QFN32R
Silicon Labs
1:
¥451.8
4,177 In Stock
Mouser Part # 634-EF8BB31F16GDN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
4,177 In Stock
Alternative Packaging
1
¥451.8
10
¥294
25
¥265.8
100
¥224.2
2,500
¥150.2
5,000
View
250
¥210.9
500
¥184.4
1,000
¥160
5,000
¥146.8
Buy
Min.: 1 Mult.: 1
Reel :2,500
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
+ 85 C
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F32I-D-4QFN24R
Silicon Labs
1:
¥553.1
1,520 In Stock
Mouser Part # 634-EF8BB31F32ID424R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
1,520 In Stock
Alternative Packaging
1
¥553.1
10
¥363.8
25
¥335.5
100
¥292.3
1,500
¥194.3
3,000
View
250
¥274.1
500
¥239.2
1,000
¥199.3
3,000
¥189.4
Buy
Min.: 1 Mult.: 1
Reel :1,500
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
Reel, Cut Tape
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:
¥609.6
2,270 In Stock
Mouser Part # 634-EF8BB31F64GDF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
2,270 In Stock
Alternative Packaging
1
¥609.6
10
¥411.9
25
¥382
100
¥332.2
1,500
¥220.9
3,000
View
250
¥310.6
500
¥272.4
1,000
¥225.9
3,000
¥214.3
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
64 kB
4.35 kB
QFN-24
50 MHz
10 bit, 12 bit
20 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 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:
¥609.6
6,387 In Stock
Mouser Part # 634-EF8BB31F64GDQF24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
6,387 In Stock
Alternative Packaging
1
¥609.6
10
¥411.9
25
¥382
100
¥332.2
250
View
250
¥310.6
500
¥272.4
1,000
¥225.9
2,520
¥220.9
5,040
¥214.3
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
64 kB
4.35 kB
QFN-24
50 MHz
10 bit, 12 bit
20 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 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:
¥669.4
1,395 In Stock
Mouser Part # 634-EF8BB31F64ID424R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
1,395 In Stock
Alternative Packaging
1
¥669.4
10
¥443.5
25
¥403.6
100
¥342.2
1,500
¥245.8
3,000
View
250
¥325.6
500
¥292.3
1,000
¥252.5
3,000
¥240.8
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
64 kB
4.35 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, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64I-D-QFN32
Silicon Labs
1:
¥722.5
1,599 In Stock
Mouser Part # 634-EF8BB31F64IDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
1,599 In Stock
Alternative Packaging
1
¥722.5
10
¥478.4
25
¥435.2
100
¥370.4
250
View
250
¥352.1
500
¥315.6
1,000
¥274.1
2,450
¥264.1
4,900
¥259.1
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
+ 125 C
Tray
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:
¥304
14,898 In Stock
Mouser Part # 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
14,898 In Stock
Alternative Packaging
1
¥304
10
¥194.3
25
¥172.7
100
¥142
250
View
2,500
¥86.5
250
¥123.9
500
¥117.4
1,000
¥102
2,500
¥86.5
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 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F32E-C-QFN24R
Silicon Labs
1:
¥715.9
980 In Stock
Mouser Part # 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
¥715.9
10
¥473.4
25
¥431.9
100
¥367.1
1,500
¥260.8
3,000
View
250
¥348.8
500
¥312.3
1,000
¥270.7
3,000
¥255.8
Buy
Min.: 1 Mult.: 1
Reel :1,500
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
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN24R
Silicon Labs
1:
¥790.6
4,091 In Stock
Mouser Part # 634-LB12F64ECQFN24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
4,091 In Stock
Alternative Packaging
1
¥790.6
10
¥523.2
25
¥476.7
100
¥405.3
1,500
¥289
3,000
View
250
¥383.7
500
¥343.8
1,000
¥299
3,000
¥284
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
64 kB
4.25 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
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN32
Silicon Labs
1:
¥823.9
2,603 In Stock
Mouser Part # 634-LB12F64ECQFN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
2,603 In Stock
Alternative Packaging
1
¥823.9
10
¥544.8
25
¥496.6
100
¥421.9
250
View
250
¥400.3
500
¥358.8
1,000
¥310.6
2,450
¥300.6
4,900
¥295.7
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 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
EFM8LB12F64E-C-QFN32R
Silicon Labs
1:
¥823.9
4,362 In Stock
Mouser Part # 634-LB12F64ECQFN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 75 MHz 64 kB flash 4.25 kB RAM 8-bit Laser Bee MCU
4,362 In Stock
Alternative Packaging
1
¥823.9
10
¥544.8
25
¥496.6
100
¥421.9
2,500
¥300.6
5,000
View
250
¥400.3
500
¥358.8
1,000
¥310.6
5,000
¥295.7
Buy
Min.: 1 Mult.: 1
Reel :2,500
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
Reel, Cut Tape
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:
¥320.6
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
¥320.6
10
¥204.3
25
¥182.7
100
¥150.3
250
View
250
¥131.1
500
¥124.2
1,000
¥104.3
2,520
¥95.2
5,040
¥92.4
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
+2 images
EFM8BB10F8G-A-QFN20
Silicon Labs
1:
¥328.9
141 In Stock
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
141 In Stock
Alternative Packaging
1
¥328.9
10
¥209.3
25
¥186
100
¥154.3
250
View
250
¥134.5
500
¥127.4
1,000
¥107
2,520
¥97.7
5,040
¥94
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
+4 images
EFM8BB10F8G-A-SOIC16
Silicon Labs
1:
¥328.9
1,572 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
1,572 In Stock
Alternative Packaging
1
¥328.9
10
¥209.3
25
¥186
100
¥154.3
250
View
250
¥134.5
500
¥127.4
1,008
¥107
2,016
¥97.7
5,040
¥94
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 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F2G-A-QFN20R
Silicon Labs
1:
¥395.3
709 In Stock
18,000 On Order
Mouser Part # 634-8SB10F2GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Sleepy Bee MCU
709 In Stock
18,000 On Order
View Dates
Alternative Packaging
On Order:
6,000 Expected 7/30/2026
12,000 Expected 8/14/2026
Factory Lead-Time:
12 Weeks
1
¥395.3
10
¥252.5
25
¥225.9
100
¥186
1,500
¥117.3
3,000
View
250
¥161.6
500
¥153.1
1,000
¥128.6
3,000
¥112.8
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
1.8 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
+2 images
EFM8SB10F4G-A-QFN20
Silicon Labs
1:
¥390.3
23 In Stock
Mouser Part # 634-8SB10F4GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
23 In Stock
Alternative Packaging
1
¥390.3
10
¥250.8
25
¥224.2
100
¥184.4
250
View
250
¥174.4
500
¥152.6
1,000
¥132.9
2,100
¥123.7
4,200
¥120.9
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
4 kB
512 B
QFN-20
25 MHz
12 bit
16 I/O
1.8 V
3.6 V
SMD/SMT
8 bit
- 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:
¥445.1
31 In Stock
3,000 Expected 8/4/2026
Mouser Part # 634-8SB10F8GAQF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU
31 In Stock
3,000 Expected 8/4/2026
Alternative Packaging
1
¥445.1
10
¥289
25
¥262.4
100
¥220.9
1,500
¥147.8
3,000
View
250
¥207.6
500
¥181
1,000
¥157.5
3,000
¥144.5
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
8 kB
512 B
25 MHz
12 bit
17 I/O
1.8 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU
C8051F351-GMR
Silicon Labs
1:
¥2,961.6
97 In Stock
Mouser Part # 634-C8051F351-GMR
Silicon Labs
8-bit Microcontrollers - MCU 8KB,24ADC,28Pin MCU
97 In Stock
Alternative Packaging
1
¥2,961.6
10
¥2,250.7
25
¥2,157.6
100
¥1,901.8
250
View
1,500
¥1,538.1
250
¥1,807.2
500
¥1,690.9
1,000
¥1,626.1
1,500
¥1,538.1
3,000
Quote
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8051
8 kB
768 B
QFN-28
50 MHz
24 bit
17 I/O
2.7 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
C8051F351
Reel, Cut Tape
8-bit Microcontrollers - MCU USB-Flash-64k-ADC-QFN32 OTP available (T626-GM)
C8051F381-GMR
Silicon Labs
1:
¥1,456.7
90 In Stock
Mouser Part # 634-C8051F381-GMR
Silicon Labs
8-bit Microcontrollers - MCU USB-Flash-64k-ADC-QFN32 OTP available (T626-GM)
90 In Stock
Alternative Packaging
1
¥1,456.7
10
¥1,018.2
25
¥970
100
¥842.1
250
View
1,500
¥656.1
250
¥805.6
500
¥734.2
1,000
¥662.7
1,500
¥656.1
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8051
64 kB
4.25 kB
QFN-32
48 MHz
10 bit
25 I/O
2.7 V
5.25 V
SMD/SMT
8 bit
- 40 C
+ 85 C
C8051F381
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU
C8051F383-GM
Silicon Labs
1:
¥1,292.3
21 In Stock
Mouser Part # 634-C8051F383-GM
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB 8-bit MCU
21 In Stock
Alternative Packaging
1
¥1,292.3
10
¥950.1
25
¥883.7
100
¥777.3
250
View
250
¥737.5
500
¥661.1
1,000
¥558.1
2,500
¥553.1
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
8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN20
C8051F392-A-GMR
Silicon Labs
1:
¥910.2
72 In Stock
Mouser Part # 634-C8051F392-A-GMR
Silicon Labs
8-bit Microcontrollers - MCU 16kB/1kB RAM, 10b ADC, 10b 2xDAC, QFN20
72 In Stock
Alternative Packaging
1
¥910.2
10
¥626.2
25
¥583
100
¥513.2
250
View
1,500
¥365.4
250
¥486.7
500
¥436.8
1,000
¥373.7
1,500
¥365.4
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
8051
16 kB
1 kB
QFN-20
50 MHz
10 bit
17 I/O
1.8 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 105 C
C8051F392
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8kB/512B RAM, ADC, QFN20
+2 images
C8051F850-C-GMR
Silicon Labs
1:
¥651.1
559 In Stock
Mouser Part # 634-C8051F850-C-GMR
Silicon Labs
8-bit Microcontrollers - MCU 8kB/512B RAM, ADC, QFN20
559 In Stock
Alternative Packaging
1
¥651.1
10
¥430.2
25
¥392
100
¥332.2
1,500
¥237.5
3,000
View
250
¥315.6
500
¥282.4
1,000
¥245.8
3,000
¥234.2
Buy
Min.: 1 Mult.: 1
Reel :1,500
Details
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
C8051F850
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
+1 image
EFM8SB20F16G-B-QFN24
Silicon Labs
1:
¥495
364 In Stock
Mouser Part # 634-EFM8SBF16GBQFN24
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU
364 In Stock
Alternative Packaging
1
¥495
10
¥338.8
25
¥308.9
100
¥274.1
250
View
250
¥272.4
500
¥239.2
1,000
¥199.3
1,911
¥197.7
5,733
¥194.3
Buy
Min.: 1 Mult.: 1
Details
CIP-51 8051
16 kB
4.25 kB
QFN-24
25 MHz
10 bit
16 I/O
1.8 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8SB
Tube
8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU
+1 image
EFM8UB20F64G-B-QFN32R
Silicon Labs
1:
¥887
163 In Stock
Mouser Part # 634-EFM8UB64GBQFN32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU
163 In Stock
Alternative Packaging
1
¥887
10
¥586.3
25
¥534.8
100
¥453.5
1,500
¥323.9
3,000
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250
¥430.2
500
¥387
1,000
¥333.9
3,000
¥318.9
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Min.: 1 Mult.: 1
Reel :1,500
Details
CIP-51 8051
64 kB
4.25 kB
QFN-32
48 MHz
10 bit
25 I/O
3.3 V
3.3 V
SMD/SMT
8 bit
- 40 C
+ 85 C
EFM8UB2
Reel, Cut Tape
Japan