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EFM8 8-bit Microcontrollers - MCU

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Tradename = EFM8

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Part #

8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU

EFM8LB12F32E-C-QSOP24
Silicon Labs
1: $5.92
75In Stock
End of Life

Mfr. Part No.
EFM8LB12F32E-C-QSOP24

Mouser Part No
634-LB12F32ECQSOP24

End of Life

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 32 kB flash 2.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

75In Stock

$5.92

$3.92

$3.60

$3.10

View

Min.: 1
Mult.: 1

CIP-51 8051

32 kB

2.25 kB

QSOP-24

72 MHz

10 bit/12 bit/14 bit

21 I/O

2.2 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 105 C

EFM8LB1

Tube

8-bit Microcontrollers - MCU

EFM8LB11F32ES0-C-QFN24R
Silicon Labs
1: $5.34
1,499Expected 6/3/2026

Mfr. Part No.
EFM8LB11F32ES0-C-QFN24R

Mouser Part No
634-LB11F32ES0CFN24R

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

1,499Expected 6/3/2026

Cut Tape

$5.34

$3.61

$3.35

$2.91

Reel

$1.85

View

Min.: 1
Mult.: 1

Reel: 1,500

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

8-bit Microcontrollers - MCU 8051 25 MHz 16 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F16G-B-QFN24R
Silicon Labs
1,500: $1.43
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB20F16G-B-QFN24R

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

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.43

$1.40

Min.: 1,500
Mult.: 1,500

Reel: 1,500

CIP-51 8051

16 kB

4.25 kB

25 MHz

10 bit

16 I/O

1.8 V

3.6 V

SMD/SMT

8 bit

- 40 C

+ 85 C

EFM8SB

Reel

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F32G-B-QFP32R
Silicon Labs
500: $2.36
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB20F32G-B-QFP32R

Mouser Part No
634-EFM8SB32GBQFP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.36

$2.27

$2.22

$2.20

Min.: 500
Mult.: 500

Reel: 500

EFM8SB

Reel

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F64G-B-QFN32R
Silicon Labs
1,500: $2.25
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB20F64G-B-QFN32R

Mouser Part No
634-EFM8SB64GBQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.25

$2.24

Min.: 1,500
Mult.: 1,500

Reel: 1,500

EFM8SB

Reel

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F64G-B-QFP32R
Silicon Labs
500: $2.96
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB20F64G-B-QFP32R

Mouser Part No
634-EFM8SB64GBQFP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 64 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.96

$2.74

$2.71

$2.68

Min.: 500
Mult.: 500

Reel: 500

EFM8SB

Reel

8-bit Microcontrollers - MCU 8051 25 MHz 32 kB flash 4 kB RAM 8-bit Sleepy Bee MCU

EFM8SB20F32G-B-QFN24
Silicon Labs
1: $4.75
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB20F32G-B-QFN24

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

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$4.75

$3.04

$2.11

$1.92

View

Min.: 1
Mult.: 1

CIP-51 8051

32 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 32 kB flash 2 kB RAM 8-bit Universal Bee MCU

EFM8UB20F32G-B-QFP32R
Silicon Labs
500: $3.24
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8UB20F32G-B-QFP32R

Mouser Part No
634-EFM8UB32GBQFP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 32 kB flash 2 kB RAM 8-bit Universal Bee MCU

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$3.24

$2.95

$2.91

$2.88

Min.: 500
Mult.: 500

Reel: 500

EFM8UB2

Reel

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

EFM8UB20F64G-B-QFP32R
Silicon Labs
500: $3.53
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8UB20F64G-B-QFP32R

Mouser Part No
634-EFM8UB64GBQFP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 48 MHz 64 kB flash 4 kB RAM 8-bit Universal Bee MCU

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$3.53

$3.22

$3.17

Min.: 500
Mult.: 500

Reel: 500

EFM8UB2

Reel

8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU

EFM8SB10F8A-A-QFN20
Silicon Labs
2,100: $2.04
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8SB10F8A-A-QFN20

Mouser Part No
634-FM8SB10F8AAQFN20

Silicon Labs

8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Sleepy Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$2.04

Min.: 2,100
Mult.: 2,100

EFM8SB

AEC-Q100

Tube

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB10F16E-C-QFN24R
Silicon Labs
1,500: $1.50
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16E-C-QFN24R

Mouser Part No
634-LB10F16ECQFN24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.50

$1.47

Min.: 1,500
Mult.: 1,500

Reel: 1,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB10F16E-C-QFN32R
Silicon Labs
2,500: $1.49
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16E-C-QFN32R

Mouser Part No
634-LB10F16ECQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.49

$1.47

Min.: 2,500
Mult.: 2,500

Reel: 2,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB10F16E-C-QFP32R
Silicon Labs
1: $5.34
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16E-C-QFP32R

Mouser Part No
634-LB10F16ECQFP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Cut Tape

$5.34

$3.61

$3.35

$2.91

Reel

$2.38

View

Min.: 1
Mult.: 1

Reel: 500

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

Reel, Cut Tape

8-bit Microcontrollers - MCU

EFM8LB10F16ES0-C-QFN24R
Silicon Labs
1,500: $1.50
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES0-C-QFN24R

Mouser Part No
634-LB10F16ES0CFN24R

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.50

$1.47

Min.: 1,500
Mult.: 1,500

Reel: 1,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU

EFM8LB10F16ES0-C-QFN32R
Silicon Labs
2,500: $1.49
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES0-C-QFN32R

Mouser Part No
634-LB10F16ES0CFN32R

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.49

Min.: 2,500
Mult.: 2,500

Reel: 2,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU

EFM8LB10F16ES0-C-QFN24
Silicon Labs
2,520: $1.45
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES0-C-QFN24

Mouser Part No
634-LB10F16ES0CQFN24

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.45

$1.43

Min.: 2,520
Mult.: 2,520

CIP-51 8051

16 kB

1.25 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

EFM8LB10F16ES0-C-QFN32
Silicon Labs
2,450: $1.49
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES0-C-QFN32

Mouser Part No
634-LB10F16ES0CQFN32

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.49

Min.: 2,450
Mult.: 2,450

CIP-51 8051

16 kB

1.25 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

EFM8LB10F16ES1-C-QFN32R
Silicon Labs
2,500: $1.49
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES1-C-QFN32R

Mouser Part No
634-LB10F16ES1CFN32R

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.49

Min.: 2,500
Mult.: 2,500

Reel: 2,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU

EFM8LB10F16ES1-C-QFN24
Silicon Labs
2,520: $1.45
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES1-C-QFN24

Mouser Part No
634-LB10F16ES1CQFN24

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.45

$1.43

Min.: 2,520
Mult.: 2,520

CIP-51 8051

16 kB

1.25 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

EFM8LB10F16ES1-C-QFN32
Silicon Labs
2,450: $1.49
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB10F16ES1-C-QFN32

Mouser Part No
634-LB10F16ES1CQFN32

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.49

Min.: 2,450
Mult.: 2,450

CIP-51 8051

16 kB

1.25 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 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB11F16E-C-QFN24R
Silicon Labs
1,500: $1.61
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB11F16E-C-QFN24R

Mouser Part No
634-LB11F16ECQFN24R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.61

$1.60

Min.: 1,500
Mult.: 1,500

Reel: 1,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB11F16E-C-QFN32
Silicon Labs
2,450: $1.63
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB11F16E-C-QFN32

Mouser Part No
634-LB11F16ECQFN32

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

$1.63

$1.61

Min.: 2,450
Mult.: 2,450

CIP-51 8051

16 kB

1.25 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 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB11F16E-C-QFN32R
Silicon Labs
2,500: $1.63
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB11F16E-C-QFN32R

Mouser Part No
634-LB11F16ECQFN32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.63

$1.61

Min.: 2,500
Mult.: 2,500

Reel: 2,500

CIP-51 8051

16 kB

1.25 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

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

EFM8LB11F16E-C-QFP32R
Silicon Labs
500: $2.43
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB11F16E-C-QFP32R

Mouser Part No
634-LB11F16ECQFP32R

Silicon Labs

8-bit Microcontrollers - MCU 8051 75 MHz 16 kB flash 1.25 kB RAM 8-bit Laser Bee MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$2.43

$2.22

$2.18

$2.15

Min.: 500
Mult.: 500

Reel: 500

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

Reel

8-bit Microcontrollers - MCU

EFM8LB11F16ES0-C-QFN32R
Silicon Labs
2,500: $1.63
Non-Stocked Lead-Time 12 Weeks

Mfr. Part No.
EFM8LB11F16ES0-C-QFN32R

Mouser Part No
634-LB11F16ES0CFN32R

Silicon Labs

8-bit Microcontrollers - MCU

Learn More

Datasheet

Non-Stocked Lead-Time 12 Weeks

Reel

$1.63

$1.61

Min.: 2,500
Mult.: 2,500

Reel: 2,500

CIP-51 8051

16 kB

1.25 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

EFM8 8-bit Microcontrollers - MCU

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