8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64G-D-QFP32R
Silicon Labs
1:
S/11.95
9,640 In Stock
Mouser Part #
634-EF8BB31F64GDP32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
9,640 In Stock
Alternative Packaging
1
S/11.95
10
S/8.91
25
S/8.14
100
S/7.32
500
S/6.31
1,000
View
250
S/6.89
1,000
S/6.15
2,500
S/6.07
5,000
S/5.99
Buy
Min.: 1
Mult.: 1
Reel :
500
Details
CIP-51 8051
64 kB
4.35 kB
QFP-32
50 MHz
10 bit, 12 bit
28 I/O
2.2 V
3.6 V
SMD/SMT
8 bit
- 40 C
+ 85 C
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-QFN20R
Silicon Labs
1:
S/4.59
4,518 In Stock
Mouser Part #
634-8BB10F4GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 4 kB Flash 0.5 kB RAM 8-bit Busy Bee MCU
4,518 In Stock
Alternative Packaging
1
S/4.59
10
S/3.39
25
S/3.05
100
S/2.68
1,500
S/2.22
3,000
View
250
S/2.51
500
S/2.40
1,000
S/2.32
3,000
S/2.16
Buy
Min.: 1
Mult.: 1
Reel :
1,500
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
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB10F2I-A-QFN20
Silicon Labs
1:
S/3.74
3,158 In Stock
Mouser Part #
634-EFM8BB10F2IAFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
3,158 In Stock
Alternative Packaging
1
S/3.74
10
S/2.86
25
S/2.58
100
S/2.27
250
View
250
S/2.12
500
S/2.03
1,000
S/1.97
2,520
S/1.83
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
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
EFM8BB10F8I-A-SOIC16
Silicon Labs
1:
S/4.90
2,249 In Stock
Mouser Part #
634-8BB10F8I-ASOIC16
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
2,249 In Stock
Alternative Packaging
1
S/4.90
25
S/3.48
100
S/3.42
250
S/3.39
500
View
500
S/3.09
1,008
S/2.83
2,016
S/2.58
5,040
S/2.48
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
+ 125 C
EFM8BB1
Tube
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F2G-A-QFN20
Silicon Labs
1:
S/3.31
15,495 In Stock
Mouser Part #
634-8BB10F2GAQF20
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
15,495 In Stock
Alternative Packaging
1
S/3.31
10
S/2.61
25
S/2.34
100
S/2.04
250
View
250
S/1.90
500
S/1.82
1,000
S/1.75
2,520
S/1.59
5,040
S/1.56
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
+ 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-SOIC16R
Silicon Labs
1:
S/4.83
5,000 In Stock
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 In Stock
Alternative Packaging
1
S/4.83
10
S/3.49
25
S/3.15
100
S/2.79
2,500
S/2.32
5,000
View
250
S/2.61
500
S/2.51
1,000
S/2.40
5,000
S/2.13
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 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F32G-D-QFN24R
Silicon Labs
1:
S/11.72
8,212 In Stock
Mouser Part #
634-EF8BB31F32GDF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
8,212 In Stock
Alternative Packaging
1
S/11.72
10
S/7.63
25
S/7.01
100
S/5.99
250
View
1,500
S/4.71
250
S/5.64
500
S/4.94
1,000
S/4.71
1,500
S/4.71
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
+ 85 C
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB22F16G-C-QFN28R
Silicon Labs
1:
S/9.81
2,666 In Stock
Mouser Part #
634-8BB22F16GCQFN28R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
2,666 In Stock
Alternative Packaging
1
S/9.81
10
S/7.59
25
S/6.89
100
S/5.84
1,500
S/4.87
3,000
View
500
S/5.22
3,000
S/4.24
Buy
Min.: 1
Mult.: 1
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
+ 85 C
EFM8BB2
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
EFM8BB31F64I-D-4QFN24
Silicon Labs
1:
S/11.09
3,658 In Stock
Mouser Part #
634-EF8BB31F64ID4F24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
3,658 In Stock
Alternative Packaging
1
S/11.09
10
S/8.25
25
S/7.55
100
S/6.77
250
View
250
S/6.42
500
S/6.27
1,000
S/5.76
1,911
S/5.72
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
+ 125 C
Tube
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F8G-C-QFN20R
Silicon Labs
1:
S/3.58
9,875 In Stock
Mouser Part #
634-EFM851F8GCQFN20R
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
9,875 In Stock
Alternative Packaging
1
S/3.58
10
S/2.52
25
S/2.26
100
S/1.97
2,500
S/1.61
5,000
View
250
S/1.84
500
S/1.76
1,000
S/1.69
5,000
S/1.57
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 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB31F16G-D-QFN24R
Silicon Labs
1:
S/6.62
5,763 In Stock
Mouser Part #
634-EF8BB31F16GDF24R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
5,763 In Stock
Alternative Packaging
1
S/6.62
10
S/4.83
25
S/4.40
100
S/3.88
1,500
S/3.23
3,000
View
250
S/3.64
500
S/3.50
1,000
S/3.34
3,000
S/3.06
Buy
Min.: 1
Mult.: 1
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
+ 85 C
Reel, Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64G-D-QFP32
Silicon Labs
1:
S/11.68
5,695 In Stock
Mouser Part #
634-EF8BB31F64GDQP32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
5,695 In Stock
Alternative Packaging
1
S/11.68
10
S/8.91
25
S/8.14
100
S/7.32
250
View
250
S/6.89
500
S/6.73
1,000
S/6.42
2,500
S/5.99
5,000
S/5.92
Buy
Min.: 1
Mult.: 1
Details
CIP-51 8051
64 kB
4.35 kB
QFP-32
50 MHz
10 bit, 12 bit
28 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 25 GPIO BB5 8-bit MCU
EFM8BB52F16G-C-TSSOP28
Silicon Labs
1:
S/4.24
8,238 In Stock
Mouser Part #
634-EFM852F16GTSOP28
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 16 kB flash 1.28 kB RAM 25 GPIO BB5 8-bit MCU
8,238 In Stock
Alternative Packaging
1
S/4.24
10
S/3.04
25
S/2.74
100
S/2.41
200
View
200
S/2.25
600
S/2.15
1,000
S/2.08
2,600
S/1.99
5,000
S/1.94
Buy
Min.: 1
Mult.: 1
Details
16 kB
1.28 kB
TSSOP-28
25 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
EFM8BB31F16G-D-QFN24
Silicon Labs
1:
S/6.27
4,302 In Stock
Mouser Part #
634-EF8BB31F16GDQF24
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
4,302 In Stock
Alternative Packaging
1
S/6.27
10
S/4.83
25
S/4.40
100
S/3.88
250
View
250
S/3.64
500
S/3.50
1,000
S/3.46
2,520
S/3.17
5,040
S/3.16
Buy
Min.: 1
Mult.: 1
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
+ 85 C
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F32G-D-QFP32R
Silicon Labs
1:
S/9.73
502 In Stock
Mouser Part #
634-EF8BB31F32GDP32R
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
502 In Stock
Alternative Packaging
1
S/9.73
10
S/7.24
25
S/6.62
100
S/6.11
500
S/6.11
1,000
View
1,000
S/5.49
2,500
S/5.45
5,000
S/5.37
Buy
Min.: 1
Mult.: 1
Reel :
500
Details
CIP-51 8051
32 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
+ 85 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-QFP32
Silicon Labs
1:
S/8.99
16 In Stock
Mouser Part #
634-EF8BB31F16IDQP32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
16 In Stock
Alternative Packaging
1
S/8.99
10
S/6.66
25
S/6.07
100
S/5.41
250
View
250
S/5.14
500
S/4.98
2,500
S/4.90
5,000
S/4.83
Buy
Min.: 1
Mult.: 1
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
Tray
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
EFM8BB51F8I-C-TSSOP20
Silicon Labs
1:
S/3.89
166 In Stock
Mouser Part #
634-EFM851F8ICTSOP20
Silicon Labs
8-bit Microcontrollers - MCU 5 Volt 8051 50 Mhz 8 kB flash 1.28 kB RAM 16 GPIO BB5 8-bit MCU
166 In Stock
Alternative Packaging
1
S/3.89
10
S/2.78
25
S/2.67
200
S/2.26
600
View
600
S/2.22
1,000
S/2.19
2,600
S/2.09
5,000
S/2.04
Buy
Min.: 1
Mult.: 1
Details
8 kB
1.28 kB
TSSOP-20
16 I/O
1.8 V
5.5 V
SMD/SMT
- 40 C
+ 125 C
Cut Tape
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F32G-D-QFN32
Silicon Labs
1:
S/8.56
457 In Stock
Mouser Part #
634-EF8BB31F32GDQN32
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 32 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
457 In Stock
Alternative Packaging
1
S/8.56
10
S/6.31
25
S/5.76
100
S/5.14
250
View
250
S/4.83
500
S/4.67
2,450
S/4.63
4,900
S/4.52
Buy
Min.: 1
Mult.: 1
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
+ 85 C
Tray
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
+2 images
EFM8BB10F2G-A-QFN20R
Silicon Labs
1:
S/3.54
15,601 In Stock
Mouser Part #
634-8BB10F2GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 2 kB flash 0.25 kB RAM 8-bit Busy Bee MCU
15,601 In Stock
Alternative Packaging
1
S/3.54
10
S/2.97
25
S/2.57
100
S/2.41
1,500
S/1.77
3,000
View
500
S/2.10
1,000
S/1.94
3,000
S/1.62
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
+ 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
+2 images
EFM8BB10F8G-A-QFN20R
Silicon Labs
1:
S/3.58
11,606 In Stock
73,500 Expected 10/2/2026
Mouser Part #
634-8BB10F8GAQF20R
Silicon Labs
8-bit Microcontrollers - MCU 8051 25 MHz 8 kB flash 0.5 kB RAM 8-bit Busy Bee MCU
11,606 In Stock
73,500 Expected 10/2/2026
Alternative Packaging
1
S/3.58
10
S/3.03
100
S/2.49
250
S/2.33
500
View
1,500
S/1.95
500
S/2.06
1,000
S/2.00
1,500
S/1.95
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
+ 85 C
EFM8BB1
Reel, Cut Tape, MouseReel
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
+1 image
EFM8BB21F16I-C-QSOP24
Silicon Labs
1:
S/7.43
3,126 In Stock
End of Life
Mouser Part #
634-8BB21F16ICQSOP24
End of Life
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
3,126 In Stock
Alternative Packaging
1
S/7.43
10
S/6.31
100
S/5.53
250
S/5.22
500
View
500
S/4.71
5,880
S/4.01
Buy
Min.: 1
Mult.: 1
Details
CIP-51 8051
16 kB
2.3 kB
QSOP-24
50 MHz
12 bit
21 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 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F64I-D-5QFN32
Silicon Labs
1:
S/17.52
1,358 In Stock
End of Life
Mouser Part #
634-EF8BB31F64ID5F32
End of Life
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 64 kB flash 4.25 kB RAM 8-bit Busy Bee MCU
1,358 In Stock
Alternative Packaging
1
S/17.52
10
S/11.60
25
S/10.59
100
S/8.99
250
View
250
S/8.52
500
S/7.67
1,000
S/7.12
2,500
S/6.62
4,599
S/6.58
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
Tube
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB21F16I-C-QFN20
Silicon Labs
1:
S/6.81
3,268 In Stock
Mouser Part #
634-8BB21F16I-CQFN20
Silicon Labs
8-bit Microcontrollers - MCU 8051 50 MHz 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
3,268 In Stock
Alternative Packaging
1
S/6.81
10
S/5.76
25
S/5.06
100
S/4.71
250
View
250
S/4.59
500
S/3.97
1,000
S/3.36
2,520
S/3.14
Buy
Min.: 1
Mult.: 1
Details
CIP-51 8051
16 kB
2.3 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
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 In Stock
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 In Stock
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 16 kB flash 2.25 kB RAM 8-bit Busy Bee MCU
EFM8BB31F16G-D-QFN32R
Silicon Labs
1:
S/7.24
4,102 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
4,102 In Stock
Alternative Packaging
1
S/7.24
10
S/5.99
25
S/5.18
100
S/4.87
2,500
S/3.68
5,000
View
500
S/4.28
1,000
S/4.01
5,000
S/3.58
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