ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
STM32F217VET6
STMicroelectronics
1:
88,40 kr.
216 In Stock
Mouser Part No
511-STM32F217VET6
STMicroelectronics
ARM Microcontrollers - MCU 32BIT ARM Cortex M3 Connectivity 512kB
216 In Stock
Alternative Packaging
1
88,40 kr.
10
65,28 kr.
25
60,28 kr.
250
56,17 kr.
540
View
540
54,76 kr.
1.080
53,79 kr.
2.700
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F217VE
SMD/SMT
LQFP-100
ARM Cortex M3
512 kB
32 bit
12 bit
120 MHz
82 I/O
128 kB
1.8 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F301C8T6
STMicroelectronics
1:
19,47 kr.
1.745 In Stock
Mouser Part No
511-STM32F301C8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
1.745 In Stock
Alternative Packaging
1
19,47 kr.
10
18,05 kr.
25
17,68 kr.
100
17,31 kr.
1.500
17,23 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
64 kB
32 bit
12 bit
72 MHz
37 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F301R8T6
STMicroelectronics
1:
35,21 kr.
949 In Stock
Mouser Part No
511-STM32F301R8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
949 In Stock
1
35,21 kr.
10
26,93 kr.
25
24,92 kr.
100
22,45 kr.
250
View
250
21,71 kr.
500
21,11 kr.
960
19,69 kr.
2.880
19,62 kr.
5.760
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
64 kB
32 bit
12 bit
72 MHz
51 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F302C8T6
STMicroelectronics
1:
29,24 kr.
1.667 In Stock
Mouser Part No
511-STM32F302C8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
1.667 In Stock
Alternative Packaging
1
29,24 kr.
10
22,38 kr.
25
20,66 kr.
100
18,72 kr.
250
18,50 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
64 kB
32 bit
12 bit
72 MHz
37 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU
STM32F302CBT6
STMicroelectronics
1:
38,79 kr.
421 In Stock
6.000 Expected 22/04/2026
Mouser Part No
511-STM32F302CBT6
STMicroelectronics
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU
421 In Stock
6.000 Expected 22/04/2026
Alternative Packaging
1
38,79 kr.
10
29,77 kr.
25
27,53 kr.
100
24,99 kr.
250
View
250
23,20 kr.
500
22,38 kr.
1.000
22,08 kr.
1.500
21,11 kr.
4.500
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
128 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
37 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F302K8U6
STMicroelectronics
1:
31,41 kr.
1.473 In Stock
2.940 Expected 17/03/2026
Mouser Part No
511-STM32F302K8U6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
1.473 In Stock
2.940 Expected 17/03/2026
Alternative Packaging
1
31,41 kr.
10
24,17 kr.
25
22,38 kr.
100
20,74 kr.
250
View
250
18,80 kr.
500
18,13 kr.
1.000
17,75 kr.
2.940
17,61 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
UFQFPN-32
ARM Cortex M4
64 kB
32 bit
6 bit/8 bit/10 bit/12 bit
72 MHz
24 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 128 Kbytes of Flash
STM32F302RBT6TR
STMicroelectronics
1:
40,81 kr.
2.743 In Stock
Mouser Part No
511-STM32F302RBT6TR
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 128 Kbytes of Flash
2.743 In Stock
Alternative Packaging
1
40,81 kr.
10
31,41 kr.
25
29,09 kr.
100
26,41 kr.
1.000
23,80 kr.
2.000
View
250
25,21 kr.
500
24,47 kr.
2.000
22,68 kr.
5.000
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
128 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
51 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 256kB MCU FPU
STM32F302RCT6
STMicroelectronics
1:
42,60 kr.
512 In Stock
Mouser Part No
511-STM32F302RCT6
STMicroelectronics
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 256kB MCU FPU
512 In Stock
Alternative Packaging
1
42,60 kr.
10
35,51 kr.
25
32,67 kr.
100
29,39 kr.
250
View
250
28,57 kr.
500
27,53 kr.
960
26,41 kr.
2.880
26,33 kr.
5.760
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
256 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
51 I/O
40 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Analog & DSP w/ FPU M4 256kB 72MHz
STM32F302RCT6TR
STMicroelectronics
1:
46,70 kr.
3.095 In Stock
Mouser Part No
511-STM32F302RCT6TR
STMicroelectronics
ARM Microcontrollers - MCU Analog & DSP w/ FPU M4 256kB 72MHz
3.095 In Stock
Alternative Packaging
1
46,70 kr.
10
36,11 kr.
25
33,42 kr.
100
30,51 kr.
250
View
1.000
25,89 kr.
250
29,09 kr.
500
28,27 kr.
1.000
25,89 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
256 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
51 I/O
40 kB
2 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F303C8T6
STMicroelectronics
1:
38,27 kr.
481 In Stock
Mouser Part No
511-STM32F303C8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
481 In Stock
1
38,27 kr.
10
29,39 kr.
25
27,15 kr.
100
24,69 kr.
250
View
250
23,57 kr.
500
22,83 kr.
1.000
22,23 kr.
1.500
21,56 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
64 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
38 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU
STM32F303CBT6
STMicroelectronics
1:
40,88 kr.
1.466 In Stock
1.500 Expected 10/04/2026
Mouser Part No
511-STM32F303CBT6
STMicroelectronics
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU
1.466 In Stock
1.500 Expected 10/04/2026
Alternative Packaging
1
40,88 kr.
10
32,23 kr.
25
29,84 kr.
100
27,15 kr.
250
View
250
25,89 kr.
500
24,54 kr.
1.500
23,72 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
128 kB
32 bit
4 x 6 bit/8 bit/10 bit/12 bit
72 MHz
37 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Analog and DSP FPU ARM Cortex-M4 MCU
STM32F303CBT6TR
STMicroelectronics
1:
41,93 kr.
1.415 In Stock
Mouser Part No
511-STM32F303CBT6TR
STMicroelectronics
ARM Microcontrollers - MCU Analog and DSP FPU ARM Cortex-M4 MCU
1.415 In Stock
Alternative Packaging
1
41,93 kr.
10
32,23 kr.
25
29,84 kr.
100
27,15 kr.
250
View
2.400
23,80 kr.
250
25,89 kr.
500
25,14 kr.
1.000
23,87 kr.
2.400
23,80 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
128 kB
32 bit
4 x 6 bit/8 bit/10 bit/12 bit
72 MHz
37 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Reel, Cut Tape, MouseReel
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 128 Kbytes of Flash
STM32F303CBT7
STMicroelectronics
1:
44,54 kr.
795 In Stock
Mouser Part No
511-STM32F303CBT7
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 128 Kbytes of Flash
795 In Stock
Alternative Packaging
1
44,54 kr.
10
34,32 kr.
25
31,78 kr.
100
29,02 kr.
250
View
250
27,68 kr.
500
26,78 kr.
1.000
26,18 kr.
1.500
25,44 kr.
4.500
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
128 kB
32 bit
4 x 6 bit/8 bit/10 bit/12 bit
72 MHz
37 I/O
40 kB
2 V
3.6 V
- 40 C
+ 105 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F303K8T6
STMicroelectronics
1:
36,33 kr.
1.395 In Stock
Mouser Part No
511-STM32F303K8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
1.395 In Stock
Alternative Packaging
1
36,33 kr.
10
27,75 kr.
25
25,66 kr.
100
23,35 kr.
250
View
250
22,23 kr.
500
21,56 kr.
1.000
21,41 kr.
1.500
20,37 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-32
ARM Cortex M4
64 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
34 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F303R8T6
STMicroelectronics
1:
41,48 kr.
404 In Stock
Mouser Part No
511-STM32F303R8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
404 In Stock
1
41,48 kr.
10
31,85 kr.
25
29,54 kr.
100
26,18 kr.
250
View
250
25,36 kr.
500
24,62 kr.
960
23,50 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
64 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
51 I/O
16 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU
STM32F303RBT6
STMicroelectronics
1:
44,98 kr.
538 In Stock
Mouser Part No
511-STM32F303RBT6
STMicroelectronics
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 128kB MCU FPU
538 In Stock
1
44,98 kr.
10
34,69 kr.
25
32,15 kr.
100
28,57 kr.
250
View
250
27,68 kr.
500
27,38 kr.
960
26,26 kr.
2.880
26,11 kr.
5.760
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
128 kB
32 bit
4 x 6 bit/8 bit/10 bit/12 bit
72 MHz
52 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 128 Kbytes of Flash
STM32F303RBT7
STMicroelectronics
1:
47,82 kr.
451 In Stock
Mouser Part No
511-STM32F303RBT7
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 128 Kbytes of Flash
451 In Stock
Alternative Packaging
1
47,82 kr.
10
36,93 kr.
25
34,24 kr.
100
30,51 kr.
250
View
250
29,54 kr.
500
28,65 kr.
960
27,45 kr.
2.880
27,23 kr.
5.760
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
128 kB
32 bit
4 x 6 bit/8 bit/10 bit/12 bit
72 MHz
52 I/O
32 kB
2 V
3.6 V
- 40 C
+ 105 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Flash
STM32F303RCT7
STMicroelectronics
1:
48,64 kr.
708 In Stock
Mouser Part No
511-STM32F303RCT7
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 256 Kbytes of Flash
708 In Stock
Alternative Packaging
1
48,64 kr.
10
39,02 kr.
25
36,55 kr.
100
33,42 kr.
960
View
960
31,71 kr.
2.880
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
256 kB
32 bit
4 x 6 bit/8 bit/10 bit/12 bit
72 MHz
52 I/O
40 kB
2 V
3.6 V
- 40 C
+ 105 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 32 Kbytes of Flash 7
STM32F334C6T6
STMicroelectronics
1:
39,46 kr.
858 In Stock
Mouser Part No
511-STM32F334C6T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 32 Kbytes of Flash 7
858 In Stock
Alternative Packaging
1
39,46 kr.
10
30,29 kr.
25
27,98 kr.
100
25,44 kr.
250
View
250
24,25 kr.
500
23,57 kr.
1.000
22,98 kr.
1.500
21,93 kr.
4.500
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
32 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
37 I/O
12 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 16 Kbytes of Flash 7
STM32F334K4T6
STMicroelectronics
1:
35,58 kr.
1.189 In Stock
Mouser Part No
511-STM32F334K4T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 16 Kbytes of Flash 7
1.189 In Stock
1
35,58 kr.
10
27,30 kr.
25
25,14 kr.
100
22,83 kr.
250
View
250
21,78 kr.
500
21,11 kr.
1.000
20,59 kr.
1.500
19,92 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-32
ARM Cortex M4
16 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
35 I/O
12 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F334K8T6
STMicroelectronics
1:
38,79 kr.
1.018 In Stock
Mouser Part No
511-STM32F334K8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
1.018 In Stock
Alternative Packaging
1
38,79 kr.
10
29,77 kr.
25
27,53 kr.
250
23,87 kr.
500
View
500
23,13 kr.
1.000
22,60 kr.
1.500
21,86 kr.
4.500
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-32
ARM Cortex M4
64 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
35 I/O
12 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
STM32F334R8T6
STMicroelectronics
1:
43,64 kr.
502 In Stock
Mouser Part No
511-STM32F334R8T6
STMicroelectronics
ARM Microcontrollers - MCU Mainstream Mixed signals MCUs Arm Cortex-M4 core DSP & FPU, 64 Kbytes of Flash 7
502 In Stock
1
43,64 kr.
10
33,64 kr.
25
31,11 kr.
100
27,68 kr.
250
View
250
26,78 kr.
500
25,96 kr.
960
25,44 kr.
2.880
24,84 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
64 kB
32 bit
2 x 6 bit/8 bit/10 bit/12 bit
72 MHz
51 I/O
12 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 256kB MCU FPU
STM32F373CCT6
STMicroelectronics
1:
50,06 kr.
806 In Stock
Mouser Part No
511-STM32F373CCT6
STMicroelectronics
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 256kB MCU FPU
806 In Stock
1
50,06 kr.
10
38,72 kr.
25
35,96 kr.
100
32,75 kr.
250
View
250
31,33 kr.
500
30,44 kr.
1.000
29,62 kr.
1.500
28,87 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-48
ARM Cortex M4
256 kB
32 bit
12 bit, 3 x 16 bit
72 MHz
56 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 256kB MCU FPU
STM32F373RCT6
STMicroelectronics
1:
52,59 kr.
1.055 In Stock
Mouser Part No
511-STM32F373RCT6
STMicroelectronics
ARM Microcontrollers - MCU 32-Bit ARM Cortex M4 72MHz 256kB MCU FPU
1.055 In Stock
1
52,59 kr.
10
40,81 kr.
25
37,82 kr.
100
33,72 kr.
250
View
250
32,75 kr.
500
31,85 kr.
960
31,18 kr.
2.880
30,96 kr.
5.760
Quote
Buy
Min.: 1
Mult.: 1
Details
STM32F3
SMD/SMT
LQFP-64
ARM Cortex M4
256 kB
32 bit
12 bit, 3 x 16 bit
72 MHz
80 I/O
32 kB
2 V
3.6 V
- 40 C
+ 85 C
Tray
ARM Microcontrollers - MCU Cost effective DSP FPU ARM CortexM4 MCU
STM32F401CCU6
STMicroelectronics
1:
32,67 kr.
1.723 In Stock
3.120 Expected 09/03/2026
Mouser Part No
511-STM32F401CCU6
STMicroelectronics
ARM Microcontrollers - MCU Cost effective DSP FPU ARM CortexM4 MCU
1.723 In Stock
3.120 Expected 09/03/2026
1
32,67 kr.
10
24,99 kr.
25
22,98 kr.
100
20,89 kr.
250
View
250
19,17 kr.
500
18,58 kr.
1.000
17,90 kr.
2.500
17,38 kr.
Buy
Min.: 1
Mult.: 1
Details
STM32F401CC
SMD/SMT
UFQFPN-48
ARM Cortex M4
256 kB
32 bit
12 bit
84 MHz
36 I/O
64 kB
1.7 V
3.6 V
- 40 C
+ 85 C
Tray