11AA040-I/MS
Microchip Technology
IC EEPROM 4KBIT SGL WIRE 8MSOP
Existencias disponibles82350 pcs
11AA040-I/MS.pdf
4Kbit
100 kHz
-
EEPROM
5ms
Single Wire
11AA040
512 x 8
Tube
EEPROM
-
-40°C ~ 85°C (TA)
Surface Mount
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-MSOP
1.8V ~ 5.5V
Non-Volatile
RFQ
CY15B108QI-20LPXC
Infineon Technologies
IC FRAM 8MBIT SPI 20MHZ 8GQFN
Existencias disponibles47248 pcs
CY15B108QI-20LPXC.pdf
8Mbit
20 MHz
-
FRAM
-
SPI
CY15B108
1M x 8
Tray
FRAM (Ferroelectric RAM)
Excelon™-LP,F-RAM™
0°C ~ 70°C (TA)
Surface Mount
8-UQFN
8-GQFN (3.23x3.28)
1.8V ~ 3.6V
Non-Volatile
RFQ
S26KS128SDABHV030
Infineon Technologies
IC FLASH 128MBIT PAR 24FBGA
Existencias disponibles37269 pcs
S26KS128SDABHV030.pdf
128Mbit
100 MHz
96 ns
FLASH
-
Parallel
S26KS128
16M x 8
Tray
FLASH - NOR
HyperFlash™ KS
-40°C ~ 125°C (TA)
Surface Mount
24-VBGA
24-FBGA (6x8)
1.7V ~ 1.95V
Non-Volatile
RFQ
71256SA25TPG
Renesas Electronics America Inc
IC SRAM 256KBIT PARALLEL 28DIP
Existencias disponibles42535 pcs
71256SA25TPG.pdf
256Kbit
-
25 ns
SRAM
25ns
Parallel
71256SA
32K x 8
Tube
SRAM - Asynchronous
-
0°C ~ 70°C (TA)
Through Hole
28-DIP (0.300", 7.62mm)
28-PDIP
4.5V ~ 5.5V
Volatile
RFQ
S25FS064SAGBHI020
Infineon Technologies
IC FLASH 64MBIT SPI/QUAD 24BGA
Existencias disponibles28741 pcs
S25FS064SAGBHI020.pdf
64Mbit
133 MHz
-
FLASH
-
SPI - Quad I/O, QPI
S25FS064
8M x 8
Tray
FLASH - NOR
FS-S
-40°C ~ 85°C (TA)
Surface Mount
24-TBGA
24-BGA (8x6)
1.7V ~ 2V
Non-Volatile
RFQ
AT25FF161A-SHN-T
Adesto Technologies
IC FLASH 16MBIT SPI/QUAD 8SOIC
Existencias disponibles39984 pcs
AT25FF161A-SHN-T.pdf
16Mbit
133 MHz
-
FLASH
12µs, 8ms
SPI - Quad I/O
AT25FF161
2M x 8
Tape & Reel (TR)
FLASH - NOR
-
-40°C ~ 85°C (TA)
Surface Mount
8-SOIC (0.209", 5.30mm Width)
8-SOIC
1.65V ~ 3.6V
Non-Volatile
RFQ
CY7C1460KV25-200BZI
Infineon Technologies
IC SRAM 36MBIT PARALLEL 165FBGA
Existencias disponibles35401 pcs
CY7C1460KV25-200BZI.pdf
36Mbit
200 MHz
3.2 ns
SRAM
-
Parallel
CY7C1460
1M x 36
Tray
SRAM - Synchronous, SDR
NoBL™
-40°C ~ 85°C (TA)
Surface Mount
165-LBGA
165-FBGA (15x17)
2.375V ~ 2.625V
Volatile
RFQ
FT24C512A-EDR
Fremont Micro Devices Ltd
IC EEPROM 512KBIT I2C 1MHZ 8DIP
Existencias disponibles14105 pcs
512Kbit
1 MHz
900 ns
EEPROM
5ms
I²C
FT24C512
64K x 8
Tube
EEPROM
-
-40°C ~ 85°C
Through Hole
8-DIP (0.300", 7.62mm)
8-DIP
1.8V ~ 5.5V
Non-Volatile
RFQ
CY7C1041CV33-10BAXET
Infineon Technologies
IC SRAM 4MBIT PARALLEL 48FBGA
Existencias disponibles7925 pcs
CY7C1041CV33-10BAXET.pdf
4Mbit
-
10 ns
SRAM
10ns
Parallel
CY7C1041
256K x 16
Tape & Reel (TR)
SRAM - Asynchronous
-
-40°C ~ 125°C (TA)
Surface Mount
48-TFBGA
48-FBGA (7x8.5)
3V ~ 3.6V
Volatile
RFQ
CAT24C64WI-G
onsemi
IC EEPROM 64KBIT I2C 1MHZ 8SOIC
Existencias disponibles107600 pcs
CAT24C64WI-G.pdf
64Kbit
1 MHz
400 ns
EEPROM
5ms
I²C
CAT24C64
8K x 8
Tube
EEPROM
-
-40°C ~ 85°C (TA)
Surface Mount
8-SOIC (0.154', 3.90mm Width)
8-SOIC
1.7V ~ 5.5V
Non-Volatile
RFQ
W9816G6JB-5
Winbond Electronics
IC DRAM 16MBIT LVTTL 60VFBGA
Existencias disponibles33241 pcs
W9816G6JB-5.pdf
16Mbit
200 MHz
4.5 ns
DRAM
-
LVTTL
W9816G6
1M x 16
Tray
SDRAM
-
0°C ~ 70°C (TA)
Surface Mount
60-TFBGA
60-VFBGA (6.4x10.1)
3V ~ 3.6V
Volatile
RFQ
CY14B101LA-SZ45XI
Infineon Technologies
IC NVSRAM 1MBIT PARALLEL 32SOIC
Existencias disponibles13530 pcs
CY14B101LA-SZ45XI.pdf
1Mbit
-
45 ns
NVSRAM
45ns
Parallel
CY14B101
128K x 8
Tube
NVSRAM (Non-Volatile SRAM)
-
-40°C ~ 85°C (TA)
Surface Mount
32-SOIC (0.295', 7.50mm Width)
32-SOIC
2.7V ~ 3.6V
Non-Volatile
RFQ
IDT71T75902S80PFI
Renesas Electronics America Inc
IC SRAM 18MBIT PARALLEL 100TQFP
Existencias disponibles6045 pcs
IDT71T75902S80PFI.pdf
18Mbit
-
8 ns
SRAM
-
Parallel
IDT71T75
1M x 18
Tray
SRAM - Synchronous, SDR (ZBT)
-
-40°C ~ 85°C (TA)
Surface Mount
100-LQFP
100-TQFP (14x14)
2.375V ~ 2.625V
Volatile
RFQ
71421SA35PF8
Renesas Electronics America Inc
IC SRAM 16KBIT PARALLEL 64TQFP
Existencias disponibles11802 pcs
71421SA35PF8.pdf
16Kbit
-
35 ns
SRAM
35ns
Parallel
71421SA
2K x 8
Tape & Reel (TR)
SRAM - Dual Port, Asynchronous
-
0°C ~ 70°C (TA)
Surface Mount
64-LQFP
64-TQFP (14x14)
4.5V ~ 5.5V
Volatile
RFQ
IS42S16800E-7TL-TR
ISSI, Integrated Silicon Solution Inc
IC DRAM 128MBIT PAR 54TSOP II
Existencias disponibles7460 pcs
IS42S16800E-7TL-TR.pdf
128Mbit
143 MHz
5.4 ns
DRAM
-
Parallel
IS42S16800
8M x 16
Tape & Reel (TR)
SDRAM
-
0°C ~ 70°C (TA)
Surface Mount
54-TSOP (0.400', 10.16mm Width)
54-TSOP II
3V ~ 3.6V
Volatile
RFQ
AT25DF256-XMHN-B
Adesto Technologies
IC FLASH 256KBIT SPI 8TSSOP
Existencias disponibles41792 pcs
AT25DF256-XMHN-B.pdf
256Kbit
104 MHz
-
FLASH
8µs, 2.5ms
SPI
AT25DF256
32K x 8
Tube
FLASH
-
-40°C ~ 85°C (TC)
Surface Mount
8-TSSOP (0.173', 4.40mm Width)
8-TSSOP
1.65V ~ 3.6V
Non-Volatile
RFQ
W74M64FVSSIQ
Winbond Electronics
IC FLASH 64MBIT SPI/QUAD 8SOIC
Existencias disponibles9673 pcs
W74M64FVSSIQ.pdf
64Mbit
80 MHz
-
FLASH
-
SPI - Quad I/O
W74M64
8M x 8
Tube
FLASH - NAND
SpiFlash®
-40°C ~ 85°C (TA)
Surface Mount
8-SOIC (0.209", 5.30mm Width)
8-SOIC
2.7V ~ 3.6V
Non-Volatile
RFQ
MT48LC2M32B2P-5:G TR
Micron Technology Inc.
IC DRAM 64MBIT PAR 86TSOP II
Existencias disponibles13542 pcs
MT48LC2M32B2P-5:G TR.pdf
64Mbit
200 MHz
4.5 ns
DRAM
-
Parallel
MT48LC2M32B2
2M x 32
Tape & Reel (TR)
SDRAM
-
0°C ~ 70°C (TA)
Surface Mount
86-TFSOP (0.400', 10.16mm Width)
86-TSOP II
3V ~ 3.6V
Volatile
RFQ
AT49F002-12JC
Microchip Technology
IC FLASH 2MBIT PARALLEL 32PLCC
Existencias disponibles14408 pcs
AT49F002-12JC.pdf
2Mbit
-
120 ns
FLASH
50µs
Parallel
AT49F002
256K x 8
Tube
FLASH
-
0°C ~ 70°C (TC)
Surface Mount
32-LCC (J-Lead)
32-PLCC (13.97x11.43)
4.5V ~ 5.5V
Non-Volatile
RFQ
24AA64T-E/MNYVAO
Microchip Technology
IC EEPROM 64KBIT I2C 8TDFN
Existencias disponibles10224 pcs
24AA64T-E/MNYVAO.pdf
64Kbit
400 kHz
900 ns
EEPROM
5ms
I²C
24AA64
8K x 8
Tape & Reel (TR)
EEPROM
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
8-WFDFN Exposed Pad
8-TDFN (2x3)
1.7V ~ 5.5V
Non-Volatile
RFQ
CY7C1041DV33-10BVJXIT
Infineon Technologies
IC SRAM 4MBIT PARALLEL 48VFBGA
Existencias disponibles9652 pcs
CY7C1041DV33-10BVJXIT.pdf
4Mbit
-
10 ns
SRAM
10ns
Parallel
CY7C1041
256K x 16
Tape & Reel (TR)
SRAM - Asynchronous
-
-40°C ~ 85°C (TA)
Surface Mount
48-VFBGA
48-VFBGA (6x8)
3V ~ 3.6V
Volatile
RFQ
CY7C1325S-100AXC
Infineon Technologies
IC SRAM 4.5MBIT PARALLEL 100TQFP
Existencias disponibles30517 pcs
CY7C1325S-100AXC.pdf
4.5Mbit
100 MHz
8 ns
SRAM
-
Parallel
CY7C1325
256K x 18
Tray
SRAM - Synchronous, SDR
-
0°C ~ 70°C (TA)
Surface Mount
100-LQFP
100-TQFP (14x14)
3.15V ~ 3.6V
Volatile
RFQ
W9812G2KB-6I
Winbond Electronics
IC DRAM 128MBIT PAR 90TFBGA
Existencias disponibles30052 pcs
W9812G2KB-6I.pdf
128Mbit
166 MHz
5 ns
DRAM
-
Parallel
W9812G2
4M x 32
Tray
SDRAM
-
-40°C ~ 85°C (TA)
Surface Mount
90-TFBGA
90-TFBGA (8x13)
3V ~ 3.6V
Volatile
RFQ
DS1245AB-70+
Analog Devices Inc./Maxim Integrated
IC NVSRAM 1MBIT PARALLEL 32EDIP
Existencias disponibles49171 pcs
DS1245AB-70+.pdf
1Mbit
-
70 ns
NVSRAM
70ns
Parallel
DS1245AB
128K x 8
Tube
NVSRAM (Non-Volatile SRAM)
-
0°C ~ 70°C (TA)
Through Hole
32-DIP Module (0.600", 15.24mm)
32-EDIP
4.75V ~ 5.25V
Non-Volatile
RFQ
CY7C199CN-25PXC
Infineon Technologies
IC SRAM 256KBIT PARALLEL 28DIP
Existencias disponibles10559 pcs
CY7C199CN-25PXC.pdf
256Kbit
-
25 ns
SRAM
25ns
Parallel
CY7C199
32K x 8
Tube
SRAM - Asynchronous
-
0°C ~ 70°C (TA)
Through Hole
28-DIP (0.300", 7.62mm)
28-PDIP
4.5V ~ 5.5V
Volatile
RFQ
BR25H040FVM-2CTR
Rohm Semiconductor
IC EEPROM 4KBIT SPI 10MHZ 8MSOP
Existencias disponibles43276 pcs
BR25H040FVM-2CTR.pdf
4Kbit
10 MHz
-
EEPROM
4ms
SPI
BR25H040
512 x 8
Tape & Reel (TR)
EEPROM
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
8-VSSOP, 8-MSOP (0.110", 2.80mm Width)
8-MSOP
2.5V ~ 5.5V
Non-Volatile
RFQ
IS42S32800B-7T-TR
ISSI, Integrated Silicon Solution Inc
IC DRAM 256MBIT PAR 86TSOP II
Existencias disponibles13371 pcs
IS42S32800B-7T-TR.pdf
256Mbit
143 MHz
5.5 ns
DRAM
-
Parallel
IS42S32800
8M x 32
Tape & Reel (TR)
SDRAM
-
0°C ~ 70°C (TA)
Surface Mount
86-TFSOP (0.400", 10.16mm Width)
86-TSOP II
3V ~ 3.6V
Volatile
RFQ
AT25DF512C-MAHNGU-T
Adesto Technologies
IC FLASH 512KBIT SPI 8UDFN
Existencias disponibles6039 pcs
AT25DF512C-MAHNGU-T.pdf
512Kbit
104 MHz
-
FLASH
8µs, 3.5ms
SPI
AT25DF512
64K x 8
Tape & Reel (TR)
FLASH
-
-40°C ~ 85°C (TC)
Surface Mount
8-UFDFN Exposed Pad
8-UDFN (2x3)
1.65V ~ 3.6V
Non-Volatile
RFQ
7028L20PFGI
Renesas Electronics America Inc
IC SRAM 1MBIT PARALLEL 100TQFP
Existencias disponibles8467 pcs
7028L20PFGI.pdf
1Mbit
-
20 ns
SRAM
20ns
Parallel
7028L20
64K x 16
Tray
SRAM - Dual Port, Asynchronous
-
-40°C ~ 85°C (TA)
Surface Mount
100-LQFP
100-TQFP (14x14)
4.5V ~ 5.5V
Volatile
RFQ
IS49NLC36160-25B
ISSI, Integrated Silicon Solution Inc
IC DRAM 576MBIT PAR 144FCBGA
Existencias disponibles14704 pcs
IS49NLC36160-25B.pdf
576Mbit
400 MHz
20 ns
DRAM
-
Parallel
IS49NLC36160
16M x 36
Tray
RLDRAM 2
-
0°C ~ 70°C (TA)
Surface Mount
144-TFBGA
144-FCBGA (11x18.5)
1.7V ~ 1.9V
Volatile
RFQ
71V016SA15YG
IDT, Integrated Device Technology Inc
IC SRAM 1MBIT PARALLEL 44SOJ
Existencias disponibles46192 pcs
1Mbit
-
15 ns
SRAM
15ns
Parallel
71V016
64K x 16
Bulk
SRAM - Asynchronous
-
0°C ~ 70°C (TA)
Surface Mount
44-BSOJ (0.400", 10.16mm Width)
44-SOJ
3V ~ 3.6V
Volatile
RFQ
W632GG6KB-18
Winbond Electronics
IC DRAM 2GBIT PAR 96WBGA
Existencias disponibles9822 pcs
W632GG6KB-18.pdf
2Gbit
533 MHz
20 ns
DRAM
-
Parallel
W632GG6
128M x 16
Tray
SDRAM - DDR3
-
0°C ~ 95°C (TC)
Surface Mount
96-TFBGA
96-WBGA (9x13)
1.425V ~ 1.575V
Volatile
RFQ
IDT71V3559SA80BG
Renesas Electronics America Inc
IC SRAM 4.5MBIT PARALLEL 119PBGA
Existencias disponibles17157 pcs
IDT71V3559SA80BG.pdf
4.5Mbit
-
8 ns
SRAM
-
Parallel
IDT71V3559
256K x 18
Tray
SRAM - Synchronous, SDR (ZBT)
-
0°C ~ 70°C (TA)
Surface Mount
119-BGA
119-PBGA (14x22)
3.135V ~ 3.465V
Volatile
RFQ
S29GL512T11DHIV13
Infineon Technologies
IC FLASH 512MBIT PARALLEL 64FBGA
Existencias disponibles35184 pcs
S29GL512T11DHIV13.pdf
512Mbit
-
110 ns
FLASH
60ns
Parallel
S29GL512
64M x 8
Tape & Reel (TR)
FLASH - NOR
GL-T
-40°C ~ 85°C (TA)
Surface Mount
64-LBGA
64-FBGA (9x9)
1.65V ~ 3.6V
Non-Volatile
RFQ
BR24G02FVM-3AGTTR
Rohm Semiconductor
IC EEPROM 2KBIT I2C 1MHZ 8MSOP
Existencias disponibles49495 pcs
BR24G02FVM-3AGTTR.pdf
2Kbit
1 MHz
-
EEPROM
5ms
I²C
BR24G02
256 x 8
Tape & Reel (TR)
EEPROM
-
-40°C ~ 85°C (TA)
Surface Mount
8-VSSOP, 8-MSOP (0.110', 2.80mm Width)
8-MSOP
1.6V ~ 5.5V
Non-Volatile
RFQ
IS42S32800D-7BI
ISSI, Integrated Silicon Solution Inc
IC DRAM 256MBIT PAR 90TFBGA
Existencias disponibles6436 pcs
IS42S32800D-7BI.pdf
256Mbit
143 MHz
5.4 ns
DRAM
-
Parallel
IS42S32800
8M x 32
Tray
SDRAM
-
-40°C ~ 85°C (TA)
Surface Mount
90-TFBGA
90-TFBGA (8x13)
3V ~ 3.6V
Volatile
RFQ
AT24C02A-10PC
Microchip Technology
IC EEPROM 2KBIT I2C 400KHZ 8DIP
Existencias disponibles9945 pcs
AT24C02A-10PC.pdf
2Kbit
400 kHz
900 ns
EEPROM
5ms
I²C
AT24C02
256 x 8
Tube
EEPROM
-
0°C ~ 70°C (TA)
Through Hole
8-DIP (0.300', 7.62mm)
8-PDIP
4.5V ~ 5.5V
Non-Volatile
RFQ
MT45W512KW16PEGA-70 IT TR
Micron Technology Inc.
IC PSRAM 8MBIT PARALLEL 48VFBGA
Existencias disponibles4802 pcs
MT45W512KW16PEGA-70 IT TR.pdf
8Mbit
-
70 ns
PSRAM
70ns
Parallel
MT45W512KW16
512K x 16
Tape & Reel (TR)
PSRAM (Pseudo SRAM)
-
-40°C ~ 85°C (TC)
Surface Mount
48-VFBGA
48-VFBGA (6x8)
1.7V ~ 1.95V
Volatile
RFQ
IS25LP016D-JLLE-TR
ISSI, Integrated Silicon Solution Inc
IC FLASH 16MBIT SPI/QUAD 8WSON
Existencias disponibles60130 pcs
IS25LP016D-JLLE-TR.pdf
16Mbit
133 MHz
-
FLASH
800µs
SPI - Quad I/O, QPI, DTR
IS25LP016
2M x 8
Tape & Reel (TR)
FLASH - NOR
-
-40°C ~ 105°C (TA)
Surface Mount
8-WDFN Exposed Pad
8-WSON (8x6)
2.3V ~ 3.6V
Non-Volatile
RFQ
UCS-MR-1X082RY-A-C
ProLabs
Cisco UCS-MR-1X082RY-A Compatibl
Existencias disponibles30440 pcs
-
-
-
-
-
-
-
-
Retail Package
-
*
-
-
-
-
-
-
RFQ
4VN05AA#ABA-C
ProLabs
HP 4VN05AA#ABA Compatible 4GB DD
Existencias disponibles34594 pcs
-
-
-
-
-
-
-
-
Retail Package
-
*
-
-
-
-
-
-
RFQ
MX25U1631FMDI-10G
Macronix
IC FLASH 16MBIT
Existencias disponibles15445 pcs
MX25U1631FMDI-10G.pdf
-
-
-
-
-
-
MX25U1631
-
Tray
-
-
-
-
-
-
-
-
RFQ
MT49H64M9CBM-25E:B
Micron Technology Inc.
IC DRAM 576MBIT PARALLEL 144UBGA
Existencias disponibles5306 pcs
MT49H64M9CBM-25E:B.pdf
576Mbit
400 MHz
15 ns
DRAM
-
Parallel
MT49H64M9
64M x 9
Bulk
DRAM
-
0°C ~ 95°C (TC)
Surface Mount
144-TFBGA
144-µBGA (18.5x11)
1.7V ~ 1.9V
Volatile
RFQ
SM662GX8-ACS
Silicon Motion, Inc.
FERRI-EMMC BGA 100-B EMMC 5.0 ML
Existencias disponibles7208 pcs
SM662GX8-ACS.pdf
-
-
-
-
-
-
SM662
-
Tray
-
-
-
-
-
-
-
-
RFQ
70V06S35PFG8
Renesas Electronics America Inc
IC SRAM 128KBIT PARALLEL 64TQFP
Existencias disponibles11416 pcs
70V06S35PFG8.pdf
128Kbit
-
35 ns
SRAM
35ns
Parallel
70V06S
16K x 8
Tape & Reel (TR)
SRAM - Dual Port, Asynchronous
-
0°C ~ 70°C (TA)
Surface Mount
64-LQFP
64-TQFP (14x14)
3V ~ 3.6V
Volatile
RFQ
IS43LD32320C-25BL-TR
ISSI, Integrated Silicon Solution Inc
IC DRAM 1GBIT PARALLEL 400MHZ
Existencias disponibles13071 pcs
IS43LD32320C-25BL-TR.pdf
1Gbit
400 MHz
-
DRAM
15ns
Parallel
IS43LD32320
32M x 32
Tape & Reel (TR)
SDRAM - Mobile LPDDR2-S4
-
0°C ~ 85°C (TC)
-
-
-
1.14V ~ 1.95V
Volatile
RFQ
SNPCX1KMC/16G-C
ProLabs
Dell SNPCX1KMC/16G Compatible Fa
Existencias disponibles34360 pcs
-
-
-
-
-
-
-
-
Retail Package
-
*
-
-
-
-
-
-
RFQ
MT47H64M8CF-25E L:G TR
Micron Technology Inc.
IC DRAM 512MBIT PARALLEL 60FBGA
Existencias disponibles11066 pcs
MT47H64M8CF-25E L:G TR.pdf
512Mbit
400 MHz
400 ps
DRAM
15ns
Parallel
MT47H64M8
64M x 8
Tape & Reel (TR)
SDRAM - DDR2
-
0°C ~ 85°C (TC)
Surface Mount
60-TFBGA
60-FBGA (8x10)
1.7V ~ 1.9V
Volatile
RFQ
MT41K1G8THE-15E:D TR
Micron Technology Inc.
IC DRAM 8GBIT PAR 78FBGA
Existencias disponibles8093 pcs
MT41K1G8THE-15E:D TR.pdf
8Gbit
667 MHz
13.5 ns
DRAM
-
Parallel
MT41K1G8
1G x 8
Tape & Reel (TR)
SDRAM - DDR3L
-
0°C ~ 95°C (TC)
Surface Mount
78-TFBGA
78-FBGA (10.5x12)
1.283V ~ 1.45V
Volatile
RFQ
7130SA55PFI
Renesas Electronics America Inc
IC SRAM 8KBIT PARALLEL 64TQFP
Existencias disponibles5026 pcs
7130SA55PFI.pdf
8Kbit
-
55 ns
SRAM
55ns
Parallel
7130SA
1K x 8
Tray
SRAM - Dual Port, Asynchronous
-
-40°C ~ 85°C (TA)
Surface Mount
64-LQFP
64-TQFP (14x14)
4.5V ~ 5.5V
Volatile
RFQ