TDA2005M
STMicroelectronics
IC AMP B MONO 22W 11MULTIWATT
Быть в наличии10250 pcs
11-Multiwatt
Tube
TDA2005
22W x 1 @ 3.2Ohm
8V ~ 18V
Multiwatt-11 (Vertical, Bent and Staggered Leads)
Short-Circuit and Thermal Protection
1-Channel (Mono)
Class B
Through Hole
-40°C ~ 150°C (TJ)
-
RFQ
MAX9722AETE+
Analog Devices Inc./Maxim Integrated
IC AMP CLSS AB STER 130MW 16TQFN
Быть в наличии7890 pcs
16-TQFN (3x3)
Strip
MAX9722
130mW x 2 @ 32Ohm
2.4V ~ 5.5V
16-WFQFN Exposed Pad
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
Headphones, 2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
DirectDrive®
RFQ
IS31AP4991A-SLS2-TR
Lumissil Microsystems
IC AMP CLASS AB MONO 1.15W 8MSOP
Быть в наличии177070 pcs
8-MSOP
Tape & Reel (TR)
IS31AP4991
1.15W x 1 @ 8Ohm
2.7V ~ 5.5V
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Depop, Standby
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TDA7233
STMicroelectronics
IC AMP AB MONO 1.9W 8MINI DIP
Быть в наличии12260 pcs
8-Mini DIP
Tube
TDA7233
1.9W x 1 @ 8Ohm
1.8V ~ 15V
8-DIP (0.300", 7.62mm)
Mute, Shutdown
1-Channel (Mono)
Class AB
Through Hole
-40°C ~ 150°C (TJ)
-
RFQ
AS1703-T
ams-OSRAM USA INC.
IC AMP CLASS AB MONO 1.8W 10MSOP
Быть в наличии15410 pcs
10-MSOP
Tape & Reel (TR)
AS1703
1.8W x 1 @ 4Ohm
2.7V ~ 5.5V
10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
AS1706
ams-OSRAM USA INC.
IC AMP CLASS AB MONO 1.6W 8MSOP
Быть в наличии7430 pcs
8-MSOP
Tube
-
1.6W x 1 @ 4Ohm
2.7V ~ 5.5V
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
D2-41051-QR
Renesas Electronics America Inc
IC AMP CLASS D STEREO 48QFN
Быть в наличии11224 pcs
48-QFN (7x7)
Tray
D2-41051
-
1.7V ~ 1.9V
48-VFQFN Exposed Pad
PWM Control
2-Channel (Stereo) with Subwoofer
Class D
Surface Mount
-10°C ~ 85°C (TA)
-
RFQ
TDA7851L
STMicroelectronics
IC AMP AB QUAD 75W 25FLEXIWATT
Быть в наличии12356 pcs
25-Flexiwatt (Vertical)
Tube
TDA7851
75W x 4 @ 2Ohm
8V ~ 18V
25-Flexiwatt (Formed Leads)
Mute, Short-Circuit and Thermal Protection, Standby
4-Channel (Quad)
Class AB
Through Hole
-40°C ~ 105°C (TA)
-
RFQ
TAS5611APHDR
Texas Instruments
IC AMP D MONO/STER 250W 64HTQFP
Быть в наличии4758 pcs
64-HTQFP (14x14)
Tape & Reel (TR)
TAS5611
250W x 1 @ 2Ohm; 165W x 2 @ 3Ohm
16V ~ 34.1V
64-TQFP Exposed Pad
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono) or 2-Channel (Stereo)
Class D
Surface Mount
0°C ~ 70°C (TA)
PurePath™ HD
RFQ
MAX9736BETJ+T
Analog Devices Inc./Maxim Integrated
IC AMP D MONO/STEREO 15W 32TQFN
Быть в наличии14028 pcs
32-TQFN (5x5)
Tape & Reel (TR)
MAX9736
15W x 1 @ 4Ohm; 7.5W x 2 @ 8Ohm
8V ~ 28V
32-WFQFN Exposed Pad
Depop, Mute, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono) or 2-Channel (Stereo)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA6211A1DRB
Texas Instruments
IC AMP CLASS AB MONO 3.1W 8SON
Быть в наличии74240 pcs
8-SON (3x3)
Tube
TPA6211A1
3.1W x 1 @ 3Ohm
2.5V ~ 5.5V
8-VDFN Exposed Pad
Depop, Differential Inputs, Shutdown, Thermal Protection
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
ADAU1592ACPZ
Analog Devices Inc.
IC AMP CLASS D STER 24W 48LFCSP
Быть в наличии9779 pcs
48-LFCSP-VQ (7x7)
Bulk
ADAU1592
24W x 2 @ 4Ohm
9V ~ 18V
48-VFQFN Exposed Pad, CSP
Depop, Mute, Short-Circuit and Thermal Protection, Standby
2-Channel (Stereo)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA2008D2PWPR
Texas Instruments
IC AMP CLASS D STER 3W 24HTSSOP
Быть в наличии30930 pcs
24-HTSSOP
Tape & Reel (TR)
TPA2008
3W x 2 @ 3Ohm
4.5V ~ 5.5V
24-PowerTSSOP (0.173", 4.40mm Width)
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown, Volume Control
2-Channel (Stereo)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA751DR
Texas Instruments
IC AMP CLASS AB MONO 700MW 8SOIC
Быть в наличии42290 pcs
8-SOIC
Tape & Reel (TR)
TPA751
700mW x 1 @ 8Ohm
2.5V ~ 5.5V
8-SOIC (0.154", 3.90mm Width)
Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
LA4814JA-AE
onsemi
IC AMP CLSS AB STER 350MW 20SSOP
Быть в наличии8460 pcs
20-SSOP
Tape & Reel (TR)
LA4814
350mW x 2 @ 4Ohm
2.7V ~ 7V
20-LSSOP (0.173", 4.40mm Width)
Depop
2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TAS5414BTPHDRQ1
Texas Instruments
IC AMP CLASS D QUAD 150W 64HTQFP
Быть в наличии2826 pcs
64-HTQFP (14x14)
Tape & Reel (TR)
TAS5414
150W x 2 @ 2Ohm; 79W x 4 @ 4Ohm
6V ~ 24V
64-TQFP Exposed Pad
Depop, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown
4-Channel (Quad)
Class D
Surface Mount
-40°C ~ 105°C (TA)
Automotive, AEC-Q100
RFQ
MAX9713ETJ+T
Analog Devices Inc./Maxim Integrated
IC AMP CLASS D MONO 8W 32TQFN
Быть в наличии22043 pcs
32-TQFN (5x5)
Tape & Reel (TR)
MAX9713
8W x 1 @ 16Ohm
10V ~ 25V
32-WFQFN Exposed Pad
Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA2033D1YZFR
Texas Instruments
IC AMP CLASS D MONO 2.75W 9DSBGA
Быть в наличии91170 pcs
9-DSBGA
Tape & Reel (TR)
TPA2033
2.75W x 1 @ 4Ohm
2.5V ~ 5.5V
9-UFBGA, DSBGA
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class D
Surface Mount
-40°C ~ 85°C (TA)
NanoFree™
RFQ
TAS5613APHDR
Texas Instruments
IC AMP D MONO/STER 300W 64HTQFP
Быть в наличии3684 pcs
64-HTQFP (14x14)
Tape & Reel (TR)
TAS5613
300W x 1 @ 2Ohm; 200W x 2 @ 3Ohm
18V ~ 38V
64-TQFP Exposed Pad
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono) or 2-Channel (Stereo)
Class D
Surface Mount
0°C ~ 70°C (TA)
PurePath™ HD
RFQ
TAS5706BPAP
Texas Instruments
IC AMP D DUAL/QUAD 20.6W 64HTQFP
Быть в наличии3068 pcs
64-HTQFP (10x10)
Tray
TAS5706
20.6W x 2 @ 8Ohm
10V ~ 26V
64-PowerTQFP
Depop, Digital Inputs, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Shutdown, Volume Control
2-Channel (Stereo) or 4-Channel (Quad)
Class D
Surface Mount
0°C ~ 85°C (TA)
-
RFQ
MAX4411EBE+T
Analog Devices Inc./Maxim Integrated
IC AMP CLASS AB STER 80MW 16UCSP
Быть в наличии14000 pcs
16-UCSP (2x2)
Tape & Reel (TR)
MAX4411
80mW x 2 @ 16Ohm
1.8V ~ 3.6V
16-WFBGA, CSPBGA
Depop, Short-Circuit and Thermal Protection, Shutdown
Headphones, 2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
DirectDrive®
RFQ
BA5204F
Rohm Semiconductor
IC AMP AUDIO PWR .035W AB 16SOP
Быть в наличии8760 pcs
16-SOP
Tape & Reel (TR)
-
35mW x 2 @ 32Ohm
1.8V
16-SOIC (0.173", 4.40mm Width)
-
2-Channel (Stereo)
Class AB
Surface Mount
-25°C ~ 75°C (TA)
-
RFQ
STA533WF13TR
STMicroelectronics
IC AMP AB QUAD 20W POWERSSO36
Быть в наличии17306 pcs
PowerSSO-36 EPD
Tape & Reel (TR)
STA533
20W x 2 @ 8Ohm
5V ~ 18V
36-PowerBFSOP (0.295", 7.50mm Width)
Thermal and Short-Circuit Protection
4 Half Bridge
Class AB
Surface Mount
0°C ~ 70°C (TA)
-
RFQ
DRV612RGTR
Texas Instruments
IC AMP CLASS AB STEREO 16QFN
Быть в наличии94860 pcs
16-VQFN (3x3)
Tape & Reel (TR)
DRV612
-
3V ~ 3.6V
16-VFQFN Exposed Pad
Depop, Mute, Short-Circuit and Thermal Protection
2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
DirectPath™
RFQ
SSM2301RMZ-REEL
Analog Devices Inc.
IC AMP CLASS D MONO 1.52W 8MSOP
Быть в наличии16170 pcs
8-MSOP
Tape & Reel (TR)
SSM2301
1.52W x 1 @ 8Ohm
2.5V ~ 5V
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TAS5101DAP
Texas Instruments
IC AMP CLASS D STER 15W 32HTSSOP
Быть в наличии5830 pcs
32-HTSSOP
Tube
TAS510
15W x 2 @ 4Ohm
3V ~ 3.6V
32-PowerTSSOP (0.240", 6.10mm Width)
Digital Inputs, Short-Circuit and Thermal Protection, Shutdown
2-Channel (Stereo)
Class D
Surface Mount
0°C ~ 70°C (TA)
Equibit™
RFQ
TAS5414ATDKDRMQ1
Texas Instruments
IC AMP CLASS D QUAD 116W 36HSSOP
Быть в наличии15790 pcs
36-HSSOP
Tape & Reel (TR)
TAS5414
116W x 2 @ 2Ohm, 58W x 4 @ 4Ohm
8V ~ 22V
36-BSSOP (0.433", 11.00mm Width) Exposed Pad
Depop, I²C, Mute, Short-Circuit and Thermal Protection, Shutdown
4-Channel (Quad)
Class D
Surface Mount
-40°C ~ 105°C (TA)
Automotive, AEC-Q100
RFQ
MAX4466EXK+T
Analog Devices Inc./Maxim Integrated
IC AMP CLASS AB MONO SC70-5
Быть в наличии111760 pcs
SC-70-5
Tape & Reel (TR)
MAX4466
-
2.4V ~ 5.5V
5-TSSOP, SC-70-5, SOT-353
Microphone
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TDA7562B
STMicroelectronics
IC AMP AB QUAD 60W 27FLEXIWATT
Быть в наличии5348 pcs
27-Flexiwatt (Vertical)
Tube
TDA7562
60W x 4 @ 2Ohm
8V ~ 18V
27-Flexiwatt (Formed Leads)
I²C, Mute, Short-Circuit and Thermal Protection, Standby
4-Channel (Quad)
Class AB
Through Hole
-40°C ~ 105°C (TA)
-
RFQ
MAX97220BETE+T
Analog Devices Inc./Maxim Integrated
IC AMP CLSS AB STER 125MW 16TQFN
Быть в наличии39840 pcs
16-TQFN (3x3)
Tape & Reel (TR)
MAX97220
125mW x 2 @ 32Ohm
2.5V ~ 5.5V
16-WFQFN Exposed Pad
Depop, Differential Inputs, Shutdown
Headphones, 2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
DirectDrive®
RFQ
SSM2166S
Analog Devices Inc.
IC PREAMP AUDIO MONO MIC 14SOIC
Быть в наличии3810 pcs
14-SOIC
Tube
SSM2166
-
4.5V ~ 5.5V
14-SOIC (0.154", 3.90mm Width)
Microphone
1-Channel (Mono)
Class AB
Surface Mount
-
-
RFQ
MP8049SDU-LF-Z
Monolithic Power Systems Inc.
IC AMP CLASS D QUAD 30W 40QFN
Быть в наличии22132 pcs
40-QFN (5x5)
Tape & Reel (TR)
MP8049
30W x 4 @ 8Ohm
-
40-VFQFN Exposed Pad
Short-Circuit and Thermal Protection
4-Channel (Quad)
Class D
Surface Mount
-40°C ~ 125°C (TJ)
-
RFQ
TPA3136D2PWPR
Texas Instruments
IC AMP CLASS D STER 10W 28HTSSOP
Быть в наличии34920 pcs
28-HTSSOP
Tape & Reel (TR)
TPA3136
10W x 2 @ 8Ohm
4.5V ~ 14.4V
28-PowerTSSOP (0.173", 4.40mm Width)
Depop, Short-Circuit and Thermal Protection
2-Channel (Stereo)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA302D
Texas Instruments
IC AMP CLASS AB STER 300MW 8SOIC
Быть в наличии10424 pcs
8-SOIC
Tube
TPA302
300mW x 2 @ 8Ohm
2.7V ~ 5.5V
8-SOIC (0.154", 3.90mm Width)
Short-Circuit and Thermal Protection, Shutdown
2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MAX9791AETI+
Analog Devices Inc./Maxim Integrated
IC AMP CLASS D STER 2.2W 28TQFN
Быть в наличии19122 pcs
28-TQFN (5x5)
Tube
MAX9791
2.2W x 2 @ 4Ohm; 180mW x 2 @ 32Ohm
4.5V ~ 5.5V
28-WFQFN Exposed Pad
Depop, LDO, Short-Circuit and Thermal Protection, Shutdown
2-Channel (Stereo) with Stereo Headphones and Subwoofer
Class D
Surface Mount
-40°C ~ 85°C (TA)
DirectDrive®
RFQ
SSM2305RMZ-REEL
Analog Devices Inc.
IC AMP CLASS D MONO 2.8W 8MSOP
Быть в наличии40227 pcs
8-MSOP
Tape & Reel (TR)
SSM2305
2.8W x 1 @ 4Ohm
2.2V ~ 5.5V
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
MP7721DF-LF-Z
Monolithic Power Systems Inc.
IC AMP CLASS D STEREO 20TSSOP
Быть в наличии10960 pcs
20-TSSOPF-EP
Tape & Reel (TR)
-
10W x 2 @ 8Ohm
9.5V ~ 24V
20-TSSOP (0.173", 4.40mm Width) Exposed Pad
-
2-Channel (Stereo)
Class D
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TS482ID
STMicroelectronics
IC AMP CLASS AB STEREO 107MW 8SO
Быть в наличии6730 pcs
8-SOIC
Tube
TS482
107mW x 2 @ 16Ohm
2V ~ 5.5V
8-SOIC (0.154", 3.90mm Width)
Depop
Headphones, 2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA6120A2RGYR
Texas Instruments
IC AMP CLASS AB STER 80MW 14VQFN
Быть в наличии31658 pcs
14-VQFN (3.5x3.5)
Tape & Reel (TR)
TPA6120A2
80mW x 2 @ 600Ohm
10V ~ 30V, ±5V ~ 15V
14-VFQFN Exposed Pad
Differential Inputs, Short-Circuit and Thermal Protection
Headphones, 2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
TPA731DR
Texas Instruments
IC AMP CLASS AB MONO 700MW 8SOIC
Быть в наличии30710 pcs
8-SOIC
Tape & Reel (TR)
TPA731
700mW x 1 @ 8Ohm
2.5V ~ 5.5V
8-SOIC (0.154", 3.90mm Width)
Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
IS31AP4991-GRLS2-TR
Lumissil Microsystems
IC AMP CLASS AB MONO 1.2W 8SOIC
Быть в наличии8880 pcs
8-SOIC
Tape & Reel (TR)
IS31AP4991
1.2W x 1 @ 8Ohm
2.7V ~ 5.5V
8-SOIC (0.154", 3.90mm Width)
Depop, Differential Inputs, Standby, Thermal Protection
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
LM4809MM
Texas Instruments
IC AMP CLSS AB STER 105MW 8VSSOP
Быть в наличии15030 pcs
8-VSSOP
Tape & Reel (TR)
LM4809
105mW x 2 @ 16Ohm
2V ~ 5.5V
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Depop, Shutdown, Thermal Protection
Headphones, 2-Channel (Stereo)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
Boomer®
RFQ
SSM2211S-REEL7
Analog Devices Inc.
IC AMP AUDIO PWR 1W MONO 8SOIC
Быть в наличии73320 pcs
8-SOIC
Bulk
SSM2211
1.5W x 1 @ 4Ohm
2.7V ~ 5.5V
8-SOIC (0.154", 3.90mm Width)
Differential Inputs, Shutdown
1-Channel (Mono)
Class AB
Surface Mount
-
-
RFQ
TDA7851F
STMicroelectronics
IC AMP AB QUAD 75W 25FLEXIWATT
Быть в наличии9608 pcs
25-Flexiwatt (Vertical)
Tube
TDA7851
75W x 4 @ 2Ohm
8V ~ 18V
25-Flexiwatt (Formed Leads)
Mute, Short-Circuit and Thermal Protection, Standby
4-Channel (Quad)
Class AB
Through Hole
-
-
RFQ
NCP2820AFCT2G
onsemi
IC PWR AMP AUDIO 2.65W D 9-CSP
Быть в наличии7340 pcs
9-FlipChip (1.45x1.45)
Tape & Reel (TR)
NCP2820
2.65W x 1 @ 4Ohm
2.5V ~ 5.5V
9-WFBGA, FCBGA
Depop, Differential Inputs, Short-Circuit and Thermal Protection, Shutdown
1-Channel (Mono)
Class D
Surface Mount
-
-
RFQ
TDA749213TR
STMicroelectronics
IC AMP D STEREO 50W POWERSSO36
Быть в наличии12557 pcs
PowerSSO-36 EPU
Tape & Reel (TR)
TDA749213
50W x 2 @ 6Ohm
8V ~ 26V
36-PowerFSOP (0.295", 7.50mm Width)
Depop, Differential Inputs, Mute, Short-Circuit and Thermal Protection, Standby
2-Channel (Stereo)
Class D
Surface Mount
0°C ~ 70°C (TA)
-
RFQ
NJM2076M
Nisshinbo Micro Devices Inc.
IC AMP AB MONO/STEREO 90MW 8DMP
Быть в наличии6210 pcs
8-DMP
Tube
-
90mW x 1 @ 8Ohm; 17.5mW x 2 @ 16Ohm
1.8V ~ 15V
8-SOIC (0.209", 5.30mm Width)
-
1-Channel (Mono) or 2-Channel (Stereo)
Class AB
Surface Mount
-20°C ~ 75°C (TA)
-
RFQ
TAS5112ADFDR
Texas Instruments
IC AMP CLASS D STER 62W 56HTSSOP
Быть в наличии6771 pcs
56-HTSSOP
Tape & Reel (TR)
TAS5112
62W x 2 @ 6Ohm
16V ~ 25.5V
56-PowerTSSOP (0.240", 6.10mm Width)
Depop, Digital Inputs, Mute, Short-Circuit and Thermal Protection, Shutdown
2-Channel (Stereo)
Class D
Surface Mount
0°C ~ 70°C (TA)
PurePath Digital™
RFQ
TS4972EIJT
STMicroelectronics
IC AMP AB MONO 1.6W 8FLIPCHIP
Быть в наличии11480 pcs
8-FlipChip
Tape & Reel (TR)
TS4972
1.6W x 1 @ 4Ohm
2.5V ~ 5.5V
8-UFBGA, FCBGA
Depop, Standby, Thermal Protection
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ
NJM386BM-TE1
Nisshinbo Micro Devices Inc.
IC AUDIO PWR AMP BIPO LV 8DMP
Быть в наличии5300 pcs
8-DMP
Tape & Reel (TR)
-
1W x 1 @ 32Ohm
4V ~ 18V
8-SOIC (0.197", 5.00mm Width)
-
1-Channel (Mono)
Class AB
Surface Mount
-40°C ~ 85°C (TA)
-
RFQ