TPS746125PQWDRBRQ1
Texas Instruments
IC POWER
Na skladě59250 pcs
36 µA
Positive
Current Limit, Enable, Power Good
1.25V
-
1
1A
0.625V @ 1A
-
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
-
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount, Wettable Flank
6V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
-
RFQ
L7812ABV
STMicroelectronics
IC REG LINEAR 12V 1.5A TO220AB
Na skladě142940 pcs
6 mA
Positive
-
12V
-
1
1.5A
2V @ 1A (Typ)
60dB (120Hz)
Over Temperature, Short Circuit
L7812
Tube
-
-40°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220
-
RFQ
LM117K
STMicroelectronics
IC REG LINEAR POS ADJ 1.5A TO3
Na skladě16590 pcs
5 mA
Positive
-
1.25V
37V
1
1.5A
-
80dB ~ 65dB (120Hz)
Over Current, Over Temperature
LM117
Tray
-
-55°C ~ 150°C
Through Hole
40V
Adjustable
TO-204AA, TO-3
TO-3
-
RFQ
LT1129IQ-3.3#TRPBF
Analog Devices Inc.
IC REG LINEAR 3.3V 700MA 5DDPAK
Na skladě4426 pcs
70 µA
Positive
Enable
3.3V
-
1
700mA
0.7V @ 700mA
64dB (120Hz)
Over Temperature, Reverse Polarity
LT1129
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
5-DDPAK
90 mA
RFQ
S-T111B28MC-OGNTFG
ABLIC Inc.
IC REG LINEAR 2.8V 150MA SOT23-5
Na skladě66800 pcs
1 µA
Positive
Enable
2.8V
-
1
150mA
0.26V @ 100mA
80dB (1kHz)
Over Current
S-T111
Tape & Reel (TR)
S-T111
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
90 µA
RFQ
NCV8509PDW18
onsemi
IC REG LINEAR 3.3V/1.8V 16SOIC
Na skladě17010 pcs
175 µA
Positive
Reset
3.3V, 1.8V
-
2
115mA, 100mA
0.6V @ 100mA, -
-
Over Temperature
NCV8509
Tube
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
50V
Fixed
16-SOIC (0.295", 7.50mm Width) Exposed Pad
16-SOIC
10 mA
RFQ
REG1117F-3.3KTTT
Texas Instruments
IC REG LIN 3.3V 800MA DDPAK
Na skladě8395 pcs
10 mA
Positive
-
3.3V
-
1
800mA
1.2V @ 800mA
62dB (120Hz)
Over Current, Over Temperature
REG111
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
15V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
DDPAK/TO-263-3
-
RFQ
LM1117IDT-5.0
Texas Instruments
IC REG LIN FIXED POS LDO REG 5V
Na skladě92200 pcs
5 mA
Positive
-
5V
-
1
800mA
1.2V @ 800mA
75dB (120Hz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
15V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252-3
10 mA
RFQ
MAX604ESA
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 500MA 8SOIC
Na skladě10380 pcs
35 µA
Positive
Enable
1.25V (3.3V)
11V
1
500mA
0.82V @ 400mA
-
Over Current, Over Temperature, Reverse Polarity
MAX604
Tube
-
-40°C ~ 85°C
Surface Mount
11.5V
Adjustable (Fixed)
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
AP78L08VL-A
Diodes Incorporated
IC REG LINEAR 8V 100MA TO92-3
Na skladě6920 pcs
5.5 mA
Positive
-
8V
-
1
100mA
-
46dB (120Hz)
Over Temperature, Short Circuit
AP78L08
Bulk
-
-20°C ~ 85°C
Through Hole
23V
Fixed
TO-226-3, TO-92-3 (TO-226AA) Formed Leads
TO-92
-
RFQ
NJM2388F12
Nisshinbo Micro Devices Inc.
IC REG LINEAR 12V 1A TO220F-4
Na skladě46700 pcs
5 mA
Positive
Enable
12V
-
1
1A
0.5V @ 500mA
63dB (120Hz)
Over Current, Over Temperature, Over Voltage
NJM2388
Tube
-
-40°C ~ 85°C
Through Hole
35V
Fixed
TO-220-4 Full Pack
TO-220F-4
-
RFQ
NCP4632DDT33T5G
onsemi
IC REG LINEAR 3.3V 3A DPAK-5
Na skladě4610 pcs
430 µA
Positive
Enable
3.3V
-
1
3A
0.56V @ 3A
55dB (1kHz)
Over Current, Over Temperature, Reverse Polarity, Soft Start
NCP4632
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
TO-252-6, DPak (5 Leads + Tab)
DPAK-5 (TO-252)
-
RFQ
ISL9003AIEMZ-T
Renesas Electronics America Inc
IC REG LINEAR 3V 150MA SC70-5
Na skladě37600 pcs
40 µA
Positive
Enable
3V
-
1
150mA
0.325V @ 150mA
-
Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
ISL9003
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
57 µA
RFQ
AP1117E50G-13
Diodes Incorporated
IC REG LINEAR 5V 1A SOT223-3
Na skladě8080 pcs
10 mA
Positive
-
5V
-
1
1A
1.4V @ 1A
60dB (180Hz)
Over Current, Over Temperature
AP1117
Tape & Reel (TR)
-
0°C ~ 125°C (TJ)
Surface Mount
18V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
NCV8114ASN150T1G
onsemi
IC REG LINEAR 1.5V 300MA 5TSOP
Na skladě17850 pcs
95 µA
Positive
Enable
1.5V
-
1
300mA
0.5V @ 300mA
75dB (1kHz)
Over Current, Over Temperature
NCV8114
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
5-TSOP
-
RFQ
IFX20001MBV33HTSA1
Infineon Technologies
IC REG LINEAR 3.3V 30MA SCT595-5
Na skladě13400 pcs
170 µA
Positive
Inhibit
3.3V
-
1
30mA
0.3V @ 20mA
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
IFX20001
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
45V
Fixed
6-SMD (5 Leads), Gull Wing
PG-SCT595-5-2
4.5 mA
RFQ
MIC5264-JGYML
Micrel Inc.
IC REG LIN 1.8V/2.5V 150MA 10MLF
Na skladě139300 pcs
2 µA
Positive
Enable
1.8V, 2.5V
-
2
150mA, 150mA
0.5V @ 150mA, 0.5V @ 150mA
64dB ~ 62dB (1kHz ~ 100Hz)
Over Temperature, Under Voltage Lockout (UVLO)
-
Bulk
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
10-VFDFN Exposed Pad, 10-MLF®
10-MLF® (3x3)
150 µA
RFQ
AP1086KG-13
Diodes Incorporated
IC REG LINEAR POS ADJ 1.5A TO263
Na skladě16410 pcs
10 mA
Positive
-
1.25V
5V
1
1.5A
1.4V @ 1.5A
60dB (120Hz)
Over Current, Over Temperature
AP1086
Tape & Reel (TR)
-
0°C ~ 125°C (TJ)
Surface Mount
12V
Adjustable
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
TO-263
-
RFQ
TPS79318DBVR
Texas Instruments
IC REG LINEAR 1.8V 200MA SOT23-5
Na skladě227160 pcs
220 µA
Positive
Enable
1.8V
-
1
200mA
-
70dB ~ 43dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS79318
Tape & Reel (TR)
-
-40°C ~ 150°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
AZ1117H-ADJTRE1
Diodes Incorporated
IC REG LINEAR POS ADJ 1A SOT223
Na skladě280620 pcs
10 mA
Positive
-
1.25V
13.75V
1
1A
1.25V @ 1A
75dB (120Hz)
Thermal Shutdown
AZ1117
Tape & Reel (TR)
AZ1117
-40°C ~ 125°C (TJ)
Surface Mount
15V
Adjustable
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
CMPWR025R
onsemi
IC REG LINEAR 600MA 8MSOP
Na skladě17200 pcs
50 µA
-
-
-
-
1
600mA
-
-
-
CMPWR0
Tape & Reel (TR)
SmartOR™
0°C ~ 70°C
Surface Mount
5.5V
-
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
-
RFQ
LT3082IDD
Analog Devices Inc.
IC REG LINEAR POS ADJ 200MA 8DFN
Na skladě11380 pcs
500 µA
Positive
-
0V
38.5V
1
200mA
1.65V @ 200mA
90dB ~ 20dB (120Hz ~ 1MHz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
-
Tube
-
-40°C ~ 125°C
Surface Mount
40V
Adjustable
8-WFDFN Exposed Pad
8-DFN (3x3)
-
RFQ
ADP160ACBZ-4.2-R7
Analog Devices Inc.
IC REG LINEAR 4.2V 150MA 4WLCSP
Na skladě48930 pcs
1.25 µA
Positive
Enable
4.2V
-
1
150mA
-
-
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
ADP160
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
4-WFBGA, WLCSP
4-WLCSP (0.96x0.96)
65 µA
RFQ
LT1763CS8-1.5#PBF
Analog Devices Inc.
IC REG LINEAR 1.5V 500MA 8SOIC
Na skladě10751 pcs
-
Positive
Enable
1.5V
-
1
500mA
0.45V @ 500mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1763
Tube
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
8-SOIC (0.154", 3.90mm Width)
8-SO
-
RFQ
TLV71211DSER
Texas Instruments
IC REG LINEAR 1.1V 300MA 6WSON
Na skladě117330 pcs
55 µA
Positive
Enable
1.1V
-
1
300mA
-
68dB (1kHz)
Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
TLV71211
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
6-WFDFN
6-WSON (1.5x1.5)
370 µA
RFQ
MCP1702T-5002E/CB
Microchip Technology
IC REG LINEAR 5V 250MA SOT23A-3
Na skladě80990 pcs
5 µA
Positive
-
5V
-
1
250mA
0.65V @ 250mA
44dB (100Hz)
Over Current, Over Temperature, Short Circuit
MCP1702
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
13.2V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23A-3
-
RFQ
KA78L05AIDTF
onsemi
IC REG LINEAR 5V 100MA 8SOIC
Na skladě16250 pcs
5.5 mA
Positive
-
5V
-
1
100mA
-
80dB (120Hz)
Over Temperature, Short Circuit
KA78L05
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
LT3080EMS8E-1
Analog Devices Inc.
IC REG LINEAR POS ADJ 1.1A 8MSOP
Na skladě6190 pcs
500 µA
Positive
-
0V
36V
1
1.1A
1.6V @ 1.1A
75dB ~ 20dB (120Hz ~ 1MHz)
Over Current, Over Temperature, Short Circuit
-
Tube
-
-40°C ~ 125°C (TJ)
Surface Mount
36V
Adjustable
8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
8-MSOP-EP
30 mA
RFQ
MIC5236BM
Microchip Technology
IC REG LIN POS ADJ 150MA 8SOIC
Na skladě17920 pcs
30 µA
Positive
Enable
1.24V
20V
1
150mA
0.5V @ 150mA
-
Load Dump, Over Current, Over Temperature, Over Voltage, Reverse Polarity
MIC5236
Tube
-
-40°C ~ 125°C
Surface Mount
30V
Adjustable
8-SOIC (0.154', 3.90mm Width)
8-SOIC
5 mA
RFQ
TPS7A1650DRBR
Texas Instruments
IC REG LINEAR 5V 100MA 8SON
Na skladě19371 pcs
15 µA
Positive
Enable, Power Good
5V
-
1
100mA
0.5V @ 100mA
50dB (100Hz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS7A1650
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
60V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
-
RFQ
CAT6219ADJVP5GT4
onsemi
IC REG LIN POS ADJ 500MA 6TDFN
Na skladě6780 pcs
75 µA
Positive
Enable
1.25V
5V
1
500mA
0.5V @ 500mA
64dB ~ 54dB (1kHz ~ 20kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
CAT6219
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
6-WDFN Exposed Pad
6-TDFN (2x2)
90 µA
RFQ
TLE42994G
Infineon Technologies
IC REG LINEAR VOLT TLE42994
Na skladě45100 pcs
105 µA
Positive
Delay, Enable, Reset
5V
-
1
150mA
0.5V @ 100mA
66dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
-
Bulk
Automotive, AEC-Q100
-40°C ~ 150°C (TJ)
Surface Mount
45V
Fixed
8-SOIC (0.154", 3.90mm Width)
PG-DSO-8-16
2 mA
RFQ
AP2138N-2.2TRG1
Diodes Incorporated
IC REG LINEAR 250MA SOT23-3
Na skladě520700 pcs
1.5 µA
Positive
-
-
-
1
250mA
-
-
-
AP2138
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
6V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
-
RFQ
LT1585CM-3.3#TRPBF
Analog Devices Inc.
IC REG LINEAR 3.3V 4.6A D2PAK-3
Na skladě3880 pcs
-
Positive
-
3.3V
-
1
4.6A
1.4V @ 4.6A
-
Over Current, Over Temperature, Short Circuit
LT1585
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
7V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
3-DDPAK
-
RFQ
AS1358-BTTT-28
ams OSRAM
IC REG LIN 2.8V 150MA TSOT23-5
Na skladě91980 pcs
90 µA
Positive
Enable
2.8V
-
1
150mA
0.12V @ 150mA
92dB ~ 62dB (1kHz ~ 100kHz)
Over Temperature
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
TPS73730DRBR
Texas Instruments
IC REG LINEAR 3V 1A 8SON
Na skladě48910 pcs
400 µA
Positive
Enable
3V
-
1
1A
0.5V @ 1A
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Reverse Polarity
TPS73730
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
1.3 mA
RFQ
LP2989AILDX-3.3
Texas Instruments
IC REG LINEAR 3.3V 500MA 8WSON
Na skladě4940 pcs
175 µA
Positive
Enable
3.3V
-
1
500mA
0.65V @ 500mA
60dB (1kHz)
Over Current, Over Temperature, Short Circuit
LP2989
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
8-WDFN Exposed Pad
8-WSON (4x4)
9 mA
RFQ
TPS73533DRBR
Texas Instruments
IC REG LINEAR 3.3V 500MA 8SON
Na skladě48600 pcs
65 µA
Positive
Enable
3.3V
-
1
500mA
0.5V @ 500mA
66dB ~ 22dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS73533
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
-
RFQ
LP3875ESX-ADJ
Texas Instruments
IC REG LINEAR POS ADJ 1.5A DDPAK
Na skladě9460 pcs
5 mA
Positive
Enable
1.22V
6.4V
1
1.5A
0.55V @ 1.5A
73dB ~ 57dB (120Hz)
Over Current, Over Temperature, Short Circuit
LP3875
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
7V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
DDPAK/TO-263-5
15 mA
RFQ
IRU1205CLTR
Infineon Technologies
IC REG LIN POS ADJ 300MA SOT23-5
Na skladě6690 pcs
-
Positive
Enable
1.25V
9.6V
1
300mA
0.4V @ 300mA
-
Over Current, Over Temperature
IRU1205CL
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
10V
Adjustable
SC-74A, SOT-753
SOT-23-5
-
RFQ
FAN1117ASX
onsemi
IC REG LINEAR POS ADJ 1A SOT223
Na skladě9910 pcs
-
Positive
-
1.25V
18V
1
1A
1.2V @ 1A
72dB (120Hz)
Over Current, Over Temperature
FAN1117
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
18V
Adjustable
TO-261-4, TO-261AA
SOT-223-4
-
RFQ
RT9018B-18GQW
Richtek USA Inc.
IC REG LIN POS ADJ 3A 10WDFN
Na skladě15150 pcs
1.2 mA
Positive
Enable, Power Good
0.8V (1.8V)
5.15V
1
3A
0.35V @ 3A
-
Over Current, Over Temperature
RT9018
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Adjustable (Fixed)
10-WFDFN Exposed Pad
10-WDFN (3x3)
-
RFQ
TC1186-2.7VCT713
Microchip Technology
IC REG LINEAR 2.7V 150MA SOT23-5
Na skladě105560 pcs
80 µA
Positive
Enable
2.7V
-
1
150mA
0.4V @ 150mA
64dB (1kHz)
Over Current, Over Temperature
TC1186
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
IRU1010-18CS
Infineon Technologies
IC REG LINEAR 1.8V 1A 8SOIC
Na skladě4020 pcs
-
Positive
-
1.8V
-
1
1A
1.3V @ 1A
70dB (120Hz)
Over Current, Over Temperature
IRU1010-18CS
Tube
-
0°C ~ 125°C
Surface Mount
7V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
REG102GA-2.85
Texas Instruments
IC REG LIN 2.85V 250MA SOT223-6
Na skladě20694 pcs
500 µA
Positive
Enable
2.85V
-
1
250mA
0.27V @ 250mA
65dB (120Hz)
Over Current, Over Temperature
REG102
Tube
-
-40°C ~ 85°C
Surface Mount
10V
Fixed
SOT-223-6
SOT-223-6
800 µA
RFQ
TPS73733DCQR
Texas Instruments
IC REG LINEAR 3.3V 1A SOT223-6
Na skladě62220 pcs
400 µA
Positive
Enable
3.3V
-
1
1A
0.5V @ 1A
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Reverse Polarity
TPS73733
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-223-6
SOT-223-6
1.3 mA
RFQ
MIC5330-PNYML
Micrel Inc.
DUAL, 300MA UCAP LDO
Na skladě87830 pcs
120 µA
Positive
Enable
3V, 2.85V
-
2
300mA, 300mA
0.2V @ 300mA, 0.2V @ 300mA
70dB ~ 65dB (1kHz ~ 20kHz)
Over Current, Over Temperature
-
Bulk
ULDO™
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
8-VFDFN Exposed Pad, 8-MLF®
8-MLF® (2x2)
200 µA
RFQ
NCP4589DSN33T1G
onsemi
IC REG LINEAR 3.3V 300MA SOT23-5
Na skladě13340 pcs
4 µA
Positive
Enable
3.3V
-
1
300mA
0.35V @ 300mA
70dB (1kHz)
Over Current
NCP4589
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TLV74133PDQNR
Texas Instruments
IC REG LINEAR 3.3V 150MA 4X2SON
Na skladě578250 pcs
50 µA
Positive
Enable
3.3V
-
1
150mA
0.54V @ 150mA
70dB ~ 55dB (100Hz ~ 1MHz)
Current Limit, Thermal Shutdown, UVLO
TLV74133
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
75 µA
RFQ
NCP7805TG
onsemi
IC REG LINEAR 5V 1A TO220AB
Na skladě5270 pcs
8 mA
Positive
-
5V
-
1
1A
2V @ 1A (Typ)
75dB (120Hz)
Over Temperature, Short Circuit
NCP7805
Tube
-
0°C ~ 125°C (TJ)
Through Hole
35V
Fixed
TO-220-3
TO-220
-
RFQ