LP2985A-18DBVT
Texas Instruments
IC REG LINEAR 1.8V 150MA SOT23-5
स्टॉक में56140 pcs
95 µA
Positive
Enable
1.8V
-
1
150mA
0.58V @ 150mA
45dB (1kHz)
Over Current, Over Temperature, Short Circuit
LP2985
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
2.5 mA
RFQ
NCP4682DMU28TCG
onsemi
IC REG LINEAR 2.8V 150MA 4UDFN
स्टॉक में7540 pcs
1.5 µA
Positive
Enable
2.8V
-
1
150mA
0.32V @ 150mA
30dB (1kHz)
Over Current
NCP4682
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
4-UDFN Exposed Pad
4-UDFN (1.0x1.0)
-
RFQ
LM317AT
Texas Instruments
IC REG LIN POS ADJ 1.5A TO220-3
स्टॉक में36334 pcs
10 mA
Positive
-
1.25V
37V
1
1.5A
-
80dB ~ 65dB (120Hz)
Over Current, Over Temperature, Short Circuit
LM317
Tube
-
-40°C ~ 125°C
Through Hole
40V
Adjustable
TO-220-3
TO-220-3
-
RFQ
TPS7B8450QWDRBRQ1
Texas Instruments
AUTOMOTIVE 150-MA, 40-V, LOW-DRO
स्टॉक में37200 pcs
26 µA
Positive
Enable
5V
-
1
150mA
0.225V @ 150mA
55dB (1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS7B8450
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C (TJ)
Surface Mount, Wettable Flank
40V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
-
RFQ
LD29150DT25R
STMicroelectronics
IC REG LINEAR 2.5V 1.5A DPAK
स्टॉक में53260 pcs
180 µA
Positive
-
2.5V
-
1
1.5A
0.7V @ 1.5A
70dB (120Hz)
Over Current, Over Temperature
LD29150
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
14V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
80 mA
RFQ
MCP1726-3302E/SN
Microchip Technology
IC REG LINEAR 3.3V 1A 8SOIC
स्टॉक में65280 pcs
220 µA
Positive
Enable, Power Good
3.3V
-
1
1A
0.5V @ 1A
54dB (100Hz)
Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
MCP1726
Tube
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
S-1206B27-M3T1G
ABLIC Inc.
IC REG LINEAR 2.7V 250MA SOT23-3
स्टॉक में85640 pcs
1.5 µA
Positive
-
2.7V
-
1
250mA
0.36V @ 100mA
-
Over Current
S-1206
Tape & Reel (TR)
S-1206
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
-
RFQ
MC79M05BDTRKG
onsemi
IC REG LINEAR -5V 500MA DPAK
स्टॉक में100780 pcs
-
Negative
-
-5V
-
1
500mA
1.1V @ 500mA (Typ)
66dB (120Hz)
Over Current, Over Temperature
MC79M05
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
-35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
ZXCL400E5TA
Diodes Incorporated
IC REG LINEAR 4V 150MA SOT23-5
स्टॉक में16130 pcs
50 µA
Positive
Enable
4V
-
1
150mA
0.28V @ 100mA
-
Over Current, Over Temperature
ZXCL400
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
120 µA
RFQ
TPS79318DBVT
Texas Instruments
IC REG LINEAR 1.8V 200MA SOT23-5
स्टॉक में43510 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
LP3964EMP-2.5
Texas Instruments
IC REG LIN 2.5V 800MA SOT223-5
स्टॉक में21201 pcs
9 mA
Positive
Enable
2.5V
-
1
800mA
0.35V @ 800mA
-
Over Current, Over Temperature, Short Circuit
LP3964
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
7V
Fixed
TO-261-5, TO-261AB
SOT-223-5
15 mA
RFQ
UA79M05CKCS
Texas Instruments
IC REG LINEAR -5V 500MA TO220-3
स्टॉक में79250 pcs
-
Negative
-
-5V
-
1
500mA
1.1V @ 350mA
60dB (120Hz)
Over Current, Over Temperature, Short Circuit
UA79M05
Tube
-
0°C ~ 125°C
Through Hole
-25V
Fixed
TO-220-3
TO-220-3
-
RFQ
S-1170B29UC-OTOTFG
ABLIC Inc.
IC REG LINEAR 2.9V 800MA SOT89-5
स्टॉक में55880 pcs
1 µA
Positive
Enable
2.9V
-
1
800mA
0.22V @ 300mA
70dB (1kHz)
Over Current, Thermal Shutdown
S-1170
Tape & Reel (TR)
S-1170
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
SOT-89-5/6
SOT-89-5
160 µA
RFQ
MIC5258-1.2YM5-TR
Microchip Technology
IC REG LINEAR 1.2V 150MA SOT23-5
स्टॉक में95510 pcs
150 µA
Positive
Enable, Power Good
1.2V
-
1
150mA
-
-
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
MIC5258
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
AP1122EG-13
Diodes Incorporated
IC REG LINEAR 1.2V 1A SOT223-3
स्टॉक में15240 pcs
10 mA
Positive
-
1.2V
-
1
1A
1.3V @ 1A
60dB (120Hz)
Over Current, Over Temperature
-
Tape & Reel (TR)
-
0°C ~ 125°C (TJ)
Surface Mount
12V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
MCP1700T-1202E/MB
Microchip Technology
IC REG LINEAR 1.2V 200MA SOT89-3
स्टॉक में72270 pcs
4 µA
Positive
-
1.2V
-
1
200mA
0.35V @ 200mA
44dB (100Hz)
Over Current, Over Temperature, Short Circuit
MCP1700
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
TO-243AA
SOT-89-3
-
RFQ
ADP7118ARDZ-R7
Analog Devices Inc.
IC REG LIN POS ADJ 200MA 8SOIC
स्टॉक में25154 pcs
140 µA
Positive
Enable, Soft Start
1.2V
19.58V
1
200mA
0.42V @ 200mA
88dB ~ 50dB (10kHz ~ 1MHz)
Over Current, Over Temperature
ADP7118
Tape & Reel (TR)
-
-40°C ~ 125°C (TA)
Surface Mount
20V
Adjustable
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SOIC-EP
320 µA
RFQ
NCP585DSN09T1G
onsemi
IC REG LINEAR 0.9V 300MA SOT23-5
स्टॉक में12500 pcs
90 µA
Positive
Enable
0.9V
-
1
300mA
0.78V @ 300mA
75dB ~ 65dB (120Hz ~ 10kHz)
Over Current
NCP585
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
111 µA
RFQ
TLV71318PDQNR
Texas Instruments
IC REG LINEAR 1.8V 150MA 4X2SON
स्टॉक में323380 pcs
75 µA
Positive
Enable
1.8V
-
1
150mA
0.7V @ 150mA
70dB ~ 55dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO)
TLV71318
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
TC1055-3.3VCT713
Microchip Technology
IC REG LINEAR 3.3V 100MA SOT23-5
स्टॉक में126510 pcs
80 µA
Positive
Enable
3.3V
-
1
100mA
0.25V @ 100mA
64dB (1kHz)
Over Current, Over Temperature
TC1055
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TPS77525MPWPREP
Texas Instruments
IC REG LIN 2.5V 500MA 20HTSSOP
स्टॉक में10682 pcs
125 µA
Positive
Enable, Reset
2.5V
-
1
500mA
-
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
TPS77525
Tape & Reel (TR)
-
-55°C ~ 125°C
Surface Mount
10V
Fixed
20-PowerTSSOP (0.173", 4.40mm Width)
20-HTSSOP
-
RFQ
TPS77030DBVR
Texas Instruments
IC REG LINEAR 3V 50MA SOT23-5
स्टॉक में70430 pcs
28 µA
Positive
Enable
3V
-
1
50mA
0.12V @ 50mA
60dB (1kHz)
Over Current, Over Temperature, Reverse Polarity
TPS77030
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
ADP3333ARM-3.3-RL
Analog Devices Inc.
IC REG LDO 3.3V 300MA 8-MSOP
स्टॉक में13856 pcs
100 µA
Positive
Shutdown
3.3V
-
1
300mA
0.23V @ 300mA
-
Over Current, Over Temperature
ADP3333
Bulk
anyCAP®
-40°C ~ 85°C (TA)
Surface Mount
12V
Fixed
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-MSOP
5.5 mA
RFQ
SPX2945M3-L-5-0
MaxLinear, Inc.
IC REG LINEAR 5V 400MA SOT223
स्टॉक में13730 pcs
300 µA
Positive
-
5V
-
1
400mA
0.7V @ 400mA
31dB (100kHz)
Over Current, Over Temperature
-
Tube
-
-40°C ~ 85°C
Surface Mount
26V
Fixed
TO-261-4, TO-261AA
SOT-223-3
25 mA
RFQ
FAN1117AT
Fairchild Semiconductor
IC REG LINEAR POS ADJ 1A TO220-3
स्टॉक में63430 pcs
-
Positive
-
1.25V
18V
1
1A
1.2V @ 1A
72dB (120Hz)
Over Current, Over Temperature
-
Tube
-
0°C ~ 125°C
Through Hole
18V
Adjustable
TO-220-3
TO-220-3
-
RFQ
SPX1582T5-L-2-5/TR
MaxLinear, Inc.
IC REG LINEAR 2.5V 3A TO263-5
स्टॉक में7940 pcs
-
Positive
-
2.5V
-
1
3A
0.5V @ 3A
80dB (120Hz)
Over Current, Over Temperature, Reverse Polarity, Transient Voltage
-
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
6V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
TO-263-5
-
RFQ
RT9083-18GJ5
Richtek USA Inc.
IC LDO 30UAIQ 250MA TSOT23-5
स्टॉक में313090 pcs
50 µA
Positive
Current Limit, Enable
1.8V
-
1
250mA
0.8V @ 250mA
-
Over Current, Over Temperature
-
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
TPS7A2012PDBVR
Texas Instruments
IC REG LINEAR 1.2V 300MA SOT23-5
स्टॉक में210980 pcs
15 µA
Positive
Enable
1.2V
-
1
300mA
0.355V @ 300mA
65dB ~ 40dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS7A2012
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
2 mA
RFQ
LF90ABPT-TR
STMicroelectronics
IC REG LINEAR 9V 500MA PPAK
स्टॉक में5560 pcs
1.5 mA
Positive
Enable
9V
-
1
500mA
0.7V @ 500mA
71dB ~ 56dB (120Hz ~ 10kHz)
Over Current, Over Temperature
LF90
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
TO-252-5, DPak (4 Leads + Tab), TO-252AD
PPAK
12 mA
RFQ
NCV47711PDAJR2G
onsemi
IC REG LIN POS ADJ 350MA 8SOIC
स्टॉक में36376 pcs
230 µA
Positive
Enable
5V
20V
1
350mA
0.5V @ 150mA
70dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
NCV47711
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C
Surface Mount
40V
Adjustable
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SOIC-EP
50 mA
RFQ
AP7365-20SNG-7
Diodes Incorporated
IC REG LINEAR 2V 600MA 6DFN2020
स्टॉक में272710 pcs
80 µA
Positive
Enable
2V
-
1
600mA
0.4V @ 600mA
65dB (1kHz)
Over Current, Over Temperature
AP7365
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
6-UDFN Exposed Pad
U-DFN2020-6
-
RFQ
L7815CT
STMicroelectronics
IC REG LINEAR 15V 1.5A TO3
स्टॉक में5860 pcs
8 mA
Positive
-
15V
-
1
1.5A
2V @ 1A (Typ)
54dB (120Hz)
Over Temperature, Short Circuit
L7815
Bulk
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-204AA, TO-3
TO-3
-
RFQ
BD25IC0WHFV-GTR
Rohm Semiconductor
IC REG LINEAR 2.5V 1A 6HVSOF
स्टॉक में174270 pcs
0.25 mA
Positive
Enable
2.5V
-
1
1A
0.6V @ 1A
-
Over Current, Over Temperature, Soft Start
BD25IC0
Tape & Reel (TR)
-
-25°C ~ 85°C
Surface Mount
5.5V
Fixed
6-SMD, Flat Lead Exposed Pad
6-HVSOF
500 µA
RFQ
LP2985A-28DBVT
Texas Instruments
IC REG LINEAR 2.8V 150MA SOT23-5
स्टॉक में50490 pcs
95 µA
Positive
Enable
2.8V
-
1
150mA
0.58V @ 150mA
45dB (1kHz)
Over Current, Over Temperature, Short Circuit
LP2985
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
2.5 mA
RFQ
RP115L271D-E2
Nisshinbo Micro Devices Inc.
IC REG LIN 2.7V 500MA DFN1216-8
स्टॉक में57370 pcs
160 µA
Positive
Enable
2.7V
-
1
500mA
0.09V @ 500mA
75dB (1kHz)
Over Current, Over Temperature, Reverse Current
RP115
Tape & Reel (TR)
RP115x
-40°C ~ 85°C (TA)
Surface Mount
5.25V
Fixed
8-XFDFN Exposed Pad
DFN1216-8
-
RFQ
BA038LBSG2-TR
Rohm Semiconductor
IC REG LINEAR 3.8V 150MA SMP5
स्टॉक में6820 pcs
15 µA
Positive
Enable
3.8V
-
1
150mA
0.15V @ 50mA
66dB ~ 56dB (400Hz)
Over Current, Over Temperature
BA038
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
7V
Fixed
SC-74A, SOT-753
SMP5
-
RFQ
MAX667CSA+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 250MA 8SOIC
स्टॉक में9071 pcs
35 µA
Positive
Dropout Detector, Enable, Low Battery Detection
1.3V (5V)
16V
1
250mA
0.35V @ 200mA
-
-
MAX667
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
16.5V
Adjustable (Fixed)
8-SOIC (0.154', 3.90mm Width)
8-SOIC
20 mA
RFQ
RP131H181D-T1-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 1.8V 1A SOT89-5
स्टॉक में76870 pcs
90 µA
Positive
Enable
1.8V
-
1
1A
1.1V @ 1A
70dB (1kHz)
Over Current, Over Temperature
RP131
Tape & Reel (TR)
RP131x
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
SOT-89-5/6
SOT-89-5
-
RFQ
MIC5233-3.0BM5
Micrel Inc.
IC REG LINEAR LDO
स्टॉक में70320 pcs
30 µA
Positive
Enable
3V
-
1
100mA
0.45V @ 100mA
-
Over Current, Over Temperature, Reverse Polarity
-
Bulk
-
-40°C ~ 125°C
Surface Mount
36V
Fixed
SC-74A, SOT-753
SOT-23-5
2 mA
RFQ
NCP1086D2T-33R4G
onsemi
IC REG LINEAR 3.3V 1.5A D2PAK-3
स्टॉक में3790 pcs
10 mA
Positive
-
3.3V
-
1
1.5A
1.4V @ 1.5A
80dB (120Hz)
Over Current, Over Temperature
NCP1086
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
7V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
D2PAK-3
-
RFQ
TPS7A2533DRVR
Texas Instruments
IC REG LINEAR 3.3V 300MA 6WSON
स्टॉक में101210 pcs
4.5 µA
Positive
Enable, Power Good
3.3V
-
1
300mA
0.21V @ 300mA
75dB ~ 52dB (10Hz ~ 1kHz)
Over Current, Over Temperature
TPS7A2533
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
18V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
-
RFQ
IRU1030-33CMTR
Infineon Technologies
IC REG LINEAR 3.3V 3A TO263
स्टॉक में14480 pcs
10 mA
Positive
-
3.3V
-
1
3A
1.3V @ 3A
70dB (120Hz)
Over Current, Over Temperature
IRU1030-33CM
Tape & Reel (TR)
-
0°C ~ 150°C
Surface Mount
7V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
TO-263
-
RFQ
MIC29310-3.3WU
Microchip Technology
IC REG LINEAR 3.3V 3A TO263-3
स्टॉक में14341 pcs
20 mA
Positive
-
3.3V
-
1
3A
1V @ 3A
-
Over Current, Over Temperature, Reverse Polarity
MIC29310
Tube
-
0°C ~ 125°C
Surface Mount
16V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
TO-263-3
150 mA
RFQ
MIC5219YMT-TR
Microchip Technology
IC REG LIN POS ADJ 500MA 6TMLF
स्टॉक में31900 pcs
8 µA
Positive
Enable
Adjustable
-
1
500mA
0.6V @ 500mA
75dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
MIC5219
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
12V
Adjustable
6-UDFN Exposed Pad, 6-TMLF®
6-TMLF® (2x2)
-
RFQ
PAM3101DAB280
Diodes Incorporated
IC REG LINEAR 2.8V 300MA SOT23-5
स्टॉक में15150 pcs
90 µA
Positive
Enable
2.8V
-
1
300mA
0.45V @ 300mA
-
Over Current, Over Temperature, Short Circuit
PAM3101
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
ISL9011AIRMNZ
Renesas Electronics America Inc
IC REG LINEAR 3V/3.3V 10DFN
स्टॉक में28527 pcs
40 µA
Positive
Enable
3V, 3.3V
-
2
150mA, 300mA
0.2V @ 150mA, 0.325V @ 300mA
-
Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
ISL9011
Tube
-
-40°C ~ 85°C
Surface Mount
6.5V
Fixed
10-VFDFN Exposed Pad
10-DFN (3x3)
60 µA
RFQ
BA18BC0FP-E2
Rohm Semiconductor
IC REG LINEAR 1.8V 1A TO252-3
स्टॉक में42130 pcs
0.5 mA
Positive
-
1.8V
-
1
1A
-
-
Over Current, Over Temperature
BA18BC0
Tape & Reel (TR)
-
-40°C ~ 105°C
Surface Mount
16V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252
900 µA
RFQ
LDLN025J2925R
STMicroelectronics
IC REG LIN 2.925V 250MA 4FLIPCHP
स्टॉक में198620 pcs
25 µA
Positive
Enable
2.925V
-
1
250mA
0.2V @ 250mA
80dB ~ 60dB (100Hz ~ 100KHz)
Over Current, Over Temperature, Short Circuit, Soft Start
LDLN025
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XFBGA, FCBGA
4-FlipChip
425 µA
RFQ
TPS76718QPWPR
Texas Instruments
IC REG LINEAR 1.8V 1A 20HTSSOP
स्टॉक में18277 pcs
125 µA
Positive
Enable, Reset
1.8V
-
1
1A
-
60dB (1kHz)
Over Current, Over Temperature, Reverse Polarity
TPS76718
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
20-PowerTSSOP (0.173", 4.40mm Width)
20-HTSSOP
-
RFQ
AP7343-30W5-7
Diodes Incorporated
IC REG LINEAR 3V 300MA SOT25
स्टॉक में362470 pcs
60 µA
Positive
Enable
3V
-
1
300mA
0.29V @ 300mA
75dB (1kHz)
Over Current
AP7343
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
SC-74A, SOT-753
SOT-25
-
RFQ