BAJ2CC0WFP-E2
Rohm Semiconductor
IC REG LINEAR 12V 1A TO252-5
במלאי31830 pcs
2.5 mA
Positive
Enable
12V
-
1
1A
-
55dB (120Hz)
Over Current, Over Temperature, Over Voltage
BAJ2CC0
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
25V
Fixed
TO-252-5, DPak (4 Leads + Tab), TO-252AD
TO-252-5
5 mA
RFQ
MIC68200-1.8YML
Micrel Inc.
IC REG LINEAR 2A SEQUENCING LDO
במלאי8630 pcs
15 mA
Positive
Enable, Power On Reset
1.8V or Tracking
-
1
1A
0.4V @ 1A
-
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
10-VFDFN Exposed Pad, 10-MLF®
10-MLF® (3x3)
80 mA
RFQ
MC79L24ABPG
onsemi
IC REG LINEAR -24V 100MA TO92-3
במלאי225990 pcs
-
Negative
-
-24V
-
1
100mA
1.7V @ 40mA (Typ)
47dB (120Hz)
Over Temperature, Short Circuit
MC79L24
Bulk
-
-40°C ~ 125°C
Through Hole
-40V
Fixed
TO-226-3, TO-92-3 Long Body
TO-92 (TO-226)
-
RFQ
RT9013-28GY
Richtek USA Inc.
IC REG LINEAR 2.8V 500MA SC82
במלאי13900 pcs
50 µA
Positive
Enable
2.8V
-
1
500mA
0.4V @ 500mA
50dB (10kHz)
Over Current, Over Temperature
RT9013
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SC-82
SC-82
-
RFQ
TLV76612QWDRBRQ1
Texas Instruments
AUTOMOTIVE, ADJUSTABLE- AND FIXE
במלאי93940 pcs
95 µA
Positive
Enable
1.2V
-
1
500mA
0.75V @ 500mA
70dB ~ 46dB (1kHz ~ 1MHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
-
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C (TJ)
Surface Mount, Wettable Flank
16V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
-
RFQ
MIC5239YM
Microchip Technology
IC REG LIN POS ADJ 500MA 8SOIC
במלאי11736 pcs
45 µA
Positive
Enable
1.24V
20V
1
500mA
0.35V @ 500mA (Typ)
-
Over Current, Over Temperature, Over Voltage, Reverse Polarity
MIC5239
Tube
-
-40°C ~ 125°C
Surface Mount
30V
Adjustable
8-SOIC (0.154', 3.90mm Width)
8-SOIC
15 mA
RFQ
MIC5330-PNYML
Micrel Inc.
DUAL, 300MA UCAP LDO
במלאי87830 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
AP2121AK-2.8TRE1
Diodes Incorporated
IC REG LINEAR 2.8V 200MA SOT23-5
במלאי250280 pcs
50 µA
Positive
Enable
2.8V
-
1
200mA
0.5V @ 200mA
70dB (1kHz)
Over Current
AP2121
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
MAX1793EUE33+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 1A 16TSSOP
במלאי19725 pcs
200 µA
Positive
Enable, Reset
1.25V (3.3V)
5V
1
1A
0.35V @ 1A
-
Over Current, Over Temperature, Short Circuit
MAX1793
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Adjustable (Fixed)
16-TSSOP (0.173', 4.40mm Width) Exposed Pad
16-TSSOP-EP
-
RFQ
NCV8664CST50T3G
onsemi
IC REG LINEAR 5V 150MA SOT223
במלאי45710 pcs
29 µA
Positive
-
5V
-
1
150mA
0.6V @ 150mA
67dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
NCV8664
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C (TJ)
Surface Mount
45V
Fixed
TO-261-4, TO-261AA
SOT-223 (TO-261)
30 µA
RFQ
BD3931HFP-TR
Rohm Semiconductor
IC REG LINEAR 5V 500MA HRP-5
במלאי14904 pcs
30 µA
Positive
-
5V
-
1
500mA
1.5V @ 200mA
55dB (120Hz)
Over Current, Over Temperature, Over Voltage, Reverse Polarity
BD3931
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
25V
Fixed
HRP-5 (5 Leads + Tab)
HRP-5
40 µA
RFQ
ADP1754ACPZ-1.3-R7
Analog Devices Inc.
IC REG LINEAR 1.3V 1.2A 16LFCSP
במלאי14186 pcs
800 µA
Positive
Enable, Power Good, Soft Start
1.3V
-
1
1.2A
0.2V @ 1.2A
-
Over Current, Over Temperature, Short Circuit, Reverse Polarity, UVLO
ADP1754
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
3.6V
Fixed
16-WQFN Exposed Pad, CSP
16-LFCSP (4x4)
1.4 mA
RFQ
FAN1117ASX
onsemi
IC REG LINEAR POS ADJ 1A SOT223
במלאי9910 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
MIC5209-5.0YS-TR
Microchip Technology
IC REG LINEAR 5V 500MA SOT223-3
במלאי21909 pcs
170 µA
Positive
-
5V
-
1
500mA
0.6V @ 500mA
75dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
MIC5209
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
TO-261-4, TO-261AA
SOT-223-3
25 mA
RFQ
LT3015IT-3.3#PBF
Analog Devices Inc.
IC REG LINEAR -3.3V 1.5A TO220-5
במלאי6335 pcs
2.4 mA
Negative
Enable
-3.3V
-
1
1.5A
0.68V @ 1.5A
61dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3015
Tube
-
-40°C ~ 125°C
Through Hole
-30V
Fixed
TO-220-5
TO-220-5
70 mA
RFQ
LP3855EMP-ADJ
Texas Instruments
IC REG LIN POS ADJ 1.5A SOT223-5
במלאי8060 pcs
3 mA
Positive
Enable
1.23V
6.6V
1
1.5A
0.435V @ 1.5A
73dB ~ 57dB (120Hz)
Over Current, Over Temperature, Short Circuit
LP3855
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
7V
Adjustable
TO-261-5, TO-261AB
SOT-223-5
10 mA
RFQ
NCP508SQ25T1G
onsemi
IC REG LINEAR 2.5V 50MA SC88A
במלאי9260 pcs
1 µA
Positive
Enable
2.5V
-
1
50mA
0.18V @ 50mA (Typ)
70dB (1kHz)
Over Current, Over Temperature
NCP508
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
7V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-88A (SC-70-5/SOT-353)
1.9 mA
RFQ
TPS799285YZUR
Texas Instruments
IC REG LINEAR 2.85V 200MA 5DSBGA
במלאי128770 pcs
60 µA
Positive
Enable
2.85V
-
1
200mA
0.18V @ 200mA
70dB ~ 38dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS799285
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
5-UFBGA, DSBGA
5-DSBGA
-
RFQ
NCP103AMX120TCG
onsemi
IC REG LINEAR 1.2V 150MA 4UDFN
במלאי8780 pcs
95 µA
Positive
Enable
1.2V
-
1
150mA
-
75dB (1kHz)
Over Current, Over Temperature
NCP103
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
4-UDFN Exposed Pad
4-UDFN (1.0x1.0)
-
RFQ
NJM79L18A
Nisshinbo Micro Devices Inc.
IC REG LINEAR -18V 100MA TO92-3
במלאי11490 pcs
6.5 mA
Negative
-
-18V
-
1
100mA
-
60dB (120Hz)
Over Temperature, Short Circuit
-
Tube
-
-40°C ~ 85°C
Through Hole
-40V
Fixed
TO-226-3, TO-92-3 (TO-226AA)
TO-92-3
-
RFQ
RP105L101D5-TR
Nisshinbo Micro Devices Inc.
IC REG LIN 1.05V 400MA DFN1212-5
במלאי80080 pcs
40 µA
Positive
Enable
1.05V
-
1
400mA
0.17V @ 400mA
80dB (1kHz)
Over Current, Under Voltage Lockout (UVLO)
RP105
Tape & Reel (TR)
RP105x
-40°C ~ 85°C (TA)
Surface Mount
5.25V
Fixed
4-XDFN Exposed Pad
DFN1212-5
-
RFQ
AZ1117CH-1.2TRG1
Diodes Incorporated
IC REG LINEAR 1.2V 1A SOT223
במלאי337760 pcs
6 mA
Positive
-
1.2V
-
1
1A
1.3V @ 800mA
70dB (120Hz)
Thermal Shutdown
AZ1117
Tape & Reel (TR)
AZ1117C
-20°C ~ 125°C (TJ)
Surface Mount
15V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
ADP3338AKCZ-3.3RL7
Analog Devices Inc.
IC REG LINEAR 3.3V 1A SOT223-3
במלאי10627 pcs
190 µA
Positive
-
3.3V
-
1
1A
0.4V @ 1A
-
Over Current, Over Temperature
ADP3338
Tape & Reel (TR)
anyCAP®
-40°C ~ 85°C (TA)
Surface Mount
8V
Fixed
TO-261-4, TO-261AA
SOT-223-3
30 mA
RFQ
BD3572HFP-TR
Rohm Semiconductor
IC REG LIN POS ADJ 500MA HRP-5
במלאי16956 pcs
30 µA
Positive
Enable
2.8V
12V
1
500mA
0.48V @ 200mA
55dB (120Hz)
Over Current, Over Temperature
BD3572
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
36V
Adjustable
HRP-5 (5 Leads + Tab)
HRP-5
50 µA
RFQ
MCP1725T-ADJE/SN
Microchip Technology
IC REG LIN POS ADJ 500MA 8SOIC
במלאי58000 pcs
220 µA
Positive
Enable, Power Good
0.8V
5V
1
500mA
0.35V @ 500mA
60dB (100Hz)
Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
MCP1725
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Adjustable
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
BD00GA5WEFJ-E2
Rohm Semiconductor
IC REG LIN POS ADJ 500MA 8HTSOP
במלאי97770 pcs
0.6 mA
Positive
Enable
1.5V
13V
1
500mA
0.9V @ 500mA
-
Over Current, Over Temperature, Soft Start
BD00GA5
Tape & Reel (TR)
-
-25°C ~ 85°C
Surface Mount
14V
Adjustable
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-HTSOP-J
900 µA
RFQ
UA78L08ACLPR
Texas Instruments
IC REG LINEAR 8V 100MA TO92-3
במלאי181500 pcs
-
Positive
-
8V
-
1
100mA
1.7V @ 40mA
46dB (120Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
UA78L08
Tape & Reel (TR)
-
0°C ~ 125°C
Through Hole
23V
Fixed
TO-226-3, TO-92-3 (TO-226AA) Formed Leads
TO-92-3
-
RFQ
CS8221YDFR8G
onsemi
IC REG LINEAR 5V 100MA 8SOIC
במלאי14230 pcs
120 µA
Positive
-
5V
-
1
100mA
0.6V @ 100mA
75dB (120Hz)
Over Temperature, Over Voltage, Reverse Polarity, Short Circuit
CS8221
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
26V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
20 mA
RFQ
AP130-18YL-13
Diodes Incorporated
IC REG LINEAR 1.8V 300MA SOT89-3
במלאי4770 pcs
100 µA
Positive
-
1.8V
-
1
300mA
0.5V @ 300mA
58dB (100Hz)
Over Current, Over Temperature, Short Circuit
AP130
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
TO-243AA
SOT-89-3
-
RFQ
L78M12CV
STMicroelectronics
IC REG LINEAR 12V 500MA TO220AB
במלאי124920 pcs
6 mA
Positive
-
12V
-
1
500mA
-
55dB (120Hz)
Over Current, Over Temperature, Short Circuit
L78M12
Tube
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220
-
RFQ
AP1084TL-U
Diodes Incorporated
IC REG LINEAR POS ADJ 5A TO220-3
במלאי7710 pcs
10 mA
Positive
-
1.25V
10.6V
1
5A
1.4V @ 5A
-
Over Current, Over Temperature
AP1084
Tube
-
0°C ~ 125°C (TJ)
Through Hole
12V
Adjustable
TO-220-3
TO-220-3
-
RFQ
ISL9003AIEFZ-T
Renesas Electronics America Inc
IC REG LINEAR 2.5V 150MA SC70-5
במלאי35070 pcs
40 µA
Positive
Enable
2.5V
-
1
150mA
0.4V @ 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
LT1521CMS8#PBF
Analog Devices Inc.
IC REG LIN POS ADJ 300MA 8MSOP
במלאי9972 pcs
25 µA
Positive
Enable
3.8V
20V
1
300mA
0.75V @ 300mA
58dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1521
Tube
-
0°C ~ 125°C
Surface Mount
20V
Adjustable
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
12 mA
RFQ
NCP2860DM277R2
onsemi
IC REG LINEAR 2.77V 300MA MICRO8
במלאי7070 pcs
700 µA
Positive
Enable, Fault Output
2.77V
-
1
300mA
0.25V @ 300mA
60dB (1kHz)
Over Temperature, Short Circuit, Soft Start
NCP2860
Tape & Reel (TR)
-
-25°C ~ 85°C
Surface Mount
6V
Fixed
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
-
RFQ
REG113NA-5/3K
Texas Instruments
IC REG LINEAR 5V 400MA SOT23-5
במלאי19101 pcs
500 µA
Positive
Enable
5V
-
1
400mA
0.41V @ 400mA
65dB (120Hz)
Over Current, Over Temperature
REG113
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
1 mA
RFQ
RT9011-GSGQWC
Richtek USA Inc.
IC REG LINEAR 1.8V/3.3V 6WDFN
במלאי8350 pcs
80 µA
Positive
Enable
1.8V, 3.3V
-
2
300mA, 300mA
0.33V @ 300mA, 0.33V @ 300mA
70dB ~ 38dB (100Hz ~ 300kHz)
Over Current, Over Temperature, Short Circuit
RT9011
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
6-WFDFN Exposed Pad
6-WDFN (1.6x1.6)
-
RFQ
L78M08ACDT-TR
STMicroelectronics
IC REG LINEAR 8V 500MA DPAK
במלאי14360 pcs
6 mA
Positive
-
8V
-
1
500mA
-
56dB (120Hz)
Over Current, Over Temperature, Short Circuit
L78M08
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
RT9179AGS
Richtek USA Inc.
IC REG LINEAR POS ADJ 500MA 8SOP
במלאי114840 pcs
150 µA
Positive
Enable
1.175V
4.5V
1
500mA
0.4V @ 500mA
-
Over Current, Over Temperature
RT9179
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
8-SOIC (0.154", 3.90mm Width)
8-SOP
-
RFQ
LX8117A-33CST
Microsemi Corporation
IC REG LIN 3.3V 1A SOT223 POWER
במלאי14660 pcs
10 mA
Positive
-
3.3V
-
1
1A
1.3V @ 1A
75dB (120Hz)
Over Current, Short Circuit
LX8117
Tube
-
0°C ~ 125°C
Surface Mount
12V
Fixed
TO-261-4, TO-261AA
SOT-223, Power
-
RFQ
LD1117DT18CTR
STMicroelectronics
IC REG LINEAR 1.8V 800MA DPAK
במלאי127490 pcs
10 mA
Positive
-
1.8V
-
1
800mA
1.3V @ 800mA
75dB (120Hz)
Over Current, Over Temperature
LD1117
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
15V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
KA7924TU
onsemi
IC REG LINEAR -24V 1A TO220-3
במלאי9940 pcs
6 mA
Negative
-
-24V
-
1
1A
2V @ 1A (Typ)
60dB (120Hz)
Over Temperature, Short Circuit
KA79
Tube
-
0°C ~ 125°C
Through Hole
-35V
Fixed
TO-220-3
TO-220-3
-
RFQ
LT1964IS5-5#TRPBF
Analog Devices Inc.
IC REG LINEAR -5V 200MA TSOT23-5
במלאי10469 pcs
-
Negative
Enable
-5V
-
1
200mA
0.49V @ 200mA
54dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1964
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
-20V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
LP3966ET-ADJ
Texas Instruments
IC REG LINEAR POS ADJ 3A TO220-5
במלאי8987 pcs
9 mA
Positive
Enable
1.216V
5.1V
1
3A
1.2V @ 3A
-
Over Current, Over Temperature, Short Circuit
LP3966
Tube
-
-40°C ~ 125°C
Through Hole
7V
Adjustable
TO-220-5 Formed Leads
TO-220-5
15 mA
RFQ
TPS73625DCQRG4
Texas Instruments
IC REG LIN 2.5V 400MA SOT223-6
במלאי15660 pcs
550 µA
Positive
Enable
2.5V
-
1
400mA
0.2V @ 400mA
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Reverse Polarity
TPS736
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-223-6
SOT-223-6
1 mA
RFQ
TPS75918KTTR
Texas Instruments
IC REG LINEAR 1.8V 7.5A DDPAK
במלאי6320 pcs
200 µA
Positive
Enable, Power Good
1.8V
-
1
7.5A
-
58dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS759
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
DDPAK/TO-263-5
-
RFQ
RT9068-33GSP
Richtek USA Inc.
IC REG LINEAR 3.3V 50MA 8SOP
במלאי24985 pcs
40 µA
Positive
Enable
3.3V
-
1
50mA
0.23V @ 50mA
65dB (50mA)
Over Current, Over Temperature, Reverse Polarity
RT9068
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
60V
Fixed
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SOP-EP
-
RFQ
S-817B38AMC-CXBT2G
ABLIC Inc.
IC REG LINEAR 3.8V 50MA SOT23-5
במלאי73710 pcs
2.5 µA
Positive
-
3.8V
-
1
50mA
0.35V @ 10mA
-
-
S-817
Tape & Reel (TR)
S-817
-40°C ~ 85°C (TA)
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
LT1761ES5-3#TRPBF
Analog Devices Inc.
IC REG LINEAR 3V 100MA TSOT23-5
במלאי23056 pcs
-
Positive
Enable
3V
-
1
100mA
0.45V @ 100mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1761
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
MP6401DGT-18AD3-LF-Z
Monolithic Power Systems Inc.
IC REG LINEAR 1.8V 300MA 6TQFN
במלאי16800 pcs
155 µA
Positive
Enable
1.8V
-
1
300mA
0.22V @ 300mA
57dB (1kHz)
Over Current, Over Temperature, Short Circuit
-
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
6-WDFN Exposed Pad
6-TQFN (2x2)
-
RFQ
LDLN025PU18R
STMicroelectronics
IC REG LINEAR 1.8V 250MA 4DFN
במלאי159220 pcs
25 µA
Positive
Enable
1.8V
-
1
250mA
0.25V @ 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-XDFN Exposed Pad
4-DFN (1x1)
425 µA
RFQ