FAN2502S25X
onsemi
IC REG LINEAR 2.5V 150MA SOT23-5
In stoc8060 pcs
50 µA
Positive
Enable
2.5V
-
1
150mA
0.18V @ 150mA
43dB (120Hz)
Over Temperature
FAN2502
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
MIC5303-2.8YMT-TR
Microchip Technology
IC REG LINEAR 2.8V 300MA 4TMLF
In stoc13810 pcs
120 µA
Positive
Enable
2.8V
-
1
300mA
0.2V @ 300mA
65dB ~ 42dB (1kHz ~ 20kHz)
Over Current, Over Temperature
MIC5303
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
4-VFDFN Exposed Pad, 4-TMLF®
4-TMLF® (1.2x1.6)
-
RFQ
RP150K001A-TR
Nisshinbo Micro Devices Inc.
IC REG LINEAR POS ADJ 300MA 8DFN
In stoc60850 pcs
33 µA
Positive
Enable
1.5V
3.3V
2
300mA, 300mA
1V @ 300mA
80dB (1kHz)
Over Current
RP150
Tape & Reel (TR)
RP150K
-40°C ~ 85°C
Surface Mount
5.25V
Adjustable
8-UFDFN Exposed Pad
DFN(PL)2020-8
-
RFQ
AZ1117S-ADJTRE1
Diodes Incorporated
IC REG LIN POS ADJ 1.25A TO263
In stoc9820 pcs
10 mA
Positive
-
1.25V
13.75V
1
1.25A
1.25V @ 1A
75dB (120Hz)
Thermal Shutdown
AZ1117
Tape & Reel (TR)
AZ1117
-40°C ~ 125°C (TJ)
Surface Mount
15V
Adjustable
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
TO-263
-
RFQ
S-1112B25MC-L6KTFG
ABLIC Inc.
IC REG LINEAR 2.5V 150MA SOT23-5
In stoc92440 pcs
1 µA
Positive
Enable
2.5V
-
1
150mA
0.29V @ 100mA
80dB (1kHz)
Over Current
S-1112
Tape & Reel (TR)
S-1112
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
90 µA
RFQ
LT1764AEQ#TRPBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 3A 5DDPAK
In stoc5681 pcs
1.5 mA
Positive
Enable
1.21V
20V
1
3A
0.66V @ 3A
63dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1764
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
20V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
5-DDPAK
200 mA
RFQ
TPS73718DRBR
Texas Instruments
IC REG LINEAR 1.8V 1A 8SON
In stoc33240 pcs
400 µA
Positive
Enable
1.8V
-
1
1A
0.5V @ 1A
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Reverse Polarity
TPS73718
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
8-VDFN Exposed Pad
8-SON (3x3)
1.3 mA
RFQ
R1501S050B-E2-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 5V 1A 6HSOP
In stoc41960 pcs
160 µA
Positive
Enable
5V
-
1
1A
0.9V @ 1A
60dB (1kHz)
Over Current, Over Temperature, Short Circuit
R1501
Tape & Reel (TR)
R1501x
-40°C ~ 105°C
Surface Mount
24V
Fixed
6-SOIC Variation (0.154", 3.90mm Width), 4 Leads + 2 Fins
6-HSOP-J
-
RFQ
TC1264-3.3VDB
Microchip Technology
IC REG LIN 3.3V 800MA SOT223-3
In stoc41450 pcs
130 µA
Positive
-
3.3V
-
1
800mA
1.4V @ 800mA
64dB (1kHz)
Over Current, Over Temperature
TC1264
Tube
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
TLV71729PDQNR
Texas Instruments
IC REG LINEAR 2.9V 150MA 4X2SON
In stoc273160 pcs
55 µA
Positive
Enable
2.9V
-
1
150mA
0.35V @ 150mA
70dB ~ 43dB (10Hz ~ 100kHz)
Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
TLV71729
Tape & Reel (TR)
-
-40°C ~ 85°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
TL750L05CLPR
Texas Instruments
IC REG LINEAR 5V 150MA TO92-3
In stoc90490 pcs
2 mA
Positive
-
5V
-
1
150mA
0.6V @ 150mA
65dB (120Hz)
Over Current, Over Temperature, Over Voltage, Reverse Polarity
TL750
Tape & Reel (TR)
-
0°C ~ 125°C
Through Hole
26V
Fixed
TO-226-3, TO-92-3 (TO-226AA) Formed Leads
TO-92-3
12 mA
RFQ
SP6260GEK-L/TR
Diodes Incorporated
IC REG LINEAR 3.3V 200MA SOT23-5
In stoc6310 pcs
50 µA
Positive
Enable
3.3V
-
1
200mA
0.5V @ 200mA
70dB (10kHz)
Over Current
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
MCP1703T-3002E/MB
Microchip Technology
IC REG LINEAR 3V 250MA SOT89-3
In stoc73420 pcs
5 µA
Positive
-
3V
-
1
250mA
0.975V @ 250mA
44dB (100Hz)
Over Current, Over Temperature, Short Circuit
MCP1703
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
TO-243AA
SOT-89-3
-
RFQ
LM2936MM-5.0
Texas Instruments
IC REG LINEAR 5V 50MA 8VSSOP
In stoc8560 pcs
9 µA
Positive
-
5V
-
1
50mA
0.4V @ 50mA
60dB (120Hz)
Over Temperature, Reverse Polarity, Short Circuit
LM2936
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
40V
Fixed
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-VSSOP
2.5 mA
RFQ
TPS76825QDR
Texas Instruments
IC REG LINEAR 2.5V 1A 8SOIC
In stoc20895 pcs
125 µA
Positive
Enable, Power Good
2.5V
-
1
1A
-
60dB (1kHz)
Over Current, Over Temperature, Reverse Polarity
TPS76825
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
8-SOIC (0.154", 3.90mm Width)
8-SOIC
-
RFQ
ADP160AUJZ-3.3-R7
Analog Devices Inc.
IC REG LINEAR 3.3V 150MA TSOT5
In stoc52090 pcs
1.25 µA
Positive
Enable
3.3V
-
1
150mA
0.225V @ 150mA
60dB ~ 50dB (100Hz ~ 1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
ADP160
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
65 µA
RFQ
S-L2985B33-H4T1
ABLIC Inc.
IC REG LINEAR 3.3V 150MA WLP-4B
In stoc4380 pcs
1 µA
Positive
Enable
3.3V
-
1
150mA
0.26V @ 100mA
80dB (1kHz)
Over Current
-
Tape & Reel (TR)
S-L2985
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
4-UFBGA, WLCSP
WLP-4B
90 µA
RFQ
MAX884CSA+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 200MA 8SOIC
In stoc4380 pcs
15 µA
Positive
Enable, Low Battery Detection
1.25V (3.3V)
11V
1
200mA
0.64V @ 200mA
-
Over Current, Over Temperature, Reverse Polarity
MAX884
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
11.5V
Adjustable (Fixed)
8-SOIC (0.154', 3.90mm Width)
8-SOIC
25 µA
RFQ
MAX8841ELT33+T
Analog Devices Inc./Maxim Integrated
IC REG LINEAR 3.3V 150MA 6UDFN
In stoc34320 pcs
90 µA
Positive
Enable
3.3V
-
1
150mA
0.12V @ 120mA (Typ)
72dB ~ 46dB (1kHz ~ 100kHz)
Over Current, Over Temperature
MAX8841
Cut Tape (CT)
-
-40°C ~ 85°C (TA)
Surface Mount
6V
Fixed
6-WFDFN
6-uDFN (1.5x1)
-
RFQ
NCP4682DSQ18T1G
onsemi
IC REG LINEAR 1.8V 150MA SC82AB
In stoc7240 pcs
1.5 µA
Positive
Enable
1.8V
-
1
150mA
0.65V @ 150mA
30dB (1kHz)
Over Current
NCP4682
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
SC-82A, SOT-343
SC-82AB
-
RFQ
FAN1616AS5X
Fairchild Semiconductor
IC REG LINEAR 5V 500MA SOT223-4
In stoc116220 pcs
-
Positive
-
5V
-
1
500mA
1.2V @ 500mA
72dB (120Hz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
18V
Fixed
TO-261-4, TO-261AA
SOT-223-4
-
RFQ
NCV2931AZ-5.0RAG
onsemi
IC REG LINEAR 5V 100MA TO92-3
In stoc9240 pcs
1 mA
Positive
-
5V
-
1
100mA
0.6V @ 100mA
90dB (120Hz)
Over Current, Over Temperature
NCV2931
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Through Hole
26V
Fixed
TO-226-3, TO-92-3 Long Body (Formed Leads)
TO-92 (TO-226)
30 mA
RFQ
REG101NA-3.3/250
Texas Instruments
IC REG LINEAR 3.3V 100MA SOT23-5
In stoc15340 pcs
500 µA
Positive
Enable
3.3V
-
1
100mA
0.13V @ 100mA
65dB (120Hz)
Over Current, Over Temperature
REG101
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
650 µA
RFQ
L4938ND013TR
STMicroelectronics
IC REG LINEAR POS ADJ 20SO
In stoc9120 pcs
-
Positive
Enable, Reset
5V, Tracking
-
2
50mA, 500mA
0.4V @ 50mA, 0.6V @ 500mA
-
Over Temperature, Short Circuit
L4938
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
25V
Adjustable (Fixed)
20-SOIC (0.295", 7.50mm Width)
20-SO
-
RFQ
RP110K331D-TR
Nisshinbo Micro Devices Inc.
IC REG LIN 3.3V 150MA DFN0808-4
In stoc159200 pcs
2 µA
Positive
Enable
3.3V
-
1
150mA
0.35V @ 150mA
-
Over Current
RP110
Tape & Reel (TR)
RP110x
-40°C ~ 85°C (TA)
Surface Mount
5.25V
Fixed
4-XFDFN Exposed Pad
DFN(PL)0808-4
-
RFQ
MC33269DR2
onsemi
IC REG LIN POS ADJ 800MA 8SOIC
In stoc9280 pcs
-
Positive
-
1.25V
18.65V
1
800mA
1.35V @ 800mA
55dB (120Hz)
Over Temperature, Short Circuit
MC33269
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Adjustable
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
MIC5236-3.3YMM
Microchip Technology
IC REG LINEAR 3.3V 150MA 8MSOP
In stoc14541 pcs
30 µA
Positive
Enable
3.3V
-
1
150mA
0.5V @ 150mA
-
Load Dump, Over Current, Over Temperature, Over Voltage, Reverse Polarity
MIC5236
Tube
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
5 mA
RFQ
NCP4586DMU50TCG
onsemi
IC REG LINEAR 5V 150MA 4UDFN
In stoc7530 pcs
58 µA
Positive
Enable
5V
-
1
150mA
0.37V @ 150mA
80dB (1kHz)
Over Current
NCP4586
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6.5V
Fixed
4-UDFN Exposed Pad
4-UDFN (1.0x1.0)
-
RFQ
LP3856ES-2.5
Texas Instruments
IC REG LIN 2.5V 3A DDPAK/TO263-5
In stoc16200 pcs
4 mA
Positive
Enable
2.5V
-
1
3A
0.6V @ 3A
73dB ~ 57dB (120Hz)
Over Current, Over Temperature, Short Circuit
LP3856
Tube
-
-40°C ~ 125°C
Surface Mount
7V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
DDPAK/TO-263-5
10 mA
RFQ
MC33275DT-2.5RKG
onsemi
IC REG LINEAR 2.5V 300MA DPAK
In stoc127460 pcs
200 µA
Positive
-
2.5V
-
1
300mA
0.5V @ 300mA
75dB (120Hz)
Over Current, Over Temperature
MC33275
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
13V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
TPS70633DRVR
Texas Instruments
IC REG LINEAR 3.3V 150MA 6WSON
In stoc78940 pcs
2.55 µA
Positive
Enable
3.3V
-
1
150mA
1.54V @ 150mA
80dB ~ 52dB (10Hz ~ 1kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS706
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
350 µA
RFQ
MAX1935ETA+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 500MA 8TDFN
In stoc16027 pcs
400 µA
Positive
Enable, Power Good
0.8V
4.5V
1
500mA
0.275V @ 500mA
-
Over Current, Over Temperature, Short Circuit
MAX1935
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Adjustable
8-WDFN Exposed Pad
8-TDFN (3x3)
-
RFQ
LD49300PT08R
STMicroelectronics
IC REG LINEAR POS ADJ 3A PPAK
In stoc7940 pcs
4 mA
Positive
Enable
0.8V
4.5V
1
3A
0.4V @ 3A
68dB (120Hz)
Over Current, Over Temperature
LD49300
Cut Tape (CT)
-
-25°C ~ 125°C
Surface Mount
5.5V
Adjustable
TO-252-5, DPak (4 Leads + Tab), TO-252AD
PPAK
6 mA
RFQ
TLV71721PDQNR
Texas Instruments
IC REG LINEAR 2.1V 150MA 4X2SON
In stoc335440 pcs
55 µA
Positive
Enable
2.1V
-
1
150mA
0.35V @ 150mA
70dB ~ 43dB (10Hz ~ 100kHz)
Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
TLV71721
Tape & Reel (TR)
-
-40°C ~ 85°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
NJM2390U-TE1
Nisshinbo Micro Devices Inc.
IC REG LIN POS ADJ 100MA SOT89-3
In stoc155950 pcs
4 µA
Positive
-
2.465V
18V
1
100mA
-
-
-
NJM2390
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
18V
Adjustable
TO-243AA
SOT-89-3
-
RFQ
NCP711ASN330T1G
onsemi
IC REG LINEAR 3.3V 100MA 5TSOP
In stoc117680 pcs
2.5 µA
Positive
Enable
3.3V
-
1
100mA
0.355V @ 100mA
80dB ~ 48dB (10Hz ~ 1MHz)
Over Current, Over Temperature
NCP711
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
18V
Fixed
SOT-23-5 Thin, TSOT-23-5
5-TSOP
-
RFQ
XC6504A301MR-G
Torex Semiconductor Ltd
IC REG LINEAR 3V 150MA SOT25-5
In stoc162750 pcs
1.27 µA
Positive
Enable
3V
-
1
150mA
0.67V @ 150mA
-
Over Current
XC6504
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-25-5
1.8 µA
RFQ
LD49150PT12R
STMicroelectronics
IC REG LINEAR 1.2V 1.5A PPAK
In stoc25350 pcs
4 mA
Positive
Enable
1.2V
-
1
1.5A
0.2V @ 1.5A
68dB (120Hz)
Over Current, Over Temperature
LD49150
Cut Tape (CT)
-
-25°C ~ 125°C
Surface Mount
5.5V
Fixed
TO-252-5, DPak (4 Leads + Tab), TO-252AD
PPAK
6 mA
RFQ
TPS77633D
Texas Instruments
IC REG LINEAR 3.3V 500MA 8SOIC
In stoc23360 pcs
125 µA
Positive
Enable, Power Good
3.3V
-
1
500mA
0.29V @ 500mA
60dB (100Hz)
Over Current, Over Temperature
TPS77633
Tube
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
LP3879MR-1.2
Texas Instruments
IC REG LIN 1.2V 800MA 8SO PWRPAD
In stoc11106 pcs
1.4 mA
Positive
Enable
1.2V
-
1
800mA
-
60dB (1kHz)
Over Current, Over Temperature, Short Circuit
LP3879
Tube
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
8-PowerSOIC (0.154', 3.90mm Width)
8-SO PowerPad
2.2 mA
RFQ
AP7173-FNG-7
Diodes Incorporated
IC REG LIN POS ADJ 1.5A 10DFN
In stoc55990 pcs
-
Positive
Enable, Power Good, Soft Start
0.8V
3.3V
1
1.5A
1.7V @ 1.5A
60dB ~ 30dB (1kHz ~ 300kHz)
Over Current, Over Temperature
AP7173
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Adjustable
10-UFDFN Exposed Pad
U-DFN3030-10
-
RFQ
RP103Q331B-TR-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 3.3V 150MA SC82AB
In stoc143690 pcs
50 µA
Positive
Enable
3.3V
-
1
150mA
0.27V @ 150mA
-
Over Current
RP103
Tape & Reel (TR)
RP103x
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
SC-82A, SOT-343
SC-82AB
-
RFQ
IFX25001TCV10
Infineon Technologies
IC REG LINEAR VOLTAGE REG
In stoc15300 pcs
220 µA
Positive
-
10V
-
1
400mA
0.5V @ 250mA
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
-
Bulk
-
-40°C ~ 125°C (TJ)
Surface Mount
40V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
PG-TO263-3
30 mA
RFQ
UA79M08CKTPR
Texas Instruments
IC REG LIN -8V 500MA 2POWERFLEX
In stoc7540 pcs
-
Negative
-
-8V
-
1
500mA
1.1V @ 5mA
59dB (120Hz)
Over Current, Over Temperature, Short Circuit
UA79M
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
-25V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252-3
-
RFQ
S-817B30AMC-CWTT2G
ABLIC Inc.
IC REG LINEAR 3V 50MA SOT23-5
In stoc93740 pcs
2.5 µA
Positive
-
3V
-
1
50mA
0.41V @ 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
TPS79225DBVT
Texas Instruments
IC REG LINEAR 2.5V 100MA SOT23-5
In stoc33687 pcs
250 µA
Positive
Enable
2.5V
-
1
100mA
-
70dB ~ 47dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS79225
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
ADP3338AKC-1.8-RL
Analog Devices Inc.
IC REG LDO 1A PREC 1.8V SOT-223
In stoc13498 pcs
190 µA
Positive
-
1.8V
-
1
1A
0.4V @ 1A
-
Over Current, Over Temperature
ADP3338
Bulk
anyCAP®
-40°C ~ 85°C (TA)
Surface Mount
8V
Fixed
TO-261-4, TO-261AA
SOT-223-3
30 mA
RFQ
TPS73230DCQR
Texas Instruments
IC REG LINEAR 3V 250MA SOT223-6
In stoc40770 pcs
550 µA
Positive
Enable
3V
-
1
250mA
0.15V @ 250mA
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Short Circuit, Reverse Polarity
TPS73230
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-223-6
SOT-223-6
950 µA
RFQ
TC1015-4.0VCT713
Microchip Technology
IC REG LINEAR 4V 100MA SOT23-5
In stoc93970 pcs
80 µA
Positive
Enable
4V
-
1
100mA
0.25V @ 100mA
64dB (1kHz)
Over Current, Over Temperature
TC1015
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
S-812C33BMC-C4NT2G
ABLIC Inc.
IC REG LINEAR 3.3V 50MA SOT23-5
In stoc81750 pcs
500 nA
Positive
Enable
3.3V
-
1
50mA
0.41V @ 10mA
-
Short Circuit
S-812
Tape & Reel (TR)
S-812C
-40°C ~ 85°C (TA)
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
1.8 µA
RFQ