RP109L301D-TR
Nisshinbo Micro Devices Inc.
IC REG LINEAR 3V 150MA DFN1010-4
In stock174710 pcs
70 µA
Positive
Enable
3V
-
1
150mA
0.32V @ 150mA
75dB (1kHz)
Over Current
RP109
Tape & Reel (TR)
RP109x
-40°C ~ 85°C (TA)
Surface Mount
5.25V
Fixed
4-XDFN Exposed Pad
DFN1010-4
-
RFQ
AP7363-15E-13
Diodes Incorporated
IC REG LINEAR 1.5V 1.5A SOT223
In stock240660 pcs
1.2 mA
Positive
-
1.5V
-
1
1.5A
0.24V @ 1.5A
65dB ~ 61dB (120Hz ~ 1kHz)
Over Current, Over Temperature
AP7363
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
SP6201EM5-G-3-3
MaxLinear, Inc.
IC REG LINEAR 3.3V 200MA SOT23-5
In stock5340 pcs
-
Positive
Enable
3.3V
-
1
200mA
0.5V @ 200mA
78dB ~ 40dB (100Hz ~ 400Hz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
LM317T-DG
STMicroelectronics
IC REG LIN POS ADJ 1.5A TO220-3
In stock113350 pcs
10 mA
Positive
-
1.2V
37V
1
1.5A
-
80dB ~ 65dB (120Hz)
Over Current, Over Temperature, Short Circuit
LM317
Tube
-
0°C ~ 125°C
Through Hole
40V
Adjustable
TO-220-3
TO-220
-
RFQ
LP2951CMM
Texas Instruments
IC REG LIN POS ADJ 100MA 8VSSOP
In stock40660 pcs
120 µA
Positive
Enable
1.235V (5V)
29V
1
100mA
0.6V @ 100mA
-
Over Current, Over Temperature, Short Circuit
LP2951
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
30V
Adjustable (Fixed)
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-VSSOP
14 mA
RFQ
TLV70734PDQNR
Texas Instruments
IC REG LINEAR 3.4V 200MA 4X2SON
In stock347050 pcs
50 µA
Positive
Enable
3.4V
-
1
200mA
0.25V @ 150mA
70dB ~ 50dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Short Circuit, Reverse Polarity
TLV70734
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
MIC5282-3.3YMME
Microchip Technology
IC REG LINEAR 3.3V 50MA 8MSOP
In stock26503 pcs
11 µA
Positive
-
3.3V
-
1
50mA
3V @ 50mA
90dB ~ 65dB (40kHz ~ 1kHz)
Over Current, Over Temperature
MIC5282
Tube
-
-40°C ~ 125°C
Surface Mount
120V
Fixed
8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
8-MSOP-EP
-
RFQ
LP3855ES-3.3
Texas Instruments
IC REG LINEAR 3.3V 1.5A DDPAK
In stock13240 pcs
3 mA
Positive
Enable
3.3V
-
1
1.5A
0.38V @ 1.5A
73dB ~ 57dB (120Hz)
Over Current, Over Temperature, Short Circuit
LP3855
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
S-1132B36-M5T1G
ABLIC Inc.
IC REG LINEAR 3.6V 300MA SOT23-5
In stock64950 pcs
1 µA
Positive
Enable
3.6V
-
1
300mA
0.15V @ 100mA
65dB (1kHz)
Over Current
S-1132
Tape & Reel (TR)
S-1132
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
40 µA
RFQ
IRU1206-18CD
Infineon Technologies
IC REG LINEAR 1.8V 1A DPAK
In stock10030 pcs
3 mA
Positive
-
1.8V
-
1
1A
0.65V @ 1A
-
Over Current, Over Temperature
IRU1206-18CD
Tube
-
0°C ~ 125°C
Surface Mount
12V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
D-Pak
50 mA
RFQ
UA78M05CKC
Texas Instruments
IC REG LINEAR 5V 500MA TO220-3
In stock12760 pcs
-
Positive
-
5V
-
1
500mA
2V @ 350mA
80dB (120Hz)
Over Current, Over Temperature, Short Circuit
UA78M
Tube
-
0°C ~ 125°C
Through Hole
25V
Fixed
TO-220-3
TO-220-3
-
RFQ
TPS72616KTTR
Texas Instruments
IC REG LIN 1.6V 1A DDPAK/TO263-5
In stock10030 pcs
120 µA
Positive
Enable, Reset
1.6V
-
1
1A
0.32V @ 1A
60dB (1kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS72616
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
DDPAK/TO-263-5
300 µA
RFQ
LM341T-15
Texas Instruments
IC REG LIN FIXED POS STD REG 12V
In stock65260 pcs
4 mA
Positive
-
15V
-
1
500mA
-
69dB (120Hz)
Over Current, Over Temperature, Short Circuit
LM341
Bulk
-
-40°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220-3
-
RFQ
S-L2980A30MC-TF-G
ABLIC Inc.
IC REG LINEAR 3V 150MA SOT23-5
In stock80850 pcs
1 µA
Positive
Enable
3V
-
1
150mA
0.15V @ 50mA
70dB (1kHz)
-
S-L2980
Tape & Reel (TR)
S-L2980
-40°C ~ 85°C (TA)
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
140 µA
RFQ
KA78M15TU
Fairchild Semiconductor
IC REG LINEAR 15V 500MA TO220-3
In stock245770 pcs
6 mA
Positive
-
15V
-
1
500mA
2V @ 500mA (Typ)
70dB (120Hz)
Over Temperature, Short Circuit
-
Tube
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220-3
-
RFQ
RP132S181B-E2-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 1.8V 1A 6HSOP
In stock76580 pcs
85 µA
Positive
Delay, Enable
1.8V
-
1
1A
1.05V @ 1A
70dB (1kHz)
Over Current, Over Temperature
RP132
Tape & Reel (TR)
RP132x
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
6-SOIC Variation (0.154", 3.90mm Width), 4 Leads + 2 Fins
6-HSOP-J
-
RFQ
IRU1030CDTR
Infineon Technologies
IC REG LINEAR POS ADJ 3A DPAK
In stock5740 pcs
10 mA
Positive
-
2.5V
3.3V
1
3A
1.3V @ 3A
70dB (120Hz)
Over Current, Over Temperature
IRU1030CD
Tape & Reel (TR)
-
0°C ~ 150°C
Surface Mount
7V
Adjustable
TO-252-3, DPak (2 Leads + Tab), SC-63
D-Pak
-
RFQ
TPS78633DCQ
Texas Instruments
IC REG LINEAR 3.3V 1.5A SOT223-6
In stock11851 pcs
385 µA
Positive
Enable
3.3V
-
1
1.5A
0.51V @ 1.5A
59dB ~ 32dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS78633
Tube
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-223-6
SOT-223-6
-
RFQ
LP2960AIM-5.0
Texas Instruments
IC REG LINEAR 5V 500MA 16SOIC
In stock7730 pcs
600 µA
Positive
Enable
5V
-
1
500mA
0.8V @ 500mA
-
Over Current, Over Temperature, Reverse Polarity
LP2960
Tube
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
16-SOIC (0.154", 3.90mm Width)
16-SOIC
40 mA
RFQ
TPS7A2650DRVR
Texas Instruments
IC REG LINEAR 5V 500MA 6WSON
In stock95280 pcs
4.5 µA
Positive
Enable, Power Good
5V
-
1
500mA
0.33V @ 500mA
75dB ~ 52dB (10Hz ~ 1kHz)
Over Current, Over Temperature, UVLO
TPS7A2650
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
18V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
-
RFQ
AP1117E25G-13
Diodes Incorporated
IC REG LINEAR 2.5V 1A SOT223-3
In stock16910 pcs
10 mA
Positive
-
2.5V
-
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
FAN1086D25X
Fairchild Semiconductor
IC REG LINEAR 2.5V 1.5A DPAK
In stock84090 pcs
-
Positive
-
2.5V
-
1
1.5A
1.5V @ 1.5A
72dB (120Hz)
Over Current, Over Temperature
-
Bulk
-
25°C ~ 125°C
Surface Mount
7.5V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252, (D-Pak)
-
RFQ
TPS76133DBVR
Texas Instruments
IC REG LINEAR 3.3V 100MA SOT23-5
In stock50660 pcs
115 µA
Positive
Enable
3.3V
-
1
100mA
0.28V @ 100mA
63dB (1kHz)
Over Current, Over Temperature, Reverse Polarity, Transient Voltage
TPS76133
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
4 mA
RFQ
MIC5207-4.0BM5
Micrel Inc.
IC REG LINEAR 180MA LOW NOISE
In stock261580 pcs
170 µA
Positive
Enable
4V
-
1
180mA
0.4V @ 150mA
-
Over Current, Over Temperature, Reverse Polarity
-
Bulk
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
3 µA
RFQ
TPS7A1110PDRVR
Texas Instruments
IC REG LINEAR 1V 500MA 6WSON
In stock79480 pcs
2.6 µA
Positive
Enable
1V
-
1
500mA
0.14V @ 500mA
64dB ~ 35dB (1kHz ~ 1.5MHz)
Over Current, Over Temperature, UVLO
TPS7A1110
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
3.3V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
11 µA
RFQ
ADP3339AKCZ-3.3-R7
Analog Devices Inc.
IC REG LINEAR 3.3V 1.5A SOT223-3
In stock7365 pcs
200 µA
Positive
-
3.3V
-
1
1.5A
0.48V @ 1.5A
-
Over Current, Over Temperature
ADP3339
Tape & Reel (TR)
anyCAP®
-40°C ~ 85°C (TA)
Surface Mount
6V
Fixed
TO-261-4, TO-261AA
SOT-223-3
40 mA
RFQ
BA040LBSG-TR
Rohm Semiconductor
IC REG LINEAR 4V 150MA SMP5
In stock7540 pcs
150 µA
Positive
Enable
4V
-
1
150mA
0.15V @ 50mA
66dB ~ 56dB (400Hz)
Over Current, Over Temperature
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
7V
Fixed
SC-74A, SOT-753
SMP5
-
RFQ
LT1764AEQ-1.5#TRPBF
Analog Devices Inc.
IC REG LINEAR 1.5V 3A 5DDPAK
In stock4084 pcs
1.5 mA
Positive
Enable
1.5V
-
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
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
5-DDPAK
200 mA
RFQ
NJM2872BF03-TE1
Nisshinbo Micro Devices Inc.
IC REG LINEAR 3V 150MA SOT23-5
In stock163690 pcs
180 µA
Positive
Enable
3V
-
1
150mA
0.1V @ 60mA
75dB (1kHz)
Over Current, Over Temperature, Short Circuit
NJM2872
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
14V
Fixed
SC-74A, SOT-753
SOT-23-5 (MTP5)
-
RFQ
MC7812BDTG
onsemi
IC REG LINEAR 12V 1A DPAK
In stock152850 pcs
8 mA
Positive
-
12V
-
1
1A
2V @ 1A (Typ)
60dB (1kHz)
Over Temperature, Short Circuit
MC7812
Tube
-
-40°C ~ 125°C
Surface Mount
35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
TLV70730PDQNR
Texas Instruments
IC REG LINEAR 3V 200MA 4X2SON
In stock475820 pcs
50 µA
Positive
Enable
3V
-
1
200mA
0.27V @ 150mA
70dB ~ 50dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Short Circuit, Reverse Polarity
TLV70730
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
TLV117125DCYT
Texas Instruments
IC REG LINEAR 2.5V 1A SOT223-4
In stock60200 pcs
100 µA
Positive
-
2.5V
-
1
1A
0.8V @ 1A
65dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TLV117125
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
TO-261-4, TO-261AA
SOT-223-4
-
RFQ
TPS7B4254QDDARQ1
Texas Instruments
IC REG LIN POS ADJ 8SO POWERPAD
In stock43177 pcs
100 µA
Positive
-
2V
40V
1
150mA
0.26V @ 100mA
70dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
TPS7B4254
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C
Surface Mount
40V
Adjustable
8-PowerSOIC (0.154', 3.90mm Width)
8-SO PowerPad
260 µA
RFQ
TA48015BF(T6L1,NQ)
Toshiba Semiconductor and Storage
IC REG LINEAR 1.5V 1A PW-MOLD
In stock8250 pcs
1.7 mA
Positive
-
1.5V
-
1
1A
1.9V @ 1A (Typ)
65dB (120Hz)
Over Current, Over Temperature
TA48015
Tape & Reel (TR)
-
-40°C ~ 150°C
Surface Mount
16V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
PW-MOLD
20 mA
RFQ
LF25ABDT-TR
STMicroelectronics
IC REG LINEAR 2.5V 500MA DPAK
In stock35490 pcs
1 mA
Positive
-
2.5V
-
1
500mA
0.7V @ 500mA
82dB ~ 65dB (120Hz ~ 10kHz)
Over Current, Over Temperature
LF25
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
12 mA
RFQ
LT3045EMSE#PBF
Analog Devices Inc.
IC REG LIN POS PROG 500MA 12MSOP
In stock8636 pcs
20 µA
Positive
Enable, Power Good, Soft Start
0V
15V
1
500mA
0.45V @ 500mA
117dB ~ 53dB (120Hz ~ 10MHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
LT3045
Tube
-
-40°C ~ 125°C (TJ)
Surface Mount
20V
Adjustable
12-TSSOP (0.118', 3.00mm Width) Exposed Pad
12-MSOP-EP
25 mA
RFQ
MIC5255-2.9BM5TR
Microchip Technology
IC REG LINEAR MICROCAP CMOS LDO
In stock286520 pcs
150 µA
Positive
Enable
2.9V
-
1
150mA
0.25V @ 150mA
60dB ~ 50dB (10Hz ~ 10kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
-
Bulk
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TPS71825-12DRVR
Texas Instruments
IC REG LIN 2.5V/1.2V 200MA 6WSON
In stock30750 pcs
160 µA
Positive
Enable
2.5V, 1.2V
-
2
200mA
-
63dB ~ 44dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS71825
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
250 µA
RFQ
RT9065GE
Richtek USA Inc.
IC LDO 0.2A LOW DROPOUT SOT-23-6
In stock230840 pcs
120 µA
Positive
Current Limit, Enable
0.8V
5V
1
500mA
0.5V @ 500mA
70dB ~ 50dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
-
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Adjustable
SOT-23-6
SOT-23-6
-
RFQ
AZ1117S-3.3E1
Diodes Incorporated
IC REG LINEAR 3.3V 1.25A TO263
In stock8590 pcs
10 mA
Positive
-
3.3V
-
1
1.25A
1.25V @ 1A
75dB (120Hz)
Over Current, Over Temperature
AZ1117
Tape & Reel (TR)
AZ1117
-40°C ~ 125°C
Surface Mount
15V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
TO-263
-
RFQ
MAX8891EXK18+T
Analog Devices Inc./Maxim Integrated
IC REG LINEAR 1.8V 150MA SC70-5
In stock44920 pcs
40 µA
Positive
Enable
1.8V
-
1
150mA
-
65dB (10kHz)
Over Current, Over Temperature
MAX8891
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
6V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
-
RFQ
AP7365-39YG-13
Diodes Incorporated
IC REG LINEAR 3.9V 600MA SOT89-3
In stock361920 pcs
80 µA
Positive
-
3.9V
-
1
600mA
0.4V @ 600mA
65dB (1kHz)
Over Current, Over Temperature
AP7365
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
TO-243AA
SOT-89-3
-
RFQ
LM317LIPW
Texas Instruments
IC REG LIN POS ADJ 100MA 8TSSOP
In stock107150 pcs
2.5 mA
Positive
-
1.2V
32V
1
100mA
-
80dB ~ 65dB (120Hz)
Over Current, Over Temperature, Short Circuit
LM317
Tube
-
-40°C ~ 125°C
Surface Mount
38V
Adjustable
8-TSSOP (0.173', 4.40mm Width)
8-TSSOP
-
RFQ
RP112K281D-TR
Nisshinbo Micro Devices Inc.
IC REG LIN 2.8V 150MA DFN1010-4
In stock81080 pcs
100 µA
Positive
Enable
2.8V
-
1
150mA
0.28V @ 150mA
80dB ~ 65dB (1kHz ~ 100kHz)
Over Current
RP112
Tape & Reel (TR)
RP112x
-40°C ~ 85°C (TA)
Surface Mount
5.25V
Fixed
4-UDFN Exposed Pad
DFN(PL)1010-4
-
RFQ
BA90DD0WHFP-TR
Rohm Semiconductor
IC REG LINEAR 9V 2A HRP-5
In stock19109 pcs
120 µA
Positive
Enable
9V
-
1
2A
0.7V @ 2A
55dB (120Hz)
Over Current, Over Temperature, Over Voltage
BA90DD0
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
25V
Fixed
HRP-5 (5 Leads + Tab)
HRP-5
-
RFQ
NJM2870F33-TE1
Nisshinbo Micro Devices Inc.
IC REG LINEAR 3.3V 150MA SOT23-5
In stock129520 pcs
300 µA
Positive
Enable
3.3V
-
1
150mA
0.2V @ 60mA
60dB (1kHz)
Over Temperature, Short Circuit
NJM2870
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
14V
Fixed
SC-74A, SOT-753
SOT-23-5 (MTP5)
-
RFQ
LTC3026EDD#PBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 1.5A 10DFN
In stock6979 pcs
-
Positive
Enable, Power Good
0.4V
2.6V
1
1.5A
0.25V @ 1.5A
-
Over Current, Over Temperature, Reverse Polarity, Short Circuit
LTC3026
Tube
-
-40°C ~ 125°C
Surface Mount
3.5V, 5.5V
Adjustable
10-WFDFN Exposed Pad
10-DFN (3x3)
-
RFQ
REG104FA-5/500
Texas Instruments
IC REG LIN 5V 1A DDPAK/TO263-5
In stock7474 pcs
0.7 mA
Positive
Enable
5V
-
1
1A
0.58V @ 1A
65dB (120Hz)
Over Current, Over Temperature
REG104
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
15V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
DDPAK/TO-263-5
1.8 mA
RFQ
LT1763CDE
Analog Devices Inc.
IC REG LIN POS ADJ 500MA 12DFN
In stock9990 pcs
75 µA
Positive
Enable
1.22V
20V
1
500mA
0.45V @ 500mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
-
Tube
-
-40°C ~ 125°C
Surface Mount
20V
Adjustable
12-WFDFN Exposed Pad
12-DFN (4x3)
16 mA
RFQ
KA278R05CYDTU
onsemi
IC REG LINEAR 5V 2A TO220F-4L
In stock16370 pcs
10 mA
Positive
-
5V
-
1
2A
0.5V @ 2A
-
Over Current, Over Temperature, Over Voltage, Short Circuit
KA278
Tube
-
-20°C ~ 80°C
Through Hole
35V
Fixed
TO-220-4 Full Pack, Formed Leads
TO-220F-4L (Forming)
-
RFQ