LDK120M30R
STMicroelectronics
IC REG LINEAR 3V 200MA SOT23-5
Op voorraad79010 pcs
60 µA
Positive
Enable
3V
-
1
200mA
0.3V @ 200mA
55dB (120Hz ~ 10kHz)
Over Current, Over Temperature
LDK120
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
100 µA
RFQ
L6935TR
STMicroelectronics
IC REG LIN POS ADJ 3A 20VFQFPN
Op voorraad23619 pcs
3 mA
Positive
Enable, Power Good, Soft Start
0.5V
3V
1
3A
-
45dB (100Hz ~ 120Hz)
Over Current, Over Temperature, Short Circuit
L6935
Tape & Reel (TR)
Automotive, AEC-Q100
-25°C ~ 150°C
Surface Mount
5V
Adjustable
20-VQFN Exposed Pad
20-VFQFPN (4x4)
-
RFQ
LT3011IMSE#PBF
Analog Devices Inc.
IC REG LIN POS ADJ 50MA 12MSOP
Op voorraad11560 pcs
-
Positive
Power Good
1.24V
60V
1
50mA
0.55V @ 50mA
85dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3011
Tube
-
-40°C ~ 125°C
Surface Mount
80V
Adjustable
12-TSSOP (0.118", 3.00mm Width) Exposed Pad
12-MSOP-EP
-
RFQ
MC79M12CDTG
onsemi
IC REG LINEAR -12V 500MA DPAK
Op voorraad12120 pcs
-
Negative
-
-12V
-
1
500mA
1.1V @ 500mA (Typ)
60dB (120Hz)
Over Current, Over Temperature
MC79M12
Tube
-
0°C ~ 125°C
Surface Mount
-35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
NCV59302DSADJR4G
onsemi
IC REG LINEAR POS ADJ 3A D2PAK-5
Op voorraad11590 pcs
-
Positive
Enable
1.24V
13V
1
3A
0.5V @ 3A
-
Over Current, Over Temperature, Reverse Polarity
NCV59302
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
13.5V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
D2PAK-5
-
RFQ
TPS7A0333DQNR
Texas Instruments
IC REG LINEAR 3.3V 200MA 4X2SON
Op voorraad80840 pcs
300 nA
Positive
Enable
3.3V
-
1
200mA
0.31V @ 200mA
55dB (1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS7A0333
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
6V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
MIC29150-12WU
Microchip Technology
IC REG LINEAR 12V 1.5A TO263-3
Op voorraad7597 pcs
-
Positive
-
12V
-
1
1.5A
0.6V @ 1.5A
-
Over Current, Over Temperature, Reverse Polarity, Transient Voltage
MIC29150
Tube
-
-40°C ~ 125°C
Surface Mount
26V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
TO-263-3
-
RFQ
MCP1804T-5002I/DB
Microchip Technology
IC REG LINEAR 5V 150MA SOT223-3
Op voorraad44540 pcs
105 µA
Positive
-
5V
-
1
150mA
1.3V @ 100mA
50dB (1kHz)
Over Current, Over Temperature
MCP1804
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
28V
Fixed
TO-261-4, TO-261AA
SOT-223-3
125 µA
RFQ
PQ070VK01FZH
Sharp Microelectronics
IC REG LINEAR POS ADJ 1A TO220-5
Op voorraad95900 pcs
-
-
-
-
-
-
-
-
-
-
-
Tube
*
-
-
-
-
-
-
-
RFQ
REG102NA-A/3K
Texas Instruments
IC REG LIN POS ADJ 250MA SOT23-5
Op voorraad23408 pcs
500 µA
Positive
Enable
2.5V
5.5V
1
250mA
0.27V @ 250mA
65dB (120Hz)
Over Current, Over Temperature
REG102
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
10V
Adjustable
SC-74A, SOT-753
SOT-23-5
800 µA
RFQ
AP2128K-3.3TRG1
Diodes Incorporated
IC REG LINEAR 3.3V 300MA SOT23-5
Op voorraad408850 pcs
90 µA
Positive
Enable
3.3V
-
1
300mA
0.3V @ 300mA
68dB ~ 54dB (100Hz ~ 10kHz)
Over Current, Over Temperature
AP2128
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TPS73401DDCT
Texas Instruments
IC REG LIN POS ADJ 250MA SOT23-5
Op voorraad36300 pcs
65 µA
Positive
Enable
1.25V
6.2V
1
250mA
0.22V @ 250mA
60dB ~ 28dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS73401
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Adjustable
SOT-23-5 Thin, TSOT-23-5
SOT-23-THIN
-
RFQ
TLV1117-33IDRJR
Texas Instruments
IC REG LINEAR 3.3V 800MA 8SON
Op voorraad109390 pcs
-
Positive
-
3.3V
-
1
800mA
1.3V @ 800mA
75dB (120Hz)
Over Current, Over Temperature
TLV1117
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
15V
Fixed
8-WDFN Exposed Pad
8-SON (4x4)
-
RFQ
TPS73601MDCQREP
Texas Instruments
IC REG LIN POS ADJ 400MA SOT223
Op voorraad11046 pcs
550 µA
Positive
Enable
1.2V
5.5V
1
400mA
0.2V @ 400mA
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Reverse Polarity
TPS73601
Tape & Reel (TR)
-
-55°C ~ 125°C
Surface Mount
5.5V
Adjustable
SOT-223-6
SOT-223-6
1 mA
RFQ
S-1112B15MC-L6ATFG
ABLIC Inc.
IC REG LINEAR 1.5V 150MA SOT23-5
Op voorraad77610 pcs
1 µA
Positive
Enable
1.5V
-
1
150mA
0.55V @ 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
LP2951-50DRGR
Texas Instruments
IC REG LIN POS ADJ 100MA 8SON
Op voorraad132090 pcs
120 µA
Positive
Enable
1.235V (5V)
30V
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-WFDFN Exposed Pad
8-SON (3x3)
14 mA
RFQ
MIC39300-2.5BT
Microchip Technology
IC REG LINEAR 2.5V 3A TO220-3
Op voorraad16240 pcs
-
Positive
-
2.5V
-
1
3A
0.55V @ 3A
-
Over Current, Over Temperature, Reverse Polarity
MIC39300-2.5
Bulk
-
-40°C ~ 125°C
Through Hole
16V
Fixed
TO-220-3
TO-220-3
-
RFQ
LT3013BEDE
Analog Devices Inc.
IC REG LIN POS ADJ 250MA 12DFN
Op voorraad13910 pcs
120 µA
Positive
Power Good
1.24V
60V
1
250mA
0.62V @ 250mA
75dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
-
Tube
-
-40°C ~ 125°C
Surface Mount
80V
Adjustable
12-WFDFN Exposed Pad
12-DFN (4x3)
18 mA
RFQ
LP3961ES-2.5
Texas Instruments
IC REG LINEAR 2.5V 800MA DDPAK
Op voorraad11867 pcs
9 mA
Positive
Enable
2.5V
-
1
800mA
0.35V @ 800mA
-
Over Current, Over Temperature, Short Circuit
LP3961
Tube
-
-40°C ~ 125°C
Surface Mount
7V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
DDPAK/TO-263-5
15 mA
RFQ
RT9080-28GJ5
Richtek USA Inc.
IC REG LDO 0.6A LOW IQ TSOT23-5
Op voorraad274780 pcs
4 µA
Positive
Enable
2.8V
-
1
600mA
0.63V @ 600mA
-
Over Current, Over Temperature, Short Circuit
-
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
R1173S121B-E2-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 1.2V 1A 6HSOP
Op voorraad65590 pcs
100 µA
Positive
Enable
1.2V
-
1
1A
0.56V @ 1A
70dB (1kHz)
Over Current, Over Temperature
R1173
Tape & Reel (TR)
R1173x
-40°C ~ 85°C
Surface Mount
6V
Fixed
6-SOIC Variation (0.154", 3.90mm Width), 4 Leads + 2 Fins
6-HSOP-J
-
RFQ
MAX603CSA+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 500MA 8SOIC
Op voorraad9281 pcs
35 µA
Positive
Enable
1.25V (5V)
11V
1
500mA
0.55V @ 500mA
-
Over Current, Over Temperature, Reverse Polarity
MAX603
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
11.5V
Adjustable (Fixed)
8-SOIC (0.154", 3.90mm Width)
8-SOIC
-
RFQ
LM1117T-2.85
Texas Instruments
IC REG LINEAR FIXED LDO REG
Op voorraad132000 pcs
5 mA
Positive
-
2.85V
-
1
800mA
1.2V @ 800mA
75dB (120Hz)
Over Current, Over Temperature
-
Bulk
-
0°C ~ 125°C
Through Hole
15V
Fixed
TO-220-3
TO-220-3
10 mA
RFQ
BD33KA5FP-E2
Rohm Semiconductor
IC REG LINEAR 3.3V 500MA TO252-3
Op voorraad57060 pcs
550 µA
Positive
-
3.3V
-
1
500mA
0.2V @ 200mA
50dB (120Hz)
Over Current, Over Temperature
BD33KA5
Tape & Reel (TR)
-
-40°C ~ 105°C
Surface Mount
5.5V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252
550 µA
RFQ
NCP160AFCS514T2G
onsemi
IC REG LINEAR 5.14V 250MA 4WLCSP
Op voorraad413830 pcs
23 µA
Positive
Enable
5.14V
-
1
250mA
0.105V @ 250mA
91dB ~ 48dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Soft Start
NCP160
Tape & Reel (TR)
-
-40°C ~ 125°C (TA)
Surface Mount
5.5V
Fixed
4-XFBGA, WLCSP
4-WLCSP (0.64x0.64)
-
RFQ
TPS75925KTTRG3
Texas Instruments
IC REG LINEAR 2.5V 7.5A DDPAK
Op voorraad14230 pcs
200 µA
Positive
Enable, Power Good
2.5V
-
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
LT1764AET#PBF
Analog Devices Inc.
IC REG LINEAR 1.21V 3A TO220-5
Op voorraad6065 pcs
1.5 mA
Positive
Enable
1.21V
20V
1
3A
0.66V @ 3A
63dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1764
Tube
-
-40°C ~ 125°C (TJ)
Through Hole
20V
Fixed
TO-220-5
TO-220-5
200 mA
RFQ
MIC5247-2.4BM5TR
Microchip Technology
IC REG LINEAR LO NOISE MICROCAP
Op voorraad220470 pcs
150 µA
Positive
Enable
2.4V
-
1
150mA
0.15V @ 150mA
50dB (1kHz)
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
NCP580SQ15T1G
onsemi
IC REG LINEAR 1.5V 120MA SC82AB
Op voorraad14560 pcs
160 µA
Positive
Enable
1.5V
-
1
120mA
0.7V @ 120mA
75dB (1kHz)
Over Current
NCP580
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-82A, SOT-343
SC-82AB
-
RFQ
NCV8665DS50R4G
onsemi
IC REG LINEAR 5V 150MA D2PAK-5
Op voorraad8600 pcs
34 µA
Positive
Reset
5V
-
1
150mA
0.6V @ 150mA
69dB (100Hz)
Over Temperature, Reverse Polarity, Short Circuit
NCV8665
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C
Surface Mount
45V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
D2PAK-5
40 µA
RFQ
CS5257A-1GDP5
onsemi
IC REG LINEAR POS ADJ 7A D2PAK-5
Op voorraad11950 pcs
10 mA
Positive
-
1.25V
5V
1
7A
1.25V @ 7A
80dB (120Hz)
Over Current, Over Temperature, Short Circuit
CS5257
Tube
-
0°C ~ 70°C
Surface Mount
13V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
D2PAK-5
-
RFQ
TC2185-2.5VCTTR
Microchip Technology
IC REG LINEAR 2.5V 150MA SOT23-5
Op voorraad73020 pcs
80 µA
Positive
Enable
2.5V
-
1
150mA
0.21V @ 150mA
55dB (1kHz)
Over Current, Over Temperature
TC2185
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TPS7B8150QDRVRQ1
Texas Instruments
IC REG LIN 5V 150MA 6WSON
Op voorraad74290 pcs
3.5 µA
Positive
Enable
5V
-
1
150mA
0.585V @ 150mA
60dB (100Hz)
Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
TPS7B8150
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
40V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
4.5 µA
RFQ
RN5RZ50BA-TR-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 5V 100MA SOT23-5
Op voorraad60740 pcs
40 µA
Positive
Enable
5V
-
1
100mA
0.3V @ 60mA
55dB (1kHz)
Over Current
RN5RZ50
Tape & Reel (TR)
Rx5RZ
-40°C ~ 85°C
Surface Mount
8V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
UCC283T-5
Texas Instruments
IC REG LINEAR 5V 3A TO220-3
Op voorraad17270 pcs
650 µA
Positive
-
5V
-
1
3A
0.6V @ 3A
-
Over Current, Over Temperature, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO)
UCC283
Tube
-
-40°C ~ 85°C
Through Hole
9V
Fixed
TO-220-3
TO-220-3
-
RFQ
TPS7A0228PDQNR
Texas Instruments
IC REG LINEAR 2.8V 200MA 4X2SON
Op voorraad70520 pcs
60 nA
Positive
Enable
2.8V
-
1
200mA
0.36V @ 200mA
55dB (1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS7A0228
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
6V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
ADM7155ARDZ-02-R7
Analog Devices Inc.
IC REG LIN POS ADJ 600MA 8SOIC
Op voorraad9370 pcs
7 mA
Positive
Enable
1.2V
2.4V
1
600mA
0.21V @ 600mA
94dB ~ 61dB (1kHz ~ 1MHz)
Over Current, Over Temperature
ADM7155
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
8-SOIC (0.154", 3.90mm Width) Exposed Pad
8-SOIC-EP
10 mA
RFQ
TLV75530PDQNT
Texas Instruments
IC REG LINEAR 3V 500MA 4X2SON
Op voorraad50410 pcs
31 µA
Positive
Enable
3V
-
1
500mA
0.325V @ 500mA
52dB (1kHz ~ 1MHz)
Over Current, Over Temperature
TLV75530
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
ILC7082AIM525X
Fairchild Semiconductor
IC REG LINEAR FIXED LDO REG
Op voorraad150320 pcs
220 µA
Positive
Enable
2.5V
-
1
150mA
0.3V @ 150mA
85dB ~ 60dB (1kHz ~ 1MHz)
Over Current, Over Temperature, Short Circuit
-
Bulk
-
-40°C ~ 85°C (TA)
Surface Mount
13V
Fixed
SC-74A, SOT-753
SOT-23-5
280 µA
RFQ
REG103UA-A/2K5G4
Texas Instruments
IC REG LIN POS ADJ 500MA 8SOIC
Op voorraad8690 pcs
0.7 mA
Positive
Enable
1.295V
5.5V
1
500mA
0.28V @ 500mA
65dB (120Hz)
Over Current, Over Temperature
REG103
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
15V
Adjustable
8-SOIC (0.154", 3.90mm Width)
8-SOIC
1.3 mA
RFQ
LT1963AEQ-2.5#PBF
Analog Devices Inc.
IC REG LINEAR 2.5V 1.5A 5DDPAK
Op voorraad9565 pcs
1.5 mA
Positive
Enable
2.5V
-
1
1.5A
0.55V @ 1.5A
63dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1963
Tube
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
5-DDPAK
120 mA
RFQ
LP3965ET-ADJ
Texas Instruments
IC REG LIN POS ADJ 1.5A TO220-5
Op voorraad11765 pcs
9 mA
Positive
Enable
1.216V
5.1V
1
1.5A
0.55V @ 1.5A
60dB ~ 40dB (120Hz)
Over Current, Over Temperature, Short Circuit
LP3965
Tube
-
-40°C ~ 125°C
Through Hole
7V
Adjustable
TO-220-5 Formed Leads
TO-220-5
15 mA
RFQ
NCP700MN300R2G
onsemi
IC REG LINEAR 3V 200MA 6DFN
Op voorraad7390 pcs
90 µA
Positive
Enable
3V
-
1
200mA
0.2V @ 200mA
80dB ~ 65dB (120Hz ~ 10kHz)
Over Current, Over Temperature
NCP700
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
6-VDFN Exposed Pad
6-DFN (2x2.2)
220 µA
RFQ
XC6221A252MR-G
Torex Semiconductor Ltd
IC REG LINEAR 2.5V 200MA SOT25
Op voorraad180260 pcs
50 µA
Positive
Enable
2.5V
-
1
200mA
0.17V @ 100mA
70dB (1kHz)
Over Current, Short Circuit
XC6221
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-25-5
-
RFQ
LD1085D2T15R
STMicroelectronics
IC REG LINEAR 1.5V 3A D2PAK
Op voorraad6860 pcs
10 mA
Positive
-
1.5V
-
1
3A
1.5V @ 3A
72dB (120Hz)
Over Current, Over Temperature
LD1085
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
D2PAK
-
RFQ
SPX3819R2-L/TR
MaxLinear, Inc.
IC REG LINEAR POS ADJ 500MA 8DFN
Op voorraad122550 pcs
8 µA
Positive
Enable
1.235V
15.3V
1
500mA
0.7V @ 500mA
-
Over Current, Over Temperature, Reverse Polarity
SPX3819
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Adjustable
8-VFDFN Exposed Pad
8-DFN (2x3)
30 mA
RFQ
LP3855EMP-ADJ
Texas Instruments
IC REG LIN POS ADJ 1.5A SOT223-5
Op voorraad8060 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
L78M09CP
STMicroelectronics
IC REG LINEAR 9V 500MA TO220FP
Op voorraad10940 pcs
6 mA
Positive
-
9V
-
1
500mA
-
56dB (120Hz)
Over Current, Over Temperature, Short Circuit
L78M09
Tube
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3 Full Pack
TO-220FP
-
RFQ
AP2202K-2.6TRE1
Diodes Incorporated
IC REG LINEAR 2.6V 150MA SOT23-5
Op voorraad665250 pcs
150 µA
Positive
Enable
2.6V
-
1
150mA
0.35V @ 150mA
75dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
AP2202
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
13.2V
Fixed
SC-74A, SOT-753
SOT-23-5
2.5 mA
RFQ
TPS79333DBVRG4
Texas Instruments
IC REG LINEAR 3.3V 200MA SOT23-5
Op voorraad12380 pcs
220 µA
Positive
Enable
3.3V
-
1
200mA
0.18V @ 200mA
70dB ~ 43dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS79333
Tape & Reel (TR)
-
-40°C ~ 150°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ