TLV73312PQDBVRQ1
Texas Instruments
IC REG LINEAR 1.2V 300MA SOT23-5
Na zalogi187110 pcs
78 µA
Positive
Enable
1.2V
-
1
300mA
0.45V @ 300mA
-
Over Current, Over Temperature, UVLO
TLV733
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
ZSR500GTA
Diodes Incorporated
IC REG LINEAR 5V 200MA SOT223
Na zalogi53790 pcs
600 µA
Positive
-
5V
-
1
200mA
-
62dB (120Hz)
Over Temperature, Short Circuit
ZSR500
Tape & Reel (TR)
-
-55°C ~ 125°C
Surface Mount
20V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
LP2985AIM5-1.5
Texas Instruments
IC REG LINEAR 1.5V 150MA SOT23-5
Na zalogi5060 pcs
95 µA
Positive
Enable
1.5V
-
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
NCP717AMX280TCG
onsemi
IC REG LINEAR 2.8V 300MA 4XDFN
Na zalogi3630 pcs
35 µA
Positive
Enable
2.8V
-
1
300mA
0.28V @ 300mA
-
Over Current, Over Temperature
NCP717
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-XDFN (1x1)
-
RFQ
NJM2877F3-25-TE1
Nisshinbo Micro Devices Inc.
IC REG LINEAR 2.5V 150MA SC88A
Na zalogi169350 pcs
180 µA
Positive
Enable
2.5V
-
1
150mA
0.1V @ 60mA
75dB (1kHz)
Over Current
NJM2877
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
9V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-88A
-
RFQ
TPS77601QPWPRQ1
Texas Instruments
IC REG LIN POS ADJ 20HTSSOP
Na zalogi28020 pcs
125 µA
Positive
Enable, Power Good
1.2V
5.5V
1
500mA
-
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
TPS77601
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
10V
Adjustable
20-PowerTSSOP (0.173', 4.40mm Width)
20-HTSSOP
-
RFQ
TPS72728YFFR
Texas Instruments
IC REG LINEAR 2.8V 250MA 4DSBGA
Na zalogi57650 pcs
110 µA
Positive
Enable
2.8V
-
1
250mA
0.2V @ 200mA
85dB ~ 45dB (10Hz ~ 1MHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS72728
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
4-UFBGA, DSBGA
4-DSBGA (1x1)
130 µA
RFQ
LD29150DT80R
STMicroelectronics
IC REG LINEAR 8V 1.5A DPAK
Na zalogi6510 pcs
180 µA
Positive
-
8V
-
1
1.5A
-
-
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
MCP1824T-3002E/DC
Microchip Technology
IC REG LINEAR 3V 300MA SOT223-5
Na zalogi55970 pcs
220 µA
Positive
Enable, Power Good
3V
-
1
300mA
0.32V @ 300mA
55dB (100Hz)
Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
MCP1824
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SOT-223-6
SOT-223-5
-
RFQ
TPS78825DBVR
Texas Instruments
IC REG LINEAR 2.5V 150MA SOT23-5
Na zalogi53960 pcs
385 µA
Positive
Enable
2.5V
-
1
150mA
0.3V @ 150mA
70dB (1kHz)
Over Current, Over Temperature, Reverse Polarity
TPS78825
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
LTC1844ES5-1.5#TRMPBF
Analog Devices Inc.
IC REG LIN 1.5V 150MA TSOT23-5
Na zalogi16599 pcs
80 µA
Positive
Enable
1.5V
-
1
150mA
0.45V @ 150mA
50dB (120Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
LTC1844
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
AP130-20SAG-7
Diodes Incorporated
IC REG LINEAR 2V 300MA SOT23-3
Na zalogi155930 pcs
100 µA
Positive
-
2V
-
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-236-3, SC-59, SOT-23-3
SOT-23-3
-
RFQ
RC1117M25
Fairchild Semiconductor
IC REG LINEAR FIXED LDO REG
Na zalogi131130 pcs
13 mA
Positive
-
2.5V
-
1
1A
1.2V @ 1A
72dB (120Hz)
Over Current, Over Temperature, Short Circuit
-
Bulk
-
0°C ~ 125°C (TJ)
Surface Mount
7.5V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
D2PAK (TO-263)
-
RFQ
XC6206P282MR
UMW
40DB@(1KHZ) 100MA 240MV@(50MA) F
Na zalogi493300 pcs
-
Positive
Current Limit
2.8V
-
1
100mA
0.24V @ 50mA
40dB (1kHz)
Over Current, Short Circuit
-
Tape & Reel (TR)
XC6206
-25°C ~ 80°C
Surface Mount
8V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23
-
RFQ
CAT6218-330TDGT3
onsemi
IC REG LIN 3.3V 300MA TSOT23-5
Na zalogi7730 pcs
75 µA
Positive
Enable
3.3V
-
1
300mA
0.3V @ 300mA
64dB ~ 54dB (1kHz ~ 20kHz)
Over Temperature
CAT6218
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
90 µA
RFQ
TLV71133285DDSER
Texas Instruments
IC REG LINEAR 3.3V/2.85V 6WSON
Na zalogi68800 pcs
110 µA
Positive
Enable
3.3V, 2.85V
-
2
200mA
0.2V @ 200mA, 0.215V @ 200mA
80dB ~ 50dB (10Hz ~ 100kHz)
Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
TLV71133285
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
6-WFDFN
6-WSON (1.5x1.5)
-
RFQ
MIC37150-1.8WR
Microchip Technology
IC REG LINEAR 1.8V 1.5A SPAK-3
Na zalogi17273 pcs
-
Positive
-
1.8V
-
1
1.5A
0.5V @ 1.5A
-
Over Current, Over Temperature, Reverse Polarity
MIC37150
Tube
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
Spak-3 (3 Leads + Tab)
S-PAK-3
-
RFQ
AS78L05MTR-G1
Diodes Incorporated
IC REG LINEAR 5V 100MA 8SOIC
Na zalogi398320 pcs
5.5 mA
Positive
-
5V
-
1
100mA
1.8V @ 100mA (Typ)
62dB (120Hz)
Over Temperature, Short Circuit
AS78L05
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
8-SOIC (0.154", 3.90mm Width)
8-SOIC
-
RFQ
TPS7B8833QKVURQ1
Texas Instruments
AUTOMOTIVE 500-MA, 40-V, LOW-DRO
Na zalogi21712 pcs
26 µA
Positive
Enable
3.3V
-
1
500mA
0.575V @ 500mA
70dB (1kHz)
Over Current, Over Temperature, UVLO
-
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
40V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252-3
-
RFQ
MC78M05CDTX
onsemi
IC REG LINEAR 5V 500MA DPAK
Na zalogi11760 pcs
6 mA
Positive
-
5V
-
1
500mA
2V @ 500mA (Typ)
80dB (120Hz)
Over Temperature, Short Circuit
MC78M05
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
D-Pak
-
RFQ
S-1172B13-E6T1G
ABLIC Inc.
IC REG LINEAR 1.3V 1A 6HSOP
Na zalogi53360 pcs
1 µA
Positive
Enable
1.3V
-
1
1A
0.28V @ 300mA
65dB (1kHz)
Over Current, Thermal Shutdown
S-1172
Tape & Reel (TR)
S-1172
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
6-SOIC Variation (0.154', 3.90mm Width), 4 Leads + 2 Fins
6-HSOP
110 µA
RFQ
TPS799285DDCT
Texas Instruments
IC REG LIN 2.85V 200MA SOT23-5
Na zalogi64560 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
SOT-23-5 Thin, TSOT-23-5
SOT-23-THIN
-
RFQ
L78S15CV
STMicroelectronics
IC REG LINEAR 15V 2A TO220AB
Na zalogi72640 pcs
8 mA
Positive
-
15V
-
1
2A
-
46dB (120Hz)
Over Current, Over Temperature, Short Circuit
L78S15
Tube
-
0°C ~ 150°C
Through Hole
35V
Fixed
TO-220-3
TO-220
-
RFQ
MC7805ACD2TR4
onsemi
IC REG LINEAR 5V 1A D2PAK
Na zalogi15720 pcs
6 mA
Positive
-
5V
-
1
1A
2V @ 1A (Typ)
83dB (120Hz)
Over Temperature, Short Circuit
MC7805
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
35V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
D2PAK-3
-
RFQ
MIC49150-1.2WR
Microchip Technology
IC REG LINEAR 1.2V 1.5A SPAK-5
Na zalogi8892 pcs
-
Positive
Enable
1.2V
-
1
1.5A
0.5V @ 1.5A
-
Over Current, Over Temperature
MIC49150
Tube
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SPak-5 (5 leads + Tab)
S-PAK-5
-
RFQ
BA07CC0WFP-E2
Rohm Semiconductor
IC REG LINEAR 7V 1A TO252-5
Na zalogi40310 pcs
2.5 mA
Positive
Enable
7V
-
1
1A
-
55dB (120Hz)
Over Current, Over Temperature, Over Voltage
BA07CC0
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
TPS73028YZQR
Texas Instruments
IC REG LINEAR 2.8V 200MA 5DSBGA
Na zalogi117440 pcs
250 µA
Positive
Enable
2.8V
-
1
200mA
0.21V @ 200mA
68dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS73028
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
5-UFBGA, DSBGA
5-DSBGA
-
RFQ
ICL7663SACPA
Intersil
IC REG LIN POS ADJ 40/40MA 8DIP
Na zalogi10646 pcs
12 µA
Positive
Enable
1.3V
16V
2
40mA, 40mA
-
-
Over Current
-
Tube
-
0°C ~ 70°C
Through Hole
16V
Adjustable
8-DIP (0.300", 7.62mm)
8-PDIP
-
RFQ
LT3029HDE#TRPBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 16DFN
Na zalogi5137 pcs
-
Positive
Enable
1.215V
19.5V
2
500mA, 500mA
0.46V @ 500mA, 0.46V @ 500mA
67dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3029
Tape & Reel (TR)
-
-40°C ~ 150°C
Surface Mount
20V
Adjustable
16-WFDFN Exposed Pad
16-DFN (4x3)
-
RFQ
IFX27001TFV33ATMA1
Infineon Technologies
IC REG LINEAR 3.3V 1A TO252-3
Na zalogi10840 pcs
1.6 mA
Positive
-
3.3V
-
1
1A
1.4V @ 1A
65dB (120Hz)
Over Current, Over Temperature, Short Circuit
IFX27001
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
40V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
PG-TO252-3
-
RFQ
NCV8502PDW50
onsemi
IC REG LINEAR 5V 150MA 16SOIC
Na zalogi17730 pcs
125 µA
Positive
Enable, Reset
5V
-
1
150mA
0.6V @ 150mA
-
Over Temperature, Reverse Polarity, Short Circuit
NCV8502
Tube
Automotive, AEC-Q100
-40°C ~ 150°C
Surface Mount
45V
Fixed
16-SOIC (0.295', 7.50mm Width) Exposed Pad
16-SOIC
19 mA
RFQ
LT3072EUFF#TRPBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 2.5A 36QFN
Na zalogi4518 pcs
-
Positive
Enable, Power Good
-
3.3V
1
2.5A
-
-
Over Current, Over Temperature, Reverse Polarity
LT3072
Tape & Reel (TR)
-
-
Surface Mount
4V
Adjustable
36-WFQFN Exposed Pad
36-QFN (4x7)
-
RFQ
TC1017-3.3VCTTR
Microchip Technology
IC REG LINEAR 3.3V 150MA SOT23-5
Na zalogi99070 pcs
90 µA
Positive
Enable
3.3V
-
1
150mA
0.5V @ 150mA
58dB (1kHz)
Over Current, Over Temperature
TC1017
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
S-817A43ANB-CVGT2G
ABLIC Inc.
IC REG LINEAR 4.3V 65MA SC82AB
Na zalogi66440 pcs
2.5 µA
Positive
-
4.3V
-
1
65mA
0.3V @ 10mA
-
Short Circuit
S-817
Tape & Reel (TR)
S-817
-40°C ~ 85°C (TA)
Surface Mount
10V
Fixed
SC-82A, SOT-343
SC-82AB
-
RFQ
LP2987IM-5.0
Texas Instruments
IC REG LINEAR 5V 200MA 8SOIC
Na zalogi8670 pcs
120 µA
Positive
Enable
5V
-
1
200mA
0.35V @ 200mA
65dB (1kHz)
Over Current, Over Temperature, Short Circuit
LP2987
Tube
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
8-SOIC (0.154", 3.90mm Width)
8-SOIC
3.7 mA
RFQ
LDK120DM33R
STMicroelectronics
IC REG LINEAR 3.3V 200MA SOT23-5
Na zalogi124960 pcs
60 µA
Positive
Enable
3.3V
-
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
RP170N121D-TR-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 1.2V 300MA SOT23-5
Na zalogi191100 pcs
40 µA
Positive
Enable
1.2V
-
1
300mA
1.8V @ 300mA
70dB (1kHz)
Over Current, Over Temperature
RP170
Tape & Reel (TR)
RP170x
-40°C ~ 85°C (TA)
Surface Mount
10V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
SC560BULTRT
Semtech Corporation
IC REG LINEAR POS ADJ 8MLPQ-UT
Na zalogi75040 pcs
100 µA
Positive
Enable
1.2V
5V
2
300mA, 300mA
0.1V @ 200mA (Typ), 0.1V @ 200mA (Typ)
65dB ~ 40dB (1kHz)
Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
SC560
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Adjustable
8-UFQFN
8-MLPQ-UT (1.5x1.5)
-
RFQ
AP130-30RL-7
Diodes Incorporated
IC REG LINEAR 3V 300MA SC59
Na zalogi11900 pcs
100 µA
Positive
-
3V
-
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-236-3, SC-59, SOT-23-3
SC-59R
-
RFQ
MIC29151-3.3WT
Microchip Technology
IC REG LINEAR 3.3V 1.5A TO220-5
Na zalogi11753 pcs
-
Positive
Enable
3.3V
-
1
1.5A
0.6V @ 1.5A
-
Over Current, Over Temperature, Reverse Polarity, Transient Voltage
MIC29151
Tube
-
-40°C ~ 125°C
Through Hole
26V
Fixed
TO-220-5
TO-220-5
-
RFQ
MIC5201-4.8BS
Microchip Technology
IC REG LIN 4.8V 200MA SOT223-3
Na zalogi10330 pcs
400 µA
Positive
-
4.8V
-
1
150mA
0.4V @ 150mA
75dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
MIC5201
Tube
-
-40°C ~ 125°C
Surface Mount
26V
Fixed
TO-261-4, TO-261AA
SOT-223-3
2 mA
RFQ
LT3083MPQ#PBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 3A 5DDPAK
Na zalogi2346 pcs
50.5 µA
Positive
-
0V
23V
1
3A
0.51V @ 3A
85dB ~ 20dB (120Hz ~ 1MHz)
Over Current, Over Temperature, Short Circuit
LT3083
Tube
-
-55°C ~ 125°C
Surface Mount
23V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
5-DDPAK
1 mA
RFQ
S-1165B33MC-N6STFG
ABLIC Inc.
IC REG LINEAR 3.3V 200MA SOT23-5
Na zalogi94570 pcs
65 µA
Positive
Enable
3.3V
-
1
200mA
0.2V @ 200mA
70dB (1kHz)
Over Current
S-1165
Tape & Reel (TR)
S-1165
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
NCP4589DMX18TCG
onsemi
IC REG LINEAR 1.8V 300MA 6XDFN
Na zalogi4670 pcs
4 µA
Positive
Enable
1.8V
-
1
300mA
0.5V @ 300mA
70dB (1kHz)
Over Current
NCP4589
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
6-XFDFN
6-XDFN (1.2x1.2)
-
RFQ
MCP1701AT-3302I/CB
Microchip Technology
IC REG LIN 3.3V 150MA SOT23A-3
Na zalogi42810 pcs
4.5 µA
Positive
-
3.3V
-
1
150mA
0.7V @ 150mA
-
Short Circuit
MCP1701
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
10V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23A-3
-
RFQ
AP7173-SPG-13
Diodes Incorporated
IC REG LINEAR POS ADJ 1.5A 8SO
Na zalogi74040 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
8-SOIC (0.154", 3.90mm Width) Exposed Pad
8-SO-EP
-
RFQ
NCP715MX50TBG
onsemi
IC REG LINEAR 5V 50MA 6XDFN
Na zalogi83200 pcs
4.2 µA
Positive
-
5V
-
1
50mA
0.35V @ 50mA
56dB (100kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
NCP715
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
24V
Fixed
6-XFDFN
6-XDFN (1.5x1.5)
5.8 µA
RFQ
AP1117E33L-13
Diodes Incorporated
IC REG LINEAR 3.3V 1A SOT223
Na zalogi17600 pcs
10 mA
Positive
-
3.3V
-
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
LT1761IS5-2.8#TRPBF
Analog Devices Inc.
IC REG LIN 2.8V 100MA TSOT23-5
Na zalogi17183 pcs
-
Positive
Enable
2.8V
-
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
MAX603ESA
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 500MA 8SOIC
Na zalogi9850 pcs
35 µA
Positive
Enable
1.25V (5V)
11V
1
500mA
0.55V @ 500mA
-
Over Current, Over Temperature, Reverse Polarity
MAX603
Tube
-
-40°C ~ 85°C
Surface Mount
11.5V
Adjustable (Fixed)
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ