TLE4470GSXUMA1
Infineon Technologies
IC REG LINEAR POS ADJ 14DSO
Skladom3770 pcs
500 µA
Positive
Enable, Reset
5V, (5V), Tracking
20V
2
180mA, 350mA
0.5V @ 100mA, 0.6V @ 200mA
60dB (20Hz ~ 20kHz)
Over Current, Over Temperature, Short Circuit
TLE4470
Tape & Reel (TR)
Automotive, AEC-Q100, OPTIREG™
-40°C ~ 150°C (TJ)
Surface Mount
45V
Adjustable (Fixed)
14-SOIC (0.154", 3.90mm Width)
PG-DSO-14
15 mA
RFQ
AP2210N-3.0TRG1
Diodes Incorporated
IC REG LINEAR 3V 300MA SOT23-3
Skladom297350 pcs
180 µA
Positive
-
3V
-
1
300mA
0.5V @ 300mA
75dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
AP2210
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
13.2V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
15 mA
RFQ
LP2951DR
Texas Instruments
IC REG LIN POS ADJ 100MA 8SOIC
Skladom182990 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-SOIC (0.154', 3.90mm Width)
8-SOIC
14 mA
RFQ
LD1085P
STMicroelectronics
IC REG LINEAR POS ADJ 3A TO220FP
Skladom36906 pcs
10 mA
Positive
-
1.25V
28.5V
1
3A
1.5V @ 3A
72dB (120Hz)
Over Current, Over Temperature
LD1085
Tube
-
-40°C ~ 125°C
Through Hole
30V
Adjustable
TO-220-3 Full Pack
TO-220FP
-
RFQ
LM2931AZ-5.0
onsemi
IC REG LINEAR 5V 100MA TO92-3
Skladom13210 pcs
1 mA
Positive
-
5V
-
1
100mA
0.6V @ 100mA
90dB (120Hz)
Over Current, Over Temperature
LM2931
Bulk
-
-40°C ~ 125°C
Through Hole
26V
Fixed
TO-226-3, TO-92-3 Long Body
TO-92 (TO-226)
30 mA
RFQ
MIC29503BT
Microchip Technology
IC REG LINEAR POS ADJ 5A TO220-5
Skladom4400 pcs
-
Positive
-
1.25V
25V
1
5A
0.6V @ 5A
-
Over Current, Over Temperature, Reverse Polarity, Transient Voltage
MIC29503
Bulk
-
-40°C ~ 125°C
Through Hole
26V
Adjustable
TO-220-5
TO-220-5
-
RFQ
R1171S181B-E2-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 1.8V 1.5A 6HSOP
Skladom77340 pcs
320 µA
Positive
Enable
1.8V
-
1
1.5A
0.24V @ 300mA
50dB (1kHz)
Over Current, Over Temperature
R1171
Tape & Reel (TR)
R1171x
-40°C ~ 85°C
Surface Mount
6V
Fixed
6-SOIC Variation (0.154", 3.90mm Width), 4 Leads + 2 Fins
6-HSOP-J
-
RFQ
LT3029IMSE#PBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 16MSOP
Skladom7897 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
Tube
-
-40°C ~ 125°C
Surface Mount
20V
Adjustable
16-TFSOP (0.118", 3.00mm Width) Exposed Pad
16-MSOP-EP
-
RFQ
LT3065IMSE-1.2#PBF
Analog Devices Inc.
IC REG LINEAR 1.2V 500MA 12MSOP
Skladom12437 pcs
110 µA
Positive
Current Limit, Enable, Power Good, Soft Start
1.2V
-
1
500mA
0.51V @ 500mA
78dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3065
Tube
-
-40°C ~ 125°C
Surface Mount
45V
Fixed
12-TSSOP (0.118", 3.00mm Width) Exposed Pad
12-MSOP-EP
25 mA
RFQ
MIC5319-5.0YML
Micrel Inc.
IC REG LINEAR 500MA MICRO CAP
Skladom70720 pcs
150 µA
Positive
Enable
5V
-
1
500mA
0.4V @ 500mA
70dB ~ 60dB (1kHz ~ 10kHz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
6-VDFN Exposed Pad, 6-TMLF®
6-TMLF® (2x2)
-
RFQ
TL1963A-25DCQR
Texas Instruments
IC REG LINEAR 2.5V 1.5A SOT223-6
Skladom19225 pcs
1 mA
Positive
Enable
2.5V
-
1
1.5A
0.55V @ 1.5A
63dB (120Hz)
Over Temperature, Reverse Polarity
TL1963
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
SOT-223-6
SOT-223-6
80 mA
RFQ
SPX1117M3-L-5-0/TR
MaxLinear, Inc.
IC REG LINEAR 5V 800MA SOT223
Skladom274910 pcs
10 mA
Positive
-
5V
-
1
800mA
1.3V @ 800mA
70dB (120Hz)
Over Current, Over Temperature
SPX1117
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
NJM2863F03-TE1
Nisshinbo Micro Devices Inc.
IC REG LINEAR 3V 100MA SOT23-5
Skladom14440 pcs
180 µA
Positive
Enable
3V
-
1
100mA
0.18V @ 60mA
75dB (1kHz)
Over Temperature, Short Circuit
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
14V
Fixed
SC-74A, SOT-753
SOT-23-5 (MTP5)
-
RFQ
LT1965EMS8E-2.5
Analog Devices Inc.
IC REG LINEAR 2.5V 1.1A 8MSOP
Skladom3810 pcs
1.1 mA
Positive
Enable
2.5V
-
1
1.1A
0.49V @ 1.1A
75dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
-
Tube
-
-40°C ~ 125°C (TJ)
Surface Mount
20V
Fixed
8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
8-MSOP-EP
40 mA
RFQ
LT1962EMS8-2.5#TRPBF
Analog Devices Inc.
IC REG LINEAR 2.5V 300MA 8MSOP
Skladom10472 pcs
-
Positive
Enable
2.5V
-
1
300mA
0.43V @ 300mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1962
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
-
RFQ
KA278R33CTU
onsemi
IC REG LINEAR 3.3V 2A TO220F-4L
Skladom4520 pcs
10 mA
Positive
-
3.3V
-
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
TO-220F-4L
-
RFQ
PAM3101DAB250
Diodes Incorporated
IC REG LINEAR 2.5V 300MA SOT23-5
Skladom11520 pcs
90 µA
Positive
Enable
2.5V
-
1
300mA
0.45V @ 300mA
-
Over Current, Over Temperature, Short Circuit
PAM3101
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
BA07CC0WFP-E2
Rohm Semiconductor
IC REG LINEAR 7V 1A TO252-5
Skladom40310 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
NCV8716MT15TBG
onsemi
IC REG LINEAR 1.5V 80MA 6WDFN
Skladom54290 pcs
5.8 µA
Positive
-
1.5V
-
1
80mA
-
56dB (100kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
NCV8716
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
24V
Fixed
6-WDFN Exposed Pad
6-WDFN (2x2)
-
RFQ
SPX3819S-L-1-8/TR
MaxLinear, Inc.
IC REG LINEAR 1.8V 500MA 8SOIC
Skladom10610 pcs
8 µA
Positive
Enable
1.8V
-
1
500mA
-
-
Over Current, Over Temperature, Reverse Polarity
-
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
30 mA
RFQ
ISL9008AIEMZ-T
Renesas Electronics America Inc
IC REG LINEAR 3V 150MA SC70-5
Skladom53380 pcs
66 µA
Positive
Enable
3V
-
1
150mA
0.325V @ 150mA
-
Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
ISL9008
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
-
RFQ
MAX8510EXK18+T
Analog Devices Inc./Maxim Integrated
IC REG LINEAR 1.8V 120MA SC70-5
Skladom44970 pcs
90 µA
Positive
Enable
1.8V
-
1
120mA
-
78dB ~ 54dB (1kHz ~ 100kHz)
Over Current, Over Temperature
MAX8510
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
6V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
-
RFQ
FAN2558S13X
onsemi
IC REG LINEAR 1.3V 180MA SOT23-5
Skladom10870 pcs
150 µA
Positive
Enable, Power Good
1.3V
-
1
180mA
-
50dB (100kHz)
Over Current, Over Temperature
FAN2558
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TLV70518YFPR
Texas Instruments
IC REG LINEAR 1.8V 200MA 4DSBGA
Skladom174620 pcs
55 µA
Positive
Enable
1.8V
-
1
200mA
0.25V @ 200mA
80dB ~ 55dB (10kHz ~ 1MHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TLV705
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XFBGA, DSBGA
4-DSBGA
315 µA
RFQ
UPC29M12T-E1-AZ
Renesas Electronics America Inc
IC REG LINEAR FIXED LDO REG
Skladom29698 pcs
-
-
-
-
-
-
-
-
-
-
-
Bulk
*
-
-
-
-
-
-
-
RFQ
TLV1117-33IDCYG3
Texas Instruments
IC REG LIN 3.3V 800MA SOT223-4
Skladom116890 pcs
-
Positive
-
3.3V
-
1
800mA
1.3V @ 800mA
75dB (120Hz)
Over Current, Over Temperature
TLV1117
Tube
-
-40°C ~ 125°C
Surface Mount
15V
Fixed
TO-261-4, TO-261AA
SOT-223-4
-
RFQ
RP102K181D5-TR
Nisshinbo Micro Devices Inc.
IC REG LIN 1.85V 300MA DFN1820-6
Skladom88920 pcs
70 µA
Positive
Enable
1.85V
-
1
300mA
0.28V @ 300mA
80dB (1kHz)
Over Current
RP102
Tape & Reel (TR)
RP102x
-40°C ~ 85°C
Surface Mount
5.25V
Fixed
6-UFDFN Exposed Pad
DFN(PL)1820-6
-
RFQ
PQ018EH02ZPH
Sharp Microelectronics
IC REG LINEAR 1.8V 2A TO263
Skladom139340 pcs
-
-
-
-
-
-
-
-
-
-
-
Cut Tape (CT)
*
-
-
-
-
-
-
-
RFQ
TPS74512PQWDRVRQ1
Texas Instruments
IC REG LINEAR 1.2V 500MA 6WSON
Skladom83080 pcs
36 µA
Positive
Enable, Power Good
1.2V
-
1
500mA
0.285V @ 500mA
57dB ~ 35dB (1kHz ~ 1MHz)
Over Current, Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
TPS745
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TJ)
Surface Mount
6V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
-
RFQ
REG101NA-A/3K
Texas Instruments
IC REG LIN POS ADJ 100MA SOT23-5
Skladom25714 pcs
500 µA
Positive
Enable
2.5V
5.5V
1
100mA
0.13V @ 100mA
65dB (120Hz)
Over Current, Over Temperature
REG101
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
10V
Adjustable
SC-74A, SOT-753
SOT-23-5
650 µA
RFQ
MC79L05ACD
Texas Instruments
IC REG LINEAR -5V 100MA 8SOIC
Skladom99380 pcs
-
Negative
-
-5V
-
1
100mA
1.7V @ 40mA
49dB (120Hz)
Over Temperature, Short Circuit
MC79L05
Tube
-
0°C ~ 125°C
Surface Mount
-20V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
LT1763CDE-1.5#PBF
Analog Devices Inc.
IC REG LINEAR 1.5V 500MA 12DFN
Skladom10486 pcs
-
Positive
Enable
1.5V
-
1
500mA
0.45V @ 500mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT1763
Tube
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
12-WFDFN Exposed Pad
12-DFN (4x3)
-
RFQ
NCV8502PDW50R2G
onsemi
IC REG LINEAR 5V 150MA 16SOIC
Skladom11330 pcs
125 µA
Positive
Enable, Reset
5V
-
1
150mA
0.6V @ 150mA
-
Over Temperature, Reverse Polarity, Short Circuit
NCV8502
Tape & Reel (TR)
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
TPS75433QPWPR
Texas Instruments
IC REG LINEAR 3.3V 2A 20HTSSOP
Skladom12656 pcs
125 µA
Positive
Enable, Power Good, Reset Output
3.3V
-
1
2A
0.4V @ 2A
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
TPS75433
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
20-PowerTSSOP (0.173", 4.40mm Width)
20-HTSSOP
-
RFQ
MCP1700-1802E/TO
Microchip Technology
IC REG LINEAR 1.8V 200MA TO92-3
Skladom73810 pcs
4 µA
Positive
-
1.8V
-
1
200mA
0.35V @ 200mA
44dB (100Hz)
Over Current, Over Temperature, Short Circuit
MCP1700
Bag
-
-40°C ~ 125°C
Through Hole
6V
Fixed
TO-226-3, TO-92-3 (TO-226AA)
TO-92-3
-
RFQ
LDFMPT-TR
STMicroelectronics
IC REG LINEAR POS ADJ 500MA PPAK
Skladom28893 pcs
800 µA
Positive
Enable, Power Good
0.8V
12V
1
500mA
0.3V @ 500mA
62dB ~ 55dB (120Hz ~ 10kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
LDFMPT
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Adjustable
TO-252-5, DPak (4 Leads + Tab), TO-252AD
PPAK
-
RFQ
TPS7B4250QDBVRQ1
Texas Instruments
IC REG LIN POS ADJ 50MA SOT23-5
Skladom66020 pcs
90 µA
Positive
Enable
1.5V
18V
1
50mA
1V @ 50mA
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO)
TPS7B4250
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C
Surface Mount
40V
Adjustable
SC-74A, SOT-753
SOT-23-5
350 µA
RFQ
TPS7A0225PDQNR
Texas Instruments
IC REG LINEAR 2.5V 200MA 4X2SON
Skladom60620 pcs
60 nA
Positive
Enable
2.5V
-
1
200mA
0.36V @ 200mA
55dB (1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS7A0225
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
6V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
ADM7151ARDZ-04
Analog Devices Inc.
IC REG LIN POS ADJ 800MA 8SOIC
Skladom4377 pcs
7 mA
Positive
Enable
1.5V
5.1V
1
800mA
1.2V @ 800mA
94dB ~ 53dB (1kHz ~ 1MHz)
Over Temperature, Short Circuit
ADM7151
Tube
-
-40°C ~ 125°C
Surface Mount
16V
Adjustable
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SOIC-EP
12 mA
RFQ
RT9183-33GLF
Richtek USA Inc.
IC REG LINEAR 3.3V 1.5A TO252-3
Skladom17210 pcs
500 µA
Positive
-
3.3V
-
1
1.5A
0.5V @ 1.5A
-
Over Current, Over Temperature
RT9183
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252-3
-
RFQ
AZ1117S-ADJTRE1
Diodes Incorporated
IC REG LIN POS ADJ 1.25A TO263
Skladom9820 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
LE45CD-TR
STMicroelectronics
IC REG LINEAR 4.5V 100MA 8SO
Skladom55110 pcs
1 mA
Positive
Enable
4.5V
-
1
100mA
0.5V @ 100mA
77dB ~ 60dB (120Hz ~ 10kHz)
Over Current, Over Temperature
LE45
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
18V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
3 mA
RFQ
RT9055-GGWSC
Richtek USA Inc.
IC REG LINEAR 1.8V/1.8V 6WLCSP
Skladom112290 pcs
58 µA
Positive
Enable
1.8V, 1.8V
-
2
300mA, 300mA
0.4V @ 300mA, 0.4V @ 300mA
70dB ~ 38dB (100Hz ~ 300kHz)
Over Current, Over Temperature, Short Circuit
RT9055
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
6-UFBGA, WLCSP
6-WLCSP (1.2x0.80)
-
RFQ
KA7908TU
Fairchild Semiconductor
IC REG LINEAR FIXED NEG STND 8V
Skladom102210 pcs
6 mA
Negative
-
-8V
-
1
1A
2V @ 1A (Typ)
60dB (120Hz)
Over Temperature, Short Circuit
KA79
Bulk
-
0°C ~ 125°C
Through Hole
-35V
Fixed
TO-220-3
TO-220-3
-
RFQ
NCP151AAMX180070TCG
onsemi
IC REG LIN 1.8V/0.7V 300MA 4XDFN
Skladom186560 pcs
200 µA
Positive
Current Limit, Enable, Soft Start
1.8V, 0.7V
-
2
300mA, 300mA
-
70dB (1kHz)
Over Current, Over Temperature
NCP151
Tape & Reel (TR)
-
-40°C ~ 85°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-XDFN (1x1)
-
RFQ
NCV551SN28T1G
onsemi
IC REG LINEAR 2.8V 150MA 5TSOP
Skladom10410 pcs
8 µA
Positive
Enable
2.8V
-
1
150mA
0.15V @ 10mA
-
Over Current, Over Temperature
NCV551
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
12V
Fixed
SOT-23-5 Thin, TSOT-23-5
5-TSOP
8 µA
RFQ
BH30M0AWHFV-TR
Rohm Semiconductor
IC REG LINEAR 3V 300MA 6HVSOF
Skladom165130 pcs
95 µA
Positive
Enable
3V
-
1
300mA
0.09V @ 100mA
60dB (1kHz)
Over Current, Over Temperature
BH30M0
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
6-SMD, Flat Lead Exposed Pad
6-HVSOF
-
RFQ
KA278R33CYDTU
onsemi
IC REG LINEAR 3.3V 2A TO220F-4L
Skladom12800 pcs
10 mA
Positive
-
3.3V
-
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
ADP7118ARDZ-5.0-R7
Analog Devices Inc.
IC REG LINEAR 5V 200MA 8SOIC
Skladom18138 pcs
140 µA
Positive
Enable, Soft Start
5V
-
1
200mA
0.42V @ 200mA
88dB ~ 50dB (10kHz ~ 1MHz)
Over Current, Over Temperature
ADP7118
Tape & Reel (TR)
-
-40°C ~ 125°C (TA)
Surface Mount
20V
Fixed
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SOIC-EP
320 µA
RFQ
S-812C56AUA-C3KT2G
ABLIC Inc.
IC REG LINEAR 5.6V 75MA SOT89-3
Skladom72740 pcs
500 nA
Positive
-
5.6V
-
1
75mA
0.23V @ 100mA
-
-
S-812
Tape & Reel (TR)
S-812C
-40°C ~ 85°C (TA)
Surface Mount
16V
Fixed
TO-243AA
SOT-89-3
2.5 µA
RFQ