MIC5203-4.7BM5
Micrel Inc.
IC REG LINEAR LDO POS VOLT
Dalam stok129280 pcs
750 µA
Positive
Enable
4.7V
-
1
80mA
0.6V @ 80mA
-
Over Current, Over Temperature, Reverse Polarity
-
Bulk
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
3 mA
RFQ
LT3014HVES5#TRPBF
Analog Devices Inc.
IC REG LIN POS ADJ 20MA TSOT23-5
Dalam stok6231 pcs
20 µA
Positive
Enable
1.22V
60V
1
20mA
0.57V @ 20mA
70dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3014
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
80V
Adjustable
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
1 mA
RFQ
PQ050RDA2SZH
Sharp Microelectronics
IC REG LINEAR 5V 2A TO220-4
Dalam stok15800 pcs
8 mA
Positive
Enable
5V
-
1
2A
1V @ 2A
60dB (120Hz)
Over Current, Over Temperature
-
Tube
-
-40°C ~ 85°C
Through Hole
20V
Fixed
TO-220-4
TO-220-4
-
RFQ
LM7908CT
Texas Instruments
IC REG LINEAR -8V 1A TO220-3
Dalam stok188290 pcs
6 mA
Negative
-
-8V
-
1
1A
2V @ 1A (Typ)
60dB (120Hz)
Over Temperature, Short Circuit
-
Tube
-
0°C ~ 125°C
Through Hole
-35V
Fixed
TO-220-3
TO-220-3
-
RFQ
MIC29301-5.0BT
Microchip Technology
IC REG LINEAR 5V 3A TO220-5
Dalam stok4110 pcs
-
Positive
Enable
5V
-
1
3A
0.6V @ 3A
-
Over Current, Over Temperature, Reverse Polarity, Transient Voltage
MIC29301-5.0
Bulk
-
-40°C ~ 125°C
Through Hole
26V
Fixed
TO-220-5
TO-220-5
-
RFQ
AP7333-30SAG-7
Diodes Incorporated
IC REG LINEAR 3V 300MA SOT23
Dalam stok394540 pcs
75 µA
Positive
-
3V
-
1
300mA
0.55V @ 300mA
65dB (100Hz)
Over Current, Over Temperature, Short Circuit
AP7333
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
85 µA
RFQ
LP2985AIM5X-2.5
Texas Instruments
IC REG LINEAR 2.5V 150MA SOT23-5
Dalam stok6870 pcs
95 µA
Positive
Enable
2.5V
-
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
S-1112B33MC-L6STFU
ABLIC Inc.
IC REG LINEAR 3.3V 150MA SOT23-5
Dalam stok68820 pcs
1 µA
Positive
Enable
3.3V
-
1
150mA
0.26V @ 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
LT1965EMS8E-2.5
Linear Technology
LT1965 - 1.1A, LOW DROPOUT LINEA
Dalam stok6952 pcs
1.1 mA
Positive
Enable
2.5V
-
1
1.1A
0.49V @ 1.1A
75dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
-
Bulk
-
-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
MCP1826T-2502E/DC
Microchip Technology
IC REG LINEAR 2.5V 1A SOT223-5
Dalam stok51990 pcs
220 µA
Positive
Enable, Power Good
2.5V
-
1
1A
0.4V @ 1A
60dB (100Hz)
Over Temperature, Short Circuit, Under Voltage Lockout (UVLO)
MCP1826
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
SOT-223-6
SOT-223-5
-
RFQ
RT9166-33GVL
Richtek USA Inc.
IC REG LIN 3.3V 300MA SOT23-3L
Dalam stok284940 pcs
300 µA
Positive
-
3.3V
-
1
300mA
0.23V @ 300mA (Typ)
55dB (1kHz)
Over Current, Over Temperature
RT9166
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3L
-
RFQ
MC7812ACD2TR4G
onsemi
IC REG LINEAR 12V 1A D2PAK
Dalam stok51200 pcs
6 mA
Positive
-
12V
-
1
1A
2V @ 1A (Typ)
60dB (1kHz)
Over Temperature, Short Circuit
MC7812
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
35V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
D2PAK-3
-
RFQ
LP38691SD-3.3
Texas Instruments
IC REG LINEAR 3.3V 500MA 6WSON
Dalam stok15260 pcs
55 µA
Positive
-
3.3V
-
1
500mA
0.55V @ 500mA
55dB (120Hz)
Over Temperature
LP38691
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
10V
Fixed
6-WDFN Exposed Pad
6-WSON (3x3)
100 µA
RFQ
TLV71315PDQNR
Texas Instruments
IC REG LINEAR 1.5V 150MA 4X2SON
Dalam stok375400 pcs
75 µA
Positive
Enable
1.5V
-
1
150mA
1.02V @ 150mA
70dB ~ 55dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit, Under Voltage Lockout (UVLO)
TLV71315
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
S-812C31BMC-C4LT2G
ABLIC Inc.
IC REG LINEAR 3.1V 50MA SOT23-5
Dalam stok95760 pcs
500 nA
Positive
Enable
3.1V
-
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
TPS71433DRVR
Texas Instruments
IC REG LINEAR 3.3V 80MA 6WSON
Dalam stok86440 pcs
4.2 µA
Positive
Current Limit
3.3V
-
1
80mA
1.3V @ 80mA
59dB ~ 54dB (120Hz)
Over Current
TPS71433
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
7.4 µA
RFQ
ADP1714AUJZ-3.0-R7
Analog Devices Inc.
IC REG LINEAR 3V 300MA TSOT5
Dalam stok17720 pcs
70 µA
Positive
Enable, Tracking
3V
-
1
300mA
0.27V @ 300mA
65dB (1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
ADP1714
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
420 µA
RFQ
RAA7881562GSP#AB0
Renesas Electronics America Inc
PB-FREE IEC6100 ESD 14LD SOIC,-4
Dalam stok18159 pcs
-
-
-
-
-
-
-
-
-
-
-
Tape & Reel (TR)
-
-
Surface Mount
-
-
14-SOIC (0.154", 3.90mm Width)
14-SOIC
-
RFQ
XC6216C202PR-G
Torex Semiconductor Ltd
IC REG LIN POS ADJ 100MA SOT89-5
Dalam stok46810 pcs
9 µA
Positive
Enable
2V
25.4V
1
100mA
2.6V @ 100mA
30dB (1kHz)
Over Current, Over Temperature
XC6216
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
28V
Adjustable
SOT-89-5/6
SOT-89-5
-
RFQ
NJW4104U2-05A-TE1
Nisshinbo Micro Devices Inc.
IC REG LINEAR 5V 200MA SOT89-5
Dalam stok104470 pcs
13.5 µA
Positive
Enable
5V
-
1
200mA
0.18V @ 100mA
36dB (1kHz)
Over Current, Over Temperature
NJW4104
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
40V
Fixed
SOT-89-5/6
SOT-89-5
-
RFQ
PAM3101CAA330
Diodes Incorporated
IC REG LINEAR 3.3V 300MA SOT23-3
Dalam stok6190 pcs
90 µA
Positive
Enable
3.3V
-
1
300mA
0.23V @ 300mA
70dB ~ 65dB (100Hz ~ 1kHz)
Over Current, Over Temperature, Short Circuit
-
Bulk
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
90 µA
RFQ
NCP718ASN180T1G
onsemi
IC REG LIN 1.8V 300MA TSOT23-5
Dalam stok126150 pcs
8 µA
Positive
Soft Start
1.8V
-
1
300mA
-
60dB (1kHz)
Over Current, Over Temperature
NCP718
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
24V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
300 µA
RFQ
MIC5209-2.5YS-TR
Microchip Technology
IC REG LIN 2.5V 500MA SOT223-3
Dalam stok34702 pcs
170 µA
Positive
-
2.5V
-
1
500mA
0.6V @ 500mA
75dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
MIC5209
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
TO-261-4, TO-261AA
SOT-223-3
25 mA
RFQ
ISL9008AIEFZ-T
Intersil
IC REG LINEAR 2.5V 150MA SC70-5
Dalam stok54610 pcs
66 µA
Positive
Enable
2.5V
-
1
150mA
0.4V @ 150mA
-
Over Current, Over Temperature, Soft Start, Under Voltage Lockout (UVLO)
-
Bulk
-
-40°C ~ 85°C
Surface Mount
6.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
-
RFQ
UCC283T-ADJ
Texas Instruments
IC REG LINEAR POS ADJ 3A TO220-5
Dalam stok6358 pcs
650 µA
Positive
-
1.22V
8.5V
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
Adjustable
TO-220-5
TO-220-5
-
RFQ
BU30TD3WG-TR
Rohm Semiconductor
IC REG LINEAR 3V 200MA 5SSOP
Dalam stok182520 pcs
60 µA
Positive
Enable
3V
-
1
200mA
0.46V @ 200mA
70dB (1kHz)
Over Current, Over Temperature
BU30TD3
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-74A, SOT-753
5-SSOP
-
RFQ
S-L2985B18-H4T1
ABLIC Inc.
IC REG LINEAR 1.8V 150MA WLP-4B
Dalam stok3680 pcs
1 µA
Positive
Enable
1.8V
-
1
150mA
0.47V @ 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
LM117H
Texas Instruments
IC REG LINEAR POS ADJ 1.5A TO3
Dalam stok2594 pcs
5 mA
Positive
-
1.25V
37V
1
1.5A
-
80dB ~ 65dB (120Hz)
Over Current, Over Temperature, Short Circuit
LM117
Bulk
-
-55°C ~ 150°C (TJ)
Through Hole
40V
Adjustable
TO-205AD, TO-39-3 Metal Can
TO-3
-
RFQ
TLV71133285DDSER
Texas Instruments
IC REG LINEAR 3.3V/2.85V 6WSON
Dalam stok68800 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
L78M06CDT-TR
STMicroelectronics
IC REG LINEAR 6V 500MA DPAK
Dalam stok102930 pcs
6 mA
Positive
-
6V
-
1
500mA
-
59dB (120Hz)
Over Current, Over Temperature, Short Circuit
L78M06
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
-
RFQ
MIC5366-1.8YC5-TR
Microchip Technology
IC REG LINEAR 1.8V 150MA SC70-5
Dalam stok164300 pcs
39 µA
Positive
Enable
1.8V
-
1
150mA
0.38V @ 150mA
80dB ~ 65dB (1kHz ~ 10kHz)
Over Current, Over Temperature
MIC5366
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
-
RFQ
BD00HC5MEFJ-ME2
Rohm Semiconductor
IC REG LIN POS ADJ 1.5A 8HTSOP
Dalam stok47320 pcs
0.6 mA
Positive
Enable
1.5V
7V
1
1.5A
1.2V @ 1.5A
-
Over Current, Over Temperature, Soft Start
BD00HC5
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 105°C
Surface Mount
8V
Adjustable
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-HTSOP-J
1.2 mA
RFQ
S-13A1C25-U5T1U3
ABLIC Inc.
IC REG LINEAR 2.5V 1A SOT89-5
Dalam stok43347 pcs
1 µA
Positive
Enable
2.5V
-
1
1A
0.15V @ 300mA
65dB (1kHz)
Inrush Current Limit, Over Current, Thermal Shutdown
S-13A1
Tape & Reel (TR)
S-13A1
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
SOT-89-5/6
SOT-89-5
90 µA
RFQ
MAX1792EUA18/V+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 500MA 8UMAX
Dalam stok16016 pcs
250 µA
Positive
Enable, Reset
1.25V (1.8V)
5V
1
500mA
-
-
Over Current, Over Temperature
MAX1792
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TA)
Surface Mount
5.5V
Adjustable (Fixed)
8-TSSOP, 8-MSOP (0.118", 3.00mm Width) Exposed Pad
8-uMAX-EP|8-uSOP-EP
-
RFQ
MIC37101-3.3BM
Microchip Technology
IC REG LINEAR 3.3V 1A 8SOIC
Dalam stok7850 pcs
-
Positive
Enable
3.3V
-
1
1A
0.5V @ 1A
-
Over Current, Over Temperature
MIC37101-3.3
Bulk
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
-
RFQ
TC1186-2.5VCT713
Microchip Technology
IC REG LINEAR 2.5V 150MA SOT23-5
Dalam stok83700 pcs
80 µA
Positive
Enable
2.5V
-
1
150mA
0.4V @ 150mA
64dB (1kHz)
Over Current, Over Temperature
TC1186
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TLV70228PDBVR
Texas Instruments
IC REG LINEAR 2.8V 300MA SOT23-5
Dalam stok182640 pcs
55 µA
Positive
Enable
2.8V
-
1
300mA
0.38V @ 300mA
68dB (1kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TLV70228
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
370 µA
RFQ
MIC5310-MGYML
Micrel Inc.
IC REG LINEAR DUAL 150MA LDO
Dalam stok72730 pcs
120 µA
Positive
Enable
1.8V, 2.8V
-
2
150mA, 150mA
0.1V @ 150mA, 0.1V @ 150mA
70dB ~ 65dB (1kHz ~ 20kHz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
8-VFDFN Exposed Pad, 8-MLF®
8-MLF® (2x2)
190 µA
RFQ
ADP7104ACPZ-1.8-R7
Analog Devices Inc.
IC REG LINEAR 1.8V 500MA 8LFCSP
Dalam stok8417 pcs
900 µA
Positive
Enable, Power Good, Under Voltage Lockout
1.8V
-
1
500mA
-
-
Over Temperature, Short Circuit
ADP7104
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
8-WFDFN Exposed Pad, CSP
8-LFCSP-WD (3x3)
1.6 mA
RFQ
KA79M05RTM
Fairchild Semiconductor
IC REG LINEAR FIXED NEG STND 5V
Dalam stok5850 pcs
6 mA
Negative
-
-5V
-
1
500mA
1.1V @ 500mA
60dB (120Hz)
Over Temperature, Short Circuit
KA79M05
Bulk
-
0°C ~ 125°C
Surface Mount
-35V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
D-Pak
-
RFQ
NCP103AMX320TCG
onsemi
IC REG LINEAR 3.2V 150MA 4UDFN
Dalam stok3710 pcs
95 µA
Positive
Enable
3.2V
-
1
150mA
-
75dB (1kHz)
Over Current, Over Temperature
NCP103
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
4-UDFN Exposed Pad
4-UDFN (1.0x1.0)
-
RFQ
LP3962EMP-3.3
Texas Instruments
IC REG LINEAR 3.3V 1.5A SOT223-5
Dalam stok11402 pcs
9 mA
Positive
Enable
3.3V
-
1
1.5A
0.55V @ 1.5A
-
Over Current, Over Temperature, Short Circuit
LP3962
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
7V
Fixed
TO-261-5, TO-261AB
SOT-223-5
15 mA
RFQ
LT3065EDD#PBF
Analog Devices Inc.
IC REG LIN POS ADJ 500MA 10DFN
Dalam stok9998 pcs
110 µA
Positive
Current Limit, Enable, Power Good, Soft Start
0.6V
40V
1
500mA
0.51V @ 500mA
85dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3065
Tube
-
-40°C ~ 125°C
Surface Mount
45V
Adjustable
10-WFDFN Exposed Pad
10-DFN (3x3)
25 mA
RFQ
TPS72101DBVRG4
Texas Instruments
IC REG LIN POS ADJ 150MA SOT23-5
Dalam stok9370 pcs
120 µA
Positive
Enable
1.22V
2.5V
1
150mA
0.24V @ 150mA
48dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
TPS72101
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
SC-74A, SOT-753
SOT-23-5
850 µA
RFQ
ADP165ACBZ-1.8-R7
Analog Devices Inc.
IC REG LINEAR 1.8V 150MA 4WLCSP
Dalam stok59900 pcs
2.4 µA
Positive
Enable
1.8V
-
1
150mA
-
-
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
ADP165
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
4-WFBGA, WLCSP
4-WLCSP (0.96x0.96)
6.2 µA
RFQ
LT3027IMSE
Analog Devices Inc.
IC REG LINEAR POS ADJ 10MSOP
Dalam stok13810 pcs
50 µA
Positive
Enable
1.22V
20V
2
100mA, 100mA
0.45V @ 100mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
-
Tube
-
-40°C ~ 125°C (TJ)
Surface Mount
20V
Adjustable
10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
10-MSOP-EP
4 mA
RFQ
KF33BDT-TR
STMicroelectronics
IC REG LINEAR 3.3V 500MA DPAK
Dalam stok65380 pcs
1 mA
Positive
-
3.3V
-
1
500mA
0.7V @ 500mA
80dB ~ 60dB (120Hz ~ 10kHz)
Over Current, Over Temperature
KF33
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
12 mA
RFQ
ZXTR2012P5-13
Diodes Incorporated
IC REG LINEAR 12V 50MA POWERDI5
Dalam stok130230 pcs
400 µA
Positive
-
12V
-
1
50mA
-
45dB (100Hz)
-
ZXTR2012
Tape & Reel (TR)
Automotive, AEC-Q101
-40°C ~ 125°C
Surface Mount
100V
Fixed
PowerDI™ 5
PowerDI™ 5
900 µA
RFQ
ZLDO1117G15TA
Diodes Incorporated
IC REG LINEAR 1.5V 1A SOT223
Dalam stok9740 pcs
10 mA
Positive
-
1.5V
-
1
1A
1.35V @ 1A
80dB (120Hz)
Over Current, Over Temperature
ZLDO1117
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
18V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
L4940V12
STMicroelectronics
IC REG LINEAR 12V 1.5A TO220AB
Dalam stok8020 pcs
8 mA
Positive
-
12V
-
1
1.5A
0.9V @ 1.5A
61dB (120Hz)
Over Temperature, Reverse Polarity, Short Circuit
L4940
Tube
-
-40°C ~ 150°C
Through Hole
17V
Fixed
TO-220-3
TO-220
50 mA
RFQ