UA7810CKCS
Texas Instruments
IC REG LINEAR 10V 1.5A TO220-3
Nan stok78910 pcs
-
Positive
-
10V
-
1
1.5A
2V @ 1A
78dB (120Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
UA7810
Tube
-
0°C ~ 125°C
Through Hole
28V
Fixed
TO-220-3
TO-220-3
-
RFQ
AP1117Y18G-13
Diodes Incorporated
IC REG LINEAR 1.8V 1A SOT89-3
Nan stok6050 pcs
10 mA
Positive
-
1.8V
-
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-243AA
SOT-89-3
-
RFQ
LD39020DTPU11R
STMicroelectronics
IC REG LINEAR 1.1V 200MA 4DFN
Nan stok216200 pcs
40 µA
Positive
Enable
1.1V
-
1
200mA
0.35V @ 200mA
80dB ~ 55dB (1kHz ~ 100kHz)
Over Current, Over Temperature, Soft Start
LD39020
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-DFN (1x1)
-
RFQ
TPS7A4450DGQR
Texas Instruments
50-MA, 65-V, LOW-IQ, LDO LINEAR
Nan stok14998 pcs
9 µA
Positive
Current Limit, Enable, Power Good
5V
-
1
50mA
0.8V @ 50mA
76dB ~ 73dB (10Hz ~ 100kHz)
Over Current, Over Temperature
-
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
65V
Fixed
10-TFSOP, 10-MSOP (0.118", 3.00mm Width) Exposed Pad
10-HVSSOP
-
RFQ
NCP711BMT300TBG
onsemi
IC REG LINEAR 3V 100MA 6WDFN
Nan stok75790 pcs
3 µA
Positive
Enable, Power Good
3V
-
1
100mA
0.355V @ 100mA
80dB ~ 48dB (10Hz ~ 1MHz)
Over Current, Over Temperature
NCP711
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
18V
Fixed
6-WDFN Exposed Pad
6-WDFN (2x2)
-
RFQ
AS1360-18-T
ams OSRAM
IC REG LINEAR 1.8V 110MA SOT23-3
Nan stok65010 pcs
1.5 µA
Positive
-
1.8V
-
1
110mA
0.3V @ 20mA
-
Over Current, Short Circuit
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
20V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
3 µA
RFQ
TPS76718QPWPR
Texas Instruments
IC REG LINEAR 1.8V 1A 20HTSSOP
Nan stok18277 pcs
125 µA
Positive
Enable, Reset
1.8V
-
1
1A
-
60dB (1kHz)
Over Current, Over Temperature, Reverse Polarity
TPS76718
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
20-PowerTSSOP (0.173", 4.40mm Width)
20-HTSSOP
-
RFQ
LT3050EMSE-5#PBF
Analog Devices Inc.
IC REG LINEAR 5V 100MA 12MSOP
Nan stok16028 pcs
90 µA
Positive
Current Limit, Enable, Soft Start
5V
-
1
100mA
0.55V @ 100mA
66dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3050
Tube
-
-40°C ~ 125°C
Surface Mount
45V
Fixed
12-TSSOP (0.118', 3.00mm Width) Exposed Pad
12-MSOP-EP
5.2 mA
RFQ
ISL9008AIEFZ-T
Intersil
IC REG LINEAR 2.5V 150MA SC70-5
Nan 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
MIC5236-3.3YMM-TR
Microchip Technology
IC REG LINEAR 3.3V 150MA 8MSOP
Nan stok12352 pcs
30 µA
Positive
Enable
3.3V
-
1
150mA
0.5V @ 150mA
-
Load Dump, Over Current, Over Temperature, Over Voltage, Reverse Polarity
MIC5236
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-MSOP
5 mA
RFQ
MIC5249-1.5YMM
Microchip Technology
IC REG LINEAR 1.5V 300MA 8MSOP
Nan stok51500 pcs
200 µA
Positive
Enable, Reset
1.5V
-
1
300mA
0.6V @ 300mA
65dB (120Hz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
MIC5249
Tube
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
8-MSOP
-
RFQ
LD1086D2T33TR
STMicroelectronics
IC REG LINEAR 3.3V 1.5A D2PAK
Nan stok31923 pcs
10 mA
Positive
-
3.3V
-
1
1.5A
1.5V @ 1.5A
79dB (120Hz)
Over Current, Over Temperature
LD1086
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
D2PAK
-
RFQ
ADM7170ACPZ-2.5-R7
Analog Devices Inc.
IC REG LINEAR 2.5V 500MA 8LFCSP
Nan stok13504 pcs
2 mA
Positive
Enable, Soft Start
2.5V
-
1
500mA
-
-
Over Current, Over Temperature
ADM7170
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
8-WFDFN Exposed Pad, CSP
8-LFCSP-WD (3x3)
5.1 mA
RFQ
L4947PD013TR
STMicroelectronics
IC REG LINEAR 5V 500MA POWERSO20
Nan stok14760 pcs
13 mA
Positive
Reset
5V
-
1
500mA
0.75V @ 500mA
60dB (120Hz)
Over Temperature, Reverse Polarity, Short Circuit
L4947
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
26V
Fixed
20-SOIC (0.433", 11.00mm Width) Exposed Pad
PowerSO-20
180 mA
RFQ
BU18TA2WHFV-TR
Rohm Semiconductor
IC REG LINEAR 1.8V 200MA HVSOF5
Nan stok116080 pcs
95 µA
Positive
Enable
1.8V
-
1
200mA
-
70dB (1kHz)
Over Current, Over Temperature
BU18TA2
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SOT-665
5-HVSOF
-
RFQ
NCP698SQ15T1G
onsemi
IC REG LINEAR 1.5V 150MA SC82AB
Nan stok215810 pcs
6 µA
Positive
Enable
1.5V
-
1
150mA
1.07V @ 150mA
-
Over Current, Over Temperature
NCP698
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
SC-82A, SOT-343
SC-82AB
-
RFQ
TLE4276GV
Infineon Technologies
IC REG LINEAR VOLT TLE4276
Nan stok14310 pcs
220 µA
Positive
Inhibit
2.5V
20V
1
400mA
0.5V @ 250mA
54dB (100Hz)
Antisaturation, Over Temperature, Reverse Polarity, Short Circuit
-
Bulk
Automotive, AEC-Q100
-40°C ~ 150°C (TJ)
Surface Mount
40V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
P-TO220-5-122
25 mA
RFQ
TLV70725DQNR
Texas Instruments
IC REG LINEAR 2.5V 200MA 4X2SON
Nan stok414630 pcs
50 µA
Positive
Enable
2.5V
-
1
200mA
0.3V @ 150mA
70dB ~ 50dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Short Circuit, Reverse Polarity
TLV707
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
4-XDFN Exposed Pad
4-X2SON (1x1)
-
RFQ
AN77L07M-E1
Panasonic Electronic Components
IC REG LINEAR 7V 100MA 3HSIP
Nan stok16540 pcs
5 mA
Positive
-
7V
-
1
100mA
-
65dB (120Hz)
Over Current, Over Temperature, Short Circuit
AN77L07
Tape & Reel (TR)
-
-30°C ~ 125°C
Surface Mount
17.78V
Fixed
TO-243AA
3-HSIP
-
RFQ
TPS7A8701RTJR
Texas Instruments
IC REG LIN POS ADJ 500MA 20QFN
Nan stok41870 pcs
-
Positive
Enable
0.8V
5.2V
2
500mA
0.1V @ 500mA
40dB (500kHz)
-
TPS7A8701
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
6.5V
Adjustable
20-WFQFN Exposed Pad
20-QFN (4x4)
4 mA
RFQ
KA78M15TU
onsemi
IC REG LINEAR 15V 500MA TO220-3
Nan stok12270 pcs
6 mA
Positive
-
15V
-
1
500mA
2V @ 500mA (Typ)
70dB (120Hz)
Over Temperature, Short Circuit
KA78M15
Tube
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220-3
-
RFQ
TPS78225DDCT
Texas Instruments
IC REG LINEAR 2.5V 150MA SOT23-5
Nan stok48620 pcs
1.3 µA
Positive
Enable
2.5V
-
1
150mA
0.25V @ 150mA
40dB ~ 15dB (10Hz ~ 1kHz)
Over Current, Over Temperature, Reverse Polarity
TPS78225
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
SOT-23-THIN
8 µA
RFQ
LM3940IMPX-3.3
Texas Instruments
IC REG LINEAR 3.3V 1A SOT223-4
Nan stok28777 pcs
-
Positive
-
3.3V
-
1
1A
0.2V @ 100mA
-
Over Temperature, Short Circuit
LM3940
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
7.5V
Fixed
TO-261-4, TO-261AA
SOT-223-4
-
RFQ
MC78M05CT
onsemi
IC REG LINEAR 5V 500MA TO220AB
Nan stok14430 pcs
-
Positive
-
5V
-
1
500mA
-
80dB (120Hz)
Over Temperature, Short Circuit
MC78M05
Tube
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220
-
RFQ
ZXCL5213V28H5TA
Diodes Incorporated
IC REG LINEAR 2.8V 150MA SC70-5
Nan stok16310 pcs
50 µA
Positive
Enable
2.8V
-
1
150mA
0.28V @ 100mA
-
Over Current, Over Temperature
ZXCL5213V28
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
120 µA
RFQ
S-1170B34PD-OTTTFG
ABLIC Inc.
IC REG LINEAR 3.4V 800MA 6HSON
Nan stok7830 pcs
1 µA
Positive
Enable
3.4V
-
1
800mA
0.18V @ 300mA
65dB (1kHz)
Over Current, Thermal Shutdown
-
Tape & Reel (TR)
S-1170
-40°C ~ 85°C (TA)
Surface Mount
6.5V
Fixed
6-SMD, Flat Lead Exposed Pad
6-HSON (A) (2.9x2.8)
160 µA
RFQ
LM7905CT
Fairchild Semiconductor
LM79 3-TERMINAL, 1.5A NEGATIVE V
Nan stok27140 pcs
6 mA
Negative
-
-5V
-
1
1A
2V @ 1A (Typ)
60dB (120Hz)
Over Temperature, Short Circuit
LM790
Bulk
-
0°C ~ 125°C
Through Hole
-35V
Fixed
TO-220-3
TO-220-3
-
RFQ
AP2204K-3.3TRG1
Diodes Incorporated
IC REG LINEAR 3.3V 150MA SOT23-5
Nan stok201270 pcs
50 µA
Positive
Enable
3.3V
-
1
150mA
0.5V @ 150mA
60dB (100Hz ~ 1kHz)
Over Current, Over Temperature
AP2204
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
24V
Fixed
SC-74A, SOT-753
SOT-23-5
2.5 mA
RFQ
SN105125DBVRG4
Texas Instruments
IC REG LINEAR 1.2V 150MA SOT23-5
Nan stok17660 pcs
1 µA
Positive
Enable, Power Good
1.2V
-
1
150mA
1V @ 150mA
-
Over Temperature, Under Voltage Lockout (UVLO)
SN105125
Tape & Reel (TR)
-
0°C ~ 70°C
Surface Mount
5.25V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
TPS719285-285DRVR
Texas Instruments
IC REG LINEAR 2.85V 200MA 6WSON
Nan stok38920 pcs
160 µA
Positive
Enable
2.85V
-
2
200mA
0.4V @ 200mA
63dB ~ 44dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
TPS719285
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
250 µA
RFQ
RP130N121D-TR-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 1.2V 150MA SOT23-5
Nan stok195990 pcs
58 µA
Positive
Enable
1.2V
-
1
150mA
1.03V @ 150mA
80dB (1kHz)
Over Current
RP130
Tape & Reel (TR)
RP130x
-40°C ~ 105°C (TA)
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
NCV2931AST-5.0T3
onsemi
IC REG LINEAR 5V 100MA SOT223
Nan stok11990 pcs
1 mA
Positive
-
5V
-
1
100mA
0.6V @ 100mA
90dB (120Hz)
Over Current, Over Temperature
NCV2931
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C
Surface Mount
26V
Fixed
TO-261-4, TO-261AA
SOT-223
30 mA
RFQ
BD3940FP-E2
Rohm Semiconductor
IC REG LINEAR 3.3V 500MA TO252
Nan stok15022 pcs
30 µA
Positive
-
3.3V
-
1
500mA
0.9V @ 100mA
55dB (120Hz)
Over Current, Over Temperature
BD3940
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
25V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252, (D-Pak)
40 µA
RFQ
TLV70019DDCR
Texas Instruments
IC REG LINEAR 1.9V 200MA SOT23-5
Nan stok376860 pcs
55 µA
Positive
Enable
1.9V
-
1
200mA
0.25V @ 200mA
68dB (1kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TLV70019
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
SOT-23-THIN
270 µA
RFQ
MC78L05ACPRAG
onsemi
IC REG LINEAR 5V 100MA TO92-3
Nan stok246990 pcs
6 mA
Positive
-
5V
-
1
100mA
-
49dB (120Hz)
Over Temperature, Short Circuit
MC78L05
Tape & Reel (TR)
-
0°C ~ 125°C
Through Hole
30V
Fixed
TO-226-3, TO-92-3 Long Body (Formed Leads)
TO-92 (TO-226)
-
RFQ
TPS7A2618DRVR
Texas Instruments
IC REG LINEAR 1.8V 500MA 6WSON
Nan stok70950 pcs
4.5 µA
Positive
Enable, Power Good
1.8V
-
1
500mA
0.33V @ 500mA
75dB ~ 52dB (10Hz ~ 1kHz)
Over Current, Over Temperature, UVLO
TPS7A2618
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
18V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
-
RFQ
LM1117T-1.8
Texas Instruments
IC REG LINEAR FIXED LDO REG
Nan stok88800 pcs
10 mA
Positive
Current Limit
1.8V
-
1
800mA
1.3V @ 800mA
-
Over Current, Over Temperature
-
Bulk
-
0°C ~ 125°C (TJ)
Through Hole
15V
Fixed
TO-220-3
TO-220-3
-
RFQ
NCV8730ASNADJT1G
onsemi
IC REG LIN POS ADJ 150MA 5TSOP
Nan stok93070 pcs
3 µA
Positive
Enable
1.2V
24V
1
150mA
0.48V @ 150mA
80dB ~ 42dB (10Hz ~ 100kHz)
Over Current, Over Temperature
NCV8730
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TJ)
Surface Mount
38V
Adjustable
SOT-23-5 Thin, TSOT-23-5
5-TSOP
-
RFQ
NCP170AXV180T2G
onsemi
IC REG LIN 1.8V 150MA SOT563-6
Nan stok230070 pcs
900 nA
Positive
Enable
1.8V
-
1
150mA
0.48V @ 150mA
57dB (1kHz)
Over Current, Over Temperature
NCP170
Tape & Reel (TR)
-
-40°C ~ 85°C (TJ)
Surface Mount
5.5V
Fixed
SOT-563, SOT-666
SOT-563
-
RFQ
LP5951MGX-1.3
Texas Instruments
IC REG LINEAR 1.3V 150MA SC70-5
Nan stok6680 pcs
55 µA
Positive
Enable
1.3V
-
1
150mA
0.35V @ 150mA
60dB ~ 50dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Short Circuit
LP5951
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
70 µA
RFQ
KA79L05AD
onsemi
IC REG LINEAR -5V 100MA 8SOP
Nan stok12530 pcs
5.5 mA
Negative
-
-5V
-
1
100mA
-
60dB (120Hz)
Over Temperature, Short Circuit
KA79L05
Tube
-
0°C ~ 125°C
Surface Mount
-30V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
6 mA
RFQ
LP2966IMM-2518
Texas Instruments
IC REG LIN 2.5/1.8V 150MA 8VSSOP
Nan stok8550 pcs
300 µA
Positive
Enable
2.5V, 1.8V
-
2
150mA
0.27V @ 150mA
60dB ~ 40dB (120Hz)
Over Current, Over Temperature, Short Circuit
LP2966
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
7V
Fixed
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
8-VSSOP
600 µA
RFQ
TPS73125DBVT
Texas Instruments
IC REG LINEAR 2.5V 150MA SOT23-5
Nan stok54230 pcs
550 µA
Positive
Enable
2.5V
-
1
150mA
0.1V @ 150mA
58dB ~ 37dB (100Hz ~ 10kHz)
Over Current, Over Temperature, Short Circuit, Reverse Polarity
TPS73125
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
750 µA
RFQ
ADP163AUJZ-R7
Analog Devices Inc.
IC REG LIN POS ADJ 150MA TSOT23
Nan stok50750 pcs
1.25 µA
Positive
Enable
1V
4.2V
1
150mA
-
72dB ~ 50dB (100Hz ~ 1kHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
ADP163
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
65 µA
RFQ
L4931CD27-TR
STMicroelectronics
IC REG LINEAR 2.7V 250MA 8SO
Nan stok10300 pcs
1 mA
Positive
-
2.7V
-
1
250mA
0.8V @ 250mA
74dB ~ 55dB (120Hz ~ 10kHz)
Over Current, Over Temperature
L4931
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
8-SOIC (0.154", 3.90mm Width)
8-SOIC
6 mA
RFQ
AP7313-30SAG-7
Diodes Incorporated
IC REG LINEAR 3V 150MA SOT23
Nan stok496900 pcs
75 µA
Positive
-
3V
-
1
150mA
0.3V @ 150mA
65dB (100Hz)
Over Current, Over Temperature, Short Circuit
AP7313
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
TPS79601DCQ
Texas Instruments
IC REG LINEAR POS ADJ 1A SOT223
Nan stok21792 pcs
385 µA
Positive
Enable
1.2V
5.5V
1
1A
-
59dB ~ 42dB (100Hz ~ 100kHz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS79601
Tube
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
SOT-223-6
SOT-223-6
-
RFQ
LM140LAH-5.0
Texas Instruments
IC REG LINEAR 5V 100MA TO39-3
Nan stok2313 pcs
3 mA
Positive
-
5V
-
1
100mA
2V @ 1A
72dB (120Hz)
Over Temperature, Short Circuit
LM140
Bulk
-
-55°C ~ 125°C
Through Hole
35V
Fixed
TO-205AD, TO-39-3 Metal Can
TO-3
4.5 mA
RFQ
TPS73018DBVT
Texas Instruments
IC REG LINEAR 1.8V 200MA SOT23-5
Nan stok62050 pcs
250 µA
Positive
Enable
1.8V
-
1
200mA
0.21V @ 200mA
68dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Under Voltage Lockout (UVLO)
TPS73018
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
NJM2831F05-TE1
Nisshinbo Micro Devices Inc.
IC REG LINEAR 5V 100MA SOT23-5
Nan stok100130 pcs
180 µA
Positive
Enable
5V
-
1
100mA
0.1V @ 60mA
75dB (1kHz)
Over Current, Over Temperature, Short Circuit
NJM2831
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
18V
Fixed
SC-74A, SOT-753
SOT-23-5 (MTP5)
-
RFQ