OPA4130UA
Texas Instruments
IC OPAMP JFET 4 CIRCUIT 14SOIC
I roto i te taonga5506 pcs
-
Tube
OPA4130
36 V
4.5 V
-
-
-
-
200 µV
5 pA
1 MHz
-
2V/µs
18 mA
J-FET
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
530µA (x4 Channels)
-
-
RFQ
5962-8853901EA
Analog Devices Inc.
IC INST AMP 1 CIRCUIT 16CDIP
I roto i te taonga16340 pcs
1 MHz
Tube
5962-8853901
36 V
12 V
-
-
-
-
1 mV
1 µA
1 MHz
-
5V/µs
-
Instrumentation
1
16-CDIP
16-CDIP (0.300", 7.62mm)
-
Through Hole
-55°C ~ 125°C
5mA
-
-
RFQ
AD8058AR
Analog Devices Inc.
IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
I roto i te taonga14450 pcs
325 MHz
Tube
AD8058
12 V
3 V
-
-
-
-
1 mV
500 nA
-
-
1150V/µs
-
Voltage Feedback
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
14mA
-
-
RFQ
LT1814CGN#PBF
Analog Devices Inc.
IC OPAMP VFB 4 CIRCUIT 16SSOP
I roto i te taonga8132 pcs
200 MHz
Tube
LT1814
12.6 V
2.5 V
-
-
-
-
500 µV
900 nA
100 MHz
-
750V/µs
60 mA
Voltage Feedback
4
16-SSOP
16-SSOP (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
3mA (x4 Channels)
LT®
-
RFQ
TSM104WIDR
Texas Instruments
IC OPAMP GP 4 CIRCUIT 16SOIC
I roto i te taonga107250 pcs
-
Tape & Reel (TR)
TSM104
30 V
3 V
-
-
-
-
1 mV
30 nA
900 kHz
-
0.3V/µs
40 mA
General Purpose
4
16-SOIC
16-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 105°C
1.4mA (x4 Channels)
-
-
RFQ
LMV722IDR
Texas Instruments
IC OPAMP GP 2 CIRCUIT 8SOIC
I roto i te taonga81340 pcs
-
Tape & Reel (TR)
LMV722
5.5 V
2.2 V
-
-
-
-
80 µV
260 nA
10 MHz
-
5.25V/µs
52.6 mA
General Purpose
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 105°C (TJ)
1.81mA (x2 Channels)
LMV®
-
RFQ
TLC2274CPWR
Texas Instruments
IC OPAMP GP 4 CIRCUIT 14TSSOP
I roto i te taonga32657 pcs
-
Tape & Reel (TR)
TLC2274
16 V
4.4 V
-
-
-
-
300 µV
1 pA
2.25 MHz
-
3.6V/µs
50 mA
General Purpose
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
0°C ~ 70°C (TA)
4.8mA (x4 Channels)
-
-
RFQ
AD8607ARZ-REEL
Analog Devices Inc.
IC CMOS 2 CIRCUIT 8SOIC
I roto i te taonga14621 pcs
-
Tape & Reel (TR)
AD8607
5 V
1.8 V
-
-
-
-
12 µV
0.2 pA
400 kHz
-
0.1V/µs
70 mA
CMOS
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
40µA (x2 Channels)
-
-
RFQ
AD8227ARZ-R7
Analog Devices Inc.
IC INST AMP 1 CIRCUIT 8SOIC
I roto i te taonga13187 pcs
250 kHz
Tape & Reel (TR)
AD8227
36 V
2.2 V
-
-
-
-
200 µV
20 nA
-
-
0.8V/µs
13 mA
Instrumentation
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
350µA
-
-
RFQ
LT1122DCN8
ADI (Analog Devices, Inc.)
IC OPAMP JFET 13MHZ 8DIP
I roto i te taonga3455 pcs
-
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LT1122
Tube
130µV
12pA
13MHz
±5 V ~ 18 V
75 V/µs
-
J-FET
1
8-PDIP
8-DIP (0.300", 7.62mm)
-
Through Hole
-40°C ~ 85°C
7.8mA
-
J-FET Amplifier 1 Circuit 8-PDIP
RFQ
TS27L4IDT
STMicroelectronics
IC CMOS 4 CIRCUIT 14SO
I roto i te taonga51990 pcs
-
Tape & Reel (TR)
TS27L4
16 V
3 V
-
-
-
-
1.1 mV
1 pA
100 kHz
-
0.04V/µs
45 mA
CMOS
4
14-SO
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
10µA (x4 Channels)
-
-
RFQ
OPA837IDCKR
Texas Instruments
IC OPAMP VFB 1 CIRCUIT SC70-5
I roto i te taonga26889 pcs
-
Tape & Reel (TR)
OPA837
5.4 V
2.7 V
-
-
-
-
30 µV
340 nA
50 MHz
-
105V/µs
-
Voltage Feedback
1
SC-70-5
5-TSSOP, SC-70-5, SOT-353
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
592µA
-
-
RFQ
OPA637AP
Texas Instruments
IC OPAMP GP 1 CIRCUIT 8DIP
I roto i te taonga1388 pcs
-
Tube
OPA637
36 V
9 V
-
-
-
-
130 µV
2 pA
80 MHz
-
135V/µs
45 mA
General Purpose
1
8-PDIP
8-DIP (0.300", 7.62mm)
-
Through Hole
-25°C ~ 85°C
7mA
Difet®
-
RFQ
TLV9162IPWR
Texas Instruments
DUAL, 16-V, 10-MHZ, RAIL-TO-RAIL
I roto i te taonga57020 pcs
-
Tape & Reel (TR)
-
16 V
2.7 V
-
-
-
-
210 µV
10 pA
11 MHz
-
33V/µs
73 mA
General Purpose
2
8-TSSOP
8-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C (TA)
2.4mA (x2 Channels)
TLV916x
-
RFQ
AD8622ARMZ
Analog Devices Inc.
IC OPAMP GP 2 CIRCUIT 8MSOP
I roto i te taonga9369 pcs
-
Tube
AD8622
30 V
5 V
-
-
-
-
10 µV
45 pA
560 kHz
-
0.48V/µs
40 mA
General Purpose
2
8-MSOP
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
215µA (x2 Channels)
-
-
RFQ
TLC2254AIPW
Texas Instruments
IC OPAMP GP 4 CIRCUIT 14TSSOP
I roto i te taonga16898 pcs
-
Tube
TLC2254
16 V
4.4 V
-
-
-
-
200 µV
1 pA
210 kHz
-
0.12V/µs
50 mA
General Purpose
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
160µA (x4 Channels)
LinCMOS™
-
RFQ
TLC2272CPSR
Texas Instruments
IC CMOS 2 CIRCUIT 8SO
I roto i te taonga36534 pcs
-
Tape & Reel (TR)
TLC2272
16 V
4.4 V
-
-
-
-
300 µV
1 pA
2.25 MHz
-
3.6V/µs
50 mA
CMOS
2
8-SO
8-SOIC (0.209", 5.30mm Width)
Rail-to-Rail
Surface Mount
0°C ~ 70°C (TA)
2.4mA (x2 Channels)
-
-
RFQ
TS321AID
STMicroelectronics
IC OPAMP GP 1 CIRCUIT 8SOIC
I roto i te taonga13660 pcs
-
Tube
TS321
30 V
3 V
-
-
-
-
500 µV
20 nA
800 kHz
-
0.4V/µs
40 mA
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
600µA
-
-
RFQ
TLV2765CDR
Texas Instruments
IC OPAMP GP 4 CIRCUIT 16SOIC
I roto i te taonga16067 pcs
-
Tape & Reel (TR)
TLV2765
3.6 V
1.8 V
-
-
-
-
550 µV
3 pA
500 kHz
-
0.23V/µs
10.2 mA
General Purpose
4
16-SOIC
16-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
0°C ~ 70°C
20µA (x4 Channels)
-
-
RFQ
LT1801IMS8#PBF
Analog Devices Inc.
IC OPAMP GP 2 CIRCUIT 8MSOP
I roto i te taonga7748 pcs
-
Tube
LT1801
12.6 V
2.3 V
-
-
-
-
75 µV
25 nA
80 MHz
-
25V/µs
50 mA
General Purpose
2
8-MSOP
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
1.6mA (x2 Channels)
LT®
-
RFQ
ISL28113FHZ-T7
Renesas Electronics America Inc
IC OPAMP GP 1 CIRCUIT SOT23-5
I roto i te taonga131140 pcs
-
Tape & Reel (TR)
ISL28113
5.5 V
1.8 V
-
-
-
-
500 µV
3 pA
2 MHz
-
1V/µs
22 mA
General Purpose
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
90µA
-
-
RFQ
OPA2336EA/2K5
Texas Instruments
IC CMOS 2 CIRCUIT 8VSSOP
I roto i te taonga22180 pcs
-
Tape & Reel (TR)
OPA2336
5.5 V
2.3 V
-
-
-
-
60 µV
1 pA
100 kHz
-
0.03V/µs
5 mA
CMOS
2
8-VSSOP
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
20µA (x2 Channels)
MicroAmplifier™
-
RFQ
LT1620IS8#TRPBF
Analog Devices Inc.
IC CURRENT SENSE 1 CIRCUIT 8SO
I roto i te taonga10897 pcs
-
Tape & Reel (TR)
LT1620
5.5 V
4.5 V
-
-
-
-
6 mV
20 nA
-
-
-
-
Current Sense
1
8-SO
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
2.3mA
-
-
RFQ
AD8009AR
Analog Devices Inc.
IC OPAMP CFA 1 CIRCUIT 8SOIC
I roto i te taonga12960 pcs
1 GHz
Tube
AD8009
12 V
5 V
-
-
-
-
2 mV
50 µA
-
-
5500V/µs
175 mA
Current Feedback
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
16mA
-
-
RFQ
OPA4140AID
Texas Instruments
IC OPAMP JFET 4 CIRCUIT 14SOIC
I roto i te taonga6337 pcs
-
Tube
OPA4140
36 V
4.5 V
-
-
-
-
30 µV
0.5 pA
11 MHz
-
20V/µs
36 mA
J-FET
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
1.8mA (x4 Channels)
-
-
RFQ
ICL7612BCPA
Analog Devices Inc./Maxim Integrated
IC OPAMP GP 1 CIRCUIT 8DIP
I roto i te taonga17290 pcs
-
Tube
ICL7612
16 V
2 V
-
-
-
-
5 mV
1 pA
1.4 MHz
-
1.6V/µs
-
General Purpose
1
8-PDIP
8-DIP (0.300", 7.62mm)
Rail-to-Rail
Through Hole
0°C ~ 70°C
1mA
-
-
RFQ
PGA103U
Texas Instruments
IC OPAMP PGA 1 CIRCUIT 8SOIC
I roto i te taonga5266 pcs
1.5 MHz
Tube
PGA103
36 V
9 V
-
-
-
-
200 µV
50 nA
-
-
9V/µs
25 mA
Programmable Gain
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
2.6mA
-
-
RFQ
MCP6472T-E/MNY
Microchip Technology
IC CMOS 2 CIRCUIT 8TDFN
I roto i te taonga40560 pcs
-
Tape & Reel (TR)
MCP6472
5.5 V
2 V
-
-
-
-
1.5 mV
1 pA
2 MHz
-
1.1V/µs
32 mA
CMOS
2
8-TDFN (2x3)
8-WFDFN Exposed Pad
Rail-to-Rail
Surface Mount
-40°C ~ 125°C (TA)
100µA (x2 Channels)
-
-
RFQ
AD603AQ
Analog Devices Inc.
IC VARIABLE GAIN 1 CIRC 8CERDIP
I roto i te taonga13450 pcs
90 MHz
Tube
AD603
12.6 V
9.5 V
-
-
-
-
-
200 nA
-
-
275V/µs
50 mA
Variable Gain
1
8-CERDIP
8-CDIP (0.300", 7.62mm)
-
Through Hole
-40°C ~ 85°C
12.5mA
X-AMP®
-
RFQ
OP07DD
Texas Instruments
IC OPAMP GP 1 CIRCUIT 8SOIC
I roto i te taonga76530 pcs
-
Tube
OP07
36 V
6 V
-
-
-
-
60 µV
2 nA
600 kHz
-
0.3V/µs
-
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
-
-
-
RFQ
EL5160IWZ-T7
Renesas Electronics America Inc
IC OPAMP CFA 1 CIRCUIT 6SOT
I roto i te taonga31114 pcs
200 MHz
Tape & Reel (TR)
EL5160
10 V
5 V
-
-
-
-
1.6 mV
5 µA
-
-
1700V/µs
140 mA
Current Feedback
1
6-SOT
SOT-23-6
-
Surface Mount
-40°C ~ 85°C
750µA
-
-
RFQ
EL2141CS
Renesas Electronics America Inc
IC OPAMP DIFF 1 CIRCUIT 8SOIC
I roto i te taonga7740 pcs
150 MHz
Tube
EL2141
12.6 V
6 V
-
-
-
-
10 mV
6 µA
400 MHz
-
800V/µs
60 mA
Differential
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Differential
Surface Mount
-40°C ~ 85°C
11mA
-
-
RFQ
TS27L4CPT
STMicroelectronics
IC CMOS 4 CIRCUIT 14TSSOP
I roto i te taonga54370 pcs
-
Tape & Reel (TR)
TS27L4
16 V
3 V
-
-
-
-
1.1 mV
1 pA
100 kHz
-
0.04V/µs
45 mA
CMOS
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
-
Surface Mount
0°C ~ 70°C
10µA (x4 Channels)
-
-
RFQ
LT1630IS8
Analog Devices Inc.
IC OPAMP GP 2 CIRCUIT 8SO
I roto i te taonga10330 pcs
-
Tube
LT1630
36 V
2.7 V
-
-
-
-
220 µV
550 nA
30 MHz
-
10V/µs
70 mA
General Purpose
2
8-SO
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
4.1mA (x2 Channels)
LT®
-
RFQ
OPA725AIDBVRG4
Texas Instruments
IC OPAMP GP 1 CIRCUIT SOT23-5
I roto i te taonga11600 pcs
-
Tape & Reel (TR)
OPA725
12 V
4 V
-
-
-
-
1.2 mV
30 pA
20 MHz
-
30V/µs
40 mA
General Purpose
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
4.3mA
-
-
RFQ
MAX44286WAZS+T
Analog Devices Inc./Maxim Integrated
IC CURRENT SENSE 1 CIRCUIT 4WLP
I roto i te taonga16493 pcs
-
Tape & Reel (TR)
MAX44286
5.5 V
1.6 V
-
-
-
-
7 µV
1 nA
200 kHz
-
0.08V/µs
-
Current Sense
1
4-WLP (0.76x0.76)
4-XFBGA, WLBGA
-
Surface Mount
-40°C ~ 125°C
12.5µA
-
-
RFQ
LTC2053HMS8#PBF
Analog Devices Inc.
IC OPAMP ZERO-DRIFT 1 CIRC 8MSOP
I roto i te taonga4852 pcs
-
Tube
LTC2053
11 V
2.7 V
-
-
-
-
5 µV
4 nA
200 kHz
-
0.2V/µs
-
Zero-Drift
1
8-MSOP
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
950µA
-
-
RFQ
LT1226CN8#PBF
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT 8DIP
I roto i te taonga7101 pcs
-
Tube
LT1226
30 V
5 V
-
-
-
-
300 µV
4 µA
1 GHz
-
400V/µs
-
General Purpose
1
8-PDIP
8-DIP (0.300", 7.62mm)
-
Through Hole
0°C ~ 70°C
7mA
-
-
RFQ
AD5750BCPZ-REEL7
Analog Devices Inc.
IC INST AMP 1 CIRCUIT 32LFCSP
I roto i te taonga8174 pcs
-
Tape & Reel (TR)
AD5750
48 V
24 V
-
-
-
-
-
-
-
-
2V/µs
24 mA
Instrumentation
1
32-LFCSP-WQ (5x5)
32-WFQFN Exposed Pad, CSP
-
Surface Mount
-40°C ~ 105°C
5.2mA
-
-
RFQ
AD8619ARUZ
Analog Devices Inc.
IC CMOS 4 CIRCUIT 14TSSOP
I roto i te taonga19400 pcs
-
Tube
AD8619
5 V
1.8 V
-
-
-
-
400 µV
0.2 pA
400 kHz
-
0.1V/µs
80 mA
CMOS
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
38µA
-
-
RFQ
AD8021ARM-REEL7
Analog Devices Inc.
IC VOLTAGE FEEDBACK 1 CIRC 8MSOP
I roto i te taonga11040 pcs
560 MHz
Tape & Reel (TR)
AD8021
24 V
4.5 V
-
-
-
-
400 µV
7.5 µA
-
-
460V/µs
70 mA
Voltage Feedback
1
8-MSOP
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
-
Surface Mount
-40°C ~ 85°C
7.8mA
-
-
RFQ
TS274CN
STMicroelectronics
IC CMOS 4 CIRCUIT 14DIP
I roto i te taonga12370 pcs
-
Tube
TS274
16 V
3 V
-
-
-
-
1.1 mV
1 pA
3.5 MHz
-
5.5V/µs
45 mA
CMOS
4
14-DIP
14-DIP (0.300", 7.62mm)
-
Through Hole
0°C ~ 70°C
1mA
-
-
RFQ
XR8054ATP14X
MaxLinear, Inc.
IC OPAMP VFB 4 CIRCUIT 14TSSOP
I roto i te taonga12760 pcs
90 MHz
Tape & Reel (TR)
-
12.6 V
2.7 V
-
-
-
-
500 µV
1.3 µA
260 MHz
-
190V/µs
100 mA
Voltage Feedback
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
2.6mA (x4 Channels)
-
-
RFQ
TS912AIYDT
STMicroelectronics
IC CMOS 2 CIRCUIT 8SOIC
I roto i te taonga24199 pcs
-
Tape & Reel (TR)
TS912
16 V
2.7 V
-
-
-
-
5 mV
1 pA
1.4 MHz
-
1.3V/µs
75 mA
CMOS
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
230µA (x2 Channels)
Automotive, AEC-Q100
-
RFQ
AD8048AR-REEL
Analog Devices Inc.
IC OPAMP VF GP LDIST 50MA 8SOIC
I roto i te taonga8517 pcs
260 MHz
Bulk
AD8048
12 V
6 V
-
-
-
-
1 mV
1 µA
-
-
1000V/µs
50 mA
Voltage Feedback
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
5.9mA
-
-
RFQ
AD8137YCP-REEL7
Analog Devices Inc.
IC AMP DIFF R-R LP 20MA 8LFCSP
I roto i te taonga13900 pcs
110 MHz
Bulk
AD8137
12 V
2.7 V
-
-
-
-
700 µV
500 nA
-
-
450V/µs
20 mA
Differential
1
8-LFCSP (3x3)
8-WFDFN Exposed Pad, CSP
Differential, Rail-to-Rail
Surface Mount
-40°C ~ 125°C
3.2mA
-
-
RFQ
TLC080IDR
Texas Instruments
IC OPAMP GP 1 CIRCUIT 8SOIC
I roto i te taonga35550 pcs
-
Tape & Reel (TR)
TLC080
16 V
4.5 V
-
-
-
-
390 µV
2 pA
10 MHz
-
19V/µs
57 mA
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
1.9mA
-
-
RFQ
OPA4330AIRGYR
Texas Instruments
IC OPAMP ZERO-DRIFT 4CIRC 14VQFN
I roto i te taonga17262 pcs
-
Tape & Reel (TR)
OPA4330
5.5 V
1.8 V
-
-
-
-
8 µV
200 pA
350 kHz
-
0.16V/µs
5 mA
CMOS, Zero-Drift
4
14-VQFN (3.5x3.5)
14-VFQFN Exposed Pad
Rail-to-Rail
Surface Mount
-40°C ~ 150°C
21µA (x4 Channels)
-
-
RFQ
AD8029ARZ
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT 8SOIC
I roto i te taonga30776 pcs
125 MHz
Tube
AD8029
12 V
2.7 V
-
-
-
-
2 mV
1.7 µA
-
-
63V/µs
170 mA
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
1.4mA
-
-
RFQ
MC33174D
STMicroelectronics
IC OPAMP GP 4 CIRCUIT 14SO
I roto i te taonga13320 pcs
-
Tube
MC33174
44 V
4 V
-
-
-
-
1 mV
100 nA
2.1 MHz
-
2V/µs
27 mA
General Purpose
4
14-SO
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 105°C
220µA
-
-
RFQ