EL2180CS
Intersil
IC OPAMP CFA 1 CIRCUIT 8SOIC
स्टॉक में24370 pcs
250 MHz
Bulk
-
12 V
6 V
-
-
-
-
2.5 mV
1.5 µA
-
-
1200V/µs
100 mA
Current Feedback
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C (TA)
3mA
-
-
-
RFQ
RS358AXK
Runic Technology
IC CMOS 2 CIRCUIT 8SOIC
स्टॉक में233250 pcs
-
Tape & Reel (TR)
-
5.5 V
2.5 V
-
-
-
-
1.5 mV
1 pA
1.1 MHz
-
0.5V/µs
54 mA
CMOS
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
60µA (x2 Channels)
-
-
-
RFQ
TLV2721IDBVRG4
Texas Instruments
IC OPAMP GP 510KHZ RRO SOT23-5
स्टॉक में75760 pcs
-
-
-
-
-
1 (Unlimited)
Lead free / RoHS Compliant
TLV2721
Tape & Reel (TR)
500µV
1pA
510kHz
2.7 V ~ 10 V, ±1.35 V ~ 5 V
0.25 V/µs
50mA
General Purpose
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
110µA
LinCMOS™
General Purpose Amplifier 1 Circuit Rail-to-Rail SOT-23-5
31 Weeks
RFQ
MAX4108ESA+T
Analog Devices Inc./Maxim Integrated
IC OPAMP GP 1 CIRCUIT 8SOIC
स्टॉक में5488 pcs
400 MHz
Bulk
-
12 V
12 V
-
-
-
-
1 mV
12 µA
-
-
1200V/µs
100 mA
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
20mA
-
-
-
RFQ
LMH6672MA
Texas Instruments
IC OPAMP VFB 90MHZ 8SOIC
स्टॉक में13030 pcs
90MHz
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMH6672
Tube
100µV
8µA
-
5 V ~ 12 V, ±2.5 V ~ 6 V
135 V/µs
525mA
Voltage Feedback
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 150°C
7.2mA
-
Voltage Feedback Amplifier 2 Circuit 8-SOIC
-
RFQ
LMC662AIM
Texas Instruments
IC CMOS 2 CIRCUIT 8SOIC
स्टॉक में16922 pcs
-
Bulk
-
15.5 V
4.75 V
-
-
-
-
1 mV
0.002 pA
1.4 MHz
-
1.1V/µs
40 mA
CMOS
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Push-Pull, Rail-to-Rail
Surface Mount
-40°C ~ 85°C (TJ)
750µA (x2 Channels)
LMC®
-
-
RFQ
LM358ADR
UMW
SOP-8 OPAMP ROHS
स्टॉक में306760 pcs
-
Tape & Reel (TR)
-
36 V
-
-
-
-
-
2 mV
45 nA
-
-
-
40 mA
General Purpose
2
8-SOP
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-25°C ~ 85°C
1mA
-
-
-
RFQ
AD741CN
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT 8DIP
स्टॉक में50390 pcs
1 MHz
Bulk
-
44 V
10 V
-
-
-
-
1 mV
80 nA
-
-
0.5V/µs
25 mA
General Purpose
1
8-PDIP
8-DIP (0.300", 7.62mm)
-
Through Hole
0°C ~ 70°C
1.7mA
-
-
-
RFQ
AD8572ARUZ-REEL
Analog Devices Inc.
IC OPAMP ZERO-DRIFT 2CIRC 8TSSOP
स्टॉक में11280 pcs
-
Tape & Reel (TR)
AD8572
5 V
2.7 V
-
-
-
-
1 µV
160 pA
1.5 MHz
-
0.4V/µs
30 mA
Zero-Drift
2
8-TSSOP
8-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
850µA (x2 Channels)
-
-
-
RFQ
LMT358N
onsemi
IC OPAMP GP 2 CIRCUIT 8DIP
स्टॉक में78150 pcs
-
Bulk
-
32 V
3 V
-
-
-
-
2 mV
45 nA
-
-
-
40 mA
General Purpose
2
8-PDIP
8-DIP (0.300", 7.62mm)
-
Through Hole
0°C ~ 70°C (TA)
1.5mA
-
-
-
RFQ
UA748CD
Texas Instruments
IC OPAMP GP 1 CIRCUIT 8SOIC
स्टॉक में166740 pcs
-
Tube
-
40 V
10 V
-
-
-
-
2 mV
70 nA
1 MHz
-
0.5V/µs
30 mA
General Purpose
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
1.8mA
-
-
-
RFQ
MAX4212EUK-T
Analog Devices Inc./Maxim Integrated
VIDEO AMPLIFIER, 1 CHANNEL(S), 1
स्टॉक में10551 pcs
300 MHz
Bulk
-
11 V
3.15 V
-
-
-
-
4 mV
5.4 µA
-
-
600V/µs
120 mA
Voltage Feedback
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
5.5mA
-
-
-
RFQ
LMH6626MA
Texas Instruments
IC OPAMP VFB 1.3GHZ 8SOIC
स्टॉक में5120 pcs
85MHz
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMH6626
Tube
100µV
13µA
1.3GHz
5 V ~ 12 V, ±2.5 V ~ 6 V
360 V/µs
80mA
Voltage Feedback
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
12mA
-
Voltage Feedback Amplifier 2 Circuit 8-SOIC
-
RFQ
3583JM
Texas Instruments
IC OPAMP GP 1 CIRCUIT TO3-8
स्टॉक में6410 pcs
-
Tube
3583
300 V
100 V
-
-
-
-
3 mV
20 pA
5 MHz
-
30V/µs
75 mA
General Purpose
1
TO-3-8
TO-3-8
-
Through Hole
0°C ~ 70°C
8.5mA
-
-
-
RFQ
TLC27M4CNS
Texas Instruments
IC OPAMP GP 4 CIRCUIT 14SO
स्टॉक में59310 pcs
-
Tube
TLC27M4
16 V
3 V
-
-
-
-
1.1 mV
0.7 pA
525 kHz
-
0.62V/µs
30 mA
General Purpose
4
14-SO
14-SOIC (0.209", 5.30mm Width)
-
Surface Mount
0°C ~ 70°C
570µA (x4 Channels)
LinCMOS™
-
-
RFQ
AD8668ARZ-REEL
Analog Devices Inc.
IC OPAMP GP 4 CIRCUIT 14SOIC
स्टॉक में12067 pcs
-
Tape & Reel (TR)
AD8668
16 V
5 V
-
-
-
-
600 µV
0.2 pA
4 MHz
-
3.5V/µs
140 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
1.15mA (x4 Channels)
-
-
-
RFQ
CA3140EZ
Intersil
OPERATIONAL AMPLIFIER, 1 FUNC, 1
स्टॉक में13990 pcs
-
Bulk
-
36 V
4 V
-
-
-
-
5 mV
10 pA
4.5 MHz
-
9V/µs
40 mA
General Purpose
1
8-PDIP
8-DIP (0.300", 7.62mm)
-
Through Hole
-55°C ~ 125°C
4mA
-
-
-
RFQ
LMC660CN
Texas Instruments
IC CMOS 4 CIRCUIT 14DIP
स्टॉक में11980 pcs
-
Tube
-
15.5 V
4.75 V
-
-
-
-
1 mV
0.002 pA
1.4 MHz
-
1.1V/µs
40 mA
CMOS
4
14-PDIP
14-DIP (0.300", 7.62mm)
Push-Pull, Rail-to-Rail
Through Hole
0°C ~ 70°C
1.5mA (x4 Channels)
LMC®
-
-
RFQ
AD210BN
Analog Devices Inc.
IC OPAMP ISOLATION 1 CIRC 12DIP
स्टॉक में171 pcs
20 kHz
Tube
AD210
15.75 V
14.25 V
-
-
-
-
5 mV
30 pA
-
-
1V/µs
5 mA
Isolation
1
12-PDIP
38-DIP (0.800", 20.32mm), 12 Leads
-
Through Hole
-25°C ~ 85°C
50mA
-
-
-
RFQ
NJM8080V-TE1
Nisshinbo Micro Devices Inc.
IC AUDIO 2 CIRCUIT 8SSOP
स्टॉक में176870 pcs
-
Tape & Reel (TR)
NJM8080
36 V
4 V
-
-
-
-
500 µV
50 nA
10 MHz
-
4V/µs
-
Audio
2
8-SSOP
8-LSSOP (0.173", 4.40mm Width)
-
Surface Mount
-40°C ~ 125°C
4.5mA
-
-
-
RFQ
ICL7611BCPA
Intersil
IC OPAMP GP 1 CIRCUIT 8DIP
स्टॉक में25842 pcs
-
Tube
-
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)
-
Through Hole
0°C ~ 70°C
1mA
-
-
-
RFQ
OP260GP
Analog Devices Inc.
IC OPAMP CFA 2 CIRCUIT 8CERDIP
स्टॉक में12830 pcs
90 MHz
Bulk
-
36 V
18 V
-
-
-
-
3 mV
5 µA
-
-
550V/µs
-
Current Feedback
2
8-CERDIP
8-CDIP (0.300", 7.62mm)
-
Through Hole
-40°C ~ 85°C
9mA
-
-
-
RFQ
ISL55211IRTZ
Renesas Electronics America Inc
IC OPAMP DIFF 1 CIRCUIT 16TQFN
स्टॉक में5950 pcs
-
Tube
ISL55211
4.2 V
3 V
-
-
-
-
100 µV
50 µA
-
-
5600V/µs
45 mA
Differential
1
16-TQFN (3x3)
16-WFQFN Exposed Pad
Differential
Surface Mount
-40°C ~ 85°C
35mA
-
-
-
RFQ
LT1810IS8
Linear Technology
LT1810 - 1 to 60 MHz, Stratum 3
स्टॉक में5060 pcs
320 MHz
Bulk
-
12.6 V
2.5 V
-
-
-
-
800 µV
2 µA
180 MHz
-
350V/µs
85 mA
General Purpose
2
8-SO
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
15mA (x2 Channels)
LT®
-
-
RFQ
AD707TQ
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT 8CERDIP
स्टॉक में1162 pcs
-
Bulk
-
22 V
22 V
-
-
-
-
-
-
900 kHz
-
0.3V/µs
10 mA
General Purpose
1
8-CERDIP
8-CDIP (0.300", 7.62mm)
-
Through Hole
-55°C ~ 125°C
-
-
-
-
RFQ
ADA4177-4ARZ-RL
Analog Devices Inc.
IC OPAMP GP 4 CIRCUIT 14SOIC
स्टॉक में5965 pcs
6 MHz
Tape & Reel (TR)
ADA4177
36 V
5 V
-
-
-
-
2 µV
300 pA
3.5 MHz
-
1.5V/µs
25 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
500µA (x4 Channels)
-
-
-
RFQ
AD8513AR-REEL
Analog Devices Inc.
IC OPAMP JFET 4 CIRCUIT 14SOIC
स्टॉक में5380 pcs
-
Tape & Reel (TR)
AD8513
30 V
10 V
-
-
-
-
100 µV
25 pA
8 MHz
-
20V/µs
70 mA
J-FET
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
2.2mA (x4 Channels)
-
-
-
RFQ
LM324D
onsemi
IC OPAMP GP 4 CIRCUIT 14SOIC
स्टॉक में5350 pcs
-
Tube
-
30 V
3 V
-
-
-
-
3 mV
20 nA
1.2 MHz
-
0.5V/µs
40 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C (TA)
1.4mA (x4 Channels)
Automotive, AEC-Q100
-
-
RFQ
MC33172D
onsemi
IC OPAMP GP 2 CIRCUIT 8SOIC
स्टॉक में7850 pcs
-
Tube
-
44 V
4 V
-
-
-
-
1 mV
20 nA
2.1 MHz
-
2V/µs
27 mA
General Purpose
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 105°C
220µA
-
-
-
RFQ
LMC6036IMT
Texas Instruments
IC OPAMP GP 1.4MHZ RRO 14TSSOP
स्टॉक में9790 pcs
-
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMC6036
Tube
500µV
0.02pA
1.4MHz
2 V ~ 15.5 V, ±1 V ~ 7.75 V
1.5 V/µs
8mA
General Purpose
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
1.3mA
-
General Purpose Amplifier 4 Circuit Rail-to-Rail 14-TSSOP
-
RFQ
LF356BMX
Texas Instruments
IC OPAMP JFET 1 CIRCUIT 8SOIC
स्टॉक में23391 pcs
-
Bulk
-
40 V
30 V
-
-
-
-
3 mV
30 pA
5 MHz
-
12V/µs
-
J-FET
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C (TA)
5mA
-
-
-
RFQ
AD8608ARZ-REEL7
Analog Devices Inc.
IC CMOS 4 CIRCUIT 14SOIC
स्टॉक में10563 pcs
-
Tape & Reel (TR)
AD8608
5.5 V
2.7 V
-
-
-
-
80 µV
1 pA
10 MHz
-
5V/µs
80 mA
CMOS
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
1mA (x4 Channels)
DigiTrim®
-
-
RFQ
TLV2262AIDRG4
Texas Instruments
IC OPAMP GP 710KHZ RRO 8SOIC
स्टॉक में36016 pcs
-
-
-
-
-
1 (Unlimited)
Lead free / RoHS Compliant
TLV2262A
Tape & Reel (TR)
300µV
1pA
710kHz
2.7 V ~ 8 V, ±1.35 V ~ 4 V
0.55 V/µs
50mA
General Purpose
2
8-SOIC
8-SOIC (0.154", 3.90mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
400µA
LinCMOS™
General Purpose Amplifier 2 Circuit Rail-to-Rail 8-SOIC
6 Weeks
RFQ
OP4177AR
Analog Devices Inc.
IC OPAMP GP 4 CIRCUIT 14SOIC
स्टॉक में11300 pcs
-
Tube
OP4177
30 V
5 V
-
-
-
-
15 µV
500 pA
1.3 MHz
-
0.7V/µs
10 mA
General Purpose
4
14-SOIC
14-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 125°C
400µA (x4 Channels)
-
-
-
RFQ
LT6003HDC#TRPBF
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT 4DFN
स्टॉक में18570 pcs
-
Tape & Reel (TR)
LT6003
16 V
1.6 V
-
-
-
-
300 µV
40 pA
3 kHz
-
0.0013V/µs
9 mA
General Purpose
1
4-DFN (2x2)
4-WFSFN Exposed Pad
Rail-to-Rail
Surface Mount
-40°C ~ 125°C
1.25µA
-
-
-
RFQ
OPA569AIDWPRG4
Texas Instruments
IC OPAMP GP 1.2MHZ RRO 20SOPWR
स्टॉक में9033 pcs
-
-
-
-
-
2 (1 Year)
Lead free / RoHS Compliant
OPA569
Tape & Reel (TR)
500µV
1pA
1.2MHz
2.7 V ~ 5.5 V, ±1.35 V ~ 2.75 V
1.2 V/µs
2.4A
General Purpose
1
20-SO PowerPad
20-SOIC (0.295", 7.50mm Width) Exposed Pad
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
9mA
-
General Purpose Amplifier 1 Circuit Rail-to-Rail 20-SO PowerPad
-
RFQ
OP220BIGZ
Analog Devices Inc.
IC POWER 2 CIRCUIT 8CERDIP
स्टॉक में21017 pcs
-
Bulk
-
30 V
5 V
-
-
-
-
-
-
-
-
-
-
Power
2
8-CERDIP
8-CDIP (0.300", 7.62mm)
-
Through Hole
-
-
-
-
-
RFQ
FHP3430IMTC14X
Fairchild Semiconductor
IC OPAMP VFB 4 CIRCUIT 14TSSOP
स्टॉक में38480 pcs
170 MHz
Bulk
-
12 V
2.7 V
-
-
-
-
1 mV
1.8 µA
60 MHz
-
110V/µs
100 mA
Voltage Feedback
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
2.5mA (x4 Channels)
-
-
-
RFQ
OPA2541AM
Texas Instruments
IC OPAMP GP 2 CIRCUIT TO3-8
स्टॉक में121 pcs
-
Tube
OPA2541
70 V
20 V
-
-
-
-
1 mV
15 pA
1.6 MHz
-
8V/µs
7 A
General Purpose
2
TO-3-8
TO-3-8
-
Through Hole
-40°C ~ 85°C
40mA (x2 Channels)
-
-
-
RFQ
LMH6704MA
Texas Instruments
IC BUFFER 1 CIRCUIT 8SOIC
स्टॉक में16070 pcs
650 MHz
Bulk
-
12 V
8 V
-
-
-
-
2 mV
5 µA
200 MHz
-
3000V/µs
90 mA
Buffer
1
8-SOIC
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 85°C
11.5mA
LMH®
-
-
RFQ
LMC8101TPX
Texas Instruments
IC CMOS 1 CIRCUIT 8DSBGA
स्टॉक में111730 pcs
-
Bulk
-
10 V
2.7 V
-
-
-
-
700 µV
1 pA
1.3 MHz
-
1.2V/µs
90 mA
CMOS
1
8-DSBGA (1.43x1.41)
8-UFBGA, DSBGA
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
1.1mA
LMC®
-
-
RFQ
OPA388QDBVRQ1
Texas Instruments
IC OPAMP ZER-DRIFT 1CIRC SOT23-5
स्टॉक में30340 pcs
-
Tape & Reel (TR)
OPA388
5.5 V
2.5 V
-
-
-
-
0.25 µV
30 pA
10 MHz
-
5V/µs
60 mA
Zero-Drift
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 125°C (TA)
1.9mA
Automotive, AEC-Q100, Zero-Drift
-
-
RFQ
LT1013DS8
Analog Devices Inc.
LT1013 - DUAL PRECISION OP AMP
स्टॉक में6830 pcs
-
Bulk
-
44 V
4 V
-
-
-
-
60 µV
15 nA
1 MHz
-
0.4V/µs
20 mA
General Purpose
2
8-SO
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
0°C ~ 70°C
350µA (x2 Channels)
LT®
-
-
RFQ
AD504MH
Analog Devices Inc.
IC OPAMP GP 1 CIRCUIT TO99
स्टॉक में699 pcs
300 kHz
Bulk
-
36 V
10 V
-
-
-
-
200 µV
80 nA
-
-
0.12V/µs
25 mA
General Purpose
1
TO-99
TO-99-8 Metal Can
-
Through Hole
0°C ~ 70°C
1.5mA
-
-
-
RFQ
INA253A1IPWR
Texas Instruments
IC CURR SENSE 1 CIRCUIT 20TSSOP
स्टॉक में20882 pcs
350 kHz
Tape & Reel (TR)
INA253
5.5 V
2.7 V
-
-
-
-
-
90 µA
-
-
2.4V/µs
-
Current Sense
1
20-TSSOP
20-TSSOP (0.173", 4.40mm Width)
-
Surface Mount
-40°C ~ 125°C (TA)
1.8mA
Zero-Drift
-
-
RFQ
INA186A3QDBVRQ1
Texas Instruments
IC CURR SENSE 1 CIRCUIT SOT23-5
स्टॉक में53120 pcs
35 kHz
Tape & Reel (TR)
INA186
5.5 V
1.7 V
-
-
-
-
3 µV
500 pA
-
-
0.3V/µs
-
Current Sense
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 125°C (TA)
48µA
Automotive, AEC-Q100
-
-
RFQ
LMV824MTX
Texas Instruments
IC OPAMP GP 4 CIRCUIT 14TSSOP
स्टॉक में9220 pcs
-
Bulk
-
5.5 V
2.5 V
-
-
-
-
1 mV
40 nA
5.6 MHz
-
2V/µs
45 mA
General Purpose
4
14-TSSOP
14-TSSOP (0.173", 4.40mm Width)
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
1mA (x4 Channels)
Automotive, AEC-Q100, LMV®
-
-
RFQ
LMV710M5X
Texas Instruments
IC OPAMP GP 5MHZ RRO SOT23-5
स्टॉक में7720 pcs
-
-
-
-
-
1 (Unlimited)
Contains lead / RoHS non-compliant
LMV710
Tape & Reel (TR)
400µV
4pA
5MHz
2.7 V ~ 5.5 V
5 V/µs
40mA
General Purpose
1
SOT-23-5
SC-74A, SOT-753
Rail-to-Rail
Surface Mount
-40°C ~ 85°C
1.17mA
-
General Purpose Amplifier 1 Circuit Rail-to-Rail SOT-23-5
-
RFQ
LB4310AAPGB
Diodes Incorporated
AMP
स्टॉक में5700 pcs
-
Bulk
-
36 V
3 V
-
-
-
-
500 µV
20 nA
1 MHz
-
0.5V/µs
40 mA
General Purpose
2
8-SOP
8-SOIC (0.154", 3.90mm Width)
-
Surface Mount
-40°C ~ 105°C (TA)
200µA
-
-
-
RFQ
OP77BIFJ
Analog Devices Inc.
OPERATIONAL AMPLIFIER
स्टॉक में8878 pcs
-
Bulk
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
*
-
-
RFQ