LT1763CS8-2.5
Linear Technology
IC REG LINEAR 500MA 8SOIC
Na skladě4000 pcs
-
Positive
Enable
2.5V
-
1
500mA
0.45V @ 500mA
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
-
Bulk
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
8-SOIC (0.154", 3.90mm Width)
8-SO
-
RFQ
TPS79601DRBR
Texas Instruments
IC REG LINEAR POS ADJ 1A 8SON
Na skladě28424 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
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
8-VDFN Exposed Pad
8-SON (3x3)
-
RFQ
RT9013-30GU5
Richtek USA Inc.
IC REG LINEAR 3V 500MA SC70-5
Na skladě12720 pcs
50 µA
Positive
Enable
3V
-
1
500mA
0.4V @ 500mA
50dB (10kHz)
Over Current, Over Temperature
RT9013
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
5-TSSOP, SC-70-5, SOT-353
SC-70-5
-
RFQ
SP6265BEK1-L/TR
MaxLinear, Inc.
IC REG LINEAR 1.8V/2.8V TSOT23-6
Na skladě4140 pcs
160 µA
Positive
Enable
1.8V, 2.8V
-
2
150mA, 150mA
0.35V @ 150mA, 0.3V @ 150mA
55dB ~ 48dB (100Hz ~ 10kHz)
Over Current, Over Temperature
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SOT-23-6 Thin, TSOT-23-6
6-TSOT
-
RFQ
MAX883EPA+
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 200MA 8DIP
Na skladě7874 pcs
15 µA
Positive
Enable, Low Battery Detection
1.25V (5V)
11V
1
200mA
0.44V @ 200mA
-
Over Current, Over Temperature, Reverse Polarity
MAX883
Tube
-
-40°C ~ 85°C
Through Hole
11.5V
Adjustable (Fixed)
8-DIP (0.300", 7.62mm)
8-PDIP
25 µA
RFQ
TLE7272D
Infineon Technologies
IC REG LINEAR 5V 300MA TO252-5
Na skladě11370 pcs
30 µA
Positive
Inhibit, Reset
5V
-
1
300mA
0.5V @ 200mA
60dB (100Hz)
Over Current, Over Temperature, Short Circuit
TLE7272
Tape & Reel (TR)
-
-40°C ~ 150°C
Surface Mount
42V
Fixed
TO-252-5, DPak (4 Leads + Tab), TO-252AD
PG-TO252-5
40 µA
RFQ
AS1358-BTTT-30
ams OSRAM
IC REG LINEAR 3V 150MA TSOT23-5
Na skladě17340 pcs
90 µA
Positive
Enable
3V
-
1
150mA
0.95V @ 150mA
92dB ~ 62dB (1kHz ~ 100kHz)
Over Temperature
-
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
LD1086D2MTR
STMicroelectronics
IC REG LINEAR POS ADJ 1.5A D2PAK
Na skladě48527 pcs
10 mA
Positive
-
1.25V
28.5V
1
1.5A
1.5V @ 1.5A
88dB (120Hz)
Over Current, Over Temperature
LD1086
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
30V
Adjustable
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
D2PAK
-
RFQ
S-812C30AUA-C2KT2G
ABLIC Inc.
IC REG LINEAR 3V 50MA SOT89-3
Na skladě66770 pcs
500 nA
Positive
-
3V
-
1
50mA
0.41V @ 10mA
-
-
S-812
Tape & Reel (TR)
S-812C
-40°C ~ 85°C (TA)
Surface Mount
16V
Fixed
TO-243AA
SOT-89-3
1.8 µA
RFQ
MP20051DN-LF-Z
Monolithic Power Systems Inc.
IC REG LINEAR POS ADJ 1A 8SOICE
Na skladě74090 pcs
600 µA
Positive
Enable
0.8V
5V
1
1A
0.28V @ 1A
65dB ~ 33dB (100Hz ~ 1MHz)
Over Current, Over Temperature, Under Voltage Lockout (UVLO)
MP20051
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
5.5V
Adjustable
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SOICE
-
RFQ
RP173N501B-TR-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 5V 150MA SOT23-5
Na skladě208380 pcs
3.7 µA
Positive
Enable
5V
-
1
150mA
0.76V @ 150mA
-
Over Current, Reverse Current
RP173
Tape & Reel (TR)
RP173x
-40°C ~ 85°C (TA)
Surface Mount
11V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
REG103GA-3.3
Texas Instruments
IC REG LIN 3.3V 500MA SOT223-6
Na skladě10176 pcs
0.7 mA
Positive
Enable
3.3V
-
1
500mA
0.28V @ 500mA
65dB (120Hz)
Over Current, Over Temperature
REG103
Tube
-
-40°C ~ 85°C
Surface Mount
15V
Fixed
SOT-223-6
SOT-223-6
1.3 mA
RFQ
AP130-28YRL-13
Diodes Incorporated
IC REG LIN 2.8V 300MA SOT89R-3
Na skladě95070 pcs
100 µA
Positive
-
2.8V
-
1
300mA
0.5V @ 300mA
58dB (100Hz)
Over Current, Over Temperature, Short Circuit
-
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
TO-243AA
SOT-89R-3
-
RFQ
LP38693MP-3.3
Texas Instruments
IC REG LIN 3.3V 500MA SOT223-5
Na skladě35069 pcs
55 µA
Positive
Enable
3.3V
-
1
500mA
0.55V @ 500mA
55dB (120Hz)
Over Temperature
LP38693
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
10V
Fixed
TO-261-5, TO-261AB
SOT-223-5
100 µA
RFQ
MIC2920A-5.0BT
Microchip Technology
IC REG LINEAR 5V 400MA TO220-3
Na skladě9210 pcs
300 µA
Positive
-
5V
-
1
400mA
0.75V @ 400mA
-
Load Dump, Over Current, Reverse Polarity
MIC2920A-5.0
Bulk
-
-40°C ~ 125°C
Through Hole
26V
Fixed
TO-220-3
TO-220-3
12 mA
RFQ
ADP7182ACPZ-R7
Analog Devices Inc.
IC REG LIN NEG ADJ 200MA 8LFCSP
Na skladě13446 pcs
53 µA
Negative
Enable
-1.22V
-27.64V
1
200mA
0.36V @ 200mA
66dB ~ 45dB (10kHz ~ 1MHz)
Over Current, Over Temperature
ADP7182
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
-28V
Adjustable
8-WFDFN Exposed Pad, CSP
8-LFCSP-WD (3x3)
850 µA
RFQ
MIC5301-2.8YD5
Micrel Inc.
IC REG LINEAR SGL 150 MICRO AMP
Na skladě107260 pcs
120 µA
Positive
Enable
2.8V
-
1
150mA
0.1V @ 150mA
75dB ~ 50dB (1kHz ~ 20kHz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
-
RFQ
LP5912Q1.1DRVTQ1
Texas Instruments
IC REG LINEAR 1.1V 500MA 6WSON
Na skladě38778 pcs
55 µA
Positive
Enable, Power Good, Soft Start
1.1V
-
1
500mA
-
80dB ~ 40dB (100Hz ~ 100kHz)
Over Temperature, Reverse Polarity, Short Circuit
LP5912
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 125°C (TJ)
Surface Mount
6.5V
Fixed
6-WDFN Exposed Pad
6-WSON (2x2)
600 µA
RFQ
LM337KVURG3
Texas Instruments
IC REG LIN NEG ADJ 1.5A TO252-3
Na skladě82030 pcs
-
Negative
-
-1.2V
-37V
1
1.5A
-
77dB (120Hz)
Over Temperature, Short Circuit
LM337
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
-40V
Adjustable
TO-252-3, DPak (2 Leads + Tab), SC-63
TO-252-3
-
RFQ
LT3015EDD#PBF
Analog Devices Inc.
IC REG LIN NEG ADJ 1.5A 8DFN
Na skladě6455 pcs
2.4 mA
Negative
Enable
-1.22V
-29.5V
1
1.5A
0.5V @ 1.5A
65dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3015
Tube
-
-40°C ~ 125°C
Surface Mount
-30V
Adjustable
8-WFDFN Exposed Pad
8-DFN (3x3)
70 mA
RFQ
TL780-05CKTER
Texas Instruments
IC VOLT REG POS 5V 1.5A DPAK-2
Na skladě8850 pcs
-
Positive
-
5V
-
1
1.5A
2V @ 1A
85dB (120Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
TL780
Digi-Reel®
-
0°C ~ 125°C
Surface Mount
25V
Fixed
TO-252-4, DPak (3 Leads + Tab)
3-PowerFLEX™
-
RFQ
R1190H090D-T1-FE
Nisshinbo Micro Devices Inc.
IC REG LINEAR 9V 1A SOT89-5
Na skladě50440 pcs
220 µA
Positive
Enable
9V
-
1
1A
1.3V @ 1A
60dB (1kHz)
Over Current, Over Temperature, Short Circuit
R1190
Tape & Reel (TR)
R1190x
-40°C ~ 85°C
Surface Mount
16V
Fixed
SOT-89-5/6
SOT-89-5
-
RFQ
MIC5265-2.5YD5
Microchip Technology
IC REG LIN 2.5V 150MA TSOT23-5
Na skladě7190 pcs
2 µA
Positive
Enable
2.5V
-
1
150mA
0.5V @ 150mA
64dB ~ 62dB (1kHz ~ 100Hz)
Over Temperature, Under Voltage Lockout (UVLO)
MIC5265
Bulk
-
-40°C ~ 125°C
Surface Mount
5.5V
Fixed
SOT-23-5 Thin, TSOT-23-5
TSOT-23-5
150 µA
RFQ
TLE4251GATMA1
Infineon Technologies
IC REG LIN POS ADJ 400MA TO263-5
Na skladě13092 pcs
300 µA
Positive
Enable
Tracking
-
1
400mA
0.52V @ 300mA
60dB (100Hz)
Over Current, Over Temperature, Reverse Polarity, Short Circuit
TLE4251
Tape & Reel (TR)
Automotive, AEC-Q100, OPTIREG™
-40°C ~ 150°C
Surface Mount
40V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
PG-TO263-5-1
20 mA
RFQ
FAN2513S25X
Fairchild Semiconductor
IC REG LINEAR 2.5V 150MA SOT23-5
Na skladě247840 pcs
50 µA
Positive
Enable
2.5V
-
1
150mA
0.18V @ 150mA
43dB (120Hz)
Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
AP7217A-33SPG-13
Diodes Incorporated
IC REG LINEAR 3.3V 600MA 8SO
Na skladě246440 pcs
80 µA
Positive
Enable
3.3V
-
1
600mA
0.9V @ 600mA
55dB (1kHz)
Over Current
AP7217
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
8-SOIC (0.154', 3.90mm Width) Exposed Pad
8-SO-EP
-
RFQ
FAN2558MP15X
Fairchild Semiconductor
IC REG LINEAR 1.5V 180MA 6MLP
Na skladě73170 pcs
150 µA
Positive
Enable, Power Good
1.5V
-
1
180mA
-
50dB (100kHz)
Over Current, Over Temperature
-
Bulk
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
6-VDFN Exposed Pad
6-DFN (2x2)
-
RFQ
KA7824E
onsemi
IC REG LINEAR 24V 1A TO220-3
Na skladě5630 pcs
8 mA
Positive
-
24V
-
1
1A
2V @ 1A (Typ)
67dB (120Hz)
Over Temperature, Short Circuit
KA7824
Bulk
-
-40°C ~ 125°C
Through Hole
40V
Fixed
TO-220-3
TO-220-3
-
RFQ
RT9011-KNGQWC
Richtek USA Inc.
IC REG LINEAR 2.6V/2.85V 6WDFN
Na skladě17920 pcs
80 µA
Positive
Enable
2.6V, 2.85V
-
2
300mA, 300mA
0.33V @ 300mA, 0.33V @ 300mA
70dB ~ 38dB (100Hz ~ 300kHz)
Over Current, Over Temperature, Short Circuit
RT9011
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
5.5V
Fixed
6-WFDFN Exposed Pad
6-WDFN (1.6x1.6)
-
RFQ
L4931ABDT33
STMicroelectronics
IC REG LINEAR 3.3V 250MA DPAK
Na skladě3710 pcs
1 mA
Positive
-
3.3V
-
1
250mA
0.8V @ 250mA
73dB ~ 55dB (120Hz ~ 10kHz)
Over Current, Over Temperature
L4931
Tube
-
-40°C ~ 125°C
Surface Mount
20V
Fixed
TO-252-3, DPak (2 Leads + Tab), SC-63
DPAK
6 mA
RFQ
L7809CV-DG
STMicroelectronics
IC REG LINEAR 9V 1.5A TO220
Na skladě139520 pcs
8 mA
Positive
-
9V
-
1
1.5A
2V @ 1A (Typ)
55dB (120Hz)
Over Temperature, Short Circuit
L7809
Tube
-
0°C ~ 125°C
Through Hole
35V
Fixed
TO-220-3
TO-220
-
RFQ
AP130-35RG-7
Diodes Incorporated
IC REG LINEAR 3.5V 300MA SC59R
Na skladě169610 pcs
100 µA
Positive
-
3.5V
-
1
300mA
0.5V @ 300mA
58dB (100Hz)
Over Current, Over Temperature, Short Circuit
-
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Fixed
TO-236-3, SC-59, SOT-23-3
SC-59R
-
RFQ
MIC39300-1.8WU
Microchip Technology
IC REG LINEAR 1.8V 3A TO263-3
Na skladě8849 pcs
-
Positive
-
1.8V
-
1
3A
0.55V @ 3A
-
Over Current, Over Temperature, Reverse Polarity
MIC39300
Tube
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
TO-263-4, D²Pak (3 Leads + Tab), TO-263AA
TO-263-3
-
RFQ
KA78RL00D
Fairchild Semiconductor
IC REG LIN POS ADJ 100MA 8SOIC
Na skladě14220 pcs
140 µA
Positive
Enable
1.26V
29.4V
1
100mA
0.6V @ 100mA
-
Over Temperature, Short Circuit
-
Tube
-
-40°C ~ 125°C
Surface Mount
30V
Adjustable
8-SOIC (0.154", 3.90mm Width)
8-SOIC
7 mA
RFQ
FAN2512S28X
Fairchild Semiconductor
IC REG LINEAR 2.8V 150MA SOT23-5
Na skladě140290 pcs
50 µA
Positive
Enable
2.8V
-
1
150mA
0.18V @ 150mA
43dB (120Hz)
Over Temperature
-
Bulk
-
-40°C ~ 125°C
Surface Mount
6.5V
Fixed
SC-74A, SOT-753
SOT-23-5
-
RFQ
MAX8869EUE50+T
Analog Devices Inc./Maxim Integrated
IC REG LIN POS ADJ 1A 16TSSOP
Na skladě10874 pcs
2 mA
Positive
Enable, Reset, Soft Start
0.8V (5V)
5V
1
1A
0.35V @ 1A
54dB (100kHz)
Over Current, Over Temperature, Short Circuit
MAX8869
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
5.5V
Adjustable (Fixed)
16-TSSOP (0.173", 4.40mm Width) Exposed Pad
16-TSSOP-EP
2.5 mA
RFQ
NCV47721PAAJR2G
onsemi
IC REG LIN POS ADJ 200MA 14TSSOP
Na skladě54450 pcs
1 mA
Positive
Enable, Error Flag
3.3V
20V
1
200mA
0.5V @ 200mA
80dB (100Hz)
Over Current, Over Temperature, Reverse Polarity
NCV47721
Tape & Reel (TR)
Automotive, AEC-Q100
-40°C ~ 150°C (TJ)
Surface Mount
40V
Adjustable
14-TSSOP (0.173", 4.40mm Width) Exposed Pad
14-TSSOP-EP
15 mA
RFQ
AP2127N-3.0TRG1
Diodes Incorporated
IC REG LINEAR 3V 300MA SOT23
Na skladě590250 pcs
90 µA
Positive
-
3V
-
1
300mA
0.3V @ 300mA
68dB ~ 54dB (100Hz ~ 10kHz)
Over Current, Over Temperature
AP2127
Tape & Reel (TR)
-
-40°C ~ 85°C
Surface Mount
6V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3
-
RFQ
LT3061EDCB#TRMPBF
Analog Devices Inc.
IC REG LINEAR POS ADJ 100MA 8DFN
Na skladě7603 pcs
90 µA
Positive
Enable, Soft Start
0.6V
19V
1
100mA
0.43V @ 100mA
85dB (120Hz)
Over Current, Over Temperature, Reverse Polarity
LT3061
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
45V
Adjustable
8-WFDFN Exposed Pad
8-DFN (2x3)
4 mA
RFQ
NCP566ST25T3G
onsemi
IC REG LINEAR 2.5V 1.5A SOT223
Na skladě43410 pcs
3 mA
Positive
-
2.5V
-
1
1.5A
1.3V @ 1.5A
85dB ~ 75db (120Hz ~ 1kHz)
Over Current, Over Temperature
NCP566
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
9V
Fixed
TO-261-4, TO-261AA
SOT-223 (TO-261)
-
RFQ
LP5910-1.1BYKAR
Texas Instruments
IC REG LINEAR 1.1V 300MA 4DSBGA
Na skladě167520 pcs
25 µA
Positive
Enable
1.1V
-
1
300mA
-
80dB ~ 25dB (100Hz ~ 2MHz)
Over Temperature, Reverse Polarity, Short Circuit
LP5910
Tape & Reel (TR)
-
-40°C ~ 125°C (TJ)
Surface Mount
3.3V
Fixed
4-XFBGA, DSBGA
4-DSBGA (0.71x0.71)
350 µA
RFQ
MC7808CD2TR4G
onsemi
IC REG LINEAR 8V 1A D2PAK
Na skladě11230 pcs
8 mA
Positive
-
8V
-
1
1A
2V @ 1A (Typ)
62dB (120Hz)
Over Temperature, Short Circuit
MC7808
Tape & Reel (TR)
-
0°C ~ 125°C
Surface Mount
35V
Fixed
TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
D2PAK-3
-
RFQ
LM9036M-3.3
Texas Instruments
IC REG LINEAR 3.3V 50MA 8SOIC
Na skladě6920 pcs
20 µA
Positive
-
3.3V
-
1
50mA
0.40V @ 50mA
60dB (120Hz)
Over Temperature, Reverse Polarity, Short Circuit
LM9036
Tube
-
-40°C ~ 125°C
Surface Mount
40V
Fixed
8-SOIC (0.154', 3.90mm Width)
8-SOIC
2 mA
RFQ
TC1262-3.0VDB
Microchip Technology
IC REG LINEAR 3V 500MA SOT223-3
Na skladě68940 pcs
130 µA
Positive
-
3V
-
1
500mA
0.65V @ 500mA
64dB (1kHz)
Over Current, Over Temperature
TC1262
Tube
-
-40°C ~ 125°C
Surface Mount
6V
Fixed
TO-261-4, TO-261AA
SOT-223-3
-
RFQ
AP7311-28WG-7
Diodes Incorporated
IC REG LINEAR 2.8V 150MA SOT25
Na skladě278550 pcs
75 µA
Positive
Enable
2.8V
-
1
150mA
0.3V @ 150mA
65dB (100Hz)
Over Current, Over Temperature, Short Circuit
AP7311
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
6V
Fixed
SC-74A, SOT-753
SOT-25
85 µA
RFQ
R1100D331C-TR-F
Nisshinbo Micro Devices Inc.
IC REG LIN 3.3V 100MA SON1408-3
Na skladě215750 pcs
3 µA
Positive
Enable
3.3V
-
1
100mA
0.03V @ 1mA
-
Over Current
R1100
Tape & Reel (TR)
R1100D
-40°C ~ 85°C
Surface Mount
6V
Fixed
SOT-623F
SON1408-3
-
RFQ
RT9058-33GVL
Richtek USA Inc.
IC REG LIN 3.3V 100MA SOT23-3L
Na skladě87630 pcs
3.5 µA
Positive
-
3.3V
-
1
100mA
0.5V @ 10mA
70dB ~ 40dB (100Hz ~ 100kHz)
Over Current
RT9058
Tape & Reel (TR)
-
-40°C ~ 85°C (TA)
Surface Mount
36V
Fixed
TO-236-3, SC-59, SOT-23-3
SOT-23-3L
5 µA
RFQ
RP150K001A-TR
Nisshinbo Micro Devices Inc.
IC REG LINEAR POS ADJ 300MA 8DFN
Na skladě60850 pcs
33 µA
Positive
Enable
1.5V
3.3V
2
300mA, 300mA
1V @ 300mA
80dB (1kHz)
Over Current
RP150
Tape & Reel (TR)
RP150K
-40°C ~ 85°C
Surface Mount
5.25V
Adjustable
8-UFDFN Exposed Pad
DFN(PL)2020-8
-
RFQ
SPX29152T5-L
MaxLinear, Inc.
IC REG LIN POS ADJ 1.5A TO263-5
Na skladě13300 pcs
-
Positive
Enable
1.25V
15.4V
1
1.5A
0.6V @ 1.5A
-
Over Current, Reverse Polarity, Transient Voltage
-
Tube
-
-40°C ~ 125°C
Surface Mount
16V
Adjustable
TO-263-6, D²Pak (5 Leads + Tab), TO-263BA
TO-263-5
-
RFQ
LP2983IM5-1.2
Texas Instruments
IC REG LINEAR 1.2V 150MA SOT23-5
Na skladě3870 pcs
95 µA
Positive
Enable
1.2V
-
1
150mA
-
65dB (1kHz)
Over Current, Over Temperature, Short Circuit
LP2983
Tape & Reel (TR)
-
-40°C ~ 125°C
Surface Mount
16V
Fixed
SC-74A, SOT-753
SOT-23-5
2 mA
RFQ