ADR370BRTZ-REEL7
Analog Devices Inc.
IC VREF SERIES PREC SOT-23-3
Varastossa8600 pcs
ADR370BRTZ-REEL7.pdf
-
-
ADR370
Cut Tape (CT)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-
Surface Mount
-
-
-
-
SOT-23-3
-
-
-
-
-
-
-
-
RFQ
LM285LPR-2-5
Texas Instruments
IC VREF SHUNT 1.5% TO92-3
Varastossa177600 pcs
LM285LPR-2-5.pdf
-
-
LM285
Tape & Reel (TR)
-
TO-226-3, TO-92-3 (TO-226AA) Formed Leads
-
-
-
-
-40°C ~ 85°C (TA)
Through Hole
Fixed
-
±1.5%
20ppm/°C Typical
TO-92-3
20 mA
Shunt
2.5V
-
-
120µVrms
20 µA
-
RFQ
MAX6061BEUR-T
Analog Devices Inc./Maxim Integrated
IC VREF SERIES 0.48% SOT23-3
Varastossa14375 pcs
MAX6061BEUR-T.pdf
-
-
MAX6061
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
125µA
-40°C ~ 85°C (TA)
Surface Mount
Fixed
2.5V ~ 12.6V
±0.48%
30ppm/°C
SOT-23-3
5 mA
Series
1.248V
-
13µVp-p
15µVrms
-
-
RFQ
TLVH431QDBZTG4
Texas Instruments
IC VREF SHUNT ADJ 1.5% SOT23-3
Varastossa10136 pcs
TLVH431QDBZTG4.pdf
-
-
TLVH431
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 125°C (TA)
Surface Mount
Adjustable
-
±1.5%
-
SOT-23-3
70 mA
Shunt
1.24V
18 V
-
-
100 µA
-
RFQ
LT1460JCS3-3#TRPBF
Analog Devices Inc.
IC VREF SERIES 0.4% SOT23-3
Varastossa31747 pcs
LT1460JCS3-3#TRPBF.pdf
-
-
LT1460
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
220µA
0°C ~ 70°C (TA)
Surface Mount
Fixed
3.9V ~ 20V
±0.4%
20ppm/°C
SOT-23-3
40 mA
Series
3V
-
4ppmp-p
4ppmrms
-
-
RFQ
TL432ACDBZR
Texas Instruments
IC VREF SHUNT ADJ 1% SOT23-3
Varastossa232490 pcs
TL432ACDBZR.pdf
-
-
TL432
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
0°C ~ 70°C (TA)
Surface Mount
Adjustable
-
±1%
-
SOT-23-3
100 mA
Shunt
2.495V
36 V
-
-
600 µA
-
RFQ
MAX6071BAUT18+T
Analog Devices Inc./Maxim Integrated
IC VREF SERIES 0.08% SOT23-6
Varastossa32773 pcs
MAX6071BAUT18+T.pdf
-
-
MAX6071
Tape & Reel (TR)
-
SOT-23-6
-
-
-
260µA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
2.7V ~ 5.5V
±0.08%
8ppm/°C
SOT-6
10 mA
Series
1.8V
-
6µVp-p
7µVrms
-
-
RFQ
MAX6043BAUT10#TG16
Analog Devices Inc./Maxim Integrated
IC VREF SERIES 0.1% SOT23-6
Varastossa15897 pcs
MAX6043BAUT10#TG16.pdf
-
-
MAX6043
Tape & Reel (TR)
-
SOT-23-6
-
-
-
650µA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
12V ~ 40V
±0.1%
25ppm/°C
SOT-6
10 mA
Series
10V
-
19µVp-p
30µVrms
-
-
RFQ
LM4040DIM3-4.1-TR
Microchip Technology
IC VREF SHUNT 1% SOT23-3
Varastossa6092 pcs
LM4040DIM3-4.1-TR.pdf
-
-
LM4040
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±1%
150ppm/°C
SOT-23-3
15 mA
Shunt
4.096V
-
-
80µVrms
78 µA
-
RFQ
LT1634BCMS8-1.25#TRPBF
Analog Devices Inc.
IC VREF SHUNT 0.05% 8MSOP
Varastossa6414 pcs
LT1634BCMS8-1.25#TRPBF.pdf
-
-
LT1634
Tape & Reel (TR)
-
8-TSSOP, 8-MSOP (0.118', 3.00mm Width)
-
-
-
-
0°C ~ 70°C (TA)
Surface Mount
Fixed
-
±0.05%
25ppm/°C
8-MSOP
100 mA
Shunt
1.25V
-
10µVp-p
-
7 µA
-
RFQ
LTC6655LNBHMS8-4.096#TRPBF
Analog Devices Inc.
0.25PPM N, L DRIFT PREC REFS
Varastossa49776 pcs
-
-
LTC6655
Tape & Reel (TR)
-
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
-
-
-
7.5mA
-40°C ~ 125°C
Surface Mount
Fixed
3V ~ 13.2V
±0.025%
2ppm/°C
8-MSOP
-
Series
4.096V
-
0.12ppmp-p
0.21ppmrms
-
-
RFQ
LM4050BIM3-2.5+T
Analog Devices Inc./Maxim Integrated
LM4050 50PPM PER DEGREE CELSIUS
Varastossa44900 pcs
-
-
LM4050
Bulk
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±0.2%
50ppm/°C
SOT-23-3
15 mA
Shunt
2.5V
-
-
41µVrms
65 µA
-
RFQ
MCP1501T-18E/SN
Microchip Technology
IC VREF SERIES 0.1% 8SOIC
Varastossa46088 pcs
MCP1501T-18E/SN.pdf
-
-
MCP1501
Tape & Reel (TR)
-
8-SOIC (0.154', 3.90mm Width)
-
-
-
550µA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
2V ~ 5.5V
±0.1%
50ppm/°C
8-SOIC
20 mA
Series
1.8V
-
-
-
-
-
RFQ
AD780ARZ
Analog Devices Inc.
IC VREF SERIES 0.2%/0.17% 8SOIC
Varastossa5225 pcs
AD780ARZ.pdf
-
-
AD780
Tube
-
8-SOIC (0.154", 3.90mm Width)
-
-
-
1mA
-40°C ~ 85°C (TA)
Surface Mount
Programmable
4V ~ 36V
±0.2%, ±0.17%
7ppm/°C
8-SOIC
10 mA
Series, Shunt
±2.5V, ±3V
-
4µVp-p
-
1 mA
-
RFQ
MAX874CPA
Analog Devices Inc./Maxim Integrated
IC VREF SERIES 0.38% 8DIP
Varastossa12115 pcs
MAX874CPA.pdf
-
-
MAX874
Tube
-
8-DIP (0.300', 7.62mm)
-
-
-
15µA
0°C ~ 70°C (TA)
Through Hole
Fixed
4.3V ~ 20V
±0.38%
40ppm/°C
8-PDIP
400 µA
Series
4.096V
-
90µVp-p
-
-
-
RFQ
TLVH431AQPKG3
Texas Instruments
IC VREF SHUNT ADJ 1% SOT89-3
Varastossa34555 pcs
TLVH431AQPKG3.pdf
-
-
TLVH431
Tape & Reel (TR)
-
TO-243AA
-
-
-
-
-40°C ~ 125°C (TA)
Surface Mount
Adjustable
-
±1%
-
SOT-89-3
70 mA
Shunt
1.24V
18 V
-
-
100 µA
-
RFQ
REF5050AIDGKT
Texas Instruments
IC VREF SERIES 0.1% 8VSSOP
Varastossa16042 pcs
REF5050AIDGKT.pdf
-
-
REF5050
Tape & Reel (TR)
-
8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
-
-
-
1.2mA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
5.2V ~ 18V
±0.1%
8ppm/°C
8-VSSOP
10 mA
Series
5V
-
6µVpp/V
-
-
-
RFQ
TL4050A50IDBZR
Texas Instruments
IC VREF SHUNT 0.1% SOT23-3
Varastossa27740 pcs
TL4050A50IDBZR.pdf
-
-
TL4050
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±0.1%
50ppm/°C
SOT-23-3
15 mA
Shunt
5V
-
-
93µVrms
80 µA
-
RFQ
TS3431BILT
STMicroelectronics
IC VREF SHUNT ADJ 0.5% SOT23-3
Varastossa126240 pcs
TS3431BILT.pdf
-
-
TS3431
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 125°C (TA)
Surface Mount
Adjustable
-
±0.5%
100ppm/°C
SOT-23-3
100 mA
Shunt
1.24V
24 V
-
-
500 µA
-
RFQ
TL431AIDBVRG4
Texas Instruments
IC VREF SHUNT ADJ 1% SOT23-5
Varastossa11370 pcs
-
-
TL431
Tape & Reel (TR)
-
SC-74A, SOT-753
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Adjustable
-
±1%
-
SOT-23-5
100 mA
Shunt
2.495V
36 V
-
-
700 µA
-
RFQ
ZTL431AE5TA
Diodes Incorporated
IC VREF SHUNT ADJ 1% SOT23-5
Varastossa5250 pcs
ZTL431AE5TA.pdf
-
-
ZTL431
Tape & Reel (TR)
-
SC-74A, SOT-753
-
-
-
-
-40°C ~ 125°C (TA)
Surface Mount
Adjustable
-
±1%
-
SOT-23-5
100 mA
Shunt
2.5V
20 V
-
-
600 µA
-
RFQ
LT6654BIS6-4.096#TRPBF
Analog Devices Inc.
IC VREF SERIES 0.1% TSOT23-6
Varastossa11866 pcs
LT6654BIS6-4.096#TRPBF.pdf
-
-
LT6654
Tape & Reel (TR)
-
SOT-23-6 Thin, TSOT-23-6
-
-
-
600µA
-40°C ~ 85°C (TA)
Surface Mount
Fixed
4.596V ~ 36V
±0.1%
20ppm/°C
TSOT-23-6
10 mA
Series
4.096V
-
2ppmp-p
2ppmrms
-
-
RFQ
TS4061AILT-1.225
STMicroelectronics
IC VREF SHUNT 0.1% SOT23-3
Varastossa89280 pcs
-
-
TS4061
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±0.1%
35ppm/°C
SOT-23-3
15 mA
Shunt
1.225V
-
10µVp-p
95µVrms
12 µA
-
RFQ
LM4050BIX3-5.0
Analog Devices Inc./Maxim Integrated
LM4050 50PPM PER DEGREE CELSIUS
Varastossa31738 pcs
-
-
LM4050
Bulk
-
SC-70, SOT-323
-
-
Automotive, AEC-Q100
-
-40°C ~ 125°C (TA)
Surface Mount
Fixed
-
±0.2%
50ppm/°C
SC-70-3
15 mA
Shunt
5V
-
-
80µVrms
80 µA
-
RFQ
ZR40401F25TA
Diodes Incorporated
IC VREF SHUNT 1% SOT23
Varastossa94860 pcs
ZR40401F25TA.pdf
-
-
ZR40401
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±1%
100ppm/°C
SOT-23-3
15 mA
Shunt
2.5V
-
-
45µVrms
60 µA
-
RFQ
LT1461DHS8-3#PBF
Analog Devices Inc.
IC VREF SERIES 0.15% 8SOIC
Varastossa17009 pcs
LT1461DHS8-3#PBF.pdf
-
-
LT1461
Tube
-
8-SOIC (0.154', 3.90mm Width)
-
-
-
70µA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
3.5V ~ 20V
±0.15%
20ppm/°C
8-SO
100 mA
Series
3V
-
8ppmp-p
9.6ppmrms
-
-
RFQ
TLVH432BIPKG3
Texas Instruments
IC VREF SHUNT ADJ 0.5% SOT89-3
Varastossa9160 pcs
TLVH432BIPKG3.pdf
-
-
TLVH432
Tape & Reel (TR)
-
TO-243AA
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Adjustable
-
±0.5%
-
SOT-89-3
70 mA
Shunt
1.24V
18 V
-
-
100 µA
-
RFQ
TLVH432BIDBZTG4
Texas Instruments
IC VREF SHUNT ADJ 0.5% SOT23-3
Varastossa17102 pcs
TLVH432BIDBZTG4.pdf
-
-
TLVH432
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Adjustable
-
±0.5%
-
SOT-23-3
70 mA
Shunt
1.24V
18 V
-
-
100 µA
-
RFQ
REF102BP
Texas Instruments
IC VREF SERIES 0.05% 8DIP
Varastossa2220 pcs
REF102BP.pdf
-
-
REF102
Tube
-
8-DIP (0.300', 7.62mm)
-
-
-
1.4mA
-25°C ~ 85°C (TA)
Through Hole
Fixed
11.4V ~ 36V
±0.05%
5ppm/°C
8-PDIP
10 mA
Series
10V
-
5µVp-p
-
-
-
RFQ
TL431QDBVTG4
Texas Instruments
IC VREF SHUNT ADJ 2.2% SOT23-5
Varastossa4973 pcs
TL431QDBVTG4.pdf
-
-
TL431
Tape & Reel (TR)
-
SC-74A, SOT-753
-
-
-
-
-40°C ~ 125°C (TA)
Surface Mount
Adjustable
-
±2.2%
-
SOT-23-5
100 mA
Shunt
2.495V
36 V
-
-
1 mA
-
RFQ
TA76431AS(T6CNO,FM
Toshiba Semiconductor and Storage
IC VREF 100MA LSTM
Varastossa14293 pcs
TA76431AS(T6CNO,FM.pdf
-
-
TA76431
Bulk
-
TO-226-3, TO-92-3 Long Body
-
-
-
-
-40°C ~ 85°C
Through Hole
-
-
-
-
LSTM
-
-
-
-
-
-
-
-
RFQ
LT6654AHS6-2.5#TRPBF
Analog Devices Inc.
IC VREF SERIES 0.05% TSOT23-6
Varastossa6059 pcs
LT6654AHS6-2.5#TRPBF.pdf
-
-
LT6654
Tape & Reel (TR)
-
SOT-23-6 Thin, TSOT-23-6
-
-
-
600µA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
3V ~ 36V
±0.05%
10ppm/°C
TSOT-23-6
10 mA
Series
2.5V
-
1.5ppmp-p
2ppmrms
-
-
RFQ
LM4040AIM3-8.2/NOPB
Texas Instruments
IC VREF SHUNT 0.1% SOT23-3
Varastossa5067 pcs
-
-
LM4040
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±0.1%
100ppm/°C
SOT-23-3
15 mA
Shunt
8.192V
-
-
130µVrms
95 µA
-
RFQ
LM4040C20QDBZRG4
Texas Instruments
IC VREF SHUNT 0.5% SOT23-3
Varastossa8809 pcs
-
-
LM4040
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±0.5%
100ppm/°C
SOT-23-3
15 mA
Shunt
2.048V
-
-
35µVrms
80 µA
-
RFQ
MAX6174BASA/V+
Analog Devices Inc./Maxim Integrated
IC VREF SERIES 0.1% 8SOIC
Varastossa47584 pcs
MAX6174BASA/V+.pdf
-
-
MAX6174
Tube
-
8-SOIC (0.154", 3.90mm Width)
-
-
-
650µA
-40°C ~ 125°C
Surface Mount
Fixed
6.1V ~ 40V
±0.1%
10ppm/°C
8-SOIC
30 mA
Series
4.096V
-
7µVp-p
11.5µVrms
-
-
RFQ
TLVH431BQLP
Texas Instruments
IC VREF SHUNT ADJ 0.5% TO92-3
Varastossa30791 pcs
TLVH431BQLP.pdf
-
-
TLVH431
Bulk
-
TO-226-3, TO-92-3 (TO-226AA)
-
-
-
-
-40°C ~ 125°C (TA)
Through Hole
Adjustable
-
±0.5%
-
TO-92-3
70 mA
Shunt
1.24V
18 V
-
-
100 µA
-
RFQ
LT1634BCS8-2.5#PBF
Analog Devices Inc.
IC VREF SHUNT 0.05% 8SOIC
Varastossa39606 pcs
LT1634BCS8-2.5#PBF.pdf
-
-
LT1634
Tube
-
8-SOIC (0.154', 3.90mm Width)
-
-
-
-
0°C ~ 70°C (TA)
Surface Mount
Fixed
-
±0.05%
25ppm/°C
8-SO
50 mA
Shunt
2.5V
-
15µVp-p
-
8 µA
-
RFQ
LM4040D25IDBZTG4
Texas Instruments
IC VREF SHUNT 1% SOT23-3
Varastossa13414 pcs
-
-
LM4040
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±1%
150ppm/°C
SOT-23-3
15 mA
Shunt
2.5V
-
-
35µVrms
80 µA
-
RFQ
ZXRE330ESA-7
Diodes Incorporated
IC VREF SHUNT 2% SOT23
Varastossa33499 pcs
ZXRE330ESA-7.pdf
-
-
ZXRE330
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
-
-
-40°C ~ 85°C (TA)
Surface Mount
Fixed
-
±2%
150ppm/°C
SOT-23-3
5 mA
Shunt
3.3V
-
-
55µVrms
2 µA
-
RFQ
LT1460EIN8-2.5#PBF
Analog Devices Inc.
IC VREF SERIES 0.125% 8DIP
Varastossa46556 pcs
LT1460EIN8-2.5#PBF.pdf
-
-
LT1460
Tube
-
8-DIP (0.300', 7.62mm)
-
-
-
165µA
-40°C ~ 85°C (TA)
Through Hole
Fixed
3.4V ~ 20V
±0.125%
20ppm/°C
8-PDIP
40 mA
Series
2.5V
-
10µVp-p
10µVrms
-
-
RFQ
LM4040C30ILP
Texas Instruments
IC VREF SHUNT 0.5% TO92-3
Varastossa29417 pcs
LM4040C30ILP.pdf
-
-
LM4040
Bulk
-
TO-226-3, TO-92-3 (TO-226AA)
-
-
-
-
-40°C ~ 85°C (TA)
Through Hole
Fixed
-
±0.5%
100ppm/°C
TO-92-3
15 mA
Shunt
3V
-
-
35µVrms
82 µA
-
RFQ
ZR285R03STZ
Diodes Incorporated
IC VREF SHUNT 3% TO92
Varastossa12248 pcs
ZR285R03STZ.pdf
-
-
ZR285
Tape & Box (TB)
-
TO-226-3, TO-92-3 (TO-226AA) Formed Leads
-
-
-
-
-40°C ~ 85°C (TA)
Through Hole
Fixed
-
±3%
90ppm/°C
TO-92
20 mA
Shunt
2.5V
-
-
60µVrms
20 µA
-
RFQ
LT1461CCS8-5#TRPBF
Analog Devices Inc.
IC VREF SERIES 0.08% 8SOIC
Varastossa14881 pcs
LT1461CCS8-5#TRPBF.pdf
-
-
LT1461
Tape & Reel (TR)
-
8-SOIC (0.154', 3.90mm Width)
-
-
-
70µA
0°C ~ 70°C (TA)
Surface Mount
Fixed
5.5V ~ 20V
±0.08%
12ppm/°C
8-SO
100 mA
Series
5V
-
8ppmp-p
9.6ppmrms
-
-
RFQ
REF3120AQDBZRQ1
Texas Instruments
IC VREF SERIES 0.2% SOT23-3
Varastossa15966 pcs
REF3120AQDBZRQ1.pdf
-
-
REF3120
Tape & Reel (TR)
-
TO-236-3, SC-59, SOT-23-3
-
-
Automotive, AEC-Q100
135µA
-40°C ~ 125°C (TA)
Surface Mount
Fixed
2.098V ~ 5.5V
±0.2%
20ppm/°C
SOT-23-3
10 mA
Series
2.048V
-
27µVp-p
39µVrms
-
-
RFQ
VRE107M
Apex Microtechnology
IC VREF SERIES +-5V 14CDIP
Varastossa35344 pcs
VRE107M.pdf
Lead free / RoHS Compliant
1 (Unlimited)
-
-
VRE107
14-CDIP (0.300", 7.62mm)
18 Weeks
Series Voltage Reference IC ±0.02% 10mA 14-CDIP
-
9mA
-55°C ~ 125°C (TA)
Through Hole
Fixed
13.5 V ~ 22 V
±0.02%
2ppm/°C Typical
14-CDIP
10mA
Series
±5V
-
3µVp-p
-
-
Tube
RFQ
REF01CSA-G106
Analog Devices Inc./Maxim Integrated
10V VOLTAGE REFERENCE
Varastossa46536 pcs
-
-
REF01
Bulk
-
8-SOIC (0.154", 3.90mm Width)
-
-
REF01
1.6mA
0°C ~ 70°C (TA)
Surface Mount
Fixed
13V ~ 30V
±1%
65ppm/°C
8-SOIC
21 mA
Series
10V
-
25µVp-p
-
-
-
RFQ
AD584IR
Rochester Electronics, LLC
THREE TERMINAL VOLTAGE REFERENCE
Varastossa39730 pcs
-
-
AD584
Bulk
-
-
-
-
*
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RFQ
VRE210M-83
Apex Microtechnology
IC VREF SERIES 10V 20CLCC
Varastossa43781 pcs
Lead free / RoHS Compliant
1 (Unlimited)
-
-
-
20-CLCC
18 Weeks
Series Voltage Reference IC ±0.01% 10mA 20-CLCC
-
7mA
-55°C ~ 125°C (TA)
Surface Mount
Fixed
13.5 V ~ 22 V
±0.01%
2ppm/°C Typical
20-CLCC
10mA
Series
10V
-
6µVp-p
-
-
Tube
RFQ
MAX6034AEXR30+G11
Analog Devices Inc./Maxim Integrated
IC POWER MANAGEMENT
Varastossa12395 pcs
MAX6034AEXR30+G11.pdf
-
-
MAX6034
Bulk
-
-
-
-
*
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RFQ
SCV1423DMR2G
onsemi
DIODE
Varastossa13745 pcs
-
-
SCV1423
Bulk
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
RFQ