H11L1SR2VM
onsemi
OPTOISO 4.17KV OPN COLL 6SMD
स्टॉक में91500 pcs
4170Vrms
Tape & Reel (TR)
H11L1
30mA
1.2V
4µs, 4µs
-
1/0
100ns, 100ns
1MHz
50 mA
3V ~ 15V
6-SMD
6-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
H11N2SR2VM
onsemi
OPTOISO 4.17KV OPN COLL 6SMD
स्टॉक में4720 pcs
4170Vrms
Tape & Reel (TR)
H11N
30mA
1.4V
330ns, 330ns
-
1/0
7.5ns, 12ns
5MHz
50 mA
4V ~ 15V
6-SMD
6-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-2200-000E
Broadcom Limited
OPTOISO 3.75KV TRI-STATE 8DIP
स्टॉक में27857 pcs
3750Vrms
Tube
HCPL-2200
10mA
1.5V
300ns, 300ns
1kV/µs
1/0
55ns, 15ns
2.5MBd
25 mA
4.5V ~ 20V
8-DIP
8-DIP (0.300', 7.62mm)
1
Tri-State
Through Hole
-40°C ~ 85°C
DC
-
RFQ
HCPL-5230
Broadcom Limited
OPTOISO 1.5KV 2CH PUSH PULL 8DIP
स्टॉक में286 pcs
1500VDC
Tube
HCPL-5230
8mA
1.3V
350ns, 350ns
1kV/µs
2/0
45ns, 10ns
5MBd
15 mA
4.5V ~ 20V
8-DIP
8-CDIP (0.300", 7.62mm)
2
Push-Pull, Totem Pole
Through Hole
-55°C ~ 125°C
DC
-
RFQ
HCPL-7601
Broadcom Limited
OPTOISO 3.75KV OPEN COLL 8DIP
स्टॉक में5350 pcs
3750Vrms
Tube
-
20mA
1.5V
75ns, 75ns
1kV/µs
1/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
8-DIP
8-DIP (0.300", 7.62mm)
1
Open Collector, Schottky Clamped
Through Hole
-40°C ~ 85°C
DC
-
RFQ
HCPL-2200-500E
Broadcom Limited
OPTOISO 3.75KV TRI-STATE SMD GW
स्टॉक में18320 pcs
3750Vrms
Tape & Reel (TR)
HCPL-2200
10mA
1.5V
300ns, 300ns
1kV/µs
1/0
55ns, 15ns
2.5MBd
25 mA
4.5V ~ 20V
8-DIP Gull Wing
8-SMD, Gull Wing
1
Tri-State
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
ACPL-M62L-000E
Broadcom Limited
OPTOISO 3.75KV OPEN DRAIN 5SO
स्टॉक में22869 pcs
3750Vrms
Tube
ACPL-M62
8mA
1.3V
80ns, 80ns
20kV/µs
1/0
12ns, 12ns
10MBd
10 mA
2.7V ~ 5.5V
5-SO
6-SOIC (0.173", 4.40mm Width), 5 Leads
1
Open Drain
Surface Mount
-40°C ~ 105°C
DC
-
RFQ
PS9121-V-F3-AX
CEL
OPTOISO 3.75KV OPN COLLECTOR 5SO
स्टॉक में4990 pcs
3750Vrms
Tape & Reel (TR)
-
30mA
1.65V
75ns, 75ns
15kV/µs
1/0
20ns, 5ns
15Mbps
25 mA
2.7V ~ 3.6V
5-SO
6-SOIC (0.173', 4.40mm Width), 5 Leads
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
NEPOC
RFQ
HCPL-2400-000E
Broadcom Limited
OPTOISO 3.75KV TRI-STATE 8DIP
स्टॉक में12636 pcs
3750Vrms
Tube
HCPL-2400
10mA
1.3V
55ns, 55ns
1kV/µs
1/0
20ns, 10ns
40MBd
25 mA
4.75V ~ 5.25V
8-DIP
8-DIP (0.300", 7.62mm)
1
Tri-State
Through Hole
-40°C ~ 85°C
DC
-
RFQ
HCPL-0600#500
Broadcom Limited
OPTOISO 3.75KV OPN COLLECTOR 8SO
स्टॉक में18977 pcs
3750Vrms
Tape & Reel (TR)
HCPL-0600
20mA
1.5V
100ns, 100ns
5kV/µs
1/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
8-SO Tall
8-SOIC (0.154', 3.90mm Width)
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-061A
Broadcom Limited
OPTOISO 3.75KV OPN COLLECTOR 8SO
स्टॉक में12044 pcs
3750Vrms
Tube
HCPL-061
10mA
1.3V
100ns, 100ns
1kV/µs
1/0
42ns, 12ns
10MBd
50 mA
4.5V ~ 5.5V
8-SO Tall
8-SOIC (0.154', 3.90mm Width)
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
H11L3SR2VM
onsemi
OPTOISO 4.17KV OPN COLL 6SMD
स्टॉक में68680 pcs
4170Vrms
Tape & Reel (TR)
H11L3
30mA
1.2V
4µs, 4µs
-
1/0
100ns, 100ns
1MHz
50 mA
3V ~ 15V
6-SMD
6-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-2202
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8DIP
स्टॉक में12062 pcs
3750Vrms
Tube
HCPL-2202
10mA
1.5V
300ns, 300ns
1kV/µs
1/0
30ns, 7ns
5MBd
25 mA
4.5V ~ 20V
8-DIP
8-DIP (0.300", 7.62mm)
1
Push-Pull, Totem Pole
Through Hole
-40°C ~ 85°C
DC
-
RFQ
74OL6011
onsemi
OPTOISO 5.3KV OPN COLLECTOR 6DIP
स्टॉक में3890 pcs
5300Vrms
Tube
74OL601
-
-
180ns, 120ns
5kV/µs
1/0
50ns, 5ns
15MBd
40 mA
4.5V ~ 15V
6-DIP
6-DIP (0.300', 7.62mm)
1
Open Collector, Schottky Clamped
Through Hole
0°C ~ 70°C
Logic
OPTOLOGIC™
RFQ
H11L2S
onsemi
OPTOISOLATOR SHMITT TRIGGER SMT
स्टॉक में4650 pcs
5300Vrms
Tube
H11L
10mA
-
-
-
1/0
-
1MHz
50 mA
-
6-SMD
6-SMD, Gull Wing
1
Open Collector
Surface Mount
-
DC
-
RFQ
ACPL-M61T-500E
Broadcom Limited
OPTOISO 4KV OPN COLLECTOR 5SO
स्टॉक में11217 pcs
4000Vrms
Tape & Reel (TR)
ACPL-M61
20mA
1.5V
75ns, 75ns
15kV/µs
1/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
5-SO
6-SOIC (0.173', 4.40mm Width), 5 Leads
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 125°C
DC
Automotive, AEC-Q100, R²Coupler™
RFQ
PC900V0NSZXF
Sharp Microelectronics
OPTOISO 5KV OPEN COLLECTOR 6DIP
स्टॉक में4050 pcs
5000Vrms
Tube
-
50mA
1.1V
6µs, 3µs
-
1/0
100ns, 50ns
-
50 mA
3V ~ 15V
6-DIP
6-DIP (0.300', 7.62mm)
1
Open Collector
Through Hole
-25°C ~ 85°C
DC
OPIC™
RFQ
HCPL-0723
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8SO
स्टॉक में8867 pcs
3750Vrms
Tube
HCPL-0723
-
-
22ns, 22ns
10kV/µs
1/0
8ns, 6ns
50MBd
10 mA
4.5V ~ 5.5V
8-SO Tall
8-SOIC (0.154', 3.90mm Width)
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 85°C
Logic
-
RFQ
HCPL-2430-500E
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8DIP GW
स्टॉक में6146 pcs
3750Vrms
Tape & Reel (TR)
HCPL-2430
10mA
1.3V
55ns, 55ns
1kV/µs
2/0
20ns, 10ns
40MBd
25 mA
4.75V ~ 5.25V
8-DIP Gull Wing
8-SMD, Gull Wing
2
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
PS9123-F3-AX
CEL
OPTOISO 3.75KV PUSH PULL 5SO
स्टॉक में3680 pcs
3750Vrms
Tape & Reel (TR)
-
20mA
1.55V
60ns, 60ns
15kV/µs
1/0
-
15Mbps
13 mA
4.5V ~ 5.5V
5-SO
6-SOIC (0.173', 4.40mm Width), 5 Leads
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
VO2611
Vishay Semiconductor Opto Division
OPTOISO 5.3KV OPEN DRAIN 8DIP
स्टॉक में35470 pcs
5300Vrms
Tube
VO2611
20mA
1.4V
100ns, 100ns
15kV/µs
1/0
23ns, 7ns
10MBd
50 mA
4.5V ~ 5.5V
8-DIP
8-DIP (0.300", 7.62mm)
1
Open Drain
Through Hole
-40°C ~ 100°C
DC
-
RFQ
HCPL0639R2
onsemi
OPTOISO 3.75KV 2CH OPEN COLL 8SO
स्टॉक में11094 pcs
3750Vrms
Tape & Reel (TR)
HCPL0639
-
1.75V (Max)
75ns, 75ns
25kV/µs
2/0
17ns, 5ns
10Mbps
15 mA
4.5V ~ 5.5V
8-SOIC
8-SOIC (0.154", 3.90mm Width)
2
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-M601-500E
Broadcom Limited
OPTOISO 3.75KV OPN COLLECTOR 5SO
स्टॉक में27314 pcs
3750Vrms
Tape & Reel (TR)
HCPL-M601
20mA
1.5V
75ns, 75ns
5kV/µs
1/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
5-SO
6-SOIC (0.173', 4.40mm Width), 5 Leads
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL2601
Texas Instruments
LOGIC IC OUTPUT OPTOCOUPLER
स्टॉक में47790 pcs
2500Vrms
Tube
-
50mA
1.4V
75ns, 75ns
5kV/µs
1/0
50ns, 12ns
10Mbps
50 mA
4.5V ~ 5.5V
8-DIP
8-DIP (0.300", 7.62mm)
1
Open Collector
Through Hole
-40°C ~ 85°C
DC
-
RFQ
HCPL-J456-500E
Broadcom Limited
OPTOISO 3.75KV OPEN COLL 8DIP GW
स्टॉक में23084 pcs
3750Vrms
Tape & Reel (TR)
HCPL-J456
25mA
1.6V
550ns, 480ns
15kV/µs
1/0
-
-
15 mA
4.5V ~ 30V
8-DIP Gull Wing
8-SMD, Gull Wing
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
PS9601L
CEL
OPTOISO 5KV OPEN DRAIN 8SMD GW
स्टॉक में5380 pcs
5000Vrms
Bulk
-
30mA
1.65V
75ns, 75ns
-
1/0
20ns, 10ns
-
50 mA
4.5V ~ 5.5V
8-DIP Gull Wing
8-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
TLP2962(F)
Toshiba Semiconductor and Storage
OPTOISO 5KV OPEN COLLECTOR 8DIP
स्टॉक में111330 pcs
5000Vrms
Tube
TLP2962
20mA
1.55V
75ns, 75ns
20kV/µs
1/0
3ns, 12ns
15MBd
50 mA
2.7V ~ 5.5V
8-DIP
8-DIP (0.300", 7.62mm)
1
Open Collector
Through Hole
-40°C ~ 125°C
DC
-
RFQ
FOD0708R2
onsemi
OPTOISO 2.5KV PUSH PULL 8SO
स्टॉक में5140 pcs
2500Vrms
Tape & Reel (TR)
FOD070
20mA
1.45V
60ns, 60ns
25kV/µs
1/0
12ns, 8ns
15MBd
2 mA
4.5V ~ 5.5V
8-SOIC
8-SOIC (0.154', 3.90mm Width)
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
ACPL-072L-000E
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8SO
स्टॉक में18019 pcs
3750Vrms
Tube
ACPL-072
-
-
40ns, 40ns
10kV/µs
1/0
9ns, 8ns
25MBd
10 mA
3V ~ 3.6V, 4.5V ~ 5.5V
8-SO Tall
8-SOIC (0.154', 3.90mm Width)
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 105°C
Logic
-
RFQ
ACPL-077L-000E
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8SO
स्टॉक में20410 pcs
3750Vrms
Tube
ACPL-077
-
-
40ns, 40ns
35kV/µs
1/0
4ns, 3ns
25MBd
10 mA
3V ~ 3.6V, 4.5V ~ 5.5V
8-SO Tall
8-SOIC (0.154', 3.90mm Width)
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 105°C
Logic
-
RFQ
ELM611(TA)
Everlight Electronics Co Ltd
OPTOISO 3.75KV OPEN COLL 5SOP
स्टॉक में21245 pcs
3750Vrms
Tape & Reel (TR)
ELM611
50mA
1.45V
100ns, 100ns
20kV/µs
1/0
40ns, 10ns
10Mbps
50 mA
7V
5-SOP
6-SOIC (0.173", 4.40mm Width), 5 Leads
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-M600
Broadcom Limited
OPTOISO 3.75KV OPN COLLECTOR 5SO
स्टॉक में25307 pcs
3750Vrms
Tube
HCPL-M600
20mA
1.5V
75ns, 75ns
10kV/µs (Typ)
1/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
5-SO
6-SOIC (0.173', 4.40mm Width), 5 Leads
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
H11N2SM
onsemi
OPTOISO 4.17KV OPN COLL 6SMD
स्टॉक में5420 pcs
4170Vrms
Tube
H11N
30mA
1.4V
330ns, 330ns
-
1/0
7.5ns, 12ns
5MHz
50 mA
4V ~ 15V
6-SMD
6-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
PS9513L3-E3-AX
CEL
OPTOISO 5KV OPEN COLL 8DIP GW
स्टॉक में4240 pcs
5000Vrms
Tape & Reel (TR)
-
25mA
1.65V
750ns, 500ns
15kV/µs
1/0
-
1Mbps
15 mA
4.5V ~ 20V
8-DIP Gull Wing
8-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
ACPL-W456-500E
Broadcom Limited
OPTOISO 5KV OPEN COLLECTOR 6SO
स्टॉक में32216 pcs
5000Vrms
Tape & Reel (TR)
ACPL-W456
25mA
1.5V
550ns, 400ns
15kV/µs
1/0
-
-
15 mA
4.5V ~ 30V
6-SO
6-SOIC (0.295", 7.50mm Width)
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
ACPL-077L-500E
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8SO
स्टॉक में27923 pcs
3750Vrms
Tape & Reel (TR)
ACPL-077
-
-
40ns, 40ns
35kV/µs
1/0
4ns, 3ns
25MBd
10 mA
3V ~ 3.6V, 4.5V ~ 5.5V
8-SO Tall
8-SOIC (0.154', 3.90mm Width)
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 105°C
Logic
-
RFQ
HCPL-7723-300E
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8DIP GW
स्टॉक में13488 pcs
3750Vrms
Tube
HCPL-7723
-
-
22ns, 22ns
10kV/µs
1/0
8ns, 6ns
50MBd
10 mA
4.5V ~ 5.5V
8-DIP Gull Wing
8-SMD, Gull Wing
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 85°C
Logic
-
RFQ
H11L2SVM
onsemi
OPTOISO 4.17KV OPN COLL 6SMD
स्टॉक में45150 pcs
4170Vrms
Tube
H11L2
30mA
1.2V
4µs, 4µs
-
1/0
100ns, 100ns
1MHz
50 mA
3V ~ 15V
6-SMD
6-SMD, Gull Wing
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-263N-500E
Broadcom Limited
OPTOISO 3.75KV OPEN COLL 8DIP GW
स्टॉक में12581 pcs
3750Vrms
Tape & Reel (TR)
HCPL-263
10mA
1.3V
100ns, 100ns
15kV/µs
2/0
42ns, 12ns
10MBd
50 mA
4.5V ~ 5.5V
8-DIP Gull Wing
8-SMD, Gull Wing
2
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
ACSL-6410-06TE
Broadcom Limited
OPTOISO 2.5KV 4CH OPEN COLL 16SO
स्टॉक में9286 pcs
2500Vrms
Tube
ACSL-6410
15mA
1.52V
100ns, 100ns
10kV/µs
3/1
30ns, 12ns
15MBd
50 mA
3V ~ 5.5V
16-SOIC
16-SOIC (0.154", 3.90mm Width)
4
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
PS9214-A
CEL
OPTOISO 2.5KV OPN COLLECTOR 5SOP
स्टॉक में4120 pcs
2500Vrms
Bulk
-
30mA
1.65V
75ns, 75ns
10kV/µs
1/0
20ns, 10ns
10Mbps
25 mA
4.5V ~ 5.5V
5-SO
6-SOIC (0.173', 4.40mm Width), 5 Leads
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
NEPOC
RFQ
HCPL0601R2
Fairchild Semiconductor
HIGH SPEED-10MBIT/S LOGIC GATE O
स्टॉक में26615 pcs
3750Vrms
Bulk
-
50mA
1.75V (Max)
75ns, 75ns
10kV/µs
1/0
50ns, 12ns
10Mbps
50 mA
4.5V ~ 5.5V
8-SOIC
8-SOIC (0.154", 3.90mm Width)
1
Open Collector
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
ACSL-6420-50TE
Broadcom Limited
OPTOISO 2.5KV 4CH OPEN COLL 16SO
स्टॉक में8710 pcs
2500Vrms
Tape & Reel (TR)
ACSL-6420
15mA
1.52V
100ns, 100ns
10kV/µs
2/2
30ns, 12ns
15MBd
50 mA
3V ~ 5.5V
16-SOIC
16-SOIC (0.154', 3.90mm Width)
4
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 100°C
DC
-
RFQ
FOD260LSD
onsemi
OPTOISO 5KV OPEN COLLECTOR 8SMD
स्टॉक में37275 pcs
5000Vrms
Tape & Reel (TR)
FOD260
50mA
1.4V
90ns, 75ns
25kV/µs
1/0
22ns, 3ns
10Mbps
50 mA
3V ~ 5.5V
8-SMD
8-SMD, Gull Wing
1
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCPL-2630
Broadcom Limited
OPTOISO 3.75KV 2CH OPEN COL 8DIP
स्टॉक में15007 pcs
3750Vrms
Tube
HCPL-2630
15mA
1.5V
100ns, 100ns
5kV/µs
2/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
8-DIP
8-DIP (0.300", 7.62mm)
2
Open Collector, Schottky Clamped
Through Hole
-40°C ~ 85°C
DC
-
RFQ
PS9513-AX
Renesas Electronics America Inc
OPTOISO 5KV OPEN COLLECTOR 8DIP
स्टॉक में20482 pcs
5000Vrms
Tube
PS9513
25mA
1.65V
750ns, 500ns
15kV/µs
1/0
-
1Mbps
15 mA
4.5V ~ 20V
8-DIP
8-DIP (0.300", 7.62mm)
1
Open Collector
Through Hole
-40°C ~ 100°C
DC
-
RFQ
HCPL-2232-000E
Broadcom Limited
OPTOISO 3.75KV 2CH PSH PULL 8DIP
स्टॉक में10205 pcs
3750Vrms
Tube
HCPL-2232
10mA
1.5V
300ns, 300ns
10kV/µs
2/0
30ns, 7ns
5MBd
25 mA
4.5V ~ 20V
8-DIP
8-DIP (0.300", 7.62mm)
2
Push-Pull, Totem Pole
Through Hole
-40°C ~ 85°C
DC
-
RFQ
HCPL-4661-520E
Broadcom Limited
OPTOISO 5KV 2CH OPEN COL 8DIP GW
स्टॉक में8682 pcs
5000Vrms
Tape & Reel (TR)
HCPL-4661
15mA
1.5V
100ns, 100ns
15kV/µs
2/0
24ns, 10ns
10MBd
50 mA
4.5V ~ 5.5V
8-DIP Gull Wing
8-SMD, Gull Wing
2
Open Collector, Schottky Clamped
Surface Mount
-40°C ~ 85°C
DC
-
RFQ
HCNW2201
Broadcom Limited
OPTOISO 5KV PUSH PULL 8DIP
स्टॉक में12974 pcs
5000Vrms
Tube
HCNW2201
10mA
1.5V
180ns, 160ns (Typ)
1kV/µs
1/0
30ns, 7ns
5MBd
25 mA
4.5V ~ 20V
8-DIP
8-DIP (0.400", 10.16mm)
1
Push-Pull, Totem Pole
Through Hole
-40°C ~ 85°C
DC
-
RFQ
HCPL-2201-500E
Broadcom Limited
OPTOISO 3.75KV PUSH PULL 8DIP GW
स्टॉक में23467 pcs
3750Vrms
Tape & Reel (TR)
HCPL-2201
10mA
1.5V
300ns, 300ns
1kV/µs
1/0
30ns, 7ns
5MBd
25 mA
4.5V ~ 20V
8-DIP Gull Wing
8-SMD, Gull Wing
1
Push-Pull, Totem Pole
Surface Mount
-40°C ~ 85°C
DC
-
RFQ