DK-621-0439-4S
TE Connectivity Aerospace, Defense and Marine
CONN TRIAX PLUG STR SOLDER
در انبار160 pcs
-
1
Triaxial
-
-
-
-
Solder
-
-
500
DK-621
Bulk
-
-
-65°C ~ 125°C
Free Hanging (In-Line)
-
-
Plug, Female Socket
-
-
Solder
Bayonet Lock
-
-
-
RFQ
X.FL-R-SMT-1(80)
Hirose Electric Co Ltd
CONN UMC RCPT STR 50 OHM SMD
در انبار23953 pcs
Brass
1
U.FL (UMCC)
-
Phosphor Bronze
Gold
Black
Solder
Gold
-
20
X.FL
Tape & Reel (TR)
-
X.FL
-40°C ~ 90°C
Surface Mount
50Ohm
-
Receptacle, Male Pin
6 GHz
-
Solder
Snap-On
-
-
Liquid Crystal Polymer (LCP)
RFQ
MM9329-2700RA1
Murata Electronics
CONN GSC JACK STR 50 OHM SMD
در انبار3710 pcs
Copper Alloy
1
GSC
-
Copper Alloy
Silver
Silver
Solder
Gold
-
-
MM9329
Cut Tape (CT)
-
9329
-40°C ~ 90°C
Surface Mount
50Ohm
-
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
-
-
-
RFQ
MM7829-2700RJ5
Murata Electronics
LSC
در انبار4710 pcs
-
1
LSC
-
-
-
Gold
Solder
-
-
-
MM7829
Tape & Reel (TR)
-
-
-40°C ~ 85°C
Surface Mount
50Ohm
-
Receptacle, Male Pin
6 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
5-1814832-1
TE Connectivity AMP Connectors
CONN SMA JACK STR 50 OHM PCB
در انبار5370 pcs
Phosphor Bronze
1
SMA
-
Zinc Alloy
Gold
Gold
Solder
Gold
-
500
1814832
Bulk
-
ZDC, Greenpar
-65°C ~ 165°C
Through Hole
50Ohm
-
Jack, Female Socket
3 GHz
-
Solder
Threaded
500 V
-
Polytetrafluoroethylene (PTFE)
RFQ
MMCX-J-P-H-ST-SM1-K-TR
Samtec Inc.
CONN MMCX JACK STR 50 OHM SMD
در انبار13604 pcs
Beryllium Copper
1
MMCX
-
Brass
Gold
Gold
Solder
Gold
-
-
MMCX-J
Tape & Reel (TR)
-
-
-65°C ~ 125°C
Surface Mount
50Ohm
-
Jack, Female Socket
6 GHz
-
Solder
Snap-On
500 V
-
Polytetrafluoroethylene (PTFE)
RFQ
2FA1-NKRP-PCB-6
Amphenol RF
FAKRA GEN 2 PCB THROUGH HOLE RIG
در انبار12504 pcs
Brass
1
SMB, Fakra
-
Zinc Die Cast
Tin
Curry
Solder
Gold
-
100
2FA1
Tray
-
-
-65°C ~ 165°C
Through Hole, Right Angle
50Ohm
Code K
Plug, Male Pin
4 GHz
-
Solder
Locking Ramp
-
-
Polytetrafluoroethylene (PTFE)
RFQ
R222M00090
Radiall USA, Inc.
SMP-MAX / STRAIGHT MALE RECEPTAC
در انبار9702 pcs
Brass
1
SMP
-
Brass
Gold
Gold
Solder
Gold
-
100
R222M
Tape & Reel (TR)
-
-
-55°C ~ 165°C
Through Hole
50Ohm
-
Receptacle, Male Pin
6 GHz
-
Solder
Snap-On
335 V
-
Liquid Crystal Polymer (LCP); Polyetheretherketone (PEEK); Polytetrafluoroethylene (PTFE)
RFQ
901-10512-2
Amphenol RF
CONN SMA JACK R/A 50OHM EDGE MNT
در انبار4484 pcs
-
1
SMA
-
-
-
-
Solder
-
-
500
901-10
Bulk
-
-
-65°C ~ 165°C
Board Edge, End Launch; Through Hole, Right Angle
50Ohm
-
Jack, Female Socket
26.5 GHz
-
Solder
Threaded
170 V
-
-
RFQ
2FA1-NDRP-PCB-6
Amphenol RF
FAKRA GEN 2 PCB THROUGH HOLE RIG
در انبار16112 pcs
Brass
1
SMB, Fakra
-
Zinc Die Cast
Tin
Violet, Claret
Solder
Gold
-
100
2FA1
Tray
-
-
-65°C ~ 165°C
Through Hole, Right Angle
50Ohm
Code D
Plug, Male Pin
4 GHz
-
Solder
Locking Ramp
-
-
Polytetrafluoroethylene (PTFE)
RFQ
MS-180
Hirose Electric Co Ltd
CONN COAX JACK STR 50 OHM SMD
در انبار155750 pcs
Copper Alloy
1
Coaxial Switch - 2.24mm Plug Dia
-
Brass
Gold
Gold
Solder
Gold
-
100
-
Tape & Reel (TR)
-
MS-180
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
11 GHz
0.3dB
Solder
Snap-On
-
-
Liquid Crystal Polymer (LCP)
RFQ
112604RP
Amphenol RF
CONN RP-BNC JACK STR 50OHM CRIMP
در انبار4780 pcs
Brass
1
RP-BNC
Bulkhead - Front Side Nut
Brass
Nickel
Silver
Crimp
Gold
-
500
112604
Bulk
6 pcs - 1 Connector, 1 Contact, 1 Ferrule, 1 Gasket, 1 Lockwasher, 1 Nut
-
-65°C ~ 165°C
Panel Mount
50Ohm
-
Jack, Male Pin
4 GHz
0.2dB
Crimp
Bayonet Lock
500 V
Belden 8214, 9913, 9914, LMR-400
Polytetrafluoroethylene (PTFE)
RFQ
MM8030-2600RJ3
Murata Electronics
CONN SWG RCPT STR 50 OHM SMD
در انبار5390 pcs
-
1
SWG
-
-
-
Gold
Solder
-
-
100
MM8030
Tape & Reel (TR)
-
8030
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
11 GHz
0.5dB
Solder
Snap-On
250 V
-
-
RFQ
MS-156HF(20)
Hirose Electric Co Ltd
CONN COAX SWITCH RCPT STR 50OHM
در انبار112580 pcs
Beryllium Copper
1
Coaxial Switch - 4mm Plug Dia
-
Phosphor Bronze
Gold
Gold
Solder
Gold
-
100
MS-156HF
Tape & Reel (TR)
-
MS-156HF
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
0.15dB
Solder
Snap-On
-
-
Polyamide (PA), Nylon 6T
RFQ
R110427830
Radiall USA, Inc.
MMCX / STRAIGHT JACK RECEPTACLE
در انبار6981 pcs
Beryllium Copper
1
MMCX
-
Brass
Gold
Gold
Solder
Gold
-
500
R11042
Tape & Reel (TR)
-
-
-55°C ~ 155°C
Surface Mount
50Ohm
-
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
250 V
-
Polytetrafluoroethylene (PTFE)
RFQ
PL155-47
Cinch Connectivity Solutions Trompeter
CONN TRS PLUG STR SOLDER
در انبار1171 pcs
Beryllium Copper
1
TRS, Twinaxial/Triaxial
-
Brass
Nickel
Silver
Wrench Clamp
Gold
-
500
PL155
Bulk
-
150
-65°C ~ 200°C
Free Hanging (In-Line)
Non-Constant
Three Lug
Plug, Male Pin (Concentric)
500 MHz
-
Solder
Bayonet Lock
400 V
M17/176-00002
-
RFQ
D4S20Y-40MA5-A
Rosenberger
CONN HSD FAKRA PLUG R/A 100OHM
در انبار3344 pcs
Bronze
1
HSD®, Fakra, Quadraxial
-
Brass
Nickel
Black
Solder
Gold
-
25
D4S20Y
Tape & Reel (TR)
-
HSD®
-40°C ~ 105°C
Through Hole, Right Angle
100Ohm
Code A
Plug, Male Pin
2 GHz
0.10dB
Solder
Latch Lock
100 V
-
Liquid Crystal Polymer (LCP)
RFQ
5227161-9
TE Connectivity AMP Connectors
CONN BNC JACK R/A 50 OHM PCB
در انبار13661 pcs
Phosphor Bronze
1
BNC
Bulkhead - Front Side Nut
Zinc
Nickel
Black, Silver
Solder
Gold
-
500
5227161
Tube
-
-
-55°C ~ 85°C
Panel Mount, Through Hole, Right Angle
50Ohm
Board Guide, Isolated
Jack, Female Socket
4 GHz
-
Solder
Bayonet Lock
500 V
-
Polymethylpentene (PMP)
RFQ
MM8130-2600RA2
Murata Electronics
CONN SWF RCPT STR 50 OHM SMD
در انبار187870 pcs
-
1
SWF
-
-
-
Gold
Solder
-
-
-
MM8130
Tape & Reel (TR)
-
8130
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
5227161-3
TE Connectivity AMP Connectors
CONN BNC JACK R/A 50 OHM PCB
در انبار12760 pcs
Phosphor Bronze
1
BNC
Bulkhead - Front Side Nut
Zinc
Nickel
Silver, White
Solder
Gold
-
500
5227161
Bulk
-
-
-55°C ~ 85°C
Panel Mount, Through Hole, Right Angle
50Ohm
Board Guide, Isolated
Jack, Female Socket
4 GHz
-
Solder
Bayonet Lock
500 V
-
Polymethylpentene (PMP)
RFQ
MM5831-2700RK15
Murata Electronics
COAX CONN
در انبار411350 pcs
-
1
JSC
-
-
-
-
Solder
-
-
-
MM5831
Tape & Reel (TR)
-
-
-40°C ~ 85°C
Surface Mount
50Ohm
-
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
MM7829-2700RK20
Murata Electronics
LSC
در انبار4940 pcs
-
1
LSC
-
-
-
Gold
Solder
-
-
-
MM7829
Tape & Reel (TR)
-
-
-40°C ~ 85°C
Surface Mount
50Ohm
-
Receptacle, Male Pin
6 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
153100
Amphenol RF
SSMC PLUG, RG316/U CABLE
در انبار4580 pcs
Beryllium Copper
1
SSMC
-
Brass
Gold
Gold
Crimp
Gold
-
500
1531
Bag
3 pcs - 1 Connector, 1 Contact, 1 Ferrule
-
-65°C ~ 165°C
Free Hanging (In-Line)
50Ohm
-
Plug, Female Socket
10 GHz
-
Solder
Threaded
-
RG-174, RG-188, RG-188A, RG-316, LMR-100, M17/119-RG174
Polytetrafluoroethylene (PTFE)
RFQ
PL155-47
Remington Industries
TRS PL155-47 TWINAXIAL CONNECTOR
در انبار498 pcs
Beryllium Copper
1
TRS, Twinaxial/Triaxial
-
Brass
Nickel
Silver
Wrench Clamp
Gold
-
500
PL155
Bag
-
150
-65°C ~ 200°C
Free Hanging (In-Line)
Non-Constant
Three Lug
Plug, Male Pin (Concentric)
500 MHz
-
Solder
Bayonet Lock
400 V
M17/176-00002
-
RFQ
D4S20L-40MA5-E
Rosenberger
CONN HSD FAKRA PLUG R/A 100OHM
در انبار5083 pcs
Bronze
1
HSD®, Fakra, Quadraxial
-
Brass
Nickel
Green
Solder
Gold
-
25
D4S20L
Tape & Reel (TR)
-
HSD®
-40°C ~ 105°C
Through Hole, Right Angle
100Ohm
Code E
Plug, Male Pin
2 GHz
0.10dB
Solder
Latch Lock
100 V
-
Liquid Crystal Polymer (LCP)
RFQ
DK-621-0412-P
TE Connectivity Aerospace, Defense and Marine
CONN TRIAX JACK STR SOLDER
در انبار321 pcs
-
1
Triaxial
Bulkhead - Front Side Nut
-
-
-
Solder
-
-
500
DK-621
Bulk
-
-
-65°C ~ 125°C
Panel Mount
-
-
Jack, Male Pin
-
-
Solder
Threaded
-
-
-
RFQ
MM8130-2600RB8
Murata Electronics
CONN SWF RCPT STR 50 OHM SMD
در انبار207630 pcs
-
1
SWF
-
-
-
Gold
Solder
-
-
-
MM8130
Tape & Reel (TR)
-
8130
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
D4S20G-400A5-B
Rosenberger
CONN HSD FAKRA PLUG R/A 100OHM
در انبار5093 pcs
Bronze
1
HSD®, Fakra, Quadraxial
-
Brass
Nickel
White
Solder
Gold
-
25
D4S20G
Tape & Reel (TR)
-
HSD®
-40°C ~ 105°C
Through Hole, Right Angle
100Ohm
Code B
Plug, Male Pin
2 GHz
0.10dB
Solder
Latch Lock
100 V
-
Liquid Crystal Polymer (LCP)
RFQ
5227699-3
TE Connectivity AMP Connectors
CONN BNC JACK STR 50 OHM PCB
در انبار10381 pcs
Phosphor Bronze
1
BNC
-
Zinc
Nickel
Silver
Solder
Tin
-
500
5227699
Tube
-
-
-55°C ~ 85°C
Through Hole
50Ohm
-
Jack, Female Socket
4 GHz
-
Solder
Bayonet Lock
500 V
-
Polybutylene Terephthalate (PBT), Polyester
RFQ
DK-621-0433-1S
TE Connectivity Aerospace, Defense and Marine
CONN TRIAX PLUG STR SOLDER
در انبار109 pcs
-
1
Triaxial
-
-
-
-
Solder
-
-
500
DK-621
Bulk
-
-
-65°C ~ 125°C
Free Hanging (In-Line)
-
-
Plug, Female Socket
-
-
Solder
Bayonet Lock
-
-
-
RFQ
N.FL-R-SMT-1(10)
Hirose Electric Co Ltd
CONN N.FL RCPT STR 50 OHM SMD
در انبار44480 pcs
Brass
1
U.FL (UMCC)
-
Phosphor Bronze
Silver
Black
Solder
Gold
-
20
N.FL
Tape & Reel (TR)
-
N.FL
-40°C ~ 90°C
Surface Mount
50Ohm
-
Receptacle, Male Pin
6 GHz
-
Solder
Snap-On
-
-
Liquid Crystal Polymer (LCP)
RFQ
2011260003
Molex
FAKRA JACK R/A EMBSTP PKG KEY-C
در انبار24017 pcs
Brass
1
SMB, Fakra
-
Phosphor Bronze
-
Blue
Solder
Gold
-
-
201126
Tape & Reel (TR)
-
FAKRA 201126
-40°C ~ 105°C
Through Hole, Right Angle
50Ohm
Code C
Jack, Male Pin
6 GHz
-
Solder
Locking Ramp
60 V
-
Liquid Crystal Polymer (LCP), Glass Filled
RFQ
MM8430-2610RB3
Murata Electronics
CONN SWD RCPT STR 50 OHM SMD
در انبار117950 pcs
-
1
SWD
-
-
-
Silver
Solder
-
-
-
MM8430
Tape & Reel (TR)
-
8430
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
-
-
-
RFQ
222144
Amphenol RF
CONN F RCPT STR 75 OHM SOLDER
در انبار33390 pcs
Brass
1
F Type
Bulkhead - Rear Side Nut
Brass
Nickel
Silver
Solder
Tin
-
500
2221
Bag
2 pcs - 1 Connector, 1 Gasket
-
-
Panel Mount
75Ohm
-
Receptacle, Female Socket
2 GHz
-
Solder
Threaded
-
-
Polyoxymethylene (POM) Acetal, Polypropylene (PP)
RFQ
D4S20L-40MA5-B
Rosenberger
CONN HSD FAKRA PLUG R/A 100OHM
در انبار6148 pcs
Bronze
1
HSD®, Fakra, Quadraxial
-
Brass
Nickel
White
Solder
Gold
-
25
D4S20L
Tape & Reel (TR)
-
HSD®
-40°C ~ 105°C
Through Hole, Right Angle
100Ohm
Code B
Plug, Male Pin
2 GHz
0.10dB
Solder
Latch Lock
100 V
-
Liquid Crystal Polymer (LCP)
RFQ
MM8830-2600RK15
Murata Electronics
COAX CONN
در انبار424070 pcs
-
1
SWJ
-
-
-
-
Solder
-
-
-
MM8830
Tape & Reel (TR)
-
-
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
132322
Amphenol RF
CONN SMA RCPT STR 50OHM EDGE MNT
در انبار7413 pcs
Beryllium Copper
1
SMA
-
Brass
Gold
Gold
Solder
Gold
-
500
1323
Bag
-
-
-65°C ~ 165°C
Board Edge, End Launch
50Ohm
-
Receptacle, Female Socket
18 GHz
-
Solder
Threaded
-
-
Polytetrafluoroethylene (PTFE)
RFQ
5414907-1
TE Connectivity AMP Connectors
CONN BNC JACK R/A 75 OHM PCB
در انبار4493 pcs
Beryllium Copper
1
BNC
Bulkhead - Front Side Nut
Zinc
Nickel
Silver
Solder
Gold
-
500
5414907
Tube
-
-
-55°C ~ 85°C
Panel Mount, Through Hole, Right Angle
75Ohm
-
Jack, Female Socket
2 GHz
-
Solder
Bayonet Lock
500 V
-
Polymethylpentene (PMP)
RFQ
U.FL-R-SMT-1(10)
Hirose Electric Co Ltd
CONN U.FL RCPT STR 50 OHM SMD
در انبار51840 pcs
Brass
1
U.FL (UMCC)
-
Phosphor Bronze
Silver
Beige
Solder
Gold
-
30
U.FL
Tape & Reel (TR)
-
U.FL
-40°C ~ 90°C
Surface Mount
50Ohm
-
Receptacle, Male Pin
6 GHz
-
Solder
Snap-On
-
-
Liquid Crystal Polymer (LCP)
RFQ
MS-147(06)
Hirose Electric Co Ltd
CONN COAX SWITCH RCPT STR 50OHM
در انبار41625 pcs
Beryllium Copper
1
Coaxial Switch - 4.8mm Plug Dia
-
Phosphor Bronze
Gold
Gold
Solder
Gold
-
12000
MS-147
Tape & Reel (TR)
-
MS-147
-30°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
0.8dB
Solder
Push-Pull
-
-
Polyamide (PA), Nylon
RFQ
132432
Amphenol RF
CONN SMA RCPT STR 50OHM EDGE MNT
در انبار8717 pcs
Beryllium Copper
1
SMA
-
Brass
Gold
Gold
Solder
Gold
-
500
1324
Bag
-
-
-65°C ~ 165°C
Board Edge, End Launch
50Ohm
-
Receptacle, Female Socket
18 GHz
-
Solder
Threaded
-
-
Polytetrafluoroethylene (PTFE)
RFQ
MM5829-2700RK0
Murata Electronics
CONN JSC RCPT STR 50 OHM SMD
در انبار5220 pcs
-
1
JSC
-
-
-
Gold
Solder
-
-
-
MM5829
Tape & Reel (TR)
-
5829
-40°C ~ 85°C
Surface Mount
50Ohm
-
Receptacle, Male Pin
12 GHz
-
Solder
Snap-On
30 V
-
-
RFQ
MS-156NBS
Hirose Electric Co Ltd
CONN COAX SWITCH RCPT STR 50OHM
در انبار3690 pcs
Beryllium Copper
1
Coaxial Switch - 4mm Plug Dia
-
Phosphor Bronze
Gold
Gold
Solder
Gold
-
100
MS-156
Tape & Reel (TR)
-
MS-156NB
-40°C ~ 85°C
Surface Mount
50Ohm
Internal Switch
Receptacle, Female Socket
6 GHz
0.1dB
Solder
Snap-On
-
-
Polyamide (PA), Nylon 9T
RFQ
DK-621-0440-4S
TE Connectivity Aerospace, Defense and Marine
CONN TRIAX JACK STR SOLDER
در انبار141 pcs
-
1
Triaxial
Bulkhead - Front Side Nut
-
-
-
Solder
-
-
500
DK-621
Bulk
-
-
-65°C ~ 125°C
Panel Mount
-
-
Jack, Female Socket
-
-
Solder
Bayonet Lock
-
-
-
RFQ
5414459-1
TE Connectivity AMP Connectors
CONN BNC JACK R/A 75 OHM PCB
در انبار4258 pcs
Beryllium Copper
1
BNC
Bulkhead - Front Side Nut
Zinc
Nickel
Natural, Silver
Solder
Gold
-
500
5414459
Bulk
-
-
-55°C ~ 85°C
Panel Mount, Through Hole, Right Angle
75Ohm
Board Guide, Isolated
Jack, Female Socket
2 GHz
-
Solder
Bayonet Lock
500 V
-
Polymethylpentene (PMP)
RFQ
142-0711-841
Cinch Connectivity Solutions Johnson
CONN SMA JACK STR 50OHM EDGE MNT
در انبار5811 pcs
Beryllium Copper
1
SMA
-
Brass
Gold
Gold
Solder
Gold
-
500
142-0711
Bulk
-
-
-65°C ~ 165°C
Board Edge, End Launch
50Ohm
-
Jack, Female Socket
18 GHz
-
Solder
Threaded
335 V
-
Polytetrafluoroethylene (PTFE)
RFQ
MMCX-J-P-H-ST-MT1
Samtec Inc.
CONN MMCX JACK STR 50 OHM PCB
در انبار7355 pcs
Beryllium Copper
1
MMCX
-
Brass
Gold
Gold
Solder
Gold
-
-
MMCX-J
Tray
-
-
-65°C ~ 125°C
Through Hole
50Ohm
-
Jack, Female Socket
6 GHz
-
Solder
Snap-On
500 V
-
Polytetrafluoroethylene (PTFE)
RFQ
5414907-3
TE Connectivity AMP Connectors
CONN BNC JACK R/A 75 OHM PCB
در انبار3969 pcs
Beryllium Copper
1
BNC
Bulkhead - Front Side Nut
Zinc
Nickel
Silver
Solder
Gold
-
500
5414907
Bulk
-
-
-55°C ~ 85°C
Panel Mount, Through Hole, Right Angle
75Ohm
-
Jack, Female Socket
2 GHz
-
Solder
Bayonet Lock
500 V
-
Polymethylpentene (PMP)
RFQ
329852
TE Connectivity AMP Connectors
CONN MINI COAX RCPT STR 50 OHM
در انبار3790 pcs
-
1
Miniature Coaxial
Bulkhead - Front Side Nut
-
-
-
Solder
-
-
200
3298
Bulk
3 pcs - 1 Connector, 1 Lockwasher, 1 Nut
Coaxicon
-55°C ~ 85°C
Panel Mount
50Ohm
Extended Insulation
Receptacle, Female Socket
1 GHz
-
Solder Cup
Threaded
335 V
-
Polytetrafluoroethylene (PTFE)
RFQ
252129
Amphenol RF
CONN MCX RCPT R/A 50 OHM PCB
در انبار12993 pcs
Beryllium Copper
1
MCX
-
Brass
Gold
Gold
Solder
Gold
-
500
2521
Bag
-
-
-
Through Hole, Right Angle
50Ohm
-
Receptacle, Female Socket
6 GHz
0.1dB
Solder
Snap-On
225 V
-
Polytetrafluoroethylene (PTFE)
RFQ