VE-262-MU
Vicor Corporation
DC DC CONVERTER 15V 200W
Op voorraad4630 pcs
90%
1
-
13.33A
200V
15V
-
-
-
3 kV
-
-
VE-262
Bulk
Through Hole
VE-200™ (200W)
-55°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
400V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
200 W
RFQ
VE-231-EU
Vicor Corporation
DC DC CONVERTER 12V 200W
Op voorraad3870 pcs
88%
1
-
16.67A
42V
12V
-
-
-
3 kV
-
-
VE-231
Bulk
Through Hole
VE-200™ (200W)
-10°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
60V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
200 W
RFQ
PT6429P
Texas Instruments
DC DC CONVERTER 2.5V 3A
Op voorraad4340 pcs
77%
1
-
3A
4.5V
2.5V
-
-
-
-
-
-
PT6429
Tray
Through Hole
PT6420
0°C ~ 85°C
-
5.5V
Non-Isolated PoL Module
-
ITE (Commercial)
14-SIP Module
-
-
RFQ
VI-B6W-EU
Vicor Corporation
DC DC CONVERTER 5.5V 200W
Op voorraad4690 pcs
88%
1
-
36.36A
200V
5.5V
-
-
-
3 kV
-
-
VI-B6W
Bulk
Through Hole
VI-200™ (200W)
-10°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
400V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
200 W
RFQ
MI-J21-MZ-B1
Vicor Corporation
FG BUSMOD (CFG)
Op voorraad44 pcs
-
-
-
-
-
-
-
-
-
-
-
-
MI-J21
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
DSM-5/2.65-3.3/3-D24-C
Murata Power Solutions Inc.
DC DC CONVERTER 5V 3.3V 15W
Op voorraad561 pcs
85%
2
-
2.65A, 3A
18V
5V
3.3V
-
-
1.5 kV
-
-
DSM-5/2.65
Tube
Surface Mount
DSM (15W)
-40°C ~ 100°C (With Derating)
2.00" L x 1.00" W x 0.52" H (50.8mm x 25.4mm x 13.2mm)
36V
Isolated Module
Remote On/Off, OCP, OTP, SCP, UVLO
ITE (Commercial)
9-SMD Module
-
15 W
RFQ
VE-2W2-CW
Vicor Corporation
DC DC CONVERTER 15V 100W
Op voorraad4540 pcs
90%
1
-
6.67A
18V
15V
-
-
-
3 kV
-
-
VE-2W2
Bulk
Through Hole
VE-200™ (100W)
-25°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
36V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
LTM4650AIV#PBF
Linear Technology
LTM4650A - Dual 25A or Single 50
Op voorraad4280 pcs
-
2
-
25A, 25A
4.5V
-
0.6 ~ 5.5V
-
-
-
-
-
-
Bulk
Surface Mount
µModule®
-40°C ~ 125°C
-
16V
Non-Isolated PoL Module
Adjustable Output
ITE (Commercial)
144-BLGA Module
144-LGA (16x16)
-
RFQ
IPB48007A050V-001-R
TDK-Lambda Americas Inc
DC DC CONVERTER 5V 35W
Op voorraad3780 pcs
89%
1
-
7A
36V
5V
-
-
-
1.5 kV
-
-
-
-
Surface Mount
iPB (41W)
-40°C ~ 125°C
1.20" L x 1.15" W x 0.35" H (30.5mm x 29.2mm x 8.8mm)
75V
Isolated Module
Remote On/Off, OVP
ITE (Commercial)
6-SMD Module
-
35 W
RFQ
AM80A-300L-050F40
Artesyn Embedded Power
DC DC CONVERTER 5V 240W
Op voorraad4570 pcs
84%
1
-
40A
180V
5V
-
-
-
-
-
-
-
Bulk
Through Hole
AM80A (240W)
-20°C ~ 100°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
400V
Non-Isolated PoL Module
Remote On/Off, OTP, OVP
ITE (Commercial)
Module
-
240 W
RFQ
VE-J34-CY
Vicor Corporation
DC DC CONVERTER 48V 50W
Op voorraad4390 pcs
90%
1
-
1.04A
42V
48V
-
-
-
3 kV
-
-
VE-J34
Bulk
Through Hole
VE-J00™ (50W)
-25°C ~ 100°C
2.28" L x 2.40" W x 0.50" H (57.9mm x 70.0mm x 12.7mm)
60V
Isolated Module
OCP, SCP
ITE (Commercial)
Half Brick
-
50 W
RFQ
VE-JN4-EX
Vicor Corporation
DC DC CONVERTER 48V 75W
Op voorraad147 pcs
88%
1
-
1.56A
36V
48V
-
-
-
3 kV
-
-
VE-JN4
Bulk
Through Hole
VE-J00™ (75W)
-10°C ~ 100°C
2.28' L x 2.40' W x 0.50' H (57.9mm x 70.0mm x 12.7mm)
76V
Isolated Module
OCP, SCP
ITE (Commercial)
Half Brick
-
75 W
RFQ
VE-J64-EW
Vicor Corporation
DC DC CONVERTER 48V 100W
Op voorraad5280 pcs
88%
1
-
2.08A
200V
48V
-
-
-
3 kV
-
-
VE-J64
Bulk
Through Hole
VE-J00™ (100W)
-10°C ~ 100°C
2.28' L x 2.40' W x 0.50' H (57.9mm x 70.0mm x 12.7mm)
400V
Isolated Module
OCP, SCP
ITE (Commercial)
Half Brick
-
100 W
RFQ
VI-241-12
Vicor Corporation
DC DC CONVERTER 75W
Op voorraad5240 pcs
-
-
-
-
-
-
-
-
-
-
-
-
-
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
VE-J6L-MX
Vicor Corporation
DC DC CONVERTER 28V 75W
Op voorraad5270 pcs
90%
1
-
2.68A
200V
28V
-
-
-
3 kV
-
-
VE-J6L
Bulk
Through Hole
VE-J00™ (75W)
-55°C ~ 100°C
2.28" L x 2.40" W x 0.50" H (57.9mm x 70.0mm x 12.7mm)
400V
Isolated Module
OCP, SCP
ITE (Commercial)
Half Brick
-
75 W
RFQ
VE-232-EY
Vicor Corporation
DC DC CONVERTER 15V 50W
Op voorraad5100 pcs
88%
1
-
3.33A
42V
15V
-
-
-
3 kV
-
-
VE-232
Bulk
Through Hole
VE-200™ (50W)
-10°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
60V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
50 W
RFQ
VE-273-EW
Vicor Corporation
DC DC CONVERTER 24V 100W
Op voorraad132 pcs
88%
1
-
4.17A
100V
24V
-
-
-
3 kV
-
-
VE-273
Bulk
Through Hole
VE-200™ (100W)
-10°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
375V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
PMN8118UWSR
Flex Power Modules
DC DC CONVERTER 0.7-3.6V 108W
Op voorraad2208 pcs
92.6%
1
Enable, Active Low
30A
5.5V
0.7 ~ 3.6V
-
-
-
-
CB, CSA, IEC, TUV, UL
62368-1
PMN811
Tray
Surface Mount
PMN 8000 (108W)
-40°C ~ 85°C (With Derating)
1.37" L x 0.62" W x 0.33" H (34.8mm x 15.8mm x 8.5mm)
14V
Non-Isolated PoL Module
Adjustable Output, Remote On/Off, Remote Sense
ITE (Commercial)
14-SMD Module
-
108 W
RFQ
LW015D981
ABB Power Electronics Inc.
DC DC CONVERTER 2V 15W
Op voorraad4960 pcs
69%
1
Enable, Active Low
3A
36V
2V
-
-
-
1.5 kV
-
-
-
Bulk
Through Hole
LW015 (15W)
-40°C ~ 105°C
2.00' L x 1.00' W x 0.40' H (50.8mm x 25.4mm x 10.2mm)
75V
Isolated Module
Remote On/Off, OCP, OVP, UVLO
ITE (Commercial)
6-DIP Module
-
15 W
RFQ
PSR53-7
ABB Power Electronics Inc.
DC DC CONVERTER
Op voorraad52 pcs
-
-
-
-
-
-
-
-
-
-
-
-
-
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
CCN-1212SF
TDK-Lambda Americas Inc
DC DC CONVERTER 12V 6W
Op voorraad4170 pcs
85%
1
-
500mA
9V
12V
-
-
-
500 V
-
-
-
Bulk
Through Hole
CCN (6W)
-20°C ~ 70°C (With Derating)
1.61" L x 1.02" W x 0.33" H (40.9mm x 25.9mm x 8.4mm)
18V
Isolated Module
OCP
ITE (Commercial)
7-DIP Module
-
6 W
RFQ
IAD012YHH-2
Bel Power Solutions
DC DC CONVERTER +/-12V 12W
Op voorraad4380 pcs
82%
2
Enable, Active High
500mA, 500mA
18V
12V
-12V
-
-
1.5 kV
-
-
-
Bulk
Through Hole
IAD (12W)
-40°C ~ 85°C
2.00" L x 1.00" W x 0.42" H (50.8mm x 25.4mm x 10.7mm)
36V
Isolated Module
Remote On/Off, OCP, OTP, SCP
ITE (Commercial)
6-DIP Module
-
12 W
RFQ
X10-48D12
TDK-Lambda Americas Inc
DC DC CONVERTER +/-12V 10W
Op voorraad4220 pcs
82%
2
-
420mA, 420mA
36V
12V
-12V
-
-
1.5 kV
-
-
-
-
Through Hole
X10 (10W)
-40°C ~ 105°C (With Derating)
2.00" L x 1.00" W x 0.38" H (50.8mm x 25.4mm x 9.7mm)
75V
Isolated Module
Remote On/Off, OVP, SCP
ITE (Commercial)
6-DIP Module
-
10 W
RFQ
VI-B10-CU
Vicor Corporation
DC DC CONVERTER 5V 200W
Op voorraad4030 pcs
90%
1
-
40A
21V
5V
-
-
-
3 kV
-
-
VI-B10
Bulk
Through Hole
VI-200™ (200W)
-25°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
32V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
200 W
RFQ
VE-234-CW
Vicor Corporation
DC DC CONVERTER 48V 100W
Op voorraad3830 pcs
90%
1
-
2.08A
42V
48V
-
-
-
3 kV
-
-
VE-234
Bulk
Through Hole
VE-200™ (100W)
-25°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
60V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
PTH12060LAZ
Artesyn Embedded Power
DC DC CONVERTER 0.8-1.8V 55W
Op voorraad2795 pcs
88%
1
-
10A
10.8V
0.8 ~ 1.8V
-
-
-
-
-
-
PTH12060
Tray
Surface Mount
PTH12060 (55W)
-40°C ~ 85°C
1.00" L x 0.62" W x 0.35" H (25.3mm x 15.8mm x 9.0mm)
13.2V
Non-Isolated PoL Module
Remote On/Off, SCP, UVLO
ITE (Commercial)
10-SMD Module
-
55 W
RFQ
VI-B73-CW
Vicor Corporation
DC DC CONVERTER 24V 100W
Op voorraad121 pcs
90%
1
-
4.17A
100V
24V
-
-
-
3 kV
-
-
VI-B73
Bulk
Through Hole
VI-200™ (100W)
-25°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
375V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
CXA20-48S3V3
Artesyn Embedded Power
DC DC CONVERTER 3.3V 20W
Op voorraad4410 pcs
80%
1
-
6A
18V
3.3V
-
-
-
1.5 kV
-
-
-
-
Through Hole
CXA20 (20W)
-40°C ~ 60°C
2.00' L x 1.60' W x 0.41' H (50.8mm x 40.6mm x 10.5mm)
75V
Isolated Module
Remote On/Off, OTP, OVP, SCP, UVLO
ITE (Commercial)
8-DIP Module, 7 Leads
-
20 W
RFQ
VE-254-IW
Vicor Corporation
DC DC CONVERTER 48V 100W
Op voorraad5010 pcs
90%
1
-
2.08A
100V
48V
-
-
-
3 kV
-
-
VE-254
Bulk
Through Hole
VE-200™ (100W)
-40°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
200V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
VE-J34-IZ
Vicor Corporation
DC DC CONVERTER 48V 25W
Op voorraad4620 pcs
90%
1
-
521mA
42V
48V
-
-
-
3 kV
-
-
VE-J34
Bulk
Through Hole
VE-J00™ (25W)
-40°C ~ 100°C
2.28" L x 2.40" W x 0.50" H (57.9mm x 70.0mm x 12.7mm)
60V
Isolated Module
OCP, SCP
ITE (Commercial)
Half Brick
-
25 W
RFQ
VE-2T2-IV
Vicor Corporation
DC DC CONVERTER 15V 150W
Op voorraad4020 pcs
90%
1
-
10A
66V
15V
-
-
-
3 kV
-
-
VE-2T2
Bulk
Through Hole
VE-200™ (150W)
-40°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
160V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
150 W
RFQ
VI-B5L-CU-02
Vicor Corporation
VI-B5L-CU-02 150V/28V 200WIP
Op voorraad103 pcs
-
-
-
-
-
-
-
-
-
-
-
-
VI-B5L
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
LW020B871
ABB Power Electronics Inc.
DC DC CONVERTER 12V 20W
Op voorraad4190 pcs
85%
1
Enable, Active Low
1.33A
36V
12V
-
-
-
1.5 kV
-
-
-
Bulk
Through Hole
LW020 (20W)
-40°C ~ 110°C
2.00" L x 2.00" W x 0.39" H (50.8mm x 50.8mm x 9.9mm)
75V
Isolated Module
Remote On/Off, OCP, OVP
ITE (Commercial)
8-DIP Module
-
20 W
RFQ
VE-2N0-MX
Vicor Corporation
DC DC CONVERTER 5V 75W
Op voorraad3930 pcs
90%
1
-
15A
36V
5V
-
-
-
3 kV
-
-
VE-2N0
Bulk
Through Hole
VE-200™ (75W)
-55°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
76V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
75 W
RFQ
VI-BT2-EV
Vicor Corporation
DC DC CONVERTER 15V 150W
Op voorraad94 pcs
88%
1
-
3.33A
66V
15V
-
-
-
3 kV
-
-
VI-BT2
Bulk
Through Hole
VI-200™ (150W)
-10°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
160V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
150 W
RFQ
HES100ZE-ANT
Bel Power Solutions
DC DC CONVERTER 3.3V 150W
Op voorraad3860 pcs
83%
1
Enable, Active Low
30A
36V
3.3V
-
-
-
1.5 kV
-
-
-
Bulk
Through Hole
HES (150W)
-40°C ~ 100°C
2.40" L x 2.28" W x 0.50" H (61.0mm x 57.9mm x 12.7mm)
72V
Isolated Module
Remote On/Off, OCP, OTP, OVP, SCP, UVLO
ITE (Commercial)
9-DIP Module
-
150 W
RFQ
VI-BWL-CW
Vicor Corporation
DC DC CONVERTER 28V 100W
Op voorraad4970 pcs
90%
1
-
3.57A
18V
28V
-
-
-
3 kV
-
-
VI-BWL
Bulk
Through Hole
VI-200™ (100W)
-25°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
36V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
VE-2T3-EV
Vicor Corporation
DC DC CONVERTER 24V 150W
Op voorraad4620 pcs
88%
1
-
6.25A
66V
24V
-
-
-
3 kV
-
-
VE-2T3
Bulk
Through Hole
VE-200™ (150W)
-10°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
160V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
150 W
RFQ
PME5218TP
Flex Power Modules
DC DC CONVERTER 0.8-3.6V 22W
Op voorraad3317 pcs
94.8%
1
Enable, Active Low
6A
4.5V
0.8 ~ 3.6V
-
-
-
-
CB, CSA, IEC, TUV, UL
62368-1
PME521
Tray
Through Hole
PME 5000
-40°C ~ 85°C (With Derating)
0.87" L x 0.49" W x 0.34" H (22.1mm x 12.6mm x 8.5mm)
5.5V
Non-Isolated PoL Module
Adjustable Output, Remote On/Off
ITE (Commercial)
6-DIP Module
-
22 W
RFQ
CW025CL-M
ABB Power Electronics Inc.
DC DC CONVERTER +/-15V 25W
Op voorraad4100 pcs
82%
2
Enable, Active High
830mA, 830mA
36V
15V
-15V
-
-
500 V
-
-
-
Bulk
Through Hole
CW025 (25W)
-40°C ~ 100°C
2.80' L x 2.40' W x 0.50' H (71.1mm x 61.0mm x 12.7mm)
75V
Isolated Module
Remote On/Off, OCP, OVP
ITE (Commercial)
7-DIP Module
-
25 W
RFQ
V375A28C600BS3
Vicor Corporation
DC DC CONVERTER 28V 600W
Op voorraad3950 pcs
87.8%
1
-
21.43A
250V
28V
-
-
-
3 kV
-
-
V375A28C600
Bulk
Through Hole
Maxi (600W)
-20°C ~ 100°C
4.60' L x 2.20' W x 0.54' H (116.8mm x 55.9mm x 13.7mm)
425V
Isolated Module
OVP, UVLO
ITE (Commercial)
Full Brick
-
600 W
RFQ
VE-200-MX
Vicor Corporation
DC DC CONVERTER 5V 75W
Op voorraad3990 pcs
90%
1
-
15A
10V
5V
-
-
-
3 kV
-
-
VE-200
Bulk
Through Hole
VE-200™ (75W)
-55°C ~ 85°C
4.60" L x 2.40" W x 0.50" H (116.8mm x 61.0mm x 12.7mm)
20V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
75 W
RFQ
VE-211-CX
Vicor Corporation
DC DC CONVERTER 12V 75W
Op voorraad3980 pcs
90%
1
-
6.25A
21V
12V
-
-
-
3 kV
-
-
VE-211
Bulk
Through Hole
VE-200™ (75W)
-25°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
32V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
75 W
RFQ
VE-211-MY
Vicor Corporation
DC DC CONVERTER 12V 50W
Op voorraad4880 pcs
90%
1
-
4.17A
21V
12V
-
-
-
3 kV
-
-
VE-211
Bulk
Through Hole
VE-200™ (50W)
-55°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
32V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
50 W
RFQ
OBS025ZH
Bel Power Solutions
DC DC CONVERTER 12V 25W
Op voorraad4010 pcs
88%
1
Enable, Active High
2.1A
34V
12V
-
-
-
1.5 kV
-
-
-
Bulk
Through Hole
OBS (25W)
-40°C ~ 100°C
2.00' L x 2.00' W x 0.42' H (50.8mm x 50.8mm x 10.7mm)
75V
Isolated Module
Remote On/Off, OCP, OVP, SCP
ITE (Commercial)
8-DIP Module
-
25 W
RFQ
VI-B64-02
Vicor Corporation
VI-B64-02 300V/32V 200W S
Op voorraad89 pcs
-
-
-
-
-
-
-
-
-
-
-
-
VI-B64
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
MI-B20-MX
Vicor Corporation
DC DC CONVERTER 75W
Op voorraad4090 pcs
-
-
-
-
-
-
-
-
-
-
-
-
MI-B20
Bulk
-
*
-
-
-
-
-
-
-
-
-
RFQ
VE-230-MV
Vicor Corporation
DC DC CONVERTER 5V 150W
Op voorraad3980 pcs
90%
1
-
30A
42V
5V
-
-
-
3 kV
-
-
VE-230
Bulk
Through Hole
VE-200™ (150W)
-55°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
60V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
150 W
RFQ
VE-250-MW
Vicor Corporation
DC DC CONVERTER 5V 100W
Op voorraad38 pcs
90%
1
-
20A
100V
5V
-
-
-
3 kV
-
-
VE-250
Bulk
Through Hole
VE-200™ (100W)
-55°C ~ 85°C
4.60' L x 2.40' W x 0.50' H (116.8mm x 61.0mm x 12.7mm)
200V
Isolated Module
OCP, OTP, OVP, SCP
ITE (Commercial)
Full Brick
-
100 W
RFQ
VE-J31-MW
Vicor Corporation
DC DC CONVERTER 12V 100W
Op voorraad3740 pcs
90%
1
-
8.33A
42V
12V
-
-
-
3 kV
-
-
VE-J31
Bulk
Through Hole
VE-J00™ (100W)
-55°C ~ 100°C
2.28" L x 2.40" W x 0.50" H (57.9mm x 70.0mm x 12.7mm)
60V
Isolated Module
OCP, SCP
ITE (Commercial)
Half Brick
-
100 W
RFQ