Catalog 1308638 Dimensions are in inches and Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-3611-1514
Revised 8-05 millimeters unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628
specified. Values in brackets Specifications subject Mexico: 01-800-733-8926 Japan: 81-44-844-8013
www.tycoelectronics.com are metric equivalents. to change. C. America: 52-55-5-729-0425 UK: 44-141-810-8967
Circular Connectors
87
Circular
Connectors
3
MQR Series — Microminiature Circular Connectors
MQR stands for MICRODOT
Quick Release. This line of
circular quick disconnect
connectors has metal shells
with push-pull couplings
which provide a positive
connection for rugged
environmental use. The
MQR series is specified for
cable-to-cable and cable-
to-panel applications.
The plug connector side
contains socket contacts.
The receptacle connector
side contains pin contacts.
Because the pin contact is
“active” or “live”, the pins
require the physical protec-
tion that the receptacle side
offers. (Similar to a “protect-
ed” or “shrouded” header.)
While there is no optional
hardware for the MQR
series, the receptacles
incorporate a standard jam
nut to tighten the connector
down to the board or panel.
MQR connectors are
manufactured to the per-
formance specifications of
MIL-DTL-83513.
How to Specify/
Ordering Code
MQR A 37 P 6 A 1 18.0
Length in Inches (Min.)
X — Special, Does not fit description.
Insulation Color or Finish
1 — All white 6 — Bare (unfinished)
2— All yellow 7 — Color coded per MIL-STD-681, System I
3 — All gray 9 — 10 Solid color repeating (starts with black)
4 — Gold plated
5 — Tin dipped gold plated
Wire Type
A — Type E, 7 strand
B — Type ET, 7 strand
C — Type E, 19 strand
D — Type ET, 19 strand
F — 7 strand per MIL-W-22759/11
(28 AWG only)
G — 19 strand per MIL-C-22759/11
26 AWG, 24 AWG
L — Copper, solid
Q — Stranded per MIL-W-22759/33
Wire Size
4 — 24 AWG 5 — 25 AWG 6 — 26 AWG 8 — 28 AWG 0 — 30 AWG
Per MIL-W-16878
{
Connector Series
Shell, Material &Finish
A — Aluminum, Electroless Nickel Finish
B — Brass, Sulfamate Nickel Finish
Number of Contacts**
7, 19, 37*
Shell
P — Plug (Socket Contact)
F—Receptacle, Front Panel Mount
(Pin Contact)
R—Receptacle, Rear Panel Mount
(Pin Contact)
S— Solder pot
*uses twist pin contacts
** Other non-standard sizes are also available,
contact Tyco Electronics for details.
Front Panel Mount (MQR Receptacle)
Dimensions
Size A(Hex) B(Min.) Ø C (Min.) D Thd.
7.500 .361 .376 3/8-32 UNEF-2A
12.7 9.17 9.55
19 .625 .477 .501 1/2-28 UNEF-2A
15.88 12.16 12.73
37 .812 .722 .751 3/4-20 UNEF-2A
20.62 18.39 19.07
A
Hex.
.400
[10.16] B
Min.
Ø C
Min.
Key
DThd.
Mounting Hole
For Front Panel Mount
Front Panel Mount (19 Position Shown)
Catalog 1308638 Dimensions are in inches and Dimensions are shown for USA: 1-800-522-6752 South America: 55-11-3611-1514
Revised 8-05 millimeters unless otherwise reference purposes only. Canada: 1-905-470-4425 Hong Kong: 852-2735-1628
specified. Values in brackets Specifications subject Mexico: 01-800-733-8926 Japan: 81-44-844-8013
www.tycoelectronics.com are metric equivalents. to change. C. America: 52-55-5-729-0425 UK: 44-141-810-8967
Circular Connectors
88
MQR Series — Microminiature Circular Connectors (Continued)
.795
[20.19]
L
Min.
Ø A Ø B
.0433
[1.10] Typ.
.050
[1.27]Typ.
Keyway
.025
[0.64]Typ.
.130–.144
[3.30–3.66] Typ.
7 Position
1
7
6
5
2
3
4
19 Position
2
31
17
18
4
13
7
16 19
12 8
37 Position
22
15 94
283337
16
10
5
1
23
29
34
3536
23
Circular MQR Series Quick Release Plug
7 Position
(Stamped Pin)
1
2
3
4
7
6
5
19 Position
(Stamped Pin)
2
13
19
18
7
16
4
1317
812
37 Position
(Twist Pin)
16
10 51
232934
22
15
9
4
28
33
37
3635
32
Circular MQR Series Quick Release Receptacle
A
Hex.
.250
[6.35]
L
Min.
.0433
[1.10] Typ.
.050
[1.27]Typ.
.025
[0.64]Typ.
.036
±.005
[0.91±
0.13
]Typ.
B
Min.
ØC
Min.
Key
DThd.
Mounting Hole
For Rear Panel Mount
Rear Panel Mount (19 Position Shown)
Rear Panel Mount (MQR Receptacle)
Dimensions
Size A(Hex) B (Min.) Ø C (Min.) D Thd.
7.500 .422 .440 7/16-28 UNEF-2A
12.7 10.72 11.18
19.687 .531 .564 9/16-24 UNEF-2A
17.45 13.49 14.33
37 .812 .722 .751 3/4-20 UNEF-2A
20.62 18.39 19.07
Plug (19 Position Shown)
MQR Plug
Dimensions
Size Ø A Ø B
7.375 .300
9.53 7.62
19 .475 .400
12.07 10.16
37 .750 .630
19.05 16.00
