Circular Connectors
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
S — Solder pot
X — Special, Does not fit description.
MQR
A
37
P
6
A
1
18.0
Length in Inches (Min.)
Insulation Color or Finish
Connector Series
Shell, Material & Finish
A — Aluminum, Electroless Nickel Finish
B — Brass, Sulfamate Nickel 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
Circular
Connectors
Number of Contacts**
7, 19, 37*
Wire Type
Per MIL-W-16878
Shell
P — Plug (Socket Contact)
F — Receptacle, Front Panel Mount
(Pin Contact)
R — Receptacle, Rear Panel Mount
(Pin Contact)
{
*uses twist pin contacts
** Other non-standard sizes are also available,
contact Tyco Electronics for details.
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
3
Front Panel Mount (MQR Receptacle)
Size
7
19
37
A (Hex)
.500
12.7
.625
15.88
.812
20.62
B (Min.)
.361
9.17
.477
12.16
.722
18.39
Dimensions
Ø C (Min.)
.376
9.55
.501
12.73
.751
19.07
D Thd.
3/8-32 UNEF-2A
1/2-28 UNEF-2A
3/4-20 UNEF-2A
Key
A
Hex.
D
Thd.
.400
[10.16]
B
Min.
ØC
Min.
Mounting Hole
For Front Panel Mount
Front Panel Mount (19 Position Shown)
87
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
Circular Connectors
MQR Series — Microminiature Circular Connectors
(Continued)
Rear Panel Mount (MQR Receptacle)
Size
7
19
37
A (Hex)
.500
12.7
.687
17.45
.812
20.62
B (Min.)
.422
10.72
.531
13.49
.722
18.39
Dimensions
Ø C (Min.)
.440
11.18
.564
14.33
.751
19.07
D Thd.
7/16-28 UNEF-2A
9/16-24 UNEF-2A
3/4-20 UNEF-2A
.036
±.005
Typ.
[0.91±
0.13
]
D Thd.
A
Hex.
.0433
Typ.
[1.10]
.025
Typ.
[0.64]
.050
Typ.
[1.27]
Key
.250
[6.35]
L
Min.
B
Min.
ØC
Min.
Mounting Hole
For Rear Panel Mount
Rear Panel Mount (19 Position Shown)
Circular MQR Series Quick Release Receptacle
7 Position
(Stamped Pin)
1
2
3
4
5
7
6
19 Position
(Stamped Pin)
2
1
4
8
13
17
18
19
3
7
12
16
10
16
23
29
5
37 Position
(Twist Pin)
2
1
3
4
9
15
22
28
33
34
35 36
37
Circular MQR Series Quick Release Plug
.130–.144
Typ.
[3.30–3.66]
.025
Typ.
[0.64]
.050
Typ.
[1.27]
Keyway
MQR Plug
Size
7
19
37
Dimensions
ØB
ØA
.375
.300
9.53
7.62
.400
.475
12.07
10.16
.750
.630
19.05
16.00
ØA ØB
.795
[20.19]
.0433
Typ.
[1.10]
L
Min.
Plug (19 Position Shown)
7 Position
1
7
6
5
4
2
3
7
12
16
19 Position
2
3
1
4
8
13
19
18
17
15
22
28
33
9
37 Position
3
4
2
1
5
10
16
23
29
37
36 35
34
88
Catalog 1308638
Revised 8-05
www.tycoelectronics.com
Dimensions are in inches and
millimeters unless otherwise
specified. Values in brackets
are metric equivalents.
Dimensions are shown for
reference purposes only.
Specifications subject
to change.
USA: 1-800-522-6752
Canada: 1-905-470-4425
Mexico: 01-800-733-8926
C. America: 52-55-5-729-0425
South America: 55-11-3611-1514
Hong Kong: 852-2735-1628
Japan: 81-44-844-8013
UK: 44-141-810-8967
