With PC Tails • MIL-DTL-38999 Series III Type
257-455
Box Mount Quadrax Connector
Twinax and
Quadrax
Connectors
Basic Number
Finish
M
- Electroless Nickel
NF
- O.D. Cadmium
over Nickel
Contact Style
P
- Pin, PC Tail Quadrax (100 Ohm)
S
- Socket, PC Tail Quadrax (100 Ohm)
C
- Pin, PC Tail Quadrax (150 Ohm)
D
- Socket, PC Tail Quadrax (150 Ohm)
Alternate Key
Position
A, B, C, D, E
(N = Normal)
Shell Size
09
21
23
25
257 - 455
M
21
G
75
P
N
G
= Ground Plane Option
(use “–” for none)
Insert Arrangement
(See Opposite Page)
.235 Max
.843 Max.
.102
.075
.175
.125 Typ.
2X D
Clinch Nut
Ref.
Potting Compound
A Thread
E
B SQ.
2x C
BSC
D
A
C
B
4x Chamfered
or Rounded
Pin contact
Shown for
Reference Only
.520 Max
Fully Mated
Indicator
Band - Red
.111 Typ
See Detail A
On Adjacent Pg.
4x M3X0.5-6G
.005
M
Clinch Nut
4 Places
.189
Typ
PCB Standoff
4x M3X0.5-6G Holes
.156 Deep @ 90° Apart
Mates With
ø .219 / .217
Mates With
ø .026 / .024
.219
ø .217
PCB Flex Print also Available. Consult Factory.
4x ø .026
.024
Pin
Socket
APPLICATION NOTES
1.
2.
3.
Assembly identified with Glenair’s, part number and date code
Insert arrangements IAW MIL-STD-1560 and Figure I
Glenair 257-455 receptacle connector is designed to mate
with any QPL manufacturers MIL-C-38999 series III plug
connector having the same insert arrangement, polarization
and the same quadrax interface dimensions shown.
PC contacts supplied with connector (installed) and are not
sold seperately.
5.
Material/finish:
Shell assembly, jam nut, lock ring—Al alloy/see Table II
Contacts—copper alloy/gold plate
Bayonet pins—CRES/passivate
0-rings, interfacial & peripheral seals—silicone/N.A.
Insulators—high grade rigid dielectric/ N.A.
Metric Dimensions (mm) are indicated in parentheses
4.
6.
© 2010 Glenair, Inc.
www.glenair.com
CAGE CODE 06324
Printed in U.S.A.
E-Mail: sales@glenair.com
GLENAIR, INC.
•
1211 AIR WAY
•
GLENDALE, CA 91201-2497
•
818-247-6000
•
FAX 818-500-9912
E-12
With PC Tails • MIL-DTL-38999 Series III Type
Orientation
Key / Keyway
45°
Orientation
Key / Keyway
45°
ø .039 Min.
4x Equally
Spaced
1
4
3
2
.250 (CL of Ground Legs)
1
2
3
4
C
BSC
4x .130 Min.
ø .250 BC
C
BSC
.021 x .025
.111
Typ
Rear View of Differential Quadrax
ø .030 Min
4x
.111
Typ
ø E Min.
Back Panel Mounting
Recommended PCB Layout
A
A
G
B
D
A
E
F
B
H
F
D
C
C
E
D
C
B
Arrangement 09-5
Arrangement 21-75
Arrangement 23-06
Arrangement 25-08
See Quadrax Contact Information on D-24
TABLE I
CA
DA
NA
AA
BA
Shell
Size
09
21
23
25
A Thread
.6250-.1P-.3L-TS-2A
1.3750 -.1P-.3L-TS-2A
1.5000 -.1P-.3L-TS-2A
1.6250 -.1P-.3L-TS-2A
B Sq.
1.031
1.007
1.575
1.545
1.701
1.677
1.823
1.799
C Bsc.
.719
1.250
1.375
1.500
D Bsc.
.594
1.221
1.360
1.475
øE
Min.
.656
1.421
1.546
1.672
Figure 1
Master Keyway Position
Face View Shown
Insert Arrangement Does
Not Rotate With Master Keyway
© 2010 Glenair, Inc.
www.glenair.com
CAGE CODE 06324
Printed in U.S.A.
E-Mail: sales@glenair.com
GLENAIR, INC.
•
1211 AIR WAY
•
GLENDALE, CA 91201-2497
•
818-247-6000
•
FAX 818-500-9912
E-13
Twinax and
Quadrax
Connectors
257-455
Box Mount Quadrax Connector
E
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