Developed and produced by Packard-Hughes Interconnect
(PHI), the MIL-C-28876 Fiber Optic Connector features low
optical insertion loss, repeatability, exceptional strain relief,
and reliability in harsh environments. This connector is used
extensively by the United States Navy in shipboard applica-
tion and has been on the United States Government's
Qualified Products List since 1983.
• Available in 2, 4, 6, 8, and 31 channel configurations
• Single and multi-mode capability
• Full environmental sealing
• Utilizes field-proven MIL-T-29504 Termini
• Field maintainable
Fiber Optic Connectors
MIL-C-28876 Fiber
Optic Connectors
QPL Military and Commercial
Equivalent Available
page 1
Connector Perfor mance
Durability 500 cycles per EIA-455-21
Vibration Per MIL-STD-1344, Method 2005, Condition II & VI
Mechanical Shock Per MIL-S-901, Grade A Medium Weight
Thermal Cycling -62°C to +70°C per MIL-STD-1344, Method 1003
Corrosion Resistance 500 hour salt spray per MIL-STD-1344, Method 1001
Ozone Exposure 150 PPM/2 hours per MIL-STD-1344, Method 1007
Humidity 240 hours per MIL-STD-1344, Method 1002
Fluid Immersion Per MIL-STD-1344, Method 1016
Crush Resistance 225 pounds per MIL-STD-1344, Method 2008.1
Maintenance Aging Per MIL-STD-1344, Method 2002
Terminus Retention Force 22 pounds minimum per MIL-STD-1344, Method 2007
Insert Retention Axial 100 PSI minimum per MIL-STD-1344, Method 2010
Cable Pull Out Force 162 Pounds minimum per MIL-STD-1344, Method 2009
Cable Seal Flexing 100 cycles per MIL-STD-1344, Method 2017
Impact Per MIL-STD-1344, Method 2015
Flammability Per MIL-STD-1344, Method 1012
Operating Temperature Range -54°C to +65°C
Storage Temperature Range -62°C to +71°C
MIL-C-28876 Fiber Optic Connectors
STANDARD MATERIALS AND PLATING
page 2
Description Materials Finishes
Insert Aluminum Alloy Anodize
Boot, Strain Relief Fluorosilicone None
Connector and Backshell Housings Aluminum Alloy Cadmium Plate (Olive Drab) Over Electroless Nickel
CONNECTOR: MIL-SPEC ORDERING NOMENCLATURE
M28876/ 7 B 1 2 P 1 *
OPTICAL PERFORMANCE DATA
Consult factory for non-standard and custom specifications. The average insertion loss is .5dB for ceramic ter mini. These
figures are derived from actual field measurements taken from thousands of mated pairs of termini across our line of multi-
channel connectors. The source launch wavelengths were 850 and 1300 nanometers.
See
Table
I
See
Table
II
See
Table
III
See
Table
IV
Terminus
Cavity
Designator
P= Pin
S= Socket
Keying
Position
Designator
1thru 6
When ordering a /1, /6, or /11
connector type and DO NOT
require insert retention nut
and pressure sleeve (to
expose accessory thread for
alternate backshell addition),
add N to the end of part
number nomenclature
(e.g.: M28876/6B1P1N)
Table I
Connector Type Strain Relief Slash Sheet Designator
Wall Mount Receptacle None 1
Wall Mount Receptacle Straight 2
Wall Mount Receptacle 45° 3
Wall Mount Receptacle 90° 4
In-Line Receptacle Straight 5
Plug None 6
Plug Straight 7
Plug 45° 8
Plug 90° 9
Jam Nut Receptacle None 11
Jam Nut Receptacle Straight 12
Jam Nut Receptacle 45° 13
Jam Nut Receptacle 90° 14
Table II
Shell Size Shell Size Designator
11 A
13 B
15 C
23 F
Table III
# of Cavities Shell Size Insert Designator
211 1
413 1
615 2
815 1
31 23 1
Table IV
Backshell Maximum Cable Diameter Listed Inches (mm)
Number Shell Size
Designator 11 13 15 23
1 .250 (6.35) .285 (7.24) .515 (13.08) .866 (22.00)
2 .346 (8.79) .256 (6.50) 1.000 (25.40)
3 .375 (9.53) .600 (15.3)
(Omit if no strain relief.)
MIL-C-28876 Fiber Optic Connectors
page 3
CONNECTOR: COMMERCIAL EQUIVALENT ORDERING NOMENCLATURE
1145846— B 04 2 P 1 S
See
Table
I
See
Table
II
See
Table
III
See
Table
IV
P= Pin
S= Socket 1thru 6
Assembly
Configuration
Table I: Assembly Configuration
PHI Number Connector Type Strain Relief
4565141 Wall Mount Receptacle None
1145840 Wall Mount Receptacle Straight
1147630 Wall Mount Receptacle 45°
1147640 Wall Mount Receptacle 90°
1145841 In-Line Receptacle Straight
4565143 Plug None
1145846 Plug Straight
1147636 Plug 45°
1147646 Plug 90°
4565142 Jam Nut Receptacle None
1145844 Jam Nut Receptacle Straight
1147634 Jam Nut Receptacle 45°
1147644 Jam Nut Receptacle 90°
4567626* Wall Mount Receptacle Noneª
4567627* Jam Nut Receptacle Noneª
6567628* Plug Noneª
*Part Numbers end with “H” in place of “S”.
ªNo strain relief, no insert retention nut and pressure sleeve, to expose
accessories thread for backshell addition.
Table II: Shell Size Designator
Shell Size Number of
Designator Shell Size Terminus Cavities
A11 2
B13 4
C15 6 or 8
F23 31 or 18
Table III: Number of Terminus Cavities
M28876 Insert
Arrangement
# of Cavities Shell Size Equivalent
02 11 1
04 13 1
06 15 2
08 15 1
31 23 1
18 23 2
Table IV: Backshell Number Designator
Backshell Maximum Cable Diameter Listed Inches (mm)
Number Shell Size
Designator 11 13 15 23
1 .250 (6.35) .285 (7.24) .515 (13.08) .866 (22.00)
2 .346 (8.79) .256 (6.50) 1.000 (25.40)
3 .375 (9.53) .600 (15.3)
(Omit if no strain relief.)
Shell Size
Designator
Number of
Terminus
Cavities
Backshell
Number
Designator Terminus
Style Keying
Position
All Numbers
End with “S”
*Except as
shown below
MIL-SPEC Equivalent To
Packard-Hughes Interconnect
MIL-SPEC PHI
Number Number
M28876/1 4565141S
M28876/2 1145840S
M28876/3 1147630S
M28876/4 1147640S
M28876/5 1145841S
M28876/6 4564143S
M28876/7 1145846S
M28876/8 1147636S
M28876/9 1147646S
M28876/11 4565142S
M28876/12 1145844S
M28876/13 1147634S
M28876/14 1147644S
MIL-C-28876 Fiber Optic Connectors
page 4
PLUG CONNECTOR
Connector ØA ØB C D E F G
Size MAX MAX MAX MAX MAX MAX MAX
11 1.028 .960 5.960 6.090 3.540 4.190 4.250
13 1.141 1.085 5.960 6.160 3.580 4.190 4.250
15 1.263 1.255 5.960 6.440 3.850 4.440 4.500
23 1.703 1.760 5.960 7.350 5.000 4.550 5.000
Dimension Table, Plug Connector
ØA Max ØB Max
ØB
Max
MIL-C-28876 Fiber Optic Connectors
page 5
PLUG CONNECTOR
MIL-C-28876 Fiber Optic Connectors
page 6
WALL MOUNT RECEPTACLE
Connector ØA ØB C ØD E F G H J K
Size MAX MAX MAX MAX MAX MAX MAX
11 .750 .960 .750 .130 1.043 6.150 6.150 3.540 4.250 4.250
.115 1.00
13 .875 1.085 .843 .130 1.158 6.150 6.250 3.580 4.250 4.250
.115 1.116
15 1.062 1.255 .968 .130 1.278 6.150 6.500 3.850 4.500 4.500
.115 1.236
23 1.500 1.703 1.281 .130 1.738 6.150 7.500 5.000 5.000 5.000
.115 1.698
Dimension Table, Wall Mount Receptacle
ØB Max
ØA Max
MIL-C-28876 Fiber Optic Connectors
page 7
WALL MOUNT RECEPTACLE
Dimension Table, Panel Cutout,
Wall Mount Receptacle
Recommended Panel
Cutout (Wall Mtg.)
Shell Size ØX ±.005 Y ±.005
11 .812 .750
13 .937 .843
15 1.125 .968
23 1.562 1.281
MIL-C-28876 Fiber Optic Connectors
page 8
JAM NUT RECEPTACLE
Connector ØA ØB ØC D E F G H J K
Size MAX MAX HEX THREAD MAX MAX MAX MAX MAX
11 .750 .960 1.368 1.079 .875-20 6.150 6.150 3.540 4.250 4.250
1.345 1.045 UNEF
13 .875 1.085 1.508 1.205 1.000-20 6.150 6.220 3.580 4.250 4.250
1.485 1.171 UNEF
15 1.062 1.255 1.608 1.392 1.875-18 6.150 6.500 3.850 4.500 4.500
1.585 1.358 UNEF
23 1.500 1.750 2.118 1.829 1.625-18 6.150 7.500 5.000 5.000 5.000
2.095 1.795 UNEF
Dimension Table, Jam Nut Mounting Receptacle
MIL-C-28876 Fiber Optic Connectors
page 9
JAM NUT RECEPTACLE
Dimension Table, Panel Cutout,
Jam Nut Receptacle
Recommended Panel
Cutout (Wall Mtg.)
Shell Size ØX ±.005 Y ±.005
11 .885 .848
13 1.010 .973
15 1.198 1.160
23 1.635 1.598
MIL-C-28876/13
1147634
MIL-C-28876/14
1147644
MIL-C-28876 Fiber Optic Connectors
page 10
DUST COVERS: MIL-SPEC ORDERING NOMENCLATURE
M28876/ 10 C C W
See
Table
I
See
Table
II
See
Table
III
See
Table
IV
Assembly
Configuration
(Slash Sheet)
Table I: Assembly Configuration
Slash Sheet Connector Type
/10 Plug
/15 Receptacle
Table II: Shell Size Designator
Shell Size Designator Shell Size
A11
B13
C15
D23
Shell Size
Designator Attachment
Designator Material and
Finish Designator
Table III: Attachment Designator
Attachment Designator Type of Attachment
CWire Rope w/Fastener
DWire Rope w/Ring
EWithout Rope
Table IV: Material and Finish Designator
Material and Finish Type of Material
Designator and Finish
WAluminum with Olive Drab
Cadmium Plating
DStainless Steel with Black
Cadmium Plating
MIL-C-28876 Fiber Optic Connectors
page 11
DUST COVERS: COMMERCIAL EQUIVALENT ORDERING NOMENCLATURE
4565071– C C W S
See
Table
I
See
Table
II
See
Table
III
See
Table
IV
Assembly
Configuration
(Slash Sheet)
Table I: Assembly Configuration
PHI Number Fits Connector Type
4565071 Plug
4565070 Receptacle
Table II: Shell Size Designator
Shell Size Designator Shell Size
A11
B13
C15
D23
Shell Size
Designator Attachment
Designator Material and
Finish Designator
Table III: Attachment Designator
Attachment Designator Type of Attachment
CWire Rope w/Fastener
DWire Rope w/Ring
EWithout Rope or Chain
Table IV: Material and Finish Designator
Material and Finish Type of Material
Designator and Finish
WAluminum with Olive Drab
Cadmium Plating
DStainless Steel with Black
Cadmium Plating
All Numbers
End with “S”
MIL SPEC Equivalent to PHI
MIL-SPEC Number PHI Number
M28876/10 4565071S
M28876/15 4565070S
MIL-C-28876 Fiber Optic Connectors
INSERT ARRANGEMENTS
page 12
MIL-C-28876 Fiber Optic Connectors
page 13
0 — — — —
1 95 141 208 236
11 2 113 156 182 292
and 3 90 145 195 252
13 4 53 156 220 255
5 119 146 176 298
6 51 141 184 242
0 — — — —
1 80 142 196 293
2 135 170 200 310
15 3 49 169 200 244
4 66 140 200 257
5 62 146 180 280
6 79 153 197 272
1 80 142 196 293
2 135 170 200 310
23 3 49 169 200 244
4 66 140 200 257
5 62 145 180 280
6 79 153 197 272
0 Keyway available only on commercial.
Shell
Size
AR°
or
AP°
Key and Keyway
Arrangement
MIL-C-28876 KEYWAY ARRANGEMENT
BR°
or
BP°
CR°
or
CP°
DR°
or
DP°
©2000 Delphi Automotive Systems. All rights reserved.
DP-00-E-XXX
Packard-Hughes Interconnect
17150 Von Karman Avenue
Irvine, CA 92614 USA
Tel: [1] 949.660.5701
Fax: [1] 949.660.5825
www.packardhughes.com
Delphi Packard Electric Systems
P.O. Box 431
Warren, OH 44486 USA
Tel: [1] 330.759.6000
Fax: [1] 330.759.6085
www.delphiauto.com
Packard-Hughes Interconnect
Packard-Hughes Interconnect is a subsidiary of
Delphi Automotive Systems.
Gold Dot™is a trademark of Packard-Hughes Interconnect.
