High-density Circular MT Optical Cable Assemblies
are designed for critical, high-reliability applications
Circular MT ConnectorCircular MT Connector and Receptacle1-by-3 Circular
MT Connector and AdapterCircular MT ReceptacleMolex’s rugged, high-
density circular MT cable as-semblies are designed to meet requirements
mandated by telecommunication, military, medical and many other industries.
Utilizing the lowprole Circular MT or 1-by-3 circular connectors, these cable
assemblies are designed to meet or exceed the mechanical specica-tions
of traditional datacommunication and telecom-munication interchassis
connections.
The circular MT assemblies use a single MT ferrule housed in a nickel-plated,
metal-connector shell. Fiber counts range from 12 to 72 bers. The metal
housing and stainless steel push-pull locking ring provide a more robust
design than the current industry standard MTP* and MPO connectors’ polymer
housings and latches. The MT ferrule is recessed in both the circular connector
and receptacle housings, providing an additional improvement over traditional
MT connectors. Recessing the ferrule ensures it is scoop-proof, preventing
damage to the precise MT alignment pins and ferrule endface during handling
and mating of the connector.
The 1-by-3 circular MT connector housings utilize three MT ferrules in a
nickel-plated, metal-connector shell. Fiber counts range from 36 bers up
to 72 bers by using either 12 or 24 ber MT ferrules. The1-by-3 circular MT
connector housing uses a stainless-steel, locking mechanism to provide a
robust connection. The circular MT receptacle and 1-by-3 circular MT adapter
housings feature a deep, polarized mating cavity which will reduce alignment-
pin hole damage that may occur during the mating process with traditional MT
connector systems.
The circular MT receptacle housing uses a jam nut for mounting versus the
1-by-3 circular MT adapter that is ange mount with screws. The shutter
designed for the 1-by-3 adapter provides laser eye safety and has passed
the TP-91 dust test specication. Molex’s circular MT cable assemblies offer a
more robust MT ferrule-based interface versus ribbon-based optical interfaces,
which have traditionally been rectangular. The circular MT and 1-by-3 circular
MT products ensure improved alignment benets, increased pull-strength and
the use of new round ribbon-cable constructions. Circular MT connectors will
be sold only as terminated cable assemblies. Circular MT cable assemblies
complement Molex’s existing line of MT products. For more information on
Molex’s extensive optical product offering, please visit: www.molex.com/ber.
MT ferrules are recessed in the connector and receptacle housings
ensuring scoop-proof mating which prevents damage to alignment pins
and ferrule endface
Aluminum connector and receptacle housings provide a robust
interconnect with exceptional pull strength
Electro Magnetic Interference (EMI) gasket provide seals and EMI
Stainless Steel locking mechanism provides a secure latch to prevent
accidental demating
Standard MT ferrules which provide an industry-standard interface with
high density and reliable performance
Enable custom board-to-board stack-height requirements
Designed for round, multi-ber jackets to provide improved ber
management
Features and Benets
Circular MT
Optical Cable
Assemblies
106275 1-by-3 Circular MT
Lensed MT
1-by-3 Circular MT Connector and Adapter
www.molex.com/product/circularmt.html
©2015 MolexOrder No. 987650-3051 Rev.2 Printed in USA/KC/2015.01
Reference Information
Packaging: Custom per assembly
Optical
Ferrule Type: MT Ferrule
Fiber Density: 12 to 72 bers
Fiber Type:
Single mode: 9/125μm
Multimode: 50/125μm or
62.5/125μm
Insertion Loss:
Single mode:
8 Fiber: 0.12 dB typical <0.5dB
max.
12 Fiber: 0.15 dB typical <0.75dB
max.
24 Fiber: 0.20 dB typical <0.75dB
max.
Multimode
12 Fiber: 0.15 dB typical <0.5dB
max.
24 Fiber: 0.22 dB typical <0.75dB
max.
36 Fiber: 0.30 dB typical <1.0dB
max.
72 Fiber: 0.35 dB typical <1.25dB
max.
Mechanical
Operating Temperature Range:
-5 to +75°C
Durability: 200 matings
Physical
Housing: Nickel-plated aluminum
Ordering Information
Specications
Telecommunication Equipment
- Hubs, routers, data centers
Instrumentation and Medical Equipment
- Test equipment, switches, video systems
Military
- Communications equipment
Applications
Circular MT
Optical Cable
Assemblies
36 to 72 Fiber Round Cable
Boot
Locking Mechanism
(Stainless Steel)
12 to 24 Fiber MT Ferrules
Nickel-Plated
Aluminum Housing
1-by-3
Circular MT
Connector
1-by-3 Circular MT Adapter
* Only sold as terminated cable assemblies. Circular connector and receptacle components will not be sold separately. Part numbers
and sales drawings will be established based on specic customer design requirements.
† Cable Length: Dependent upon customer design requirement
‡ Fiber Density: Fiber counts range from 12 to 72 bers, dependent upon customer design requirement
Order No. Component Component Width
Component
Length
Cable
Length
Fiber Density
106275-1000*
1-by-3 Circular MT Connector,
Double-Ended Assembly
Ø17.175mm
(0.676”)
Ø49.00mm
(1.92”)
3.00m
(9.840’)
3-by-12 Fiber
MT = 36 Fibers
106275-1001*
1-by-3 Circular MT Adapter
System Drawing
26.2-by-26.2mm
(1.03 x 1.03”)
38.80mm
(1.527”)
N/A
106275-0000*
1-by-3 Circular MT Connector
and Adapter System
N/A N/A
3.00m
(9.840’)