Fiber Optic Connector Specifications you need to know
Introduction
Today there’re varieties of documents about fiber optic connectors, whereas the overview of typical connector specifications is difficult to come across. As we know, different manufactures produce the same type of connectors to nuanced specifications. Despite of this, there always is a common denominator among these subtle specifications. Therefore, we’d like to do our best to summarize the typical specifications of the commonly seen types of fiber connector, including FC, ST, SC, LC, E2000, and MPO connectors.
FC Connector
Features
Complies with IEC 61754-13 and TIA 604-4-B, FOCIS-4 for intermateability
Low insertion loss and back reflection capability
Precision anti rotation key for mechanical stability
Nickel plated metal body corrosion resistant
Zirconia ceramic ferrule available in several performance grades RoHS materials, REACH SvHC compliant
Individual parts packed in bulk package
Applications
Telecommunication networks
Local area networks
Data processing networks
Distribution application
Premises distribution
Test and laboratory equipment
Typical FC Connector Specifications
Typical FC Connector Specifications
Singlemode
Multimode
Insertion Loss
≤0.20 dB
≤0.25 dB
Return Loss
≥55 dB UPC; ≥60 dB APC
Ferrule Tolerance
126 ± 0.5 μm internal
127 ± 0.5 μm internal
Fiber Compatibility
9/125 µm
62.5/125 µm and 50/125 µm
Coupling Mechanism
Screw-on nut
Operating Temperature
-40 °C to +85 °C
Finish
Pre-radiused PC end, radius 10 to 25 mm
Ferrule type
Zirconia ceramic, pre-radiused
Ferrule Diameter
2.5 mm ± 0.001
Mating Cycles
500
Standards
IEC 61754-13; TIA-604-4 (FOCIS-4)
Strain relief
200 N
Vibration
∆IL< 0.2 dB; ∆RL< 5 dB
FC APC Premium Connectors
ST Connector
Features
Complies with IEC 61754-2 and TIA 604-2-B, FOCIS-2
Low insertion loss and back reflection capability
Bayonet style (stick and twist) housing for easy connection
Nickel plated metal body
Zirconia ceramic ferrule available in several performance grades
RoHS materials, REACH SvHC compliant
Individual parts packed in bulk package
Applications
LAN
Data processing networks
Distribution application
Premises distribution
Typical ST Connector Specifications
Typical ST Connector Specifications
Singlemode
Multimode
Insertion Loss
≤0.20 dB
≤0.15 dB
Return Loss
≥35 dB PC;≥45 dB SPC;≥55 dB UPC
Ferrule Tolerance
126 ± 0.5 μm internal
127 ± 0.5 μm internal
Fiber Compatibility
9/125 µm
62.5/125 µm and 50/125 µm
Coupling Mechanism
bayonet mount
Operating Temperature
– 40 °C to + 85 °C
Finish
Pre-radiused PC end, radius 10 to 25 mm
Ferrule type
Zirconia ceramic, pre-radiused
Ferrule Diameter
2.5 mm
Mating Cycles
500
Standards
IEC 61754-2; TIA-604-2 (FOCIS-2)
Strain relief
100 N
ST connector
SC Connector
Features
Complies with IEC 61754-4 and TIA 604-3-B, FOCIS-3
Low insertion loss and back reflection capability
A push-pull coupling mechanism for easy insertion and consistent connection
Connector housing and duplex clip available in different colours for easy identification
Zirconia ceramic ferrule available in several performance grades
RoHS materials, REACH SvHC compliant
Individual parts packed in bulk package
Applications
Telecommunications networks
CATV – Cable television
Fibre-To-The-Home (FTTH)
LAN, MAN and WAN application
Data processing networks
Premises distribution
Typical SC Connector Specifications
Typical SC Connector Specifications
Singlemode
Multimode
Insertion Loss
Typical 0.15 dB
Typical 0.15 dB
Return Loss
≥55 dB UPC
≥25 dB Typical
Fiber Compatibility
9/125 µm
62.5/125 µm and 50/125 µm
Coupling Mechanism
snap-in push/pull
Operating Temperature
– 40 °C to + 85 °C
Ferrule type
Zirconia ceramic ferrule
Ferrule Diameter
2.5 mm
Mating Cycles
1000
Standards
IEC 61754-4; TIA-604-3(FOCIS 3)
SC Duplex Connector
LC Connector
Features
Complies with IEC 61754-20 and TIA 604-10-B, FOCIS-10 for intermateability
Low insertion loss and back reflection capability
Compact SFF design with snag free latch for easy insertion and consistent connection
Connector housing and duplex clip available in different colors for easy identification
Zirconia ceramic ferrule available in several performance grades
RoHS materials, REACH SvHC compliant
Individual parts packed in bulk package
Applications
Datacentre applications
Telecommunication networks
LAN, MAN and WAN application
Data processing networks
CATV – Cable television
Fibre-To-The-Home (FTTH)
Premises distribution
Typical LC Connector Specifications
Typical LC Connector Specifications
Singlemode
Multimode
Insertion Loss
0.10 dB average
Return Loss
≥ 55 dB UPC;≥ 70 dB APC
25 dB Typical
Fiber Compatibility
9/125 µm
50/125 µm 62.5/125 µm
Coupling Mechanism
push/pull with a latch
Operating Temperature
-40 °C to +85 °C
Ferrule type
Zirconia ceramic
Ferrule Diameter
1.25 mm
Mating Cycles
500
Standards
IEC 61754-20; TIA-604-10 (FOCIS-10)
Strain relief
70 N
The LC Connectors
E2000 Connector
Features
Secure transmission of high bit-rate protocols
Zirconia ceramic ferrule fully protected by spring
loaded shutter
Push-pull locking mechanism for easy installation
Color coded release levers
Compliant with European (EN 186270) and International (IEC 61754-15) standards
Tested and approved by Swisscom
Applications
WANs, LANs, CATV
Metrology, Railway, Industry
Typical E2000 Connector Specifications
Typical E2000 Connector Specifications
Singlemode
Multimode
Insertion Loss
Typical 0.20 dB
≤0.25 dB
Return Loss
≥ 55 dB UPC; ≥ 60 dB APC
≥23 dB Typical
Coupling Mechanism
Snap, with light and dust-cap
Operating Temperature
-25 °C to +70 °C, conditioned by type of cable
Ferrule type
Zirconia ceramic
Ferrule Diameter
2.5 mm
Mating Cycles
500
Standards
IEC 61754-15; TIA/EIA-604-16(FOCIS 16)
Strain relief
100 N
E2000 Fiber Optic Connector
MPO Connector
Features
Terminates ribbon fiber or loose individual fibers
Designed for low loss and standard loss SM and MM applications
Ruggedized round cable, oval cable and bare ribbon options available
Color coded housings available to differentiate fiber type, polish type and/or connector grade
Housing is removable for quick change of pin clamps and easy ferrule cleaning / re-polishing
Alignment achieved with high precision guide pins
Applications
Front panel and backplane multi-fiber point to point links
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