Fast Connector

Fast connector is short for fibre optic fast connectors, it is a kind of field-assembled fibre optic movable connectors, widely used in the building, fiber to the home and other fiber optic cable deploy environments for optical cable termination.

International standards:GR326, IEC61300-2, ROHS, IEC61754-4, IEC61753-1 standards

Wide Application

Fast connector fiber optic can be adapted to a wide range of deploy environments without the need for other forms of protection and with extremely low loss to the optical signal, it is an important guarantee for FTTH fibre optic network. In particular, the SC fast connector is widely used in field cabling and FTTH because of its high success termination rate and high stability.

Applicable of Cable

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    Working Principle

    Fiber Optic Fast Connector is a pre-embedded fibre structure, where a section of bare fibre is pre-inserted into the ceramic ferrule core at the factory, and the ferrule end face is grounded and polished, the docking area is filled with matching oil; when on-site construction, the operator cuts the feeder cable sheath, strip the coating till bare fiber and then insert into the V groove device, fix the fibre and the pre-embedded fiber in a high-precision V-groove to achieve a seamless docking between the fibre cores by means of outer diameter alignment.

    Before After

    Spare Parts

    FTTH Fiber Fast Connector  is made from plastic  materials, the  main parts include:  Dust cap, V groove, Ceramic Ferrule, Spring, Main body, Housing, and Screw Nut.

    All raw materials are brand new, no second hand, all meet RoHS standard, and test 100% qualified. All spare parts will be assembled at factory and test 100% before delivery, quality assurance, and fast delivery time.

    Product Advantages

    Production Procedures

    Package Information

    Yingda provides all kinds of package methods for customers, like PP bag, blister box, candy pack or others.

    PP Bag

    1pc/pack, 100pcs/PP bag

    Carton Box


    Collation Ferrules to Molds

    Blister Box


    Carton Box

    100pcs/inner box, 1000pcs/carton

    Collation Ferrules to Molds

    Fast Connector Category

    According to different type of interface , connector can be divided into several types: SC LC FC ST. Due to FTTH network and Data Center network are very popular, now  SC fast connector and LC fast connector are quite hot sale, each one have many types of versions.

    LC Fast Connectors
    SC Fast Connectors
    User Manual
    Length Fix Tool

    Standard Configuration

    Every fast connector will configurate English user  manual, length fix tool especially.  Please do read the manual carefully and operate according to the manual.

    There are bare fiber/cable coating length data on each manual to guide customers, pls take note.

    Every type of connectors will use different manual or length fix tool, but if your are skilled workers, then no need manual or any kind of tool can be used, only refer to the length, it will be done.

    Tools Needed On Site Construction

    Dust free paper Kimwipes, alcohol (alcohol cotton), Drop cable stripper, Miller coating stripper are  the necessory tools which needed on sit construction, you can buy in your local market, or contact us. 

    Besides, for better operation, suggest to use ftth toolkits bag as below: 


    Before Buy, Please Help...

    If you are interested in our products, please help send the following information, so that the sales representative can reply to the quotation in time.

    • Connector type: SC LC FC ST
    • Polish mode: UPC APC
    • Connector length:50mm 52mm 53mm 55mm 60mm,etc. (Note: length is from the ferrule top till the boot end, not including the dust cap.)
    • Insertion loss:<0.5dB, or 0.3dB
    • Pack: PP bag, blister box, or custom
    • Applicable cable type:900um 2mm 3mm 2.0*1.6mm 2.0×3.0mm

    How To Connect Fast Connector With Fiber Optic Cable?

    Fiber optic fast connector installation is very easy, but it is highly susceptible to contamination and damage resulting in damage to the performance of the fiber, in the installation process should be away from dust and contaminants, and inserted fiber slowly to prevent fiber from broken.

    Remove the connector end cap and insert the cable through it

     Strip the outer sheath of the cable with drop cable stripper by a length of approximately 5cm(insert cable till the top of the stripper top)

    Put the cable into the length fix tool slots till was blocked. Place Miller pliers close to the edge of the length tool, then strip the exposed coating of the fiber

    Wipe and clean the bare fiber with a dust cloth and alcohol to get rid of dust and oil

    Put the fiber with length tool on the fiber cleaver, cut the fiber

    Push back the fiber switch to open it, align the optical fibre with the main aperture at end of the connector and insert it. When the fibre is initially bent, press the crimp cap down

    Screw the end cap on the cable back into the connector body and snap on the shell, push forward the fiber switch forward to lock the fiber.

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    What Possbile Problems When Use Fast Connectors?

    If there is a problem with the use of fiber optic fast connectors, excluding the quality of the product itself, in most cases, improper construction operations or environmental factors are the reasons.

    1. Why The Test Data Greater Than 0.5dB?

    Before test, ensure the equipment is normal and the test data is cleared. Excluding product quality problems, normally caused by manual operation errors. Please reconfirm whether to follow the manual operation steps?  If not, please follow the steps step by step to operate again.

    If the parameter is large like 20dB, that means the 2 fibers are not aligned at all, maybe the fiber is broken during operation, the fiber is not long enough or the fiber is not inserted correctly.

    If the parameter is not large, like around 1dB, there may be several cases as follows, please eliminate one by one to find out the problems.

    2. Why Does The Fiber Break?

    Improper operation like fiber cutting length is too long, more than the specified length which is not seen until the fiber bend has broken.

    Strip too much the coating layer, lost the protection of the fiber, due to the fiber bend too much. Therefore, please strip the fiber with length fix tool.

    When stripping the fiber with pliers, the fiber is injured at 1-2mm before the coating layer, which cannot be seen by the naked eye. When subjected to external vibration, the fiber is broken. Recommended to use high quality stripping pliers or regularly check whether the blade is damaged and replace it in time.

    3. Why Is The Signal Bad After A Period Of Time?

    If the customer destination has special environmental, such as perennial high and low temperature environment, recommended to use metal V-groove or ceramic V-groove ferrules, because these 2 materials will not thermal expansion and contraction lead to fiber deformation or damage. Commonly used plastic V-groove is easy to thermal expansion and contraction, resulting in fiber will be squeezed deformation and signal attenuation.

    4. Why Can't Insert The Fiber Into The Fast Connector?
    5. How Long Of Fast Connector Should I Choose?

    According to the actual use scenario of this product, choose different lengths of fast connectors to ensure that the bending radius of the fiber optic cable is within the normal range. Generally, pre-embedded is G65A71 fiber, the bend radius ≥10mm.

    6. Why The Fast Connector Attenuation Will Become Large or Not Conductive After Some Time Use?

    What Is The Difference Between Fast Connector And Mechanical Splicer?

    Mechanical splicer is the same structure as fast connector, outer appearance are similar, but it does not have movable interface / connectors. When connection fiber and fiber or fiber with pigtails, it make direct fixed connection at optical link node, the junction loss of about 0.1dB ~ 0.2dB. It is more convenient and flexible in indoor wiring or limited space deployment.

    What Is The Difference Between Fast Connector And Fusion Splice-On Connector?

    Quick connector is generally divided into two categories of mechanical and thermal fusion. Mechanical is also divided into pre-buried and through type.

    Pre-embedded Fast Connector

    Fast Connector pre-buried a section of optical fiber from the ferrule top to the connector internal V groove. On site construction, will insert cable into the V groove to realize connection through the matching oil. This method is commonly known as cold splicing.

    Fusion Splice-On Connector

    Fusion splice on connector also pre-buried an optical fiber in the connector, and connection is fusion splice, but the fusion joint is inside of the connectors. On site construction, remove the connector boot, strip and cut the tight buffer, then fusion with the end of the fiber optic cable on fusion splicer. Fusing fiber with a fusion machine is commonly known as thermal fusion, which is a high-voltage discharge to fuse cut fibers together. 

    Fusion Splice On Connector

    Yingda can offer all kinds of fusion splice on connectors on customer request. It is widley used in FTTH network too. All will be test 100% before deliery, and package well.  Now most buying is SC  fusion splice on connector and FC fusion splice on connector.


    Fusion splice on connecctor is the same as traditional fusion, need fusion splicer. It is a high quality operation, low splice loss (generally 0.03-0.05dB), the loss will not increase with time. But fusion splicer is high cost, complicate to operate, limited power storage capacity, field operations are limited. So this type of connector application is less.

    Pre-embedded fast connector is a cold connection, the pre-buried fiber has been pre-grinding and polished in factory, end-face optical properties is basically the same as the conventional patch cord connectors. And its connection through the matching oil, the assembly operation requirements are not so stringent. Because it does not require a fusion splicer, pure passive construction operation, fast and convenient, no need special tools, easy to carry, suitable for field operations. The disadvantage is the loss is larger than splice on connectors, generally 0.2-0.5dB per cold joint.


    Overall, cold jointing need less tools, but the price of the connectors need cost, which is relatively expensive than fusion splice. But hot fusion requires splicer machine which is expensive and not easy to carry. Cold jointing loss is greater than hot fusion. So please choose according to your project needs and real situation.

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