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Ferrule Sizes

Published: April 9, 2018
, Last updated: September 17, 2025

Ferrule Sizes

Some insight when it comes to changing a connector supplier…..  let’s discuss a singlemode SC connector for first example:  Starting from the point that the SC is an industrial standard connector, everyone knows that it is standardized on the connection point, meaning that all other area’s like the inner-housing, ferrule size and ferrule shape, housing color, backside and strain relief boot are custom to the manufacturer.

From Our FOC TIPS series, a tip on ferrule size:

Ferrule Size:  specification of ferrules is critical to performance. Often we look at the inner diameter but we learn that very limited customers do have the ability for incoming inspection. FOC offers gauge kits to confirm if you receive the right inner diameter in the range of 125-128u in incremental of 0.5um and assure that you receive the quality you’re paying for. It still happens, and most of our customers will agree, that that the connector manufacturer change their ferrule supplier. You might not notice this until you polish the connector and discover that you see a change in geometry. The shape of the ferrule is directly related to polishing thus geometry and IL and RL values of the assembly.
 

READ THE BLOG:  Changing your connector supplier

 

Additional resources from the FOC team include:

 

 

Have questions about this FOC Tip?

Contact FOC with questions at: (800) 473-4237 / 508-992-6464 or email: FiberOpticCenter@focenter.com and we will respond ASAP.

About the Author
FOC Tips Fiber Optic Center has a team of technical experts and marketing strategists with decades of years in the field. This team contributes to the fiber, cable and specialty industries coverage through news, alerts, reports and general media information.
About Fiber Optic Center, Inc.
Fiber Optic Center, Inc., (FOC), is an international leader in distributing fiber optic components, equipment, materials, and supplies known for helping customers make the best cable assemblies in the world for over three decades. Material property consultation is provided by technical experts for lapping film, epoxy, adhesives, optical coatings, and optical plastics during application specific material selection. Technical process expertise is offered in several key technology areas. Specialized expertise includes cable assembly line mastery, fiber broadband field installation best practices, and technical advancements in telecom, datacom, data centers, and hyperscale. Optical cable specification development includes design and quality testing. FOC's impact reaches the network physical capabilities through fiber manufacturing process expertise from preform fabrication and shaping, fiber drawing, and coating requirements for double clad fibers used for high power fiber laser applications to solution doping, vapor phase doping, rare earth chelates and halide recipe consultation. Fiber Optic Center is the preferred choice for the world’s fiber professionals as the industry connection to the most innovative optical products, technologies and technical experts who integrate their manufacturing knowledge and vast experience into customers' worldwide operations. @FiberOpticCntr

For further information contact:
Fiber Optic Center, Inc., 23 Centre Street, New Bedford, MA 02740-6322
Toll Free in US: 800-IS-FIBER or 800-473-4237 . Direct 508-992-6464. Email: sales@focenter.com or fiberopticcenter@focenter.com

For media contact:
Kathleen Skelton, Director of Strategic Marketing, C: 617-803-3014 . E: kskelton@focenter.com