ST/PC Fiber Connectors: Multimode, Stainless Steel or Ceramic Ferrule

Bayonet-Style Connectors
Ø127 µm or Ø144 µm Central Bore
Ceramic or Stainless Steel Ferrule

10127C

ST/PC Connector
with Ceramic Ferrule

CAPF

(25 Pack)

190088CP

Dust Caps and Strain Relief Boots
for Ø2 mm Tubing can be
Purchased Separately

10140G1

ST/PC Connector with
Stainless Steel Ferrule
Shown Assembled with
Ø3 mm Tubing (Not Included)

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Overview
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Fiber Connector Selection Guide
Single Mode	Multimode
FC/PC FC/APC ST/PC LC/PC SC/PC	FC/PC (SS Ferrule) FC/PC (Ceramic Ferrule) FC/APC SMA905 ST/PC SC/PC
Bare Ferrules
Bare Fiber Terminator

Features

ST^®/PC Connectors
Bayonet-Style Connectors for Easy Insertion
Pre-Radiused, Ø2.5 mm, Ceramic or Stainless Steel Ferrule
Strain Relief Boots for Ø900 µm and Ø3.0 mm Tubing and a Connector Cap are Included
Strain Relief Boots for Ø2.0 mm Tubing and Additional Caps can be Purchased Separately
Custom Bore Sizes Available; Contact Tech Support with Inquiries

These ST^®/PC (Straight Tip/Physical Contact) multimode connectors each have a bayonet-style mount that allows for quick connects and disconnects. Our 10127C connector offers a ceramic ferrule with a Ø127 µm bore, while our 10140G1 connector features a stainless steel ferrule with a Ø144 µm bore. To improve fiber-to-fiber contact, the tips of both ferrules are pre-radiused.

Both connectors are packaged with a connector cap and two strain relief boots: one for Ø900 µm tubing and one for Ø3.0 mm tubing. In addition to the included boots, we offer a boot and crimp sleeve for Ø2 mm tubing (sold below), as well as stainless steel sleeves designed for mating connectors to our stainless steel tubing.

In addition to the standard Ø144 µm bore, the 10140G1 stainless steel ferrule connector can be drilled to accept fiber up to Ø1000 µm. Custom-drilled connectors are available on any stainless steel ferrule; please contact Tech Support for custom requests.

As an alternative to buying and assembling separate optical fiber, connectors, and furcation tubing, Thorlabs also offers custom pre-built patch cables using the connectors sold on this page. See our Custom Fiber Patch Cable Configurator to place an order.

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ST^®/PC Fiber Connector: Multimode, Ceramic Ferrule

Item #	Style	Bore Diameter	Bore Diameter Tolerance	Concentricity	Ferrule	Included Boots	Crimp Tool for Ø3.0 mm Tubing^a
10127C	ST/PC	127 µm	+4/-0 µm	≤1 µm	Ø2.5 mm, Ceramic	Ø3.0 mm and Ø900 µm	CT042

A crimp tool is not required for Ø900 µm tubing. Because of its size, Ø900 µm tubing is able to fit directly into the connector housing and is held in place without a crimp sleeve once the epoxy dries completely. For more details, please see our FN96A Connectorization Guide.

ST^®/PC Fiber Connector: Multimode, Stainless Steel Ferrule

Item #	Style	Bore Diameter	Bore Diameter Tolerance	Concentricity	Ferrule	Included Boots	Crimp Tool for Ø3.0 mm Tubing^a
10140G1	ST/PC	144 µm	+10/-0 µm	≤1 µm	Ø2.5 mm, Stainless Steel	Ø3.0 mm and Ø900 µm	CT042

A crimp tool is not required for Ø900 µm tubing. Because of its size, Ø900 µm tubing is able to fit directly into the connector housing and is held in place without a crimp sleeve once the epoxy dries completely. For more details, please see our FN96A Connectorization Guide.

Strain Relief Boots and Dust Caps

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Strain Relief Boots and Crimp Sleeves for Ø2 mm Tubing (25 Pack)
CAPF Dust Cap for Ø2.5 mm Ferrules (25 Pack)

Thorlabs offers strain relief boots and dust caps that can be purchased separately from our fiber connectors. The black strain relief boots sold here are compatible with ST connectors and Ø2 mm furcation tubing (our stock connectors do not include a boot compatible with Ø2 mm tubing).

The CAPF Dust Cap is for use with FC connectors or any Ø2.5 mm ferrule. Dirt on the fiber tip can result in permanent damage to the fiber connector, which can increase coupling losses or create undesirable mode structures in the output light. To prevent damaging the connectorized fiber, inspect it before each use, clean it when necessary, and use a fiber connector cap to protect the end face of the connectorized fiber when it is not in use. To aid in inspecting and cleaning connectorized fiber, we offer a selection of inspection tools, as well as fiber optic cleaning products.

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ST/PC Fiber Connectors: Multimode, Stainless Steel or Ceramic Ferrule

Features

ST®/PC Fiber Connector: Multimode, Ceramic Ferrule

ST®/PC Fiber Connector: Multimode, Stainless Steel Ferrule

Strain Relief Boots and Dust Caps

ST^®/PC Fiber Connector: Multimode, Ceramic Ferrule

ST^®/PC Fiber Connector: Multimode, Stainless Steel Ferrule