SMA Fiber Optic Connector 905 and 906
$3.00
SMA connectors has two types: the SMA-905 has a straight ferrule, whereas the SMA-906 has a stepped ferrule design.
SMA Fiber Optic Connector 905 and 906
SMA Fiber Optic Connector has two types: the SMA-905 has a straight ferrule, whereas the SMA-906 has a stepped ferrule design. The SMA-905 is a non-contact connector typically used in medical, industrial, and military applications. When two SMA 906 are mated together the stepped ferrule design allows an alignment sleeve to be used and therefore the connection has lower insertion loss. The SMA 905 does not have an alignment sleeve therefore the Insertion Loss of the 905 is higher than that of the 906.
SMA fiber optic connectors and related SMA fiber optic products are widely used in medial, sensor and fiber optic test applications. SMA was developed by Amphenol company and it features the compact size and excellent durability and repeatability.
SMA fiber connectors can be with ceramic ferrule or stainless steel ferrule types. SMA has two versions, the SMA 905 and SMA 906. The difference is SMA 905 connectors adopt straight ferrule while SMA 906 use step ferrule to achieve lower insertion loss. Typical SMA fiber optic connector use 3.175mm ferrule.
SMA-905 connector for 400 um optical fiber for medical laser with 10 W power
Description of SMA connector
SMA connector are simplex and multimode type.
SMA connectors make use of threaded connections and are ideal for military applications because of their low cost multimode coupling.
SMA connectors are available with stainless alloy or stainless steel ferrules. The stainless alloy ferrule may be drilled from 125um to 1550um to accept various fiber sizes.
In addition to their compact size, SMA connector has good mechanical durability. The SMA connector holds a single fiber. SMA connectors have a threaded Coupling nut.
The SMA 905 is a non-contact connector that is widely used in medical, laser, Surgical, industrial , military，spectrometer applications etc. SMA 905 connector has a threaded Coupling nut and a straight ferrule. The Ferrule is traditionally made of stainless steel, although ceramic versions are available. The O.D for SMA fiber connector ferrule typical is 3.17mm. The ferrule design on the SMA 905connector is engineered for large core fibers.
Our standard SMA 905 connector with A one-piece straight stainless steel ferrule/body, knurled coupling nut, black 3mm strain relief thermoplastic rubber boot, shaped “C” clip, black T-Style thermoplastic rubber dust cap, and a metal crimp.
Features
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- Non-contact connector
- Threaded coupling nut connector
- One-piece or two-pieces construction available
- Hex coupling nut or round knurled nut
- Stainless steel and ceramic ferrule or other specified material available
- Metal ferrule available with custom drilled fiber I.D from 100um to 2500um
- TIA and IEC compliant
- Simple termination
- High temperature stability
- Good durability
- RoHS compliant
Specification
- Fiber hole size: 127um
- Fiber type: multimode
- Boot size: 3.0mm
- Ferrule material: stainless steel or Zirconia
This price if for the fiber hole size of 127um. We can also off other hole size betweem 125-2500um
Overview: The SMA 905 and SMA 906 connectors are precision mechanical fiber optic connectors widely used in industrial, military, and medical communication systems. They feature a robust threaded metal design providing excellent mechanical strength and high‑power handling. Both versions use a stainless steel housing and ceramic or stainless steel ferrules to ensure stable optical performance for multi‑mode and high‑intensity applications.
Structure and Materials
- Connector Type: SMA 905 and SMA 906 (standard threaded mechanical style)
- Ferrule Material: Stainless steel, ceramic, or zirconia depending on power rating requirements
- Body Material: Nickel‑plated brass or stainless steel for durability and corrosion protection
- Cable Type: Compatible with multimode step‑index and graded‑index fibers (50/125 μm–1000 μm)
- Polish Type: Flat polish or custom angle polish available
- Coupling Mechanism: Precision threaded screw interface ensuring reliable alignment and vibration resistance
Technical Specifications
| Parameter | Typical Value |
|---|---|
| Insertion Loss | ≤ 0.35 dB (typical) |
| Return Loss | ≥ 45 dB (MM fiber) |
| Repeatability | ± 0.1 dB after 100 cycles |
| Temperature Range | −40 °C to +85 °C |
| Ferrule Diameter | 2.5 mm / 3.175 mm (custom options available) |
| Cable Diameter | 2.0–3.0 mm standard buffer cables |
Key Features
- High‑power optical handling and excellent thermal stability
- Strong metal housing ideal for harsh industrial environments
- Repeated connect/disconnect capability with low signal degradation
- Simple threaded mounting for secure connection
- Optional ceramic ferrule for enhanced optical alignment accuracy
Applications
- Medical laser delivery systems and optical instruments
- Fiber optic sensor and measurement equipment
- Military and industrial communication links
- Laboratory and test applications requiring high repeatability
- High‑power laser transmission or coupling systems
Related keywords: SMA 905 connector datasheet, SMA 906 connector fiber optic, high‑power optical connector, industrial fiber connector, stainless steel fiber connector, laser fiber termination.
FAQ – SMA 905 and SMA 906 Fiber Optic Connectors
What is the difference between SMA 905 and SMA 906 connectors?
Both connectors use the same threaded interface; however, SMA 905 is commonly used for standard cables and bulkhead mounting, while SMA 906 has a modified design better suited for higher precision or laser applications.
Which fiber types can these connectors support?
They are typically used with multimode fibers ranging from 50 μm to 1000 μm core diameter and can also be adapted for special coatings and high‑power beam delivery fibers.
Can SMA connectors handle high‑power laser transmission?
Yes. SMA 905 and SMA 906 connectors are designed to operate under high optical power conditions using metal ferrules and proper thermal management techniques.
Are they reusable?
Yes, they feature a robust threaded mechanism that allows multiple connections without significant optical loss change.
In what environments are these connectors typically installed?
They are commonly used in industrial, defense, and laboratory systems where mechanical stability and repeatable alignment are critical.
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SMA Fiber Optic Connector 905 and 906