ST UPC to ST UPC 50/125 OM4 Simplex Multi-Mode
| Connector | ST to ST | Jacket OD | 2.0/3.0mm |
|---|
| Fiber Mode | 50/125um | Jacket Color | Violet |
| Polish | UPC to UPC | Wavelength | 850/1310nm |
| Fiber Type | Simplex/Duplex | Jacket Material | PVC/LSZH |
| Insertion loss | ≤0.2dB | Interchange ability | ≤0.2dB |
| Return Loss | ≥50dB | Vibration | ≤0.2dB |
| Operating Temperature | -40℃～75℃ | Storage Temperature | -45℃～85℃ |
| Polarity | A(Tx) to B(Rx) | Fiber Grade | G652D |
Color Coding
The buffer or jacket on patchcords is often color-coded to indicate the type of fiber used.The strain relief"boot"that protects the fiber from bending at a connector is color-coded to indicate the type of connection.Connectors with a plastic shell(such as SC connectors)typically use a color-coded shell.Standard color codings for jackets and boots(or connector shells)are shown below:
Jacket Material
The jacket material is application specific.The material determines the mechanical robustness,aging due to UV radiation,oil resistance,ect.Nowadays PVC is being replaced by halogen free alternatives,mainly driven by more stringent regulations.
| Material | Halogen-fee | UV Resistance | Remark |
|---|
| LSFH Polymer | Yes | Good | Good for indoor use |
| Polyvingl chloride(PVC) | No | Good | Being replaced by LSFH Polymer |
| Polyethylene(PE) | Yes | Poor | Good for outdoor applications |
| Polyurethane(PUR) | Yes | Poor | Highly flexible cables |
| Polybutylene terephthalate(PBT) | Yes | Fair | Good for indoor use |
| Polyamide(PA) | Yes | Good-Poor | Indoor and outdoor use |
