T&S grade B patch cord connector is the patchcord with the random mating performance of Grade B as IEC-61753-1 defined, more than 97% of maximum 0.25dB random mated with each other and the average is less than 0.12dB. Simplex, duplex grade B patchcord is well fabricated and all grade B connectors (including LC, MU, SC, FC, etc.) are compliant to IEC-61754, end face geometry is superior to IEC-61755. As an experienced fiber patch cord manufacturer, T&S provides high-quality grade B patch cord connector for years.

Grade B Patch Cord Basic Info

With the advances in fiber optic technology and transmission systems, reliable cabling systems are becoming even more important. Active optical equipment, which is often worth hundreds of thousands of dollars, is all connected to the network via the humble fiber optic patch cord or patch lead. The risk of network downtime due to unreliable cabling is one that should be avoided. Therefore, these types of networks, along with many other Data Center and high-speed Commercial networks require reliable patch cord connector infrastructure in order to maximize performance and to ensure long-term reliability.

Grade B Patch Cord Connector Features

IEC 61753-1 random mating grade B

Precision zirconia ferrules for patch cord connector

LC, MU, SC, FC, ST, all single fiber connector

Usually available on single-mode connector

Excellent geometry and end face appearance

Good repeatability and interchangeability

Flame retardant optical fiber cable

Standard Compliance of Grade B Patch Cord

Connector compliant to IEC 61754

Optical fiber cable compliant to IEC 60793

ITU G.657

Qualified to Telcordia GR-326-Core

Reach, RoHS and SvHC compliant

Grade B Patch Cord Cable Specifications

Technical Specification

Fiber Optical Cable Specification

Items Description          

Connector Type LC/MU/SC/FC/ST/Others

Polishing Type UPC/APC 8°/APC 9°

Insertion Loss (dB) ≤0.20          

Random mating loss (dB) Max. 0.12dB mean, Max 0.25dB for 97% of samples

Return Loss (dB) UPC ≥ 50, APC ≥ 65            

Wavelength (nm) 1310/1550              

Installation Temperature (°C) -20 to 70

Storage Temperature (°C) -40 to +85

Optical Fiber Connector Grades of Grade B Patch Cord Connector

IEC standards dictate the patch cord connector performance for each grade of fiber-optic patch cord connector based on IEC 61753-1. As defined, there are four grades for insertion loss from A (best) to D (worst). For conventional patch cord connector, mated performance is over 0.5dB, even to 1.0dB. This may cause the whole high-speed optical connection system unreliable and transmission unstable. Therefore, the grade B patch cord connector is stable with the excellent optical performance of a maximum 0.25dB while mating each other which is a guarantee for hundreds of gigabit data exchange with connections.

Grade Average of Random Mating 97% of Random Mating

A* Not Defined Not Defined

B ≤0.12 dB   ≤0.25 dB

C ≤0.25 dB ≤0.50 dB

D ≤0.50 dB ≤1.0 dB

Remark: Grade A is not determined yet according IEC 61753-1

Grade B Patch Cord Cable Mechanical Data

Fiber Count OD (mm) Nominal Max. Tension (N) Max. Crushing Resistance (N/100mm)

Weight (kg/km) Short Term Long Term Short Term Long Term

Simplex 1.6 1.6±0.2 2.6 80 40 500 100

Simplex 2.0 1.9±0.2 4.5 100 60 500 100

Simplex 3.0 2.8±0.2 7.5 100 60 500 100

Duplex 1.6 3.4±0.2 x 1.6±0.2 5.3 80 40 500 100

Duplex 2.0 4.0±0.2 x 1.9±0.2 8.7 200 100 500 100

Duplex 3.0 5.8±0.3 x 2.8±0.3 14.8 200 100 500 100

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