1×2 Singlemode FBT Splitter, 70/30, LC/UPC, 0.9 mm

FBT-1×2-SM-0.9-LCUPC-70-30

Last updated: 2026-09-29
Working model: FBT-1x2-SM-0.9-LCUPC-70-30

Technical-reference disclaimer: Figures are for reference only and are not a guarantee. Do not use family tables, competitor values, or an unapproved sample reading as the acceptance limit for this model. Procurement and installation must use the approved BWNFiber datasheet, drawing, port map, project loss budget, and agreed test record.

Quick answer

FBT-1x2-SM-0.9-LCUPC-70-30 identifies a proposed 1×2 single-mode FBT splitter with a nominal 70/30 output ratio, LC/UPC interface designation, and 0.9 mm lead designation. Use this page to validate that exact configuration. The optical limits, wavelength window, fiber standard, physical dimensions, lead length and test scope are TBC — source required.

Buyer summary

This is an exact-configuration page, not a general guide to every FBT splitter. A buyer should be able to use it to freeze the model code, verify which physical output is assigned to the 70% path and which is assigned to the 30% path, check LC/UPC mating interfaces, and request the correct controlled documents before quotation.

The supplied product image shows a compact tubular assembly with three white leads and blue LC-form connectors. That visual supports the product form but does not prove the coupling ratio, UPC polish, fiber grade, wavelength window, optical performance, dimensions or compliance. Those fields must be matched to the final datasheet, drawing and test record.

Exact configuration and evidence status

What 70/30 must mean in the order record

The nominal ratio identifies two unequal outputs, but the order record must do more than repeat 70/30. It must identify the physical output labels, state which route receives the higher-power path, and define the approved optical limit for each path at the required wavelength or window.

Do not assume that the red or blue lead, the upper or lower lead, or a left/right position always represents a particular output. The supplied hero image does not show a readable port map. Require one labeled product view or drawing before approval.

The percentage is not an insertion-loss specification. Use the model's approved path-specific maximum values in the link budget and acceptance plan; do not replace them with an ideal calculation, a family table, or the unverified numbers in the source draft.

LC/UPC interface checks

The model code specifies LC/UPC, and the supplied image shows blue LC-form connectors. Final approval still requires the purchase record to state LC/UPC at every terminated end and identify the mating adapters or equipment interfaces.

• Confirm LC rather than SC, FC or ST at all three required ends.
• Confirm UPC rather than APC; do not approve a direct UPC-to-APC physical mating.
• Confirm simplex adapters, panel density and connector access in the host equipment.
• Define inspection and cleaning requirements before optical measurement.
• Record whether the acceptance path includes the installed connector pairs.

Connector body color is a useful handling cue, not a substitute for the approved model, label, drawing or inspection record.

Fiber, lead and package boundaries

The current model name provides SM and 0.9 mm designations. It does not establish the exact glass standard, buffer material, tube material, bend limits, tensile/crush performance, flame rating, UV resistance, water resistance, IP rating or outdoor suitability.

Before this SKU is approved, request:

1. the exact fiber designation and manufacturer/class if it is intended to be public;
2. the 0.9 mm lead construction and permitted color/label scheme;
3. input and output lengths with a clear length datum and tolerance;
4. metal-tube material, dimensions and drawing revision;
5. minimum bend and handling requirements for the completed assembly;
6. the host tray, enclosure or panel conditions that protect the tube and leads.

Wavelength and optical-performance approval

FBT couplers are ordered for defined operating windows and coupling behavior. A single-mode designation does not prove that this exact build is wavelength-flat across a broad band. The approved datasheet must name the required wavelength window and the limits used for each output.

For the final specification table, require the following rows:

The numbers in the supplied source Markdown are intentionally not reproduced as product specifications because the cited report was not supplied.

How to approve the correct configuration

1. Confirm the page and model owner. Decide whether BWNFiber or the existing Ningbo Bwinners/Sijee exact-model page is the primary public owner and approve the final SKU format.
2. Lock the topology and ratio. Confirm one input, two outputs, the intended 70%/30% route assignment, and the project reason for an unequal split.
3. Close both path budgets. Use approved maximum IL values for the two outputs at the required operating wavelengths. Check both maximum-loss and minimum-loss/receiver-power conditions where relevant.
4. Verify every interface. Record LC/UPC at the input and outputs and confirm the adapters/equipment they mate with.
5. Approve the mechanical build. Confirm fiber standard, 0.9 mm construction, lead lengths, tube dimensions, labels, routing and the host enclosure.
6. Define the test record. State wavelengths, reference setup, test path, limits, instrument/calibration requirements, sampling scope and exception handling.
7. Freeze the purchase record. Tie model, drawing revision, optical limits, port labels, quantity, packaging and required documents to the quotation and purchase order.

Difference from related pages and products

Close sibling products require separate records:

• 50/50 LC/UPC single-mode: different ratio and path limits.
• 70/30 SC/APC single-mode: different connector/polish interface.
• 70/30 LC/UPC OM4: different fiber mode and wavelength assumptions.
• 20/80 LC/UPC single-mode: different ratio and path limits.

Do not copy a sibling's fiber, wavelength, IL, return-loss, lead-length or application fields into this page merely because the housing looks similar.

Potential fit and non-fit conditions

Potential fit — project validation required

• A design that intentionally needs one nominal 70% output and one nominal 30% output.
• A protected host tray, panel or enclosure designed for the approved tube and 0.9 mm lead construction.
• LC/UPC mating interfaces on every terminated path.
• A buyer who can close both output-path budgets and approve the required test/document scope.

Do not approve this working SKU when

• the design requires a balanced 50/50 split or another unequal ratio;
• SC/APC, LC/APC or another connector/polish is required;
• the system requires a different fiber mode or a wavelength window not supported by the final datasheet;
• the host cannot protect the tube and leads or meet the approved routing limits;
• the physical 70% and 30% outputs cannot be identified and recorded;
• procurement requires a drawing, report or compliance document that has not been issued for this exact model.

CATV, FTTx, LAN, monitoring, test access, GPON, XGS-PON and named-equipment compatibility remain TBC — project and link-budget review required. They must not be published as blanket applications from the current source set.

Testing and quality-control record

The source draft states that a coupler report exists, but it was not included in the supplied folder. Before releasing measured or guaranteed values, the product and QA owners should provide a controlled record that includes:

• final model code and drawing revision;
• serial number or batch/lot identification;
• input and output port labels;
• operating/test wavelengths;
• 70% and 30% path IL with stated limits;
• ratio/tolerance definition and calculation method;
• return loss, directivity, PDL, uniformity or excess loss only when required;
• whether the path includes connectors/adapters;
• reference method, instrument, calibration status and uncertainty where applicable;
• per-unit or sampling scope, reviewer, date and exception disposition.

A sample result may be useful evidence for the identified unit, but it must not be converted into a production-wide guarantee without an approved specification and acceptance plan.

Packaging and procurement information

Information required for an RFQ

Send one configuration record containing:

1. Model/reference: FBT-1x2-SM-0.9-LCUPC-70-30, pending final owner approval.
2. Required topology and the physical route that must receive the 70% and 30% outputs.
3. Operating wavelength or window and the maximum/minimum power conditions for both paths.
4. LC/UPC interface count and every mating adapter/equipment interface.
5. Exact fiber standard, 0.9 mm construction, lead colors/labels and input/output lengths.
6. Tube/package dimensions and host tray, panel or enclosure constraints.
7. Required IL, ratio tolerance, return loss, directivity and other acceptance limits.
8. Test method, report scope, sampling plan, serial/batch traceability and required approvals.
9. Required datasheet, drawing, test record and compliance documents.
10. Quantity, destination, target schedule, packaging/label requirements and sample-approval needs.

Downloads

• Controlled exact-model datasheet: TBC — source required.
• Dimension and port-map drawing: TBC — source required.
• Model/build test report: TBC — source required; the report referenced in the source draft was not supplied.
• Model-level compliance evidence: TBC — source required.