FBT-1×2-SM-0.9-SCAPC-1585-1M
1×2 Singlemode FBT Splitter, 15/85, SC/APC, 0.9 mm, 1 m
This proposed product record covers one specific build: a 1×2 singlemode fused biconical taper (FBT) splitter with a nominal 15/85 ratio, SC/APC terminations, 0.9 mm leads and a labeled 1 m length. The supplied unit report records ratio and insertion-loss results at 1310 nm and 1550 nm. Confirm the controlled model code, port assignment and current acceptance specification before ordering.

This proposed product record covers one specific build: a 1×2 singlemode fused biconical taper (FBT) splitter with a nominal 15/85 ratio, SC/APC terminations, 0.9 mm leads and a labeled 1 m length. The supplied unit report records ratio and insertion-loss results at 1310 nm and 1550 nm. Confirm the controlled model code, port assignment and current acceptance specification before ordering.
Primary action: Request a current configuration and document review.
Product at a Glance
| Field | This proposed SKU | Evidence status |
|---|---|---|
| Proposed model | FBT-1×2-SM-0.9-SCAPC-1585-1M | TBC — reconcile with label/report codes |
| Component | 1×2 FBT splitter | Observed on product label and report |
| Fiber mode | Singlemode (SM) | Observed in label code |
| Nominal ratio | 15/85 | Observed on label and report |
| Connector | SC/APC | Observed on label/report and in the product images |
| Lead diameter | 0.9 mm | Observed in label/report code |
| Labeled length | 1 m | Observed in label/report code; confirm whether this applies to every leg |
| Package | Steel-tube component with connectorized leads | Visually observed; drawing and dimensions required |
| Reported test wavelengths | 1310 nm and 1550 nm | Observed on the supplied report |
| Dimensions and port map | TBC — source required | Controlled drawing required |
| Operating/storage limits | TBC — source required | Current datasheet/test evidence required |
| Compliance | TBC — source required | Exact-model evidence required |
What the Supplied Unit Report Shows
The photographed report is dated April 10, 2023 and identifies a 1x2 FBT Splitter with part number 1*2-0.9-1M-SC/APC. The table below is a transcription of that report. It describes the photographed unit/report; it is not a substitute for current model acceptance limits.
| Wavelength | Report port | Required ratio | Actual ratio | Insertion loss | Excess loss |
|---|---|---|---|---|---|
| 1310 nm | Port 1 | 15% | 15.42% | 8.21 dB | 0.09 dB reported for the test |
| 1310 nm | Port 2 | 85% | 84.58% | 0.82 dB | — |
| 1550 nm | Port 1 | 15% | 14.97% | 8.35 dB | 0.10 dB reported for the test |
| 1550 nm | Port 2 | 85% | 85.03% | 0.80 dB | — |
The report also records directivity of at least 55 dB.
Measurement boundary: TBC — quality review must confirm the test direction, equipment and calibration status, measurement uncertainty, connector-loss treatment, applicable acceptance limits and whether the photographed report is approved for public download.
Understand the 15/85 Configuration
A 15/85 label identifies the nominal power-share relationship between the two output paths. It does not, by itself, identify which physical lead is the 15% path or the 85% path, and it does not replace path-specific insertion-loss limits. The controlled drawing or port map should identify input, Port 1 and Port 2, including the red/blue lead assignment, before installation or bulk ordering.
Do not apply a generic 1×2 PLC loss table to this FBT build. For family-level ratio, window and package selection, use the FBT splitter category. For a technology comparison, use the PLC vs FBT splitter guide.
Fit and Non-Fit Conditions
This exact build may be shortlisted when the approved design requires all of the following:
- one input and two output paths;
- a nominal 15/85 unequal split;
- singlemode fiber;
- SC/APC terminations;
- 0.9 mm leads;
- a labeled 1 m length; and
- verification at 1310 nm and 1550 nm against project-specific limits.
Do not approve this SKU from the ratio alone. Use another model or request engineering review when the project needs a different port count, ratio, connector/polish, fiber grade, lead diameter, length, package, operating window, temperature range or host-enclosure fit. A PLC splitter may be the more appropriate route for a uniform multi-output architecture; that decision belongs to the approved network design and link budget.
What Must Be Confirmed Before Approval
- Model identity: confirm that the proposed SKU, the product-label code and the report part number refer to the same controlled configuration.
- Port assignment: identify input, 15% path and 85% path, including color/label mapping.
- Optical specification: provide current maximum/minimum limits by path and wavelength; keep specification limits separate from observed sample values.
- Fiber and construction: confirm fiber grade, buffer construction, steel-tube dimensions, lead length for each leg and minimum routing requirements.
- Connector scope: confirm connector polish, quantity, end-face acceptance and whether connector loss is included in each reported limit/result.
- Environment and host: confirm temperature limits, mounting/protection and fit inside the intended tray, box or closure.
- Documents: approve the datasheet, drawing, current sample report format and any applicable compliance evidence.
Difference from Related BWNFiber Pages
| Page | What it should own | What this page should own |
|---|---|---|
| Fiber optic splitter catalog | Technology/package catalog and RFQ routing | One exact proposed model |
| FBT splitter category | FBT family selection, ratios, windows and packages | Exact 1×2 15/85 SC/APC 0.9 mm 1 m configuration |
| 1×2 50/50 bare-fiber FBT product | 50/50 unterminated 2.0 mm build | 15/85 connectorized 0.9 mm build |
| 1×3 FC/APC FBT product | 1×3 FC/APC equal configuration | 1×2 SC/APC unequal configuration |
| PLC vs FBT guide | Technology comparison | Exact product validation |
RFQ Checklist
Send the following in one request:
- proposed SKU or reference model;
- required input/output arrangement and which output is the 15% path;
- required wavelengths and path-specific acceptance limits;
- fiber mode and exact fiber grade;
- SC/APC connector assignment and mating interface;
- lead diameter and required length for every leg;
- host tray, box or closure drawing/space limit;
- quantity, delivery destination and required schedule;
- required datasheet, drawing, sample report and compliance documents; and
- whether a sample is required before bulk approval.
BWNFiber response — TBC by sales/product owner: reviewed order code, confirmed configuration, current available document pack and commercial quotation.
Documents and Downloads
- Current model datasheet:
TBC — source required - Dimension/port-map drawing:
TBC — source required - Approved sample test report:
TBC — publication/redaction approval required - Applicable compliance evidence:
TBC — source and scope required
Do not create placeholder PDFs or reuse another FBT model's documents.
1×2 Singlemode FBT Splitter, 15/85, SC/APC, 0.9 mm, 1 m FAQ
What does 15/85 mean on this 1×2 FBT splitter?
It is the nominal ratio assigned to the two output paths. The supplied report records actual ratios of 15.42/84.58 at 1310 nm and 14.97/85.03 at 1550 nm for the photographed unit. The controlled port map must identify which physical lead carries each path.
Are the report values the specification limits for every unit?
No. They are observed results from the supplied report. Release limits must come from the current controlled datasheet or order specification for the exact SKU.
Does the measured insertion loss include the SC/APC connectors?
The supplied Markdown says it does, and the photographed assembly is connectorized, but the readable report does not document the test setup. Treat connector inclusion as TBC until quality confirms the method and acceptance scope.
Is this a dual-window splitter?
The supplied report records results at 1310 nm and 1550 nm. A controlled datasheet is still required before publishing an operating-window label or bandwidth/tolerance claim.
Can I substitute this model for a 1×2 PLC splitter?
Do not substitute by port count alone. Confirm the approved architecture, ratio, optical budget, wavelengths, package and acceptance limits. This page does not establish interchangeability.
What should I verify before a bulk order?
Approve the exact order code, port/color map, fiber grade, dimensions, path-specific optical limits, connector-loss treatment, test-report format, packaging/labels, sample disposition and deviation process.
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