FC UPC Bare Fiber Adapter Specifications at a Glance
Catalogue figures for the standard Evolux build. Interface, body style and buffer size are configurable per order.
| Connector type | FC/UPC (male) |
|---|---|
| Applicable fiber | Single-mode 9/125µm |
| Ferrule bore diameter | 123µm ~ 127µm |
| Buffer / cable diameter | 250µm & 900µm |
| Insertion loss (typical) | ≤0.2dB |
| Repeatability | ≤0.2dB |
| Durability | >1000 mating cycles |
| Operating temperature | -40°C to +85°C |
| Storage temperature | -45°C to +85°C |
| Housing material | Metal |
| Ferrule material | Zirconia ceramic |
| Body style | Square or round |
| Compliance | RoHS |
How the Reusable FC UPC Bare Fiber Adapter Replaces Temporary Termination
A field technician who needs to shoot an OTDR trace on an unterminated fiber has three options: splice on a pigtail, install a mechanical connector, or use a quick-connect test adapter. The first two consume hardware and time on a connection that gets cut off as soon as the reading is taken.
This bare fiber adapter takes the third route. The clamping mechanism holds a 125µm cladding against a zirconia ceramic ferrule, the fiber butts up to the end face, and the FC/UPC interface screws into the instrument port. Typical insertion loss sits at or below 0.2dB, so the trace measures the plant rather than the test interface. When the reading is done, release the clamp, pull the fiber, and load the next one. Nothing is consumed and nothing is left behind in the plant.
Rated life is more than 1000 mating cycles at ≤0.2dB repeatability. Treated as a tool rather than a consumable, one unit will carry a crew through a full installation season of reel acceptance, splice verification and fault tracing. Both 250µm coated and 900µm tight-buffered fiber load into the same body, so nobody has to carry two versions in the kit.
Why Project Buyers Choose the Evolux Wholesale Bare Fiber Adapter
What the specification above actually changes on a job site, and why buyers order these bare fiber adapters by the carton rather than by the piece.
Loss you can subtract instead of chase
Insertion loss is bounded at ≤0.2dB typical and repeatability holds the same ceiling from one insertion to the next. That lets the test interface be treated as a fixed offset in the loss budget, so two technicians testing the same span on different days get comparable numbers, and a contested acceptance result does not turn into a re-test argument with the contractor.
1000+ cycles instead of one termination
Every pigtail spliced on for a temporary reading costs the pigtail, the sleeve, and ten minutes of splicer time that a crew usually only has one of. A quick-connect test adapter rated past a thousand insertions absorbs that same work with no consumables at all, and it takes the splicer off the critical path of the test schedule entirely.
One part number covers both buffer sizes
250µm coated fiber from a loose-tube reel and 900µm tight-buffered fiber from an indoor run both load into the same body, with a 123µm to 127µm bore that seats any standard 125µm cladding. Test kit BOMs get shorter, replenishment gets simpler, and nobody is left holding the wrong variant on a Friday afternoon.
Rated for the weather your crews work in
Specified from -40°C to +85°C operating, -45°C to +85°C in storage. Aerial work in winter and unconditioned equipment rooms in summer are both inside the envelope, and tools left in a van overnight are ready at 7am rather than needing to come back up to spec.
Choosing Between a Bare Fiber Adapter and a Fusion Splice for Field Testing
A quick decision table for engineers specifying a test procedure.
| Consideration | Quick-connect test adapter | Spliced pigtail |
|---|---|---|
| Setup time per fiber | About a minute, strip and cleave only | Splice cycle plus sleeve and protection |
| Consumables per test | None | Pigtail and sleeve, discarded after |
| Reusable | Yes, 1000+ cycles | No |
| Typical loss added | ≤0.2dB, repeatable | Lower, but variable by operator |
| Best suited to | Acceptance testing, troubleshooting, QC benches, emergency restoration | Permanent terminations that stay in the plant |
Rule of thumb: if the connection is going to be cut off the same day, it should not cost a splice.
Inside the Zirconia Ferrule Bare Fiber Adapter Built by Evolux
Alignment comes from a precision zirconia ceramic ferrule with a 123µm to 127µm bore. That tolerance band is the whole reason ≤0.2dB is repeatable rather than occasional: a 125µm cladding seats with minimal lateral offset every single time, so the loss figure does not drift depending on who is holding the tool.
The housing is metal, not moulded plastic. Test gear lives in a van and gets dropped, and a deformed body quietly pulls the bore off centre long before anyone thinks to suspect the adapter. Metal keeps the geometry honest. Square and round bodies are both produced, so the unit matches whatever panel cut-out or instrument bulkhead you already work with.
Loading a fiber, step by step
- Strip roughly 15 to 20mm of buffer or coating.
- Clean the exposed cladding thoroughly with isopropyl alcohol.
- Cleave to length, leaving about 12 to 15mm of bare fiber.
- Insert by pressing the clamp and feeding the fiber through until it sits just past the ferrule end face.
- Release the clamp to lock the fiber in place.
- Trim if it protrudes too far, scoring and breaking flush with the end face.
Six steps, no cure time, no consumables. That is what makes it a replacement for temporary termination rather than an addition to it.
Where the Field Ready FC Bare Fiber Adapter Earns Its Place on Site
Four places an FC bare fiber adapter pays for itself, drawn from how our customers actually deploy them.
OTDR traces and power meter readings
Couples unterminated fiber directly to OTDRs, optical power meters and talk sets for link characterisation and fault location. With the interface contribution capped at ≤0.2dB, events and end loss on the trace belong to the plant, not to the tool.
Cable acceptance and maintenance
Test fiber on the reel before anyone pulls it, verify continuity mid-installation, and confirm splice performance afterwards. A bad reel gets caught before a day of pulling labour goes into it.
Production benches and component QC
Repetitive bench testing of pigtails, patch cords, splitters and assemblies. The 1000+ cycle rating suits a station that runs a full shift on a single unit rather than swapping hardware between batches.
Emergency restoration
Patch a damaged cable temporarily during an outage and get the optical path back in minutes, then schedule the permanent splice properly. Restoration time stops depending on splicer availability.
Tell us the quantity, body style and buffer size you need and the Evolux bare fiber adapter team will come back with price, MOQ and lead time in one reply.
Custom and OEM Bare Fiber Adapter Manufacturing for Project Buyers
If you are sourcing for a branded test kit or a distributor catalogue, the standard build is a starting point rather than a fixed item. Because Evolux runs the tooling, a feasibility answer usually takes a day instead of a round trip through someone else's plant.
- Interface: FC/UPC as listed here, with other connector interfaces produced on the same platform for buyers consolidating a multi-interface test kit.
- Body style: square or round, matched to your panel cut-out or instrument bulkhead.
- Buffer size: 250µm, 900µm, or both across one kit line.
- Branding: your logo, part number and label artwork on the unit and the carton.
- Packing format: bulk carton, retail card, or pre-packed into your finished kit configuration.
Send a drawing, a sample, or a competitor part number and we will confirm what is buildable before you raise the purchase order.
How Evolux Factory Tests Every Bare Fiber Adapter Before It Ships
As the manufacturer rather than a reseller, we test to the specification we publish, so it is an acceptance criterion and not a marketing figure. Insertion loss of ≤0.2dB typical and repeatability of ≤0.2dB are what units are checked against, and the 123µm to 127µm ferrule bore is what makes those numbers hold across a shipment rather than across one hand-picked sample.
Product is RoHS compliant. If your project needs something beyond the standard datasheet, such as a test report written against your own acceptance criteria or a particular declaration format for customs, say so with the enquiry and it gets confirmed before production rather than argued about after shipment.
Packaging and Shipping for Bulk Bare Fiber Adapter Orders
Standard practice is individual protective packing with a ferrule dust cap, cartoned for bulk shipment. Retail card and custom label formats are produced to your specification under the OEM terms above. Since the housing is metal and the ferrule is ceramic, the packing job is dust and end-face protection rather than shock cushioning, which keeps volumetric weight down on air freight.
Air courier, air freight and sea freight are all arranged on request for bulk bare fiber adapter orders. Give us destination, incoterm and quantity and freight options come back alongside the unit price.
MOQ and Lead Times for Wholesale FC UPC Bare Fiber Adapter Orders
Both depend on configuration. A standard FC/UPC build in a stocked body style is not the same order as a custom-branded kit line with dedicated packaging, so rather than publish a figure that will not apply to you, we confirm MOQ and lead time against your actual quantity, body style and branding requirement.
Include those three things in your enquiry and price, MOQ and lead time come back together in a single quotation instead of across four emails. As a wholesale bare fiber adapter supplier we quote tiered pricing, so it is worth stating the annual volume as well as the first order.
FC UPC Bare Fiber Adapter Gallery
Evolux is Your Factory Direct Bare Fiber Adapter Manufacturer and Supplier
Evolux is a dedicated bare fiber adapter manufacturer and OEM supplier, part of Shenzhen Evolux Fiber Co., Ltd, with more than ten years in fiber optic components and FTTx hardware.
You are talking to the plant
As a bare fiber adapter manufacturer we decide ferrule bore, body style, buffer size and packaging against our own tooling. That is why a feasibility question gets a real answer in a day instead of a maybe in a week.
One supplier across the whole kit
Fiber optic connectors, adapters, fast connectors and PLC splitters sit in the same catalogue. Buyers building a test kit or a distributor line place one order, deal with one quality contact and receive one shipment.
Answers a buyer can act on
Technical questions reach people who can confirm a tolerance or a test method directly, not a mailbox. Write to sales@evoluxfiber.com or call +86-755-28169892.
Procurement FAQs About the FC UPC Bare Fiber Adapter
How many times can this adapter be reused before it needs replacing?
Rated durability is more than 1000 mating cycles, with repeatability held at ≤0.2dB across that life. For budgeting, treat one unit as covering an installation season for a single test crew rather than as a per-fiber consumable.
Does it take both 250µm and 900µm fiber?
Yes. Both buffer sizes load into the same body, and the 123µm to 127µm ferrule bore seats any standard 125µm cladding. One part number therefore covers loose-tube reel work outdoors and tight-buffered runs indoors.
What insertion loss should I budget when using it in an OTDR test?
Typical insertion loss is ≤0.2dB and repeatability is ≤0.2dB, so the adapter can be treated as a fixed, bounded offset in the loss budget. Evolux tests against those figures as acceptance criteria, not as nominal values, which is what makes the offset safe to rely on.
Can it be supplied under our own brand and part number?
Yes. As an OEM bare fiber adapter supplier with in-house tooling, Evolux produces custom body style, buffer configuration, label artwork, packing format and full kit assembly to your specification. Send a drawing, a sample or a competitor part number and we will confirm feasibility before you commit.
Is the product RoHS compliant, and what documents ship with an order?
It is RoHS compliant and ships with the standard datasheet. If you need a test report against defined acceptance criteria or a specific declaration format for import clearance, raise it with the enquiry so it is confirmed before production starts.
What do you need from me to quote price, MOQ and lead time?
Target quantity, body style (square or round), buffer size, and any branding or packaging requirement. With those four details Evolux returns price, MOQ and lead time in one quotation instead of a chain of clarification emails.
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