Side by side

LC versus SC

Identify the optical connector family; verify fiber and end-face polish independently.

Computer-generated illustration, not a photograph. — P066 · ConnectorLC fiber connector

How they differ

LC fiber connector Use the manufacturer product reference to confirm the housing. The stylized side/front sketch is an identification aid pending specialist diagram review; color is not enough.
SC fiber connector Use the manufacturer product reference to confirm the housing. The stylized side/front sketch is an identification aid pending specialist diagram review; color is not enough.

At a glance

Source-scoped form facts; counts, variants and unknowns are distinct
Field	LC fiber connector	SC fiber connector
Type	Connector	Connector
Family	Fiber	Fiber
Shape	optical	optical
Nominal contacts	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Positions / cavity span	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Contact rows	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Connector role	optical cable connector (ExactCorning 721-533N-3380B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 721-533N-3380B	optical cable connector (ExactCorning 728-81A0-3330B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 728-81A0-3330B
Key distinction	Confirm the connector family and the optical end-face variant.	Confirm the connector family and the optical end-face variant.

Full evidence ledger and sources ↓

Illustrations are computer-generated with prior AI visual review; independent technical and rights review pending. A comparison is not a compatibility verdict.

This comparison stays within one evidence layer.

All selected records are Connector records. Similar layer does not mean compatible, interchangeable or safe to mate.

Families represented: Fiber

Network comparison / concept only

Body and polish are two fields.

LC or SC does not replace the APC / UPC check.

LC fiber →SC fiber →

Not a general compatibility verdict. S049 · S050 · S504

The reference ledger

Read the same question across.

2 selected records · 14 fields
No score. No compatibility verdict.

On a narrow screen, scroll the table sideways or open the field-by-field reading view below. Illustrations are not a size comparison.

Comparison of selected field notes; source links accompany each documented specification
What you are comparing	P066 / ConnectorLC fiber connector Identification schematic · not to scale · drawing review pending	P067 / ConnectorSC fiber connector Identification schematic · not to scale · drawing review pending
Layer	Connector	Connector
Key distinction	Confirm the connector family and the optical end-face variant.	Confirm the connector family and the optical end-face variant.
Nominal contacts	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Positions / cavity span	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Populated contacts	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Contact rows	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Contact pitch	Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.	Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
Dimensions / axis	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Connector role	optical cable connector (ExactCorning 721-533N-3380B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 721-533N-3380B	optical cable connector (ExactCorning 728-81A0-3330B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 728-81A0-3330B
Coupling / latch	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	push/pull (Named series/reference only, not every family part. AFL SC marketedconnector overview;not universalfamily mechanicaltolerance)S954Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Named series/reference only, not every family part. AFL SC marketedconnector overview;not universalfamily mechanicaltolerance
Keying / polarization	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.	Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
Record layer	Optical connector familyC066A	Optical connector familyC067A
Polish variants	UPC and APC need exact identificationC066A	UPC and APC need exact identificationC067A
Evidence	C066A,C066C,C066D,C066E,C066F,C066G,C066H → Independent review pending	C067A,C067C,C067D,C067E,C067F,C067G → Independent review pending

Read field by field — no sideways scrolling

The same selected records, fields, values and source links as the table. Missing fields remain non-equivalent; no values are merged.

Layer

LC fiber connectorP066 / Connector: Connector
SC fiber connectorP067 / Connector: Connector

Key distinction

LC fiber connectorP066 / Connector: Confirm the connector family and the optical end-face variant.
SC fiber connectorP067 / Connector: Confirm the connector family and the optical end-face variant.

Nominal contacts

LC fiber connectorP066 / Connector: Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
SC fiber connectorP067 / Connector: Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.

Positions / cavity span

LC fiber connectorP066 / Connector: Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
SC fiber connectorP067 / Connector: Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.

Populated contacts

LC fiber connectorP066 / Connector: Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
SC fiber connectorP067 / Connector: Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.

Contact rows

LC fiber connectorP066 / Connector: Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
SC fiber connectorP067 / Connector: Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.

Contact pitch

LC fiber connectorP066 / Connector: Not applicableS049 · S050 · S370 · S504 · S529 · S534 · S530Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.
SC fiber connectorP067 / Connector: Not applicableS049 · S050 · S370 · S529 · S532 · S535Optical connector end: electrical contact/pin quantities are not applicable. Fiber count and internal transmitter/receiver module terminals are different facts.

Dimensions / axis

LC fiber connectorP066 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SC fiber connectorP067 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Connector role

LC fiber connectorP066 / Connector: optical cable connector (ExactCorning 721-533N-3380B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 721-533N-3380B
SC fiber connectorP067 / Connector: optical cable connector (ExactCorning 728-81A0-3330B)S951Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. ExactCorning 728-81A0-3330B

Coupling / latch

LC fiber connectorP066 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SC fiber connectorP067 / Connector: push/pull (Named series/reference only, not every family part. AFL SC marketedconnector overview;not universalfamily mechanicaltolerance)S954Current primary-source scoped values; named examples remain separate and unknowns are not inferred from illustrations. Named series/reference only, not every family part. AFL SC marketedconnector overview;not universalfamily mechanicaltolerance

Keying / polarization

LC fiber connectorP066 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.
SC fiber connectorP067 / Connector: Not recordedNot recorded in a normalized source-scoped field. Consult the exact part/revision; no value inferred from illustrations.

Record layer

LC fiber connectorP066 / Connector: Optical connector familyC066A
SC fiber connectorP067 / Connector: Optical connector familyC067A

Polish variants

LC fiber connectorP066 / Connector: UPC and APC need exact identificationC066A
SC fiber connectorP067 / Connector: UPC and APC need exact identificationC067A

Evidence

LC fiber connectorP066 / Connector: C066A,C066C,C066D,C066E,C066F,C066G,C066H →
Independent review pending
SC fiber connectorP067 / Connector: C067A,C067C,C067D,C067E,C067F,C067G →
Independent review pending

Your next step

Use the distinction in context.

Open the field notes Read source-linked facts and limitations.Compare another pair Start from a common confusion.Check a connection A comparison is not a compatibility verdict.

Continue the distinction

Compare next

Browse every comparison →

ST, SC and LC fiber formsIdentify exterior form only; no optical compatibility result.FC vs ST fiber connectorsDistinguish the documented FC key/adapter arrangements from the ST bayonet example. A hybrid sleeve does not settle polish, fiber type or optical loss.opticalCON DUO versus QUADDoes the fiber system specify opticalCON DUO or QUAD, and how many optical channels are documented? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.SMPTE 304M camera connector versus opticalCON DUO SMPTEDoes the camera link require the SMPTE 304M connector family or the distinct opticalCON DUO SMPTE system? Connector-family identity is only the first layer; implementation-specific electrical and protocol requirements still need exact documentation.BNC vs TNC coaxial connectorsBNC uses bayonet coupling while TNC uses threaded coupling. Connector family, impedance and application still need to be verified independently.DisplayPort connector vs DisplayPort 2.1The full-size DisplayPort connector does not identify the implemented DisplayPort generation, link rate or optional features.

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Add a field note

Evidence behind this page

Scope first. Source second. Approval separate.

10 linked sources · 13 scoped claims · 0 sources with inspection/access flags.

Page scope: Evidence behind the compared records; the editorial comparison still needs separate review.

Assessment 2026-10-22 · earliest scheduled source review 2026-12-30. This is a recorded-date assessment, not a live source check. Page-level independent review is not established by this panel.

Inspect 10 source scopes, access limits and dates

S049 · Fiber Optic Cable Assembly Portfolio

Corning · Manufacturer / product-owner domain · inspected 2026-10-01 · due 2026-12-30

Within inspection window

Scoped support: Availability of LC/SC and UPC/APC variants only; original schematic geometry is pending diagram review.

Not established / limitations: Availability of LC/SC and UPC/APC variants only; original schematic geometry is pending diagram review.

Locator: Versatile Connector Options

S050 · What is an APC Connector and How Do I Test It?

Fluke Networks · Manufacturer / product-owner domain · inspected 2026-10-01 · due 2026-12-30

Within inspection window

Scoped support: Polish distinction, not a field testing or installation certification.

Not established / limitations: Polish distinction, not a field testing or installation certification.

Locator: UPC and APC end-face discussion

S504 · Fluke Networks — direct APC and UPC mating distinction

Fluke Networks · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Direct contact mating of unlike polishes; do not misapply this to a cord with different polishes at its separately compatible ends.

Not established / limitations: Direct contact mating of unlike polishes; do not misapply this to a cord with different polishes at its separately compatible ends. No raw HTML or manufacturer image archive is represented as retained.

Locator: APC versus UPC endface explanation and direct-mating warning; hybrid test-cord discussion

S529 · UniCam high-performance connectors — family sheet 0250 EMEA

Corning · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Dated family and selected order-code observations, not a current-availability claim. Physical study is the photographed multimode ST-compatible family example, not an exact order-code assignment.

Not established / limitations: Dated family and selected order-code observations, not a current-availability claim. Physical study is the photographed multimode ST-compatible family example, not an exact order-code assignment.

Locator: Revision 2018-01-22; printed pp.1, 3–4: photograph CRR1245, single-mode table, LC/SC/ST ordering rows.

S530 · Fiber Optic OEM Products — component ordering guide OEM-064-AEN

Corning · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Only selected part identifiers, declared form, mode and pin/key descriptions. Dimensional fields and loss ratings are not imported. The SC boot-size typo and unlabeled ferrule-size interpretation are quarantined.

Not established / limitations: Only selected part identifiers, declared form, mode and pin/key descriptions. Dimensional fields and loss ratings are not imported. The SC boot-size typo and unlabeled ferrule-size interpretation are quarantined.

Locator: May 2020; printed p.5 ST/FC rows, p.6 LC table, p.9 MT-RJ row.

S532 · UPC or APC? — endface polish comparison

Belden · Unclassified publisher domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Endface geometry and direct physical mating only. No general return-loss values, color-based classification, or rule for non-contact optical-instrument inputs.

Not established / limitations: Endface geometry and direct physical mating only. No general return-loss values, color-based classification, or rule for non-contact optical-instrument inputs.

Locator: Published 2014-08-14; endface geometry and direct-mating warning paragraphs.

S534 · UniCam LC connector kit — 95-200-99

Corning · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Exact product record and listed kit contents; the shared family image is not an exact 95-200-99 specimen. Security-key field is not treated as absence of mechanical orientation features.

Not established / limitations: Exact product record and listed kit contents; the shared family image is not an exact 95-200-99 specimen. Security-key field is not treated as absence of mechanical orientation features.

Locator: Product heading and Package Contents. Linked UniCam family image separately inspected; no exact-part image assigned.

S535 · UniCam SC connector kit — 95-200-41

Corning · Manufacturer / product-owner domain · inspected 2026-10-11 · due 2027-01-09

Within inspection window

Scoped support: Exact product record and kit contents are separate from the shared family photograph. The illustrated SC family example is not labelled 95-200-41 or assigned a polish.

Not established / limitations: Exact product record and kit contents are separate from the shared family photograph. The illustrated SC family example is not labelled 95-200-41 or assigned a polish.

Locator: Product heading and Package Contents; linked UniCam family photo, middle SC example, visually inspected.

S951 · AFOP FastShip Connector and Adapter Ordering Guide OEM-064-AEN

Corning · Manufacturer / product-owner domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: Exact named connector/subassembly construction and named no-logo option; keep each role separate.

Not established / limitations: Direct download403 and drawing/photo pixels unavailable. Table126/127micrometre ferrule-size values are not imported as outer ferrule diameters; unspecified SCboot3micrometre transcription is excluded. Table colors are exact-part descriptors, not general family marks.

Locator: Full18-page PDF text: p.5ST/FC/SC,p.6LCno-logo variants,p.9MT-RJ,p.11ST/FCsubassemblies,p.18revision.

S954 · Adapters and Connectors:Connectors

AFL Hyperscale · Unclassified publisher domain · inspected 2026-10-22 · due 2027-01-20

Within inspection window

Scoped support: AFL marketed connector-series examples: stated ferrule nominal sizes and coupling mechanisms; no exact orderableSKU.

Not established / limitations: Ferrule dimensions refer to AFL overview context, not universal housing/mating tolerances. Image-only latch/body observations remain labelled manufacturer illustrations; no measurements,partmarkings or performance from pixels.

Locator: Full manufacturer page: LC,SC,ST,FCsections and each directlylinked connector image; all4actual JPEGs downloaded/viewed.

Trace 13 claims to their source records

C066A · P066

Corning lists LC fiber connections in both UPC and APC variants. Connector family and end-face polish are separate identification requirements.

Claim scope: Named standard or manufacturer description only; procedural checks are editorial recommendations, not hardware tests.

Source links: S049 · S050 · Evidence trail → (private workspace)

C066C · P066

Fluke Networks distinguishes APC and UPC endfaces and warns against directly mating the two polishes because the ferrules do not align properly and damage can result. A hybrid cord whose two ends each match their respective ports is a different question.

Claim scope: V121 named-product or explicitly scoped manufacturer distinction only; no wiring instruction, independent engineering approval or end-to-end compatibility guarantee.

Source links: S504 · Evidence trail → (private workspace)

C066D · P066

Corning’s 2018 UniCam ordering table distinguishes the single-mode LC UPC part 95-200-99 from LC APC part 95-200-94.

Claim scope: Those two dated order-code rows only; an LC shell or its color does not select a polish or establish a link.

Source links: S529 · Evidence trail → (private workspace)

C066E · P066

Corning lists a trigger, crimp band and three boot options in the package contents for UniCam LC kit 95-200-99.

Claim scope: Package components for that product record, not a guarantee that every loose or assembled LC connector has those parts. Boot sizes are not imported as connector dimensions.

Source links: S534 · Evidence trail → (private workspace)

C066F · P066

Corning’s OEM guide identifies 740-0085-006-B as a duplex LC/LC adapter with an SC cutout.

Claim scope: Printed page 15. SC describes the listed panel cutout; the listed optical connector interfaces are LC/LC. No panel dimensions or mating approval inferred.

Source links: S530 · Evidence trail → (private workspace)

C066G · P066

AFL lists a nominal 1.25 mm ferrule for its LC connector overview. AFL describes simplex/duplex LC variants.

Claim scope: AFL LC marketedconnector overview;not universalfamily mechanicaltolerance;ferrulesize is not outerhousingdimension,contactpitch or sourceimage measurement.

Source links: S954 · Evidence trail → (private workspace)

C066H · P066

Corning OEM-064-AEN lists 721-533N-3380B as: Simplex LC, with clip, APC, no-logo option; green housing/boot, white dust cap.

Claim scope: Exact named Corningpart/subassembly inMay2020catalog;no universalfinish,matingdimension or assemblyapproval.

Source links: S951 · Evidence trail → (private workspace)

C067A · P067

Corning lists SC fiber connections in both UPC and APC variants. Connector family and end-face polish are separate identification requirements.

Claim scope: Named standard or manufacturer description only; procedural checks are editorial recommendations, not hardware tests.

Source links: S049 · S050 · Evidence trail → (private workspace)

C067C · P067

Corning’s 2018 UniCam SC table lists 95-200-41 for single-mode OS2 and a separate SC APC single-mode OS2 entry, 95-200-44.

Claim scope: Exact dated ordering entries. No inference about an unidentified SC end, stock availability, cable transmission or mating fit.

Source links: S529 · Evidence trail → (private workspace)

C067D · P067

Belden distinguishes the slightly curved, non-angled UPC endface from the angled APC endface and warns against directly mating the unlike endfaces.

Claim scope: Direct physical UPC/APC mating boundary, applicable when checking an SC connection; not a claim that a documented unlike-ended cable or a non-contact instrument input is itself invalid.

Source links: S532 · Evidence trail → (private workspace)

C067E · P067

Corning lists a shroud, crimp band and two boot options in the package contents for UniCam SC kit 95-200-41.

Claim scope: Exact product text; the linked shared photograph remains a named UniCam family illustration, not proof of this ordered part or its polish.

Source links: S535 · Evidence trail → (private workspace)

C067F · P067

AFL lists a nominal 2.5 mm ferrule for its SC connector overview. AFL describes simplex/duplex SC with push/pull coupling and zirconia ceramic ferrule.

Claim scope: AFL SC marketedconnector overview;not universalfamily mechanicaltolerance;ferrulesize is not outerhousingdimension,contactpitch or sourceimage measurement.

Source links: S954 · Evidence trail → (private workspace)

C067G · P067

Corning OEM-064-AEN lists 728-81A0-3330B as: Simplex SC, APC; green housing/boot/dust cap.

Claim scope: Exact named Corningpart/subassembly inMay2020catalog;no universalfinish,matingdimension or assemblyapproval.

Source links: S951 · Evidence trail → (private workspace)

Prepare this page for review →Read the evidence method →

Recorded evidence only. An inspection date, publisher label, source link or generated packet is not independent technical review, hardware testing, fabrication approval or a compatibility verdict.