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Material, explained

APC and UPC polish.

Also written Angled physical contact, Ultra physical contact, Green and blue connectors.

What is the difference between APC and UPC connectors?

The polish is the shape of the ferrule face. An ultra physical contact face is domed square to the fibre; an angled physical contact face is cut at 8 degrees so reflections escape the core. That angle buys a return loss of typically 60 decibels against around 50 for UPC. APC is green, UPC is blue, and the two polishes must never be mated.

Defined by IEC 61755, which specifies the optical interfaces for the two polishes, published by IEC.

TeraSPEED LC/UPC to Unconnectorized, Fiber Pigtail, 0.9 mm SBJ, a APC and UPC polish part supplied by Data Systems
APC and UPC polish in the catalogue: TeraSPEED LC/UPC to Unconnectorized, Fiber Pigtail, 0.9 mm SBJ, FBWLCUC11. Catalogue photograph.

Published by Data Systems, network material suppliers in Secunderabad, Hyderabad since 1984, which is forty years of experience with these parts. Written from the standards named above. Last checked 2026-08-14. How we check this, and what we got wrong.

Data Systems, a network material supplier in Secunderabad, Hyderabad since 1984 with branches in Vijayawada and Visakhapatnam, supplies APC and UPC polish across India through official channels. Send a list, get one quote.

Fibre Cable

Fibre Patch Cord

Fibre Pigtail

Single-mode Duplex Fibre Adaptor / Coupler - SC-SC APC

Single-mode Fibre Pigtail / Simplex Lead - SC

Single-mode Simplex Fibre Adaptor / Coupler - SC-SC APC

Single-mode Simplex Fibre LIU / ODF Panel - 12 Port/Core SC

Single-mode Simplex Fibre LIU / ODF Panel - 6 Port/Core SC

Where it is used

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Data Systems · +91 99595 55222 (call or WhatsApp) · admin@datasystems.co.in · Secunderabad (HQ) · Vijayawada · Visakhapatnam · Mon to Sat, 9:30 to 7

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