Инструменты и тестеры для сети
Сетевые кабели Cat5e Ethernet
Кабели Ethernet Cat6
Кабели Ethernet Cat6a
Кабели Cat8
Объемные кабели Ethernet
Разъемы и гнезда
Управление кабелями
OS2 Одномодовый симплекс
OS2 Одномодовый дуплекс
OM3 Многомодовое волокно
Многомодовый OM4
Многомодовый OM2
Многомодовый OM5
Кабели MTP/MPO
Патч-кабели на заказ
Компоненты оптоволоконных кабелей
Средства для чистки и инструменты
Кабели DisplayPort
Кабели Mini DisplayPort
Кабели HDMI
Кабели HDMI Mini/Micro
Кабели DVI
Кабели VGA
Аудио кабели
Кабели Thunderbolt
Кабели USB-C
Кабели USB 3.0
Силовые кабели
Кабели SATA
Последовательные кабели
12 Fiber SC UPC Pigtail, 1m G.652.D Single Mode 
RJ45 RJ11 Network Cable Tester VC468 with Detachable Remote 
Аудиокабель 3.5 мм стерео, 1.8 м – штекер/штекер 
12 Fiber SC APC Pigtail, 1m G.652.D Single Mode 
LC UPC Simplex Field Assembly Mechanical Connector, OM2/OM3/OM4/OM5 Multimode Quick Field Termination Connector 
Basic Definition
LC: Lucent Connector, a small form-factor fiber connector with 1.25mm ceramic ferrule, widely used for SFP/SFP+ optical modules in high-density ports.
UPC / APC refer to fiber end-face polishing types:
- LC UPCFull name: Ultra Physical ContactEnd face: 0° flat with slight convex dome polishing
- LC APCFull name: Angled Physical ContactEnd face: 8° angled bevel polishing
Core Differences
| Item | LC UPC | LC APC |
|---|---|---|
| End-face Angle | 0° vertical convex | 8° angled slope |
| Housing Color | Blue | Green |
| Return Loss (RL) | ≥ -50 dB | ≥ -60 ~ -65 dB |
| Insertion Loss (IL) | 0.2 ~ 0.3 dB | Slightly higher ~ 0.3 dB |
| Reflection Feature | Reflected light returns along the original path | Reflected light deflects into cladding and dissipates |
| Application Scenarios | Data center, enterprise network, multi-mode fiber (OM3/OM4/OM5), general single-mode short/medium transmission | CATV, PON/FTTH, WDM/DWDM, long-haul transmission, reflection-sensitive optical systems |
| Compatibility | Cannot mate with APC directly | Must connect APC to APC only |
Selection Rules
Choose LC UPC (Blue)
- Data center, switch-to-server connection, ordinary fiber transceivers
- OM3/OM4/OM5 multimode fiber links
- Common single-mode links without WDM or analog video signals
Choose LC APC (Green)
- CATV & IPTV broadcast systems
- PON / FTTH fiber access networks
- WDM/DWDM long-distance transmission
- Systems with strict requirements for low reflection and laser service life
Important Note
Do not mix UPC and APC connectors; mismating blue and green connectors will cause severe loss degradation and even damage optical modules. The entire link (patch cord, adapter, device port) must use the same polishing type.
