Standard No.:	YD/T 4305.3-2025
English Name:	Optical-electric hybrid connector for telecommunicationPart 3:Type single LC
Chinese Name:	通信用光电混合活动连接器 第3部分：单联LC型
Professional Classification:	YD    Professional Standard - Telecommunication
Source Content Issued by:	MIIT
Issued on:	2025-07-02
Implemented on:	2025-11-1
Status:	valid
Target Language:	English
File Format:	PDF
Word Count:	14500 words
Translation Price(USD):	435.0
Delivery:	via email in 1 business day

YD/T 4305.3-2025 Optical-electric hybrid connector for telecommunication— Part 3: Type single LC 1 Scope This document specifies requirements of the classification, interface graphics and mating dimensions, endfaces, optical and electric performance, materials and environmental compliance, describes related test methods, and specifies quality assessment procedures, inspection rules, signs, packaging, transport and storage for Type single LC optical-electric hybrid connectors (hereinafter referred to as “optical-electric connectors”). This document is applicable to the design, development, production and inspection of Type single LC optical-electric hybrid connector for telecommunication in the application scenarios of park/indoor wireless, office and monitoring. This document may apply to Type single LC optical-electric hybrid connector for telecommunication in other application scenarios. 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. GB/T 2828.1 Sampling procedures for inspection by attributes—Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection GB/T 26572 Requirements of concentration limits for certain restricted substances in electrical and electronic products GB/T 39560 (all parts) Determination of certain substances in electrical and electronic products YD/T 1272.1-2018 Optical fiber connector—Part 1: Type LC YD/T 1272.3-2015 Optical fiber connector—Part 3: Type SC YD/T 2152-2010 The requirement of reliability and test methods for optical fiber connectors YD/T 4305.1-2023 Optical-electric hybrid connector for telecommunication—Part 1: Type SC YD/T 4305.2-2024 Optical-electric hybrid connector for telecommunication—Part 2: Type duplex LC SJ/T 11364-2014 Marking for the restriction of the use of hazardous substances in electrical and electronic product 3 Terms and definitions For the purposes of this document, the terms and definitions given in YD/T 2152-2010 and the following apply. 3.1 type single LC optical-electric hybrid connector LC connector of insertion and removal type composed of a single-core plug and an adapter, which has both optical and electric connection characteristics and is intended to transmit signals and remotely supply centralized power to low-power (≤100W) terminal devices such as WLAN devices and cameras 3.2 reference plug precision manufactured or selected plug for measurement purposes 3.3 reference adapter precision manufactured or selected adapter for measurement purposes 3.4 mating face dimensions dimensions of a part for determining plug/receptacle fit between a set of optical-electric hybrid connector components [Source: YD/T 4305.1-2023, 3.3] 3.5 concentricity error distance between the optical fiber mandrel and the ferrule axis [Source: YD/T 1272.1-2018, 3.4] 3.6 angular alignment error angular offset between the excitation beam axis and the ferrule axis [Source: YD/T 1272.1-2018, 3.5] 3.7 ultra physical contact (UPC) contact with the front endface of the pin polished to a spherical shape, and the fiber endface subject to required geometric dimensions, so as to ensure that the physical endface of the fiber can fully contact when the endfaces of the two connectors are butted, and thus to eliminate the influence of Fresnel reflection from the fiber endface on the system and obtain a return loss greater than 50 dB [Source: YD/T 1272.1-2018, 3.7] 3.8 angled physical contact (APC) contact with the front endface of the pin polished to an angled (8°) spherical shape, and the fiber endface subject to required geometric dimensions, so as to ensure that the physical endface of the fiber can fully contact when the endfaces of the two connectors are butted, and thus to eliminate the influence of Fresnel reflection from the fiber endface on the system and obtain a return loss greater than 60 dB

Contents Foreword i Introduction ii 1 Scope 2 Normative references 3 Terms and definitions 4 Requirements 4.1 Classification 4.2 Interface graphics and mating dimensions 4.3 Other dimensions 4.4 Reference optical-electric connectors 4.5 Appearance and endface of optical-electric connectors 4.6 Optical and electric performance of optical-electric connectors 4.7 Materials 4.8 Restricted substances 5 Quality assessment procedures 5.1 Classification 5.2 Qualification approval procedures 5.3 Quality consistency inspection 6 Parameter testing 6.1 Environmental requirements 6.2 Testing conditions 6.3 Testing methods 7 Environmental and mechanical reliability tests 7.1 Test environment requirements 7.2 High temperature aging test 7.3 Low temperature storage test 7.4 Thermal cycling test 7.5 Humidity aging test 7.6 Damp heat cycling test 7.7 Salt spray test 7.8 Vibration test 7.9 Mechanical shock 7.10 Bending test 7.11 Torsion test 7.12 Tensile strength test 7.13 Tail tension test 7.14 Collision test 7.15 Mechanical durability test 7.16 Repeatability 7.17 Hot swap 7.18 Interchangeability 7.19 Insertion and removal force 8 Inspection rules 8.1 Inspection classification 8.2 End-of-manufacturing inspection 8.3 Type inspection 9 Signs, packaging, transport and storage 9.1 Signs 9.2 Packaging 9.3 Transport 9.4 Storage Annex A (Informative) Outline drawing and dimensions of optical-electric connector plug