WMSIC Electronic Components

kinghelm KH-BNC75-3511

ModelKH-BNC75-3511
PackageThrough-hole
Brandkinghelm
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
kinghelm KH-BNC75-3511
Type
KINGHELM
Minimum package
50 盒

Technical parameters

Electronic Component
Electronic Component
Electronic Component
KINGHELM
Electronic Component
KH-BNC75-3511
Electronic Component
1
Package
Through-hole
Electronic Component
Electronic Component
Electronic Component
RFCoaxial Connector
Electronic Component
8.5g
Electronic Component
75Ω
Frequency
3GHz
Electronic Component
1
Electronic Component
BM0264594920
RF
BNC
Operating Temperature
55℃~+155℃
Interface
9.5mm
Interface Type
Electronic Component

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

KH-BNC75-3511 RF射频同轴连接器产品概述

KH-BNC75-3511是金航标(Kinghelm)推出的一款板端弯头内孔射频同轴连接器,专为75Ω阻抗系统的高频信号传输设计,覆盖DC~3GHz频率范围,适配空间受限的PCB板安装场景,广泛应用于广播电视、安防监控、通信设备等领域。

一、产品核心定位与典型应用场景

该连接器聚焦板级射频信号的稳定连接,针对需要紧凑安装、抗恶劣环境的应用需求开发:

  • 广播电视领域:适配有线电视前端设备、卫星接收终端的板端信号接口,满足模拟/数字视频信号的75Ω阻抗匹配;
  • 安防监控系统:用于网络摄像机、硬盘录像机的视频输入输出板端连接,弯头设计避免线缆弯折干涉;
  • 通信设备:适配小型化基站、无线接入点的射频模块板端接口,宽温范围适应户外/工业环境;
  • 工业控制:用于工业传感器、数据采集终端的高频信号传输,抗振动冲击性能满足现场需求。

二、关键技术参数解析

KH-BNC75-3511的核心参数严格遵循射频同轴连接器标准,关键指标如下:

参数项 规格参数 备注说明 连接器类型 板端(PCB端) 直接焊接于PCB板,无需额外转接 接口类型 内孔(母头) 适配标准BNC公头(针式)插拔 端口数量 1 单通道信号传输 接口直径 9.5mm 符合BNC标准接口尺寸,插拔无干涉 频率范围 DC~3GHz 覆盖多数民用/工业射频信号频段 射频系列 BNC(卡口式连接) 插拔快速可靠,锁定结构稳定 阻抗特性 75Ω±2Ω 匹配视频、射频系统的75Ω阻抗要求 安装样式 90°弯头(直角) 节省PCB板空间,避免线缆弯折应力 工作温度范围 -55℃~+155℃ 宽温设计,适应极端环境温度 安装方式 插件式(焊针/焊脚) 直接插入PCB焊盘,焊接固定

注:阻抗公差、工作温度等参数符合GB/T 11313射频连接器相关标准。

三、结构设计与工艺特点

为实现稳定可靠的信号传输,该连接器采用以下设计与工艺:

  1. 紧凑弯头结构:90°直角设计使线缆连接方向与PCB板垂直,减少板上空间占用,避免线缆弯折导致的信号衰减或机械损伤;
  2. 镀金接触件:内孔接触件采用黄铜镀金(镀金厚度≥0.5μm),降低接触电阻(≤10mΩ),提升耐氧化能力,确保插拔1000次以上仍保持稳定接触;
  3. 宽温绝缘体:绝缘体选用PTFE(聚四氟乙烯)材料,介电常数稳定(ε≈2.1),耐高低温性能优异,适应-55℃~+155℃环境;
  4. 抗腐蚀外壳:外壳采用锌合金镀镍处理,表面硬度高、抗盐雾腐蚀(符合GB/T 2423.17盐雾试验要求),提升户外/工业环境适应性;
  5. 插件式安装:焊针/焊脚长度适配1.6mm标准PCB板厚度,焊接时无需额外工具,安装效率高,且焊接后连接牢固,抗振动冲击(符合GB/T 2423.10振动试验要求)。

四、性能优势与可靠性验证

KH-BNC75-3511在实际应用中表现出以下核心优势:

  • 低信号衰减:75Ω阻抗匹配精度高,DC~3GHz频段内插入损耗≤0.2dB(@3GHz),回波损耗≥-20dB,确保信号无失真传输;
  • 宽温可靠性:通过高低温循环试验(-55℃~+155℃,循环50次),性能无衰减,可适应严寒地区、高温车间等极端环境;
  • 插拔稳定性:卡口式BNC连接设计,插拔力适中(5~20N),锁定可靠,避免振动导致的接触不良;
  • 抗干扰能力:同轴结构屏蔽效果优异,屏蔽效率≥80dB(@1GHz),有效抑制电磁干扰(EMI),提升信号抗干扰性。

五、安装与适配注意事项

为确保连接器性能稳定,安装时需注意以下要点:

  1. PCB设计要求:PCB上需预留9.5mm直径的安装孔,焊盘间距与焊针尺寸匹配(参考金航标产品 datasheet);
  2. 焊接工艺:焊接温度控制在260℃以下,每个焊脚焊接时间不超过3秒,避免高温损坏PTFE绝缘体;
  3. 适配接口:仅适配标准BNC公头(针式),禁止与非标准接口强行插拔,避免损坏接触件;
  4. 线缆选择:建议搭配75Ω射频同轴电缆(如RG59、RG6等),确保整体系统阻抗匹配;
  5. 维护检查:定期检查接触件是否氧化、焊脚是否松动,若发现异常及时更换,避免信号故障。

KH-BNC75-3511以其紧凑结构、宽温适应性和稳定传输性能,成为板级射频连接的高性价比选择,可满足多行业对高频信号可靠传输的需求。

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