WMSIC Electronic Components

HF HFD27/005-M HFD27

ModelHFD27/005-M
PackageDIP,20.2x10mm
BrandHF
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 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
HF HFD27 / 005-M
Type
HF
Minimum package
25 管装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HF
Electronic Component
HFD27/005-M
Electronic Component
1
Electronic Component
10mm
Package
DIP,20.2x10mm
Electronic Component
Signal Relay
Electronic Component
6.309g
Electronic Component
20.2mm
Electronic Component
8
Electronic Component
1
Electronic Component
7ms
Electronic Component
BM0257416431
Operating Temperature
40℃~+85℃
Contact Resistor
100mΩ
Coil Voltage
5V

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

HFD27/005-M 信号继电器 产品概述

HFD27/005-M 是宏发(HF)推出的一款小型低功耗信号继电器,采用标准 8 引脚 DIP 封装(尺寸约 20.2 × 10 mm),适用于各种电子设备中的信号切换与隔离场景。该继电器以低额定线圈功率、双刀双掷(2C/DPDT)触点形式以及良好的微弱信号传输性能为主要特点,常见于通信、仪表、控制板和消费电子等领域。

一、主要技术参数

  • 继电器型号:HFD27/005-M(品牌:HF 宏发)
  • 线圈电压:5 V
  • 额定线圈功率:280 mW(线圈电阻 90 Ω,静态线圈电流 ≈ 5 V / 90 Ω ≈ 55.6 mA)
  • 触点形式:两组转换(2C / 双刀双掷 DPDT)
  • 引脚数:8(DIP 封装)
  • 触点材料:AgNi + 镀金(有利于低电平信号的稳定传输与抗氧化)
  • 触点容量(电阻性负载):1 A @ 125 VAC;2 A @ 30 VDC
  • 最大切换电压:240 V @ AC;120 V @ DC
  • 最大切换电流:2 A
  • 接触电阻:≤ 100 mΩ
  • 动作时间:约 7 ms;释放时间:约 4 ms
  • 线圈类型:无极性(单线圈,可不分正负极直接驱动)
  • 工作温度范围:-40 ℃ ~ +85 ℃
  • 封装形式:DIP(尺寸约 20.2 × 10 mm)

二、产品特性与优势

  • 低功耗:280 mW 的线圈功率使其在电池供电或受功耗限制的系统中更适用,驱动电流仅约 56 mA。
  • 小型化封装:标准 8 引脚 DIP,占板面积小,便于在紧凑 PCB 布局中使用,且兼容常规继电器座/插座。
  • 双刀双掷触点:2C 形式提供两路独立转换,适合多路信号同时切换或实现一路切换与一路隔离的应用。
  • 低接触电阻与镀金触点:≤100 mΩ 的接触电阻与 AgNi+镀金处理,有利于低电平信号和音视频等敏感信号的可靠传输,减小接触抖动和氧化带来的接触问题。
  • 快速响应:7 ms 的动作时间、4 ms 的释放时间,适合对响应速度有一定要求的信号切换场景。
  • 宽温度适应性:-40 ℃ 至 +85 ℃ 的工作温度范围,适合工业级环境。

三、典型应用场景

  • 通信设备:信号路由、线路切换、环路隔离等。
  • 仪表与测量设备:低电平信号采集、测量通道切换、继电保护。
  • 控制系统与自动化:控制信号的切换与分配、小功率负载驱动。
  • 消费电子与音视频设备:音频路径切换、输入源选择等(得益于镀金触点对微弱信号的友好性)。

四、使用建议与注意事项

  • 不要超过额定触点容量(1 A@125 VAC / 2 A@30 VDC)与最大切换电压/电流,负载为感性时应适当留有裕量并采用吸收/抑制电路。
  • 线圈为无极性设计,可直接以直流驱动而无需区分正负。但若在驱动回路中并联二极管做钳位,请注意这会使线圈驱动变为有极性,可能影响安装兼容性;建议对交流或无极性驱动场合优先采用 RC 抑制器或双向瞬态抑制器(如 TVS)。
  • 对交流或感性负载(电机、电磁阀等)切换时,建议并联合适的吸收网络(RC、二极管、TVS、浪涌抑制器等)以延长触点寿命并减少电弧。
  • 在频繁切换或接通高浪涌电流的场合,应优先选择额定电流更高的功率继电器或使用加固型触点方案。
  • 焊接时遵循制造商推荐的温度和时间规范(避免过热);存储与使用时注意防潮、防尘。

五、选型与替代建议

若应用需要更高的切换电流、耐久性或特殊功能(保持型/双稳态、固态继电器、光耦隔离等),可根据负载类型与寿命要求选择相应的功率继电器或固态开关。HFD27/005-M 适合于以信号完整性与低功耗为首要考虑的小功率切换场景。

结论:HFD27/005-M 是一款小型、低功耗、适用于微弱信号切换的标准 DIP 信号继电器,兼具快速响应与良好接触特性,适合通信、仪表与控制等需要可靠低电平信号切换的应用场景。在使用时应注意不超载并根据负载类型采取适当的抑制与保护措施,以保证长期稳定运行。

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