WMSIC Electronic Components

HF HFD3-V/5 HFD3

ModelHFD3-V/5
PackageDIP,15x7.5mm
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 HFD3-V / 5
Type
HF
Minimum package
40 管装

Technical parameters

Electronic Component
Electronic Component
Electronic Component
HF
Electronic Component
HFD3-V/5
Electronic Component
1
Package
DIP,15x7.5mm
Electronic Component
Signal Relay
Electronic Component
3.25g
Electronic Component
1
Electronic Component
6ms
Electronic Component
BM0257416549
Operating Temperature
40℃~+85℃
Contact Resistor
100mΩ
Coil Voltage
5V
Coil Resistor
125Ω
Coil Type
Coil
Electronic Component
Ag Ni+

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

HFD3-V/5 产品概述

一、产品简介

HFD3-V/5 是宏发(HF)出品的一款小型信号继电器,封装为 DIP(15 × 7.5 mm),适用于需要高耐压与低功耗驱动的信号切换场合。该继电器采用 AgNi+镀金触点,兼顾导通性能与抗氧化能力,线圈工作电压为 5V,线圈功耗仅 200 mW,特别适合便携、电池供电或密集布板的控制系统。

二、主要技术参数

  • 线圈电压:5 V DC
  • 线圈电阻:125 Ω(直流)→ 线圈电流约 40 mA,线圈功率约 200 mW
  • 线圈类型:有极性(单线圈),接线时注意极性
  • 触点形式与材料:AgNi + 镀金
  • 接触电阻:≤100 mΩ
  • 触点容量(电阻性负载):
    • 10 mA @ 1000 VDC
    • 2 A @ 30 VDC
    • 500 mA @ 125 VAC
    • 1 A @ 277 VAC
  • 最大切换电压:1.5 kV DC;1 kV AC
  • 最大切换电流:4 A(峰值/瞬态)
  • 动作/释放时间:6 ms / 6 ms
  • 工作温度范围:-40 ℃ ~ +85 ℃

三、结构与封装

继电器采用 DIP 插装式封装,外形尺寸为 15 × 7.5 mm,适合通用波峰/回流焊与手工焊接安装。紧凑尺寸方便在空间受限的板级信号切换应用中替代较大的继电器。封装上标注极性,装配与焊接时请核对引脚与极性方向。

四、性能特点

  • 低功耗:200 mW 线圈功耗,适合功耗敏感系统。
  • 高耐压:支持最高 1.5 kV DC 切换,适合高压信号隔离与测量场景。
  • 快速响应:动作/释放时间均为 6 ms,适合多数信号级别的快速切换。
  • 良好接触可靠性:AgNi+镀金触点兼顾抗氧化与低接触电阻,提升微安至安级信号切换稳定性。
  • 宽温特性:-40 ℃ 至 +85 ℃,可用于工业及户外环境。

五、典型应用场景

  • 通信设备中的高压信号切换与线路选择
  • 仪器仪表与测试测量设备(高压绝缘/隔离测试)
  • 工业控制与遥测模块的信号路由
  • 继电保护、测量开关以及需要低功耗、多路复用的小型系统

六、使用与注意事项

  • 线圈为有极性设计,外部驱动时务必确认极性(反接可能损坏线圈或内部抑制元件)。若不确定继电器是否内置抑制二极管,请在驱动端加装外部反向并联二极管或 RC 抑制器以吸收反向浪涌(对直流驱动尤为重要)。
  • 最大切换电压与电流为器件极限值,长期使用应参照额定触点容量选择工作点并做适当降额。高压 DC 切换时特别注意爬电距离与绝缘要求。
  • 对于感性负载(线圈、电感、电机等),建议并联吸收器(RC、TVS、缓冲电路)以减少电弧、延长触点寿命。
  • 波峰/回流焊温度与时长请参照厂商详细焊接规范,避免超温损伤内部结构。
  • 安装时避免靠近强热源或强磁场,以免影响动作性能与寿命。

七、典型计算与选型提示

  • 线圈电流计算:I = 5 V / 125 Ω = 40 mA,确认驱动器可持续提供 40 mA 的稳定电流。
  • 若需切换 30 VDC 电阻负载,可直接按额定 2 A 使用;若为感性/容性负载,应降低电流或增加抑制措施。
  • 在高压(≥1 kV)应用中,除满足最大切换电压外,还应检查 PCB 的爬电与空气间隙,必要时采用灌封或间隔加高工艺。

品牌型号:HF (宏发) HFD3-V/5。该产品凭借小体积、低功耗与高耐压性能,是板级信号切换与高压隔离场合的常用选择。购买与设计前建议参阅厂商完整数据手册以确认所有机械与环境限制。

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