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HF HFD4/4.5-LSR HFD4
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HF HFD4 / 4.5-LSR
- Type
- HF
- Minimum package
- 900 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HF
- Electronic Component
- HFD4/4.5-LSR
- Electronic Component
- 1
- Package
- SMD,10x6.5mm
- Electronic Component
- Signal Relay
- Electronic Component
- 1.05g
- Electronic Component
- 1
- Electronic Component
- 3ms
- Electronic Component
- BM0231130886
- Operating Temperature
- 40℃~+85℃
- Contact Resistor
- 100mΩ
- Coil Voltage
- 4.5V
- Coil Resistor
- 203Ω
- 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.
HFD4/4.5-LSR 磁保持继电器产品概述
一、产品简介
HFD4/4.5-LSR 是宏发（HF）推出的一款小型 SMD 磁保持（有极性）继电器，体积仅 10×6.5 mm，额定线圈电压 4.5V。该器件采用单线圈有极性设计，通过改变线圈驱动电流的极性完成置位/复位，具有低线圈功率、响应快、接触可靠等特点，适合对体积、能耗和可靠性有较高要求的便携或嵌入式电子产品。
二、主要特点
- 线圈电压/功率：4.5V，额定线圈功率 100 mW（线圈电阻 203 Ω，典型线圈电流 ≈22.2 mA）。
- 磁保持结构：单线圈有极性，通电后切换并保持省电（仅脉冲驱动即可切换状态）。
- 小型 SMD 封装：10×6.5 mm，便于高密度贴装与自动化生产。
- 快速动作：动作时间 3 ms，释放时间 3 ms，响应快，适合快速切换应用。
- 宽温范围：工作温度 -40℃ ~ +85℃，适应工业级环境。
三、电气与触点性能
- 触点材料：AgNi + 镀金（提高低电平信号可靠性、抗氧化能力）。
- 触点电阻：≤100 mΩ，导通阻抗小。
- 触点容量（电阻性负载）：300 mA @ 125 VAC；1 A @ 30 VDC（额定切换能力按条件计）。
- 最大切换电压：250 V AC，220 V DC。
- 最大切换电流：2 A（短时峰值条件下需参考完整数据表确认）。
说明：常用交流/直流负载应以额定触点容量为准；对于小电流或信号切换，镀金触点可显著提升接触可靠性。
四、典型应用场景
- 智能电表、抄表模块与低功耗测控终端（需要断电保持状态）。
- 物联网设备、无线通信模组、电池供电设备（脉冲驱动节能型切换）。
- 仪器仪表、继电阵列、信号路由与隔离开关。
- 小型功率路由与保护回路（需按额定电压/电流选型）。
五、设计与使用建议
- 驱动方式：因为为有极性单线圈，切换需施加极性相反的脉冲；建议使用 H 桥驱动或带反向脉冲的驱动电路，注意脉冲宽度与能量满足动作时间要求。
- 浪涌与抑制：对线圈进行反向保护或在驱动电路中加入适当的抑制器件，按数据表建议设计以避免影响动作性能。
- 焊接与工艺：SMD 封装支持回流焊，但具体回流曲线与可靠性参数请参阅官方数据手册与推荐焊接规范。
- 负载选择：务必根据负载类型（感性/电阻性）和电压等级选择继电器，并留有余量以延长触点寿命。
六、结语
HFD4/4.5-LSR 以其微小封装、低功耗的磁保持设计和良好的接触材料组合，非常适合要求省电与可靠保持状态的现代电子系统。更多详细的机械尺寸、寿命曲线及安装建议，请参考宏发（HF）官方技术资料与样品测试结果以完成最终设计验证。
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