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HF HFD2/012-M-L2 HFD2
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HF HFD2 / 012-M-L2
- Type
- HF
- Minimum package
- 25 管装
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- HF
- Electronic Component
- HFD2/012-M-L2
- Electronic Component
- 1
- Electronic Component
- 10.2mm
- Package
- DIP,10.2x20.2mm
- Electronic Component
- Signal Relay
- Electronic Component
- 5.84g
- Electronic Component
- 20.2mm
- Electronic Component
- 1
- Electronic Component
- 4.5ms
- Electronic Component
- BM0257710299
- Operating Temperature
- 40℃~+85℃
- Contact Resistor
- 100mΩ
- Coil Voltage
- 12V
- Coil Resistor
- 720Ω
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
HFD2/012-M-L2 磁保持继电器 产品概述
一、产品简介
HFD2/012-M-L2 是宏发（HF）出品的一款磁保持（latching）继电器，采用紧凑的 DIP 封装（10.2×20.2mm），适合高密度 PCB 安装与批量生产应用。该继电器为有极性单线圈类型，切换后能保持触点状态，从而在长时间保持状态时极大降低功耗，适用于对能耗和体积有严格要求的电子设备。
二、主要性能与参数
- 线圈电压：12V
- 额定线圈功率：150mW
- 线圈电阻：720Ω
- 触点形式与容量（电阻负载）：3A @ 30VDC；1A @ 125VAC；2A @ 30VDC（数据表列出多种典型额定）
- 最大切换电压：250V AC；220V DC
- 最大切换电流：3A
- 接触电阻：≤100mΩ（初始典型值）
- 动作时间：约 4.5 ms；释放时间：约 3.5 ms
- 工作温度范围：-40℃ ~ +85℃
- 封装：DIP，尺寸 10.2×20.2 mm
三、结构与封装特性
HFD2/012-M-L2 采用小型直插（DIP）外形，便于手工和自动化焊接到标准 PCB。磁保持结构使继电器在驱动脉冲结束后仍保持最后状态，无需持续通电，利于低功耗系统设计。由于为有极性单线圈设计，切换脉冲需注意极性控制以实现设定/复位。
四、典型应用场景
- 低功耗遥控与物联网终端：利用磁保持特性减少常态能耗
- 工业控制与仪表：需保持状态而断电后仍保持设定的场合
- 安防与门控系统：状态记忆与快速切换
- 小电流继电控制、信号切换、电源路径选择等场合
五、设计要点与使用注意事项
- 极性控制：单线圈有极性磁保持继电器需用双极性脉冲（或 H 桥驱动）来切换设定/复位，使用时应保证脉冲幅值与极性正确。
- 冲击与浪涌保护：开关感性或高电压负载时需在触点两端并联合适的 RC/MOV 或 TVS，防止电弧增大与触点烧蚀。
- 热与电流裕量：工作在高温或连续切换情况下应考虑触点发热与寿命，尽量按额定负载或以下使用，直流感性负载需进一步降额处理。
- 可靠焊接与机械固着：DIP 插装后建议进行机械固定，避免振动导致焊点或继电器松动影响寿命。
- 接触电阻与寿命：实际应用中接触电阻会随使用次数和负载类型变化，敏感电路建议在触点之前加入缓冲或隔离。
六、选型建议
若系统要求长时间保持开/关状态且能量资源有限，HFD2/012-M-L2 是合适的选择；需要注意驱动电路需具备极性反转能力。若主要用于高电流或强感性负载，请考虑更高额定电流或带有专门触点保护的继电器型号。
总体而言，HFD2/012-M-L2 提供了体积小、保持状态低耗能、适配 PCB 安装的解决方案，适合多种要求状态记忆与低功耗的嵌入式与工业控制场景。在设计中应重视驱动方式、负载保护与热管理，以保证长期可靠运行。
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