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HF HFD4/12 HFD4
Configuration
1 options
Configuration
Electronic Component
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- HF HFD4 / 12
- Type
- HF
- Minimum package
- 4000
Technical parameters
- Electronic Component
- HF
- Electronic Component
- HFD4/12
- Electronic Component
- 1
- Electronic Component
- 6.5mm
- Package
- DIP,10x6.5mm
- Electronic Component
- Signal Relay
- Electronic Component
- 2.2g
- Electronic Component
- 10mm
- Electronic Component
- 8
- Electronic Component
- 1
- Electronic Component
- 3ms
- Electronic Component
- BM0264086088
- Operating Temperature
- 40℃~+85℃
- Contact Resistor
- 100mΩ
- Coil Voltage
- 12V
- Coil Resistor
- 1.028kΩ
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
HFD4/12 信号继电器产品概述
一、产品简介
HFD4/12 是宏发（HF）出品的一款小型信号继电器，采用 DIP 封装（10 × 6.5 mm），8 引脚、两组转换触点（2C，双刀双掷）。继电器设计用于低功率、低电平信号切换，体积小、响应快，适合通信、测试仪器、控制板和各类电子设备中的信号隔离与切换。
二、主要技术参数
- 线圈电压：12 V
- 额定线圈功率：140 mW（线圈电阻 1.028 kΩ，工作电流约 11.7 mA）
- 触点形式：两组转换（2C，双刀双掷）
- 触点容量（电阻负载）：1 A @ 30 VDC；300 mA @ 125 VAC
- 最大切换电压：250 V AC；220 V DC
- 最大切换电流：2 A（峰值或特殊条件下）
- 触点材料：AgNi + 镀金（提高低电平接触可靠性）
- 接触电阻：≤100 mΩ
- 动作/释放时间：约 3 ms / 3 ms
- 线圈类型：有极性（单线圈）
- 工作温度范围：-40 ℃ ～ +85 ℃
- 封装形式：DIP，8 引脚，封装尺寸约 10 × 6.5 mm
三、性能特点
- 低功耗线圈（140 mW），驱动电流小（≈11.7 mA），便于 MCU 或低功耗驱动电路直接控制或通过小功率驱动器驱动。
- AgNi + 镀金触点对低电平信号（mA 级）有良好接触稳定性，抗氧化、避免接触不良。
- 响应速度快，动作/释放时间约 3 ms，适合一般信号切换需求。
- 小型 DIP 封装，便于通孔 PCB 布局与批量生产装配。
四、典型应用
- 通信设备中的信号路由与隔离
- 仪器仪表与测试夹具的信号切换
- 工控与继电保护中低电平控制回路
- 音频/传感器前端的低噪声开关应用
五、设计与使用注意事项
- 线圈有极性：安装时请根据数据手册确认极性方向；若驱动器带有反向抑制（如二极管），注意与线圈内置抑制元件的兼容。若继电器未内置抑制器，应在驱动器两端并联二极管或 RC 抑制网络以抑制反向电压。
- 驱动计算示例：12 V / 1.028 kΩ ≈ 11.7 mA，功耗约 140 mW，确保驱动器能稳定提供该电流。
- 触点使用时，应遵守额定触点容量（尤其是直流电阻负载 1 A@30 VDC），频繁开关或高电压/高电流场合会加速触点磨损或产生电弧。
- 布局建议：继电器附近留足绝缘和爬电距离，特别是涉及高电压切换时；通孔焊接应保证良好焊点以承受机械应力。
- 建议参考宏发官方数据手册获取完整引脚定义、寿命（机械/电气寿命）和其他详细参数。
六、总结
HFD4/12 是一款面向信号级应用的紧凑型继电器，低功耗、低接触电阻与镀金处理使其在低电平、高可靠性场景表现优异。合理按其额定参数使用并采取必要的抑制与保护措施，可在通信、测试与控制等多种应用中提供稳定的信号切换能力。
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