Model & package intelligence
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AOTE AT3H4B-CUH-S AT3H4B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- AOTE AT3H4B-CUH-S
- Type
- AOTE
- Minimum package
- 5000 未知
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- AOTE
- Electronic Component
- AT3H4B-CUH-S
- Electronic Component
- 1
- Package
- SSOP-4
- Electronic Component
- Transistor Output Optocoupler
- Electronic Component
- 0.124g
- Electronic Component
- 1
- Electronic Component
- 18us
- Electronic Component
- BM0229306805
- Operating Temperature
- 55℃~+110℃
- Load Voltage
- 80V
- Type
- AC,DC
- Output Current
- 50mA
- Output Type
- Photoelectric Transistor
- Output Channel Count
- 1
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
AT3H4B-CuH-S 产品概述
一、产品简介
AT3H4B-CuH-S 是 AOTE（奥特）推出的一款单路光耦合器，采用光电三极管输出，封装为紧凑型 SSOP-4。器件支持 AC / DC 输入，具有高隔离强度和宽工作温度范围，适用于工业控制、通信隔离及电源信号传输等场合。
二、主要性能参数
- 隔离电压（Vrms）：3.75 kV（加强型隔离，满足常见安全规范）
- 输入类型：AC、DC 均可驱动
- 输出类型：光电三极管（开集电极使用）
- 输出通道数：1 路
- 最大输出电流：50 mA（集电极电流上限）
- 负载电压（VCEO / VCEo 类）：最大 80 V
- 正向压降（Vf）：典型 1.2 V（随 If 变化）
- 电流传输比（CTR）：最高可达 300%（受 If、Vce 与温度影响）
- 集-射饱和电压（VCE(sat)）：约 200 mV（测试条件示例：If=1 mA, Ic=20 mA）
- 上升/下降时间（tr / tf）：18 μs（测试条件：If=2 mA, RL=100 Ω）
- 工作温度范围：-55 ℃ 至 +110 ℃
- 封装：SSOP-4
三、主要特点与优势
- 高隔离电压，适合需要安全隔离的系统设计；
- 高 CTR（高至 300%），在较低输入电流下即可获得较大输出驱动能力；
- 低饱和压降（≈200 mV），在开关导通时损耗小，效率高；
- 支持 AC 与 DC 输入，使用灵活；
- 宽温度范围，适应工业环境；
- SSOP-4 小封装，适合 PCB 空间受限场合并利于自动化贴装。
四、典型应用场景
- MCU 与高压电路之间的信号隔离；
- 开关电源反馈与隔离放大；
- 工业控制信号传输（PLC、传感器隔离）；
- 电信与测量设备的接口隔离；
- 小功率继电器或驱动级前端隔离。
五、使用建议与注意事项
- 输入端应串联限流电阻以控制 If，按照 Vf（约 1.2 V）与目标 If 计算；
- 由于输出为光电三极管结构，通常采用上拉电阻与开集电极配置；若需要驱动接近 50 mA 的负载，建议评估封装功耗与散热条件或后级加入功率晶体管；
- CTR 随温度和光耦老化会变化，设计时建议留有裕量；
- 若需要长时间工作在高温或高电压环境，请参考厂家完整数据手册进行热与电参数校核；
- 引脚为 SSOP-4 紧凑排列，典型为 LED 两脚与晶体管两脚，请在 PCB 布局时预留绝缘间距并遵循制造商推荐的焊盘与爬电距离。
六、封装与采购信息
- 品牌：AOTE（奥特）
- 型号：AT3H4B-CuH-S
- 封装形式：SSOP-4（表面贴装）
- 单通道光耦，适合批量装配与自动化贴片工艺。
如需详细电气特性曲线、引脚图或推荐参考电路，请参考 AOTE 官方 Datasheet 或提供具体应用场景以便给出针对性电路建议。
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