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CJ MA729
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ MA729
- Type
- CJ
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- MA729
- Electronic Component
- 1
- Package
- SOD-323
- Electronic Component
- Switch Diode
- Electronic Component
- 0.029g
- Electronic Component
- 1
- Electronic Component
- BM0257713181
- Current
- 200mA
- Diode
- Electronic Component
- Current(Ir)
- 50uA@30V
- (Vf)
- 550mV@200mA
- Power Dissipation(Pd)
- 200mW
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MA729 产品概述
一、产品简介
MA729 是 CJ（江苏长电/长晶）出品的一款独立式开关二极管，采用 SOD-323 小封装，适用于对体积、开关速度和成本有较高要求的电子设计。该器件在 200mA 工作电流下具有较低的正向压降，反向恢复时间短，适合高速开关与保护场合。
二、主要电气参数
- 耗散功率 (Pd)：200 mW
- 最大整流电流：200 mA
- 直流反向耐压 (Vr)：30 V
- 正向压降 (Vf)：约 550 mV @ 200 mA
- 非重复峰值浪涌电流 (Ifsm)：1 A
- 反向电流 (Ir)：50 μA @ 30 V
- 反向恢复时间 (Trr)：约 3 ns
三、主要特点
- 正向压降低（0.55 V@200 mA），提高整流效率并降低发热；
- 快速恢复（Trr ≈ 3 ns），适用于高速开关和脉冲信号链路；
- 小封装 SOD-323，便于高密度布板与紧凑型产品设计；
- 独立式元件，便于单通道保护或整流应用的布局与替换。
四、典型应用
- 开关电源的小信号整流与钳位；
- 信号线保护与反向保护电路；
- 消费类电子、便携设备、传感器接口等空间受限场合的低功率整流；
- 快速复位或切换场景中的高频脉冲处理。
五、选型建议
- 若电路长期工作接近 200 mA 或有连续高功率需求，需关注封装散热与热降额；必要时考虑更大封装或额定功率更高的型号；
- 若需求更低的正向压降或更高的反向耐压，可选择 Schottky 或更高 Vr 的器件；
- 对于频繁脉冲或冲击电流较大的场合，应评估 Ifsm 1 A 极限，并做好浪涌保护设计。
六、封装与焊接注意事项
SOD-323 为小体积表贴封装，推荐按 CJ 数据手册的回流焊曲线与焊盘设计进行装配，注意焊接热历对器件性能的影响与潮湿敏感性管理。
七、可靠性与品质
CJ（江苏长电/长晶）为国内知名半导体制造商，MA729 在常规应用条件下具备稳定的电气特性。为了确保长期可靠性，建议遵循器件的最大额定值、合理的热管理以及合适的电气保护设计。
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