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CJ CJSMAJ75A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ CJSMAJ75A
- Type
- CJ
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- CJSMAJ75A
- Electronic Component
- 1
- Package
- SMAG
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.111g
- Electronic Component
- 1
- Electronic Component
- BM0233601139
- Voltage
- 119.8V
- Current(Ir)
- 5uA
- Voltage(VBR)
- 92.04V
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
CJSMAJ75A产品概述
一、产品简介
CJSMAJ75A是江苏长电（CJ）生产的一款单向瞬态电压抑制器（TVS），用于抑制电源线或信号线上的瞬态过电压。器件设计用于吸收短时脉冲能量，保护下游器件免受浪涌、电感放电或雷击诱发的高压冲击。
二、主要参数
- 极性：单向
- 反向截止电压(Vrwm)：75 V
- 击穿电压(Vbr)：92.04 V
- 钳位电压(Vc)：119.8 V（典型）
- 峰值脉冲电流(Ipp)：3.3 A
- 峰值脉冲功率(Ppp)：400 W（测试波形10/1000 μs）
- 反向电流(Ir)：5 μA
- 类型：TVS（瞬态抑制）
- 品牌：CJ（江苏长电/长晶）
- 封装：SMAG（表面贴装）
三、特性与优势
- 单向结构适合直流供电系统，响应快速、钳位电压可控，能在瞬间将过电压钳位到安全范围。
- 400 W（10/1000 μs）噪冲能力配合3.3 A峰值脉冲电流，适于吸收常见的线路浪涌与感性负载反向尖峰。
- 低漏电（5 μA）有利于对待机或高阻态电路的能耗管理。
- SMAG表面贴装便于自动化贴装与批量生产，适合体积受限的应用场合。
四、典型应用场景
- 工业与通信48 V/60 V直流母线防护（如交换设备、POE供电端）。
- 工业控制、传感器接口与IO端口浪涌保护。
- 低压逆变器、电源模块以及继电器、感性负载的反向尖峰抑制。
- 电子设备的局部浪涌缓冲与端口保护。
五、选型与注意事项
- 工作电压选型：确保电路静态最大电压低于Vrwm（75 V），留有裕量以避免误触发。
- 钳位匹配：钳位电压119.8 V应低于被保护器件的最大承受电压，否则需选择更低Vc的器件或增加级联方案。
- 热管理：Ppp基于10/1000 μs波形，仅代表短时脉冲能量吸收能力，频繁或长时间冲击需考虑热累积与器件寿命。
- 焊接与工艺：遵循厂家推荐的回流焊温度曲线，避免过热导致性能退化。
六、封装与可靠性
SMAG封装适合表面贴装流程，具有良好的机械强度与焊接兼容性。长期可靠性与ESD/浪涌性能建议参考CJ提供的完整数据手册与相关认证测试报告。
七、结论与建议
CJSMAJ75A定位于中等能量等级的单向TVS保护元件，适合用于48 V级及以下的直流系统和工业接口防护。在选型时重点关注Vrwm与Vc的匹配、脉冲能量容限与散热条件。如需处理更高能量或更低钳位电压的场合，可考虑并联/级联或选用更高Ppp等级的器件，并与厂家技术支持确认具体应用边界。
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