WMSIC Electronic Components

CJ CJSMF90A

ModelCJSMF90A
PackageSOD-123FL
BrandCJ
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 26+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
CJ CJSMF90A
Type
CJ
Minimum package
3000 卷

Technical parameters

Electronic Component
Electronic Component
Electronic Component
CJ
Electronic Component
CJSMF90A
Electronic Component
1
Package
SOD-123FL
Electronic Component
Electronic Component
Type
TVS
Electronic Component
ESD and Surge Protection (TVS / ESD)
Electronic Component
0.045g
Electronic Component
1
Electronic Component
BM0264898171
Voltage
144.5V
Current(Ir)
5uA
Voltage(VBR)
110.92V
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.

CJSMF90A 产品概述

一、产品简介

CJSMF90A 是江苏长电(CJ)推出的一款单向硅瞬态电压抑制器(TVS)。该器件针对脉冲过电压(雷击、开关瞬变等)提供高速、可靠的钳位保护,典型封装为 SOD-123FL,小型化且适合表面贴装。其标称峰值脉冲功率为 200W(10/1000μs),适用于需要中等能量冲击抑制的电源与信号线路保护场合。

二、电气参数要点

  • 极性:单向(unidirectional),针对直流或单向脉冲保护设计。
  • 反向截止电压 V_RWM:90V(稳态工作电压,器件在此电压下为高阻态)。
  • 击穿电压 V_BR(典型):110.92V(器件进入雪崩导通的电压范围)。
  • 钳位电压(在指定脉冲下):144.5V(10/1000μs 波形下钳位后的电压)。
  • 峰值脉冲电流 Ipp:1.35A(10/1000μs,对应上述钳位电压)。
  • 峰值脉冲功率 Ppp:200W(标准 10/1000μs 测试条件)。
  • 反向漏电流 Ir:5μA(在 V_RWM 下的典型漏电)。
  • 类型:TVS,封装 SOD-123FL。

三、保护能力与性能解读

CJSMF90A 的 200W 峰值脉冲功率表明其能在 10/1000μs 标准浪涌下吸收较大能量但非持续能量,适合抑制雷击感应与开关瞬变。V_RWM 90V 表示器件可直接用于最高工作电压接近或低于此值的直流线路;当线路电压超过 V_BR(≈111V)时,器件进入雪崩区并迅速导通,将过电压钳制到约 144.5V(在测试波形条件下)。单向结构确保正向瞬变被优先钳位,反向仅为器件的正向导通特性。

漏电流 5μA 表明稳态下对系统负载影响小,适合对泄漏敏感的应用场景。实现有效保护时,应关注脉冲波形(10/1000μs)下的 Ipp 与钳位电压匹配,避免超出器件瞬时承受能力。

四、封装与热管理

SOD-123FL 封装体积小、厚度低,适合空间受限的 PCB 布局。该封装的散热能力相对有限,器件在吸收脉冲能量时热量主要通过焊盘与 PCB 传导至铜箔散逸。布局建议包括:

  • 保护节点到器件的路径尽量短、宽,以降低寄生电感和提升响应速度;
  • 增大量脚与地平面的铜箔,必要时加散热过孔以提升热扩散;
  • 若预期有连续或高频冲击,应考虑并联多只或选择更大功率等级的 TVS。

五、典型应用场景

  • 工业控制与电源总线保护(适用于 48V、60V 等较高直流电压系统);
  • 通讯设备的直流输入与中高电压接口防护;
  • 仪器仪表、安防设备中对瞬态过电压的局部防护;
  • 电池管理与能量存储系统中对短时浪涌的保护(需根据系统最高工作电压评估适配性)。

六、选型与使用建议

  • 确保 V_RWM 大于等于系统正常工作电压且留有余量,避免在稳态下触发击穿;
  • 钳位电压需低于被保护器件的耐压阈值,结合系统容差选择合适的 TVS;
  • 对于更高能量冲击场合,考虑使用高功率 TVS、并联器件或外加限流电阻/熔丝;
  • 在 PCB 布局与焊接工艺上遵从厂商推荐的焊盘与回流曲线,保证可靠焊接与一致性性能。

七、可靠性与注意事项

CJSMF90A 在正确选型与良好布局下可提供稳定的瞬态抑制能力。使用时应注意最大额定脉冲功率与温升限制,避免重复承受超过规格的冲击。存储与焊接过程中遵守防静电与温湿度规范,SOD-123FL 对重复热循环敏感,应参考数据手册给出的回流温度曲线与焊接次数限制。

总结:CJSMF90A 以其 200W 能量级、90V 器件驻留电压和 SOD-123FL 小体积封装,适用于中高直流电压线路的瞬态保护。合理的电压选型与 PCB 散热设计可发挥其快速钳位与低漏电的优势。若需更详细的电气特性曲线、动态钳位测试数据或封装图纸,请参考厂家数据手册。

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