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Littelfuse SMBJ7.5CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Littelfuse SMBJ7.5CA
- Type
- LITTELFUSE
- Unit
- Electronic Component
- Minimum package
- 3000
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LITTELFUSE
- Electronic Component
- SMBJ7.5CA
- Electronic Component
- 1
- Package
- DO-214AA
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.202g
- Electronic Component
- 1
- Electronic Component
- BM0227126254
- Operating Temperature
- 55℃~+150℃
- Voltage
- 12.9V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-5；IEC 61000-4-2
- Current(Ir)
- 100uA
- Voltage(VBR)
- 8.33V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMBJ7.5CA（Littelfuse）产品概述
一、产品简介
SMBJ7.5CA 是 Littelfuse（美国力特）出品的一款双向瞬态电压抑制（TVS）二极管，封装为 SMB（DO-214AA）。该器件针对瞬态过电压与浪涌脉冲提供高能量吸收能力，适用于需要高可靠性和工业级温度范围的场景。典型描述：TVS 二极管 SMBJ7.5CA，工作电压 7.5V (Vrwm)。
二、主要参数
- 钳位电压（Vc，典型）：12.9V
- 反向截止电压 Vrwm：7.5V
- 击穿电压（Vbr）：8.33V
- 峰值脉冲功率 Ppp（10/1000μs 或 8/20μs 视规格）：600W
- 峰值脉冲电流 Ipp：46.6A
- 反向电流 Ir：100μA
- 极性：双向
- 工作温度：-55℃ ~ +150℃
- 封装：DO-214AA（SMB）
- 防护等级/符合标准：IEC 61000-4-2（静电放电）、IEC 61000-4-4（浪涌/快速瞬变）、IEC 61000-4-5（雷击/浪涌）
三、产品特点
- 高能量吸收能力，峰值脉冲功率达 600W，能承受较大浪涌冲击。
- 双向结构，适用于交流或双向信号线路的瞬态保护，无须外加极性区分。
- 宽温工作范围（-55℃ 至 +150℃），满足汽车级及工业级环境需求。
- 低漏电流（100μA 级）在正常工作电压下保持低损耗，适合对静态功耗敏感的系统。
- 符合多项 IEC 抗扰度标准，适用抗静电、雷击和快瞬变干扰的设计要求。
四、典型应用场景
- 电源输入端、直流/交流供电总线的过压保护。
- 通信设备、基站、路由器、电源适配器等电子设备的浪涌防护。
- 汽车电子系统（需参考 AEC-Q 要求时确认等级），车载充电/点烟器线路保护。
- 工业控制、PLC、仪器仪表以及需要抗干扰的现场总线接口。
五、设计与选型建议
- Vrwm（7.5V）应高于正常工作电压且低于被保护器件最大耐压；若保护 5V 系统，SMBJ7.5CA 是常见选择。
- 关注钳位电压 12.9V 是否在被保护器件可承受范围内，若低压器件对浪涌敏感可加串联阻抗或滤波网络配合。
- 峰值脉冲电流（46.6A）与系统可能遭受的浪涌幅值匹配，必要时并联多个器件或增加限流元件以提升能量分担。
- 布局上尽量将 TVS 靠近需要保护的接口或电源引脚，走线短且粗，减小寄生电感以获得更好的瞬态响应。
六、安装与可靠性
- 封装为 DO-214AA（SMB），兼容常见 SMT/插件混合安装工艺，推荐按照厂方焊接曲线与回流参数进行装配。
- 在苛刻环境（高温、高湿或振动）中应用时，应依据实际使用条件进行可靠性评估与老化试验。
- 储存与搬运注意防潮防静电，开封后尽快使用并参考生产批次的存储期限。
如需完整电气特性曲线、脉冲波形下的钳位特性、封装尺寸图或可靠性认证报告，可提供具体文件型号，我将为您检索并整理详细数据表与应用参考。
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