Model & package intelligence
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MCC SMAJ30CAHE3-TP SMAJ30CAHE3
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MCC SMAJ30CAHE3-TP
- Type
- MCC
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MCC
- Electronic Component
- SMAJ30CAHE3-TP
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.112g
- Electronic Component
- 1
- Electronic Component
- BM0227092238
- Operating Temperature
- 55℃~+175℃
- Voltage
- 48.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 36.8V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ30CAHE3-TP 产品概述
一、产品简介
SMAJ30CAHE3-TP 是美微科（MCC）推出的一款双向瞬态电压抑制器（TVS 二极管），封装为 SMA（DO-214AC）。器件针对瞬态浪涌与静电放电场合设计，额定峰值脉冲功率为 400W（10/1000µs），反向截止电压（Vrwm）30V，钳位电压 48.4V，击穿电压 VBR 约 36.8V，峰值脉冲电流 Ipp 为 8.3A（10/1000µs），反向漏电流 Ir 典型 1µA，工作温度范围 -55℃ 到 +175℃。
二、主要电气参数解读
- Vrwm = 30V：这是器件在稳态条件下允许承受的最大工作电压，适合 24V 及附近电源系统作常态防护。
- VBR ≈36.8V：在测试电流条件下的击穿电压，表示进入导通保护状态的门槛。
- 钳位电压 48.4V（对应 Ipp=8.3A@10/1000µs）：在浪涌冲击时限制被保护节点电压的能力，越低越能更好地保护下游电路。
- Ppp 400W@10/1000µs 与 Ipp 8.3A：表示在10/1000µs波形下能吸收的瞬态能量及对应电流能力，适合工业级雷击/浪涌防护。
- 双向（双极性）结构：对两极方向的过压事件均能吸收，适用于交流或可能反向脉冲的线路。
三、封装与热管理
SMA（DO-214AC）封装体积小、散热路径通过焊盘传导到 PCB，适合自动贴装与回流焊。尽管器件能承受短时大功率冲击，但长期重复浪涌需要良好 PCB 散热（加大焊盘铜厚或铺铜）和合理布局（靠近被保护节点、避免热敏器件周围）。回流焊和焊盘尺寸请参照厂方推荐资料。
四、典型应用场景
- 24V 工业电源及控制系统输入保护；
- 数据与通信接口的浪涌与 ESD 保护；
- 电源管脚、继电器线圈、稳压模块前端的瞬态抑制；
- 工业自动化、楼宇控制、安防等需要抗雷击与高能瞬态抑制的场合。
注意：若为汽车关键平台，应核实是否满足汽车级认证（AEC-Q）与更高的电磁兼容要求。
五、选型与使用建议
- 根据被保护电路的最大工作电压选择 Vrwm，30V 适合 24V 级别；
- 留意钳位电压是否在下游器件耐压范围内，必要时在 TVS 前增加阻抗或串联元件以分散能量；
- 高温环境下漏电流会上升，长时间高温或频繁浪涌需考虑功率余量与热沉设计；
- 若仅需单向保护，可考虑单向 TVS 以降低钳位电压并减少泄漏；
- 安装时遵循厂方焊接工艺与 ESD 操作规范，储存与回流焊温度曲线按数据手册执行。
总结：SMAJ30CAHE3-TP 在 30V 级别电源线和工业接口保护中提供高能量吸收与双向保护能力，是对抗雷击、浪涌与强电磁瞬态的可靠选择。购买与设计时建议参考 MCC 官方数据手册以获取完整测试条件与封装尺寸。
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