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MSKSEMI SMBJ33CA
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MSKSEMI SMBJ33CA
- Type
- MSKSEMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MSKSEMI
- Electronic Component
- SMBJ33CA
- Electronic Component
- 1
- Package
- SMB(DO-214AA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.19g
- Electronic Component
- 1
- Electronic Component
- BM0225936497
- Voltage
- 53.3V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 40V
- 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.
SMBJ33CA 产品概述
一、产品简介
SMBJ33CA 是 MSKSEMI（美森科）出品的双向瞬态电压抑制器（TVS），采用 SMB（DO-214AA）封装，面向需要对抗雷击、电源浪涌和静电放电等瞬态过压的保护场景。器件类型为双向，适用于可能出现正、负方向浪涌的电路防护。
二、主要电气参数
- 反向截止电压（Vrwm）：33 V（适配不超过33 V 工作电压的系统）
- 击穿电压（Vbr）：40 V（典型）
- 钳位电压（Vc @ Ipp）：53.3 V
- 峰值脉冲功率（Ppp）：400 W，测试波形 10/1000 μs
- 峰值脉冲电流（Ipp）：11.26 A（对应 10/1000 μs 波形）
- 反向静态漏电流（Ir）：1 μA（常温）
- 极性：双向（双向对称钳位，适合交流或极性可逆场合）
三、保护性能与典型应用
依托 400 W/10/1000 μs 的能量吸收能力和 53.3 V 的钳位电压，SMBJ33CA 适合用于：
- 24 V 工业控制与车载 24 V 辅助电源防护（可承受雷电/浪涌入侵）
- 通信接口、CAN 总线、传感器供电线路的瞬态抑制
- DC-DC 变换器输入/输出端、配电节点的过压保护
双向特性使其在信号线或可能出现反向脉冲的电路中更为可靠。
四、封装与可靠性
采用 SMB（DO-214AA）封装，便于波峰/回流焊贴装与手工焊接，具备良好的机械强度和散热能力。反向漏电低（1 μA），在正常工作电压下对系统无明显影响。需遵循制造商的焊接温度曲线以保证焊点可靠性与器件性能。
五、使用与选型建议
- 选型时将工作电压留有裕度：Vrwm 33 V 适用于标称 24 V 系统或最大不超过 33 V 的线路。
- 布局建议：保护二极管靠近被保护器件或接口放置，最短且宽的走线连接到地/电源回路以降低寄生电感。
- 热与能量管理：避免重复高能量脉冲频繁作用，参考系统热量散逸能力进行脉冲频率控制与保护级联设计。
- 测试与验证：在目标系统中通过实际浪涌和温度条件下验证钳位电压与剩余能量对下游器件的影响。
总结：SMBJ33CA 提供了面向中高能量浪涌的双向保护方案，适合 24 V 级及类似工控/通信场景，对瞬态能量吸收能力强、钳位控制明确，是实用且可靠的TVS器件选择。
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