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UMW SMBJ33CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW SMBJ33CA
- Type
- UMW
- Minimum package
- 750 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- 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
- 0.265g
- Electronic Component
- 1
- Electronic Component
- BM0225985222
- Voltage
- 53.3V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1uA
- Voltage(VBR)
- 36.7V
- 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.
SMBJ33CA 产品概述
一、产品简介
SMBJ33CA 是 UMW（友台半导体）推出的一款双向瞬态电压抑制二极管（TVS），用于对抗瞬态过电压与静电放电等电磁干扰，保护敏感电子元件与接口电路。器件响应快，功率吸收能力强，适用于恶劣电磁环境下的过压保护需求。
二、主要电气参数
- 工作反向电压（Vrwm）：33 V
- 击穿电压（Vbr）：36.7 V（典型）
- 钳位电压（Vc @ Ipp）：53.3 V（峰值脉冲电流下）
- 峰值脉冲功率（Ppp）：600 W
- 峰值脉冲电流（Ipp）：11.3 A
- 反向电流（Ir）：1 μA（在 Vrwm 条件下）
- 极性：双向（Bi-directional）
- 类型：TVS 二极管
- 封装：SMB (DO-214AA)
- 防护等级：符合 IEC 61000-4-2（ESD）与 IEC 61000-4-4（EFT）
三、特性与优势
- 双向结构，可同时抑制正负极瞬态，适合交流或双向电平的保护场合。
- 高瞬态能量吸收能力（600 W），能承受短时大电流冲击，保证后端器件安全。
- 低静态泄漏（1 μA），在正常工作状态下对系统无明显影响。
- SMB 封装便于自动化贴装与散热，适配常见工业与通信硬件布局。
- 满足 IEC ESD/EFT 标准，提高系统的抗干扰可靠性。
四、典型应用
- 电源输入、DC/DC 转换器、车载电源保护（需评估汽车级要求）
- 通信接口（RS-485、CAN、以太网端口外侧保护）
- 工业控制设备、测量仪表及楼宇自动化系统的浪涌与静电防护
- 其它需要双向瞬态抑制的信号与电源线路
五、封装与可靠性标准
SMB（DO-214AA）封装，兼顾机械强度与热耗散。器件按工业级可靠性设计，并通过 IEC 61000-4-2/4-4 相关试验规范验证（具体试验等级与条件请参考厂商详细数据手册）。
六、使用建议与注意事项
- 工作电压应低于 Vrwm（33 V），常规设计中建议留有余量以避免长期应力。
- 布局时将 TVS 尽量靠近需要保护的接口或受保护器件，走线最短最粗以降低寄生电感。
- 高频或重复脉冲场合需关注热累积与能量耗散，必要时采用并联或外加限流元件（如熔断器或串联阻抗）进行分流/保护。
- 焊接与回流操作遵循 SMB 封装的热工艺规范，避免因过高温度或重复加热影响可靠性。
- 在车规或更高可靠性需求场合，需确认器件等级并咨询厂方数据手册或应用工程支持。
说明：以上参数为产品主要电气特性摘要，具体典型曲线、极限值与测试条件请以 UMW 官方数据手册为准。
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