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UMW SMBJ6.8CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- UMW SMBJ6.8CA
- Type
- UMW
- Minimum package
- 750 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- UMW
- Electronic Component
- SMBJ6.8CA
- Electronic Component
- 1
- Package
- SMB(DO-214AA)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.22g
- Electronic Component
- 1
- Electronic Component
- BM0225775410
- Voltage
- 10.5V
- Electronic Component
- IEC 61000-4-4；IEC 61000-4-2
- Current(Ir)
- 1mA
- Voltage(VBR)
- 6.45V
- 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.
SMBJ6.8CA 产品概述
一、主要参数
SMBJ6.8CA 为双向瞬态抑制二极管（TVS），由 UMW（友台半导体）生产，封装为 SMB（DO-214AA）。关键电气参数如下：
- 钳位电压（Vclamp）：10.5V（在峰值脉冲电流下）
- 击穿电压（Vbr）：6.45V
- 反向截止电压 Vrwm（额定稳压）：5.8V
- 峰值脉冲功率 Ppp：600W（10/1000µs 标准测试）
- 峰值脉冲电流 Ipp：57.1A
- 反向电流 Ir：1mA（在 Vrwm 下）
- 极性：双向（适用于交流或双向浪涌）
二、特性与功能
SMBJ6.8CA 以高速钳位响应、较低钳位电压与高脉冲能量吸收能力为特点。双向结构能够在正负向瞬态事件中对电压进行对称限制，适合保护对地或差分线路。反向漏电较小（Ir≈1mA），利于对低功耗电路的长期防护。
三、典型应用场景
适用于需抑制雷击感应浪涌、开关感应、静电放电（ESD）和快速瞬态脉冲（EFT/Surge）的场合，例如：
- 通信接口与数据线保护（TTL、RS、CAN 等）
- 电源线路和USB、HDMI 等外设接口
- 工业控制、测量设备的输入/输出保护 产品通过 IEC 61000-4-2（静电放电）与 IEC 61000-4-4（电快速瞬变）等抗扰度等级测试，满足工业电磁兼容要求。
四、封装与散热
SMB（DO-214AA）封装便于自动贴装与回流焊工艺，体积适中，可兼顾功率吸收与PCB热传导。为保证脉冲能量的充分吸收与器件可靠性，应在布局上尽量缩短保护器件与被保护回路之间的走线，增加接地面积以提升散热与能量分散。
五、选型与使用建议
- 若被保护电路稳压值接近 5V，Vrwm=5.8V 的 SMBJ6.8CA 可作为有效防护元件，但需确认工作信号幅度与允许漏电范围。
- 注意钳位电压（10.5V）对下游器件的耐压要求，必要时并联低阻抗限流元件或前置吸收器以降低峰值电流。
- 在高脉冲应用中推荐采用宽铜箔与多走线散热设计，并遵循制造商的回流焊曲线与存储条件。
六、可靠性与标准
SMBJ6.8CA 符合 IEC 61000-4-2 与 IEC 61000-4-4 抗扰度规范，峰值 600W 能量吸收与 57.1A 的测试电流表明器件适合承受工业级瞬态冲击。实际应用中应结合具体系统的浪涌能量与重复冲击频率进行验证，确保长期可靠性。
总结：SMBJ6.8CA 是一款面向中低压保护、响应迅速且能量吸收能力强的双向 TVS，适用于对 ESD/EFT 和浪涌有较高防护需求的工业与消费电子场合。在选型与布局时需关注钳位电压、漏电与散热设计，以确保系统整体的稳定与安全。
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