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DOWO SMAJ64CA
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMAJ64CA
- Type
- DOWO
- Minimum package
- 5000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMAJ64CA
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.12g
- Electronic Component
- 1
- Electronic Component
- BM0257638251
- Voltage
- 103V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 71.1V
- Electronic Component
- Electronic Component
- Electronic Component
- 5000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
SMAJ64CA 产品概述
一、产品简介
SMAJ64CA 是东沃（DOWO）推出的一款瞬态抑制（TVS）二极管，封装为SMA（DO-214AC），用于抑制电路中的瞬态过压与雷击/浪涌脉冲。该型号针对中高工作电压应用设计，能在瞬态事件发生时迅速夹紧电压，保护被保护器件免受击穿或损坏。
二、主要参数
- 极性：双向（注：部分资料或标识为单向，请以供应商规格书或实物为准）
- 反向截止电压 Vrwm：64 V
- 击穿电压 Vbr（典型）：71.1 V
- 钳位电压 Vc（峰值脉冲时）：103 V
- 峰值脉冲电流 Ipp：3.88 A（对应10/1000 μs 波形）
- 峰值脉冲功率 Ppp：400 W @ 10/1000 μs
- 反向电流 Ir：1 μA（在 Vrwm 下）
- 封装：SMA (DO-214AC)
- 类型：TVS
三、关键性能与优势
- 快速响应：瞬态事件发生时在纳秒级别导通，限制过电压幅度，保护下游器件。
- 高能量吸收：400 W（10/1000 μs）脉冲能力，可应对常见浪涌与雷击能量。
- 低漏电：典型反向漏电仅为1 μA，有利于低功耗系统长期工作。
- 紧凑封装：SMA 封装利于自动贴装，适合空间受限的 PCB 布局。
四、典型应用场景
- 48 V/60 V 直流电源保护（如 PoE、通信设备电源输入）
- 工业控制与驱动电源、电源转换器输入端浪涌保护
- 接口与数据线路的过压保护（需结合电路具体幅值评估）
- 电池管理与储能系统的局部保护（注意按最大工作电压选型）
五、封装与可靠性
SMA（DO-214AC）封装适用于回流焊工艺，热性能良好且机械强度适中。建议按照供应商推荐焊接温度曲线进行回流，避免长时间高温以保持器件可靠性。SMA 尺寸易于在多种布局中靠近被保护节点安装，从而提高保护效率。
六、选型与使用建议
- 工作电压匹配：Vrwm（64 V）应高于最大稳态工作电压，留有适当裕量以避免在正常工作时导通。
- 钳位评估：钳位电压（103 V）需小于被保护器件允许的最大承受电压。
- 极性确认：根据电路是否存在反向脉冲选择单向或双向型号，若资料不一致以规格书为准。
- 布局建议：将 TVS 尽量靠近外部引入端或保护点放置，保证低阻抗回流路径至地/对称端。
七、注意事项
- 多次大能量冲击会降低器件寿命，设计时考虑必要的冗余或后备保护。
- 在高频敏感电路中评估 TVS 的寄生电容对信号的影响。
- 购买与使用时以最新的厂家数据表为准，确认极性、波形条件与测试基准。
SMAJ64CA 以其较高的脉冲吸收能力、低漏电与紧凑封装，适合在48 V 左右的工业与通信电源环境中为关键器件提供可靠的浪涌保护。
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