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DOWO SMAJ200A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- DOWO SMAJ200A
- Type
- DOWO
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- DOWO
- Electronic Component
- SMAJ200A
- 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
- BM0264866298
- Operating Temperature
- 55℃~+150℃
- Voltage
- 324V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 224V
- 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.
SMAJ200A TVS 二极管（SMA 封装）产品概述
一、主要特性
SMAJ200A 为单向瞬态电压抑制器（TVS），采用玻璃钝化芯片工艺，封装为 SMA（DO-214AC）。该器件对瞬态浪涌具有快速响应能力与优异的钳位性能，符合 RoHS 要求。典型特性包括：峰值脉冲功率 400W（10/1000μs 波形，重复率/占空比 0.01%）、低反向泄漏、单向/双向可选以及宽工作温度范围。
二、电气参数（关键指标）
- 反向工作电压 Vrwm：200 V（稳压/耐压标称值）
- 击穿电压 VBR：224 V（典型）
- 钳位电压 Vc：324 V（在指定峰值脉冲电流下）
- 峰值脉冲电流 Ipp：≈1.23 A（由 Ppp / Vc 得出）
- 峰值脉冲功率 Ppp：400 W（10/1000 μs 波形，0.01% 占空比）
- 反向漏电流 Ir：≈1 μA（在 Vrwm 条件下）
- 工作温度：-55 ℃ 至 +150 ℃
说明：在 10/1000 μs 标准浪涌测试条件下，器件可承受单次或极低占空比的脉冲能量；钳位电压为在峰值脉冲电流作用下的典型压降值。
三、封装与可靠性
SMA（DO‑214AC）表面贴装封装，体积小、便于自动化贴装与回流焊接。玻璃钝化芯片提高了长期可靠性与稳定性，降低表面泄漏和电气漂移。器件适应工业级温度范围，适用于常规环境与较高温度工作条件。符合 RoHS，无铅兼容制造流程。
四、典型应用场景
- 工业电源与电机驱动的输入保护
- 逆变器、UPS 与开关电源的浪涌抑制
- 通信设备、光纤收发模块的线路防护
- 汽车电子（非功能安全关键子系统）与车载外设的瞬态抑制（需按车规验证）
- 各类接口（DC 电源线、外部供电口）防雷击与浪涌
五、选型与使用建议
- 布局：将 TVS 器件尽可能靠近需保护的引脚或连接器，走线短且宽以减少寄生电感；必要时在 PCB 下方布置热通孔以利散热。
- 极性：单向器件在反向（标称 Vrwm）下工作，正向导通用于钳位；双向器件对称钳位用于交流/双向浪涌场合。注意元件丝印/极性环标识。
- 能力使用：Ppp 为脉冲功率峰值，适用于短时浪涌；若存在频繁或长时间浪涌，应在系统层面降低单体负载或选用更高能量吸收方案。
- 热与寿命：连续或高频率浪涌会导致热累积和器件退化，遵循制造商的脉冲重复率与热阻规范进行热设计。
- 测试验证：在最终产品中进行实际浪涌测试（包括 10/1000 μs 和其他可能波形）以确认钳位效果和系统兼容性。
总结：SMAJ200A 是一款适合中高压直流供电及需较高脉冲能量抑制的 TVS 器件，具有快速响应、低泄漏与紧凑封装的优点。选型时请结合实际浪涌幅值、频率与散热条件进行评估，确保长期可靠运行。
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