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BORN SMBJ90A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMBJ90A
- Type
- BORN
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMBJ90A
- Electronic Component
- 1
- Package
- DO-214AA(SMB)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.193g
- Electronic Component
- 1
- Electronic Component
- BM0264900539
- Operating Temperature
- 55℃~+150℃
- Voltage
- 146V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 111V
- 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.
SMBJ90A TVS二极管产品概述
一、产品概述
SMBJ90A 是 BORN（伯恩半导体）出品的一款单向瞬态电压抑制（TVS）二极管，专为抑制电源浪涌、雷击和静电放电等瞬态过电压而设计。器件采用玻璃钝化芯片和环氧树脂封装，封装形式为 DO-214AA（SMB），适合表面贴装工艺，可靠性高、寿命长。
二、主要参数
- 极性：单向
- 反向工作电压 Vrwm：90 V
- 击穿电压 VBR：111 V
- 钳位电压（典型/最大）：146 V
- 峰值脉冲电流 Ipp（10/1000µs）：4.1 A
- 峰值脉冲功率 Ppp（10/1000µs）：600 W
- 反向泄漏电流 Ir：1 µA（典型）
- 工作温度范围：-55 ℃ 至 +150 ℃
- 类型：TVS，玻璃钝化芯片，环氧封装
三、关键特性与优势
- 优秀的钳位能力：在大电流脉冲下提供稳定钳位电压，保护后端电路免受过压损害。
- 低泄漏电流：反向漏电小，适合高阻抗电路与待机电流敏感的系统。
- 低电容：对高速信号干扰影响小，适用于部分数据线保护（仍需确认具体电容值以匹配高速接口）。
- 高浪涌承受能力：600 W（10/1000µs）峰值功率，适合电信和电源总线的浪涌防护。
- 封装与工艺可靠：玻璃钝化芯片提高钝化稳定性，环氧封装适合工业级环境。
四、典型应用
- 电信设备的线路和供电保护
- 计算机及外设电源总线与接口保护
- 工业控制和仪表中的浪涌抑制
- 其他需对直流电源或单向电源线进行瞬态过压保护的场景
五、封装与安装
SMBJ（DO-214AA）为 SMB 级表贴封装，适用于常规回流焊工艺。布局时建议靠近被保护节点放置，最短的走线可提高保护效率。焊盘与散热设计应遵循封装制造商推荐的PCB尺寸与铜箔面积，以便于散热与应力释放。
六、使用注意与可靠性建议
- 确认单向器件极性连接，反向工作电压应高于电路最大工作电压且低于器件击穿范围。
- 在高能量冲击场合考虑并联更高能量器件或采用分流/限流元件以延长器件寿命。
- 注意环境温度对漏电流和钳位性能的影响，必要时进行温度裕量设计。
- 存储与焊接请遵循湿敏等级和回流曲线规范，避免封装应力和焊接缺陷。
七、总结与选型建议
SMBJ90A 以其 90 V 的反向工作电压、146 V 的钳位能力和 600 W 的脉冲承受能力，适合用于中高压直流电源线和电信、计算机设备的浪涌保护。选型时应结合电路最大工作电压、允许钳位电压及脉冲能量需求，若需更高浪涌电流或更低钳位，可考虑并联或选择更大功率等级的TVS。若用于高速信号线，请确认器件电容参数以避免信号完整性问题。
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