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BORN SMAJ58CA
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ58CA
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ58CA
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Electronic Component
- Type
- TVS
- Electronic Component
- ESD and Surge Protection (TVS / ESD)
- Electronic Component
- 0.116g
- Electronic Component
- 1
- Electronic Component
- BM0230041453
- Voltage
- 93.6V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 64.4V
- 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.
SMAJ58CA — SMA封装双向TVS瞬态抑制二极管产品概述
一、产品简介
SMAJ58CA 是 BORN（伯恩半导体）出品的一款双向瞬态电压抑制器（TVS），采用 SMA（DO-214AC）贴片封装，面向对高能脉冲浪涌保护要求较高的电源与信号线路。其典型反向工作电压（Vrwm）为 58V，专为 48V 级及相近工作电压系统的瞬态防护设计。
二、主要电气参数
- 极性：双向（对称钳位，适合交流或双向浪涌）
- 反向截止电压 Vrwm：58V
- 击穿电压 Vbr（典型）：64.4V
- 钳位电压 Vc（在 4.3A 脉冲下）：93.6V
- 峰值脉冲电流 Ipp：4.3A（10/1000μs）
- 峰值脉冲功率 Ppp：400W（10/1000μs）
- 反向漏电流 Ir：1μA（在 Vrwm 条件下，典型值）
- 类型：TVS 双向
这些参数表明器件在承受典型 IEC/EN 标准的浪涌脉冲（10/1000μs）时能提供可靠钳位，漏电小、稳定性好。
三、封装与机械特性
SMA（DO-214AC）为标准表面贴装封装，具有良好的焊接可靠性和散热通道，适合自动贴装与回流焊工艺。器件为双端两引脚结构，安装空间小，便于在受限板面上靠近受保护节点布局。
四、典型应用场景
- 通信与基站的 48V 电源总线防护
- 工业以太网、PoE 系统的中间保护级
- 电源模块输入端和电池管理系统的浪涌保护
- 直流/DC-DC 变换器输入端、逆变器辅助电路等需要双向浪涌抑制的场合
五、使用与设计建议
- 放置位置：尽量靠近需要保护的接口或供电入点，缩短引线长度以降低寄生电感，提高吸收效率。
- 热管理：SMA 封装受限于体积，若频繁承受大脉冲，应在 PCB 布局中加入散热铜地或热过孔以提升热耗散能力。
- 余量设计：器件 Vrwm 应高于电路最大稳态电压，建议留有 10–20% 余量；钳位电压应确认在受保护元件的耐压之下。
- 并联/串联：若需更高能量承受能力，可采用并联或并步件，但需注意电流均流与热分布。
六、可靠性与注意事项
- 不要长期在超过额定 Vrwm 的条件下工作，以避免升高泄漏和加速老化。
- 在装配与回流焊过程中，按厂家推荐的温度曲线进行，避免超温损伤封装材料。
- 对于关键应用，建议按照实际工况做冲击试验（例如 IEC 61000-4-5）验证系统级防护效果。
SMAJ58CA 以其 58V 的工作电压、400W 的 10/1000μs 能量承受能力和低漏电（1μA）特性，适用于需要紧凑封装且要求可靠双向浪涌抑制的中高压直流与信号系统。选择时请结合系统最大稳定电压、允许钳位电压及热管理条件综合评估。
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