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BORN SMAJ43A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN SMAJ43A
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- SMAJ43A
- Electronic Component
- 1
- Package
- 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
- BM0264491092
- Voltage
- 69.4V
- Current(Ir)
- 1uA
- Voltage(VBR)
- 47.8V
- 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.
SMAJ43A 产品概述
一、简介
SMAJ43A 是 BORN（伯恩半导体）推出的一款单向功率级 TVS（二极管瞬态抑制器），专为电源口与高能脉冲防护设计。器件采用 DO-214AC（SMA）封装，适合表面贴装工艺，可在工业、通信与车载辅助电源等场景中，对瞬态过压（雷击、电源浪涌、开关瞬变等）提供有效钳位保护。
二、主要电气参数
- 极性：单向（Unidirectional）
- 反向截止电压 Vrwm：43 V
- 击穿电压 VBR（典型）：47.8 V
- 钳位电压 Vc（在指定脉冲下）：69.4 V
- 峰值脉冲电流 Ipp：5.8 A
- 峰值脉冲功率 Ppp：400 W（10/1000 μs 波形）
- 反向漏电流 Ir：1 μA（在 Vrwm 条件下）
以上参数为典型/额定测试点指标，最终设计请以厂方完整数据表为准。
三、产品特点
- 高能量吸收：支持 10/1000 μs 波形下 400 W 峰值脉冲功率，适合电源口抗浪涌需求。
- 低钳位电压：在峰值脉冲电流下钳位于约 69.4 V，能有效限制被保护电路的过压幅度。
- 低漏电流：在正常工作电压下漏电仅约 1 μA，有利于低功耗系统的长期稳定性。
- 紧凑封装：DO-214AC（SMA）封装，易于自动贴装与批量生产。
四、典型应用场景
- 工业电源输入与配电模块的浪涌保护（24 V/48 V 系统）
- 通信设备、电源适配器与 PoE 端口的过压抑制
- 逆变器、充电器和备用电源的输入保护
- PCB 层面作为一级瞬态保护器件配合熔断器、滤波器使用
注：Vrwm = 43 V 意味着器件适合保护最高静态电压接近该值的线路（如 48 V 系统在允许余量下仍可考虑），设计时务必评估系统最大运行电压和容忍的钳位电平。
五、应用与布局建议
- 接地设计：TVS 应尽可能靠近被保护端与系统接地（或参考地）紧密连接，采用宽、短的接地回路以降低感抗。
- 热与功率管理：连续或多次高能脉冲后器件温升显著，建议在 PCB 板上配合散热铜箔与合适的间隔保护电路元件。
- 并联/串联注意：一般不推荐随意并联多只以提升能量吸收，除非进行匹配测试与热设计；串联可能会影响启动与钳位特性。
- 焊接与工艺：遵循厂家推荐的回流焊工艺参数，避免长时间高温导致器件性能退化。
六、选型与采购提示
SMAJ43A 由 BORN（伯恩半导体）提供，订购时请核对完整型号、封装与规格书。设计环节建议保留适度的安全裕度（钳位电压、功率、峰值电流），并在最终样机测试中验证真实浪涌条件下的保护效果。
如需进一步的电气特性曲线、脉冲测试条件或封装尺寸图，请参考 BORN 官方数据手册或联系厂方技术支持。
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