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BORN 1SMA4751A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN 1SMA4751A
- Type
- BORN
- Minimum package
- 5000 未知
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- 1SMA4751A
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Zener Diode
- Electronic Component
- 0.11g
- Electronic Component
- 1
- (Zzk)
- 1kΩ
- (Zzt)
- 40Ω
- Electronic Component
- BM0231019394
- Diode
- 1
- Current(Ir)
- 5uA
- Power Dissipation(Pd)
- 1W
- Electronic Component
- 55℃~+150℃
- 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.
1SMA4751A 产品概述
一、产品简介
1SMA4751A 是 BORN（伯恩半导体）出品的一款表面贴装稳压/浪涌保护器件，封装为 SMA (DO-214AC)。该器件名义稳压值为 30V，适用于对中低功率电源和信号线路的过压保护与稳压吸收。结构紧凑、可靠性高，适合集成到消费电子、工业控制与通讯设备的防护电路中。
二、主要电气参数
- 标称稳压值（Vnom）：30V
- 反向漏电流（Ir）：5 μA（典型或最大值，取决于偏压）
- 静态阻抗（Zzk）：1 kΩ
- 动态阻抗（Zzt）：40 Ω
- 最大耗散功率（Pd）：1 W（在规定环境与散热条件下）
- 工作结温范围：-55 ℃ ~ +150 ℃
三、功能与特点
- 有效的瞬态过压吸收能力，可抑制雷击、浪涌及开关尖峰带来的过压。
- 低漏电流，有利于对低功耗电路的保护而不引入显著静态损耗。
- 宽工作温度范围，适应严苛环境下长期可靠工作。
- SMA 封装便于自动贴装和批量生产，适合 PCB 空间受限的应用。
四、典型应用
- 电源总线及局部稳压保护（如 24V/30V 等电源系统）
- 工业控制器、PLC 接口保护
- 通信设备与路由器电源防护
- 汽车电子辅助电路（在满足汽车认证前提下）
- 测试与测量仪器的输入/输出端防浪涌
五、设计与使用建议
- 根据耗散功率与 PCB 散热条件进行合理退让与额定功率校核；1W 为在标准条件下的耗散上限，长时间工作建议预留裕量并加强散热铜箔。
- 放置位置靠近被保护端口，尽量缩短引线与走线长度以降低抑制效率损失。
- 单向使用时按二极管极性连接，双向吸收需选用对称型号或并联反接。
- 注意焊接温度曲线，避免超时高温造成器件性能劣化。
六、封装与订购信息
- 封装：SMA (DO-214AC)，适合回流焊工艺与自动贴片生产。
- 品牌：BORN（伯恩半导体），型号：1SMA4751A。
- 在选型时建议参阅厂家的完整数据手册，确认脉冲耐受能力、浪涌曲线及封装尺寸以满足具体设计需求。
如需更详细的浪涌电流曲线、击穿特性图表或等效电路模型，可提供，我将协助查找并给出针对 PCB 布局与热管理的具体建议。
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