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BORN 1SMA4741A
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- BORN 1SMA4741A
- Type
- BORN
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- BORN
- Electronic Component
- 1SMA4741A
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Zener Diode
- Electronic Component
- 0.11g
- Electronic Component
- 1
- (Zzk)
- 700Ω
- (Zzt)
- 8Ω
- Electronic Component
- BM0264577792
- 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.
1SMA4741A 产品概述
一、产品简介
1SMA4741A 是伯恩半导体（BORN）推出的一款表面贴装稳压二极管，采用 SMA（DO-214AC）封装，额定稳压值为 11V，单个独立封装设计，适合对空间和成本有要求的中低功率电压保护与基准场景。器件定位为 1W 级别的贴片稳压管，适配常见的工业与消费电子设备。
二、主要特性
- 稳压值（标称）：11V
- 最大反向漏电流 Ir：5 μA（典型工况下）
- 最大耗散功率 Pd：1 W（在规定散热条件下）
- 动态阻抗 Zzt：8 Ω；静态/弯折阻抗 Zzk：700 Ω
- 结温工作范围：-55 ℃ 至 +150 ℃
- 封装：SMA（DO-214AC），便于自动贴装与回流焊接
三、电气参数要点
该器件在稳压区表现为低至几欧姆级的动态阻抗（Zzt=8 Ω），能在一定电流范围内维持 11V 稳压输出。反向漏电流较小（Ir=5 μA），适合对静态功耗敏感的应用。额定耗散功率为 1W，实际应用中需根据工作环境与PCB散热条件对功率进行降额处理以保证可靠性。
四、典型应用
- 11V 参考电压源与精密基准辅助电路
- 电源轨过压保护与钳位（瞬态/持续工况）
- 模拟电路偏置与信号调理
- 工业控制、通信设备与消费类产品中需要小功率稳压和浪涌吸收的场合
五、封装与焊接建议
SMA（DO-214AC）封装利于自动化生产与回流工艺。器件有标识极性（阴极带），在贴装时应严格遵循贴片方向。建议按照厂家推荐的焊盘尺寸和回流曲线进行工艺设定，焊盘铜箔与过孔设计应兼顾稳压管热量的散出。
六、使用注意事项与热管理
- 功率计算：稳压管耗散 Pz ≈ Vz × Iz（Vz 为稳压电压，Iz 为流过稳压管的电流），并应保证 Pz ≤ Pd（并考虑降额系数）。
- 降额管理：在高温或散热受限环境下，应相应降低最大允许电流或改用外部散热/更大功率器件。
- 热循环与过压：避免长时间在极限功率或大幅度温度循环下工作，以延长器件寿命。
七、订购与质量信息
本器件由 BORN（伯恩半导体）品牌提供，封装为 SMA（DO-214AC）。采购时请确认包装形式（卷带、散装等）与批次一致性，并参考厂商提供的详细数据手册做最终设计验证。若需替代型号或更高功率规格，可与供应商沟通以获得合适的器件推荐。
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