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MSKSEMI ZM4740A
Configuration
1 options
Configuration
24+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MSKSEMI ZM4740A
- Type
- MSKSEMI
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MSKSEMI
- Electronic Component
- ZM4740A
- Electronic Component
- 1
- Package
- LL-41
- Electronic Component
- Zener Diode
- Electronic Component
- ±5%
- Electronic Component
- 0.16g
- Electronic Component
- 1
- (Zzk)
- 700Ω
- (Zzt)
- 7Ω
- Electronic Component
- BM0226270609
- Diode
- 1
- Current(Ir)
- [email protected]
- Power Dissipation(Pd)
- 1W
- 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.
ZM4740A 产品概述
一、产品简介
ZM4740A 是一款由 MSKSEMI（美森科）提供的独立式稳压二极管，标称稳压值为 10V，精度 ±5%。器件采用 LL-41 轴向封装，适合通孔安装与点对点布线，单只耗散功率为 1W，适用于小功率稳压与基准场合。
二、关键电气参数解读
- 稳压值（标称）：10V（±5%）——作为参考电压或并联稳压时的目标电压。
- 耗散功率 Pd：1W——器件在良好散热条件下允许的最大耗散，设计时应留有余量并注意热管理。
- 反向电流 Ir：10μA @ 7.6V——在偏低反向电压下的漏电流指标，对高阻抗输入或高精度测量回路影响较大。
- 阻抗 Zzk：700Ω，Zzt：7Ω——表明在不同工作点下的动态阻抗差异较大：低电流区阻抗较高，靠近额定工作电流或测试点时阻抗显著降低（约为几欧姆量级），这决定了器件在不同电流下的稳压能力和电压随电流变化的敏感性。
三、封装与机械特性
LL-41 为常见的轴向玻璃封装，体积小、耐环境能力好，便于手工焊接及通孔装配。适合在空间受限且要求可靠性的中低功率电路中使用。
四、典型应用场景
- 小功率并联稳压（简单稳压源）
- 基准电压源与电平检测
- 过压钳位与浪涌保护（低能量抑制）
- 模拟电路偏置、放大器参考点
五、使用建议与注意事项
- 作为并联稳压元件时，须配置合适的串联限流电阻以控制通过二极管的电流，避免超过 1W 的耗散极限。
- 在设计时优先考虑在使器件达到低阻抗（接近 Zzt）的电流范围工作，以获得更好的稳压性能；若工作在极低电流，需注意高阻抗（Zzk）带来的电压漂移。
- 注意环境温度对耗散能力的影响，应进行热降额并保证足够散热路径。
- 对于对漏电流敏感的高阻电路，需评估 10μA 的反向电流对系统的影响，必要时选择漏电更小的型号。
六、选型提示
若系统要求更高的稳压精度、更低的动态阻抗或更大功率耗散，建议选用公差更紧、功率更高或专用精密基准源；反之若只需简单钳位与保护，ZM4740A 提供了体积小、成本低的可行方案。
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