WMSIC Electronic Components

Slkor ZM4741A

ModelZM4741A
PackageLL-41
BrandSLKOR
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 23+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Slkor ZM4741A
Type
SLKOR
Minimum package
5000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
SLKOR
Electronic Component
ZM4741A
Electronic Component
1
Package
LL-41
Electronic Component
Zener Diode
Electronic Component
0.17g
Electronic Component
1
(Zzk)
700Ω
(Zzt)
8Ω
Electronic Component
BM0264989542
Diode
1
Power Dissipation(Pd)
1W
Electronic Component
10.45V~11.55V
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.

ZM4741A 产品概述

ZM4741A 是 Slkor(萨科微)推出的一款单体独立式稳压二极管,额定稳压值为 11V(命名为 ZM4741)。该型号采用小型轴向玻璃封装 LL-41,适用于对空间、成本有要求的通用稳压与限幅电路。ZM4741A 为后缀“A”版本,提供 ±5% 的齐纳电压容差,适合对稳压精度有中等要求的应用场合。

一、主要参数与性能要点

  • 稳压(标称): 11V(ZM4741)
  • 稳压值范围(ZM4741A): 10.45V ~ 11.55V(±5%)
  • 反向电流 Ir: ≤ 5 µA @ 8.4V
  • 耗散功率 Pd: 1 W(器件最大耗散,受散热条件影响)
  • 动态阻抗 Zzt: 8 Ω(稳态测试区,表示良好的电压稳定性)
  • 膝部阻抗 Zzk: 700 Ω(低电流或膝部区域时的阻抗特性)
  • 封装: LL-41(轴向玻璃/树脂封装)
  • 单位: 单个独立二极管

二、主要特性与优势

  • 高功率额定:在适当散热条件下 Pd=1W,可支持较高工作电流与功率应用,便于取代小型分流稳压器或作为限幅器使用。
  • 中等精度容差:A 后缀(ZM4741A)对应 ±5% 齐纳电压容差,较标准 ±10% 有明显提升,满足多数模拟与数字电源回路要求。
  • 低动态阻抗:Zzt=8Ω 意味着在设计工作点附近二极管具有较小的伏安波动,稳压效果更好。
  • 紧凑封装:LL-41 轴向封装便于传统插件安装、焊接和自动化装配。

三、典型应用场景

  • 简易线性稳压源:与串联限流电阻组合,为低功耗模块或传感器提供本地稳压。
  • 电压基准与比较电路:为比较器、放大器提供较稳定的参考电压。
  • 过压/限压保护:保护敏感电路免受短时电压尖峰或过压影响。
  • 信号钳位:在模拟信号路径中用作电压夹位元件,防止超限输入。
  • 消费电子、仪器仪表以及工业控制等场合的通用稳压与限幅需求。

四、选型与电流计算建议

  • 最大稳态电流计算(理想条件):Iz,max = Pd / Vz = 1W / 11V ≈ 91 mA。该值为在理想散热条件下的热功率极限,不应作为长期工作电流。
  • 推荐工作方式:通常将工作电流设定在器件最大 Iz 的 20%~60% 区间以延长寿命并保证稳定性,具体取决于散热和环境温度。
  • 反向漏电注意:在低电压或低电流应用中,Ir ≤ 5 µA(@8.4V)可能对电路静态偏置产生影响,应在设计时考虑漏电流对精度的影响。

示例:若输入电压 Vin,需得到 11V 输出且允许最大稳态电流 Iz,串联电阻 R 可按 R = (Vin - 11V) / Iz 计算,并保证 R 上的功耗及二极管 Pd 不超限。

五、热设计与封装注意事项

  • 封装 LL-41 为轴向结构,通过引线向PCB传导热量,良好的焊盘和铜箔面积有助于散热。
  • 在高耗散应用场合,应尽量缩短焊接引线并增大 PCB 铜箔面积,必要时采取散热片或通孔增加散热路径。
  • 环境温度升高会降低器件的最大允许耗散,应在设计时预留安全裕量并参考厂方具体热阻-温度曲线(如需精确设计,请参照完整数据手册)。

六、封装与标识

  • 封装类型:LL-41(轴向小型封装,适合通孔安装)
  • 标识:产品标识通常包含型号(ZM4741A)和制造商 Slkor(萨科微)相关标记;出厂前可根据客户需求提供定制标签或包装。

七、订购、容差与定制信息

  • 标准容差:±10%(不带后缀)
  • 可选容差:A 后缀为 ±5%(ZM4741A);B 后缀为 ±2%
  • 其它容差及特殊测试项(如低温性能、筛选等级)可按批量或项目需求定制,建议在下单前与 Slkor 供应代表沟通具体需求与交期。

如需进行电路仿真或样片测试,建议在设计初期获取 Slkor 的完整数据手册与热阻参数,以便准确评估稳压精度与热裕度。若需帮助计算限流电阻、散热设计或在具体电路中的选型建议,可提供输入电压、期望工作电流与环境温度等参数以便进一步分析。

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