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PANJIT 1SMA4750_R1_00001
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- PANJIT 1SMA4750_R1_00001
- Type
- PANJIT
- Minimum package
- 1800 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- PANJIT
- Electronic Component
- 1SMA4750_R1_00001
- Electronic Component
- 1
- Package
- SMA(DO-214AC)
- Electronic Component
- Zener Diode
- Electronic Component
- 0.09g
- Electronic Component
- 1
- (Zzk)
- 750Ω
- (Zzt)
- 35Ω
- Electronic Component
- BM0265569408
- Diode
- 1
- Current(Ir)
- [email protected]
- Power Dissipation(Pd)
- 1W
- Electronic Component
- 25.65V~28.35V
- Electronic Component
- 50℃~+150℃
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
1SMA4750_R1_00001稳压二极管产品概述
一、产品基本信息
1SMA4750_R1_00001是PANJIT（强茂） 推出的独立式稳压二极管，采用SMA（DO-214AC） 表面贴装封装，专为小功率电子电路的电压稳定、过压保护等场景设计。该型号以27V为标称稳压值，覆盖宽电压范围满足精度需求，同时具备低反向漏电流、高可靠性等特点，适配多种小型化电子设备。
二、核心电性能参数
该型号的关键电性能直接决定应用场景，具体如下：
- 稳压特性：标称稳压值27V，稳压范围覆盖25.65V~28.35V，可兼容多数中等电压电路的稳压需求；
- 反向漏电流：20.6V反向偏置下仅100nA，低漏电流适合低功耗设计，减少电路待机损耗；
- 耗散功率：最大耗散功率1W，适配小功率电子电路（如小型电源、信号处理模块）；
- 动态阻抗：稳压区动态阻抗Zzt=35Ω（稳压效果稳定），反向击穿前阻抗Zzk=750Ω（过压时快速响应）；
- 工作温度范围：工作结温覆盖**-50℃~+150℃**，宽温范围适配户外、工业等极端环境。
三、封装与可靠性设计
采用SMA（DO-214AC） 表面贴装封装，具备以下优势：
- 小型化：封装体积紧凑（典型尺寸约2.29×1.60×1.14mm），适合高密度PCB设计，适配便携式设备、小型模块；
- 焊接兼容性：支持回流焊、波峰焊等标准工艺，焊接可靠性高；
- 宽温可靠性：工作结温范围宽，反向漏电流随温度变化稳定，长期工作不易失效；
- 机械强度：封装结构坚固，抗振动、冲击能力符合工业级标准，适配车载、工业控制场景。
四、典型应用场景
1SMA4750_R1_00001因参数适配性强，广泛应用于：
- 电源电压基准：为单片机、ADC等数字电路提供稳定27V参考电压，保证信号采集精度；
- 过压保护：并联电路输入端，电压超稳压范围时快速击穿，钳位保护后级器件（如LED驱动、电源模块）；
- 信号钳位：模拟信号电路中钳位峰值，防止信号过冲损坏敏感元件；
- 小型电源稳压：配合限流电阻用于小功率开关电源、线性电源输出稳压，适配1W以内功率需求；
- 工业/车载电路：宽温范围适配户外监控、车载电子等极端环境电压稳定需求。
五、选型与使用注意事项
为保证性能与可靠性，使用时需注意：
- 限流电阻匹配：稳压管需工作在反向击穿区，需根据电压差计算限流电阻（如30V电源时，限流电阻≥30Ω），避免功耗超1W；
- 温度影响：稳压值随温度略有变化（典型温度系数+0.05%/℃），极端温度下需考虑补偿；
- 焊接规范：焊接温度≤260℃（回流焊），时间≤10秒，避免损坏封装与芯片；
- 反向偏置限制：避免反向电压超最大击穿电压（参考 datasheet 约30V），防止器件损坏。
该型号凭借高性价比、宽温可靠性及小型化封装，成为小功率稳压/保护电路的优选器件，广泛覆盖消费电子、工业控制、车载等领域。
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