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Jingdao Microelectronics 1SMA4762A
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Electronic 1SMA4762A
- Type
- Jingdao Microelectronics
- Minimum package
- 5000
Technical parameters
- Electronic Component
- Electronic
- Electronic Component
- 1SMA4762A
- Electronic Component
- 1
- Package
- SMA
- Electronic Component
- Zener Diode
- Electronic Component
- 0.062g
- Electronic Component
- 20
- (Zzt)
- 200Ω
- Electronic Component
- BM0231086999
- Diode
- 1
- Current(Ir)
- 1uA@62V
- Power Dissipation(Pd)
- 1W
- Electronic Component
- 77.9V~87V
- Electronic Component
- 55℃~+150℃
- Electronic Component
- 5000
- Electronic Component
- 82V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
1SMA4762A 产品概述
一、产品简介
1SMA4762A 是晶导微电子推出的一款独立式稳压二极管（Zener/稳压二极管），采用SMA封装，标称稳压值为82V。器件设计用于直流电压稳压、参考电压源以及对设备的过压/浪涌钳位保护，适合功率和尺寸均受限的应用场景。
二、主要特性
- 标称稳压值（Vz）：82V，稳压区范围77.9V~87V，适配较宽的电压公差要求。
- 低反向漏电流（Ir）：1µA @ 62V，利于减小待稳压电路的静态损耗。
- 稳态耗散功率（Pd）：1W（在特定散热条件下），满足中等功率稳压需求。
- 稳压阻抗（Zzt）：约200Ω，体现器件在稳压区的动态响应特性。
- 工作结温范围：-55℃至+150℃，能在较宽温度范围内保持性能稳定。
- 封装：SMA，适配通用贴片焊接工艺，便于自动化生产与可靠连接。
三、电气参数要点
1SMA4762A 在测试条件下具有标注的Vz与Ir，实际工作时稳压性能受工作电流、结温及电路寄生影响。Zzt＝200Ω 表明在稳压区内存在一定动态阻抗，设计中应考虑稳压精度与负载变化对输出电压的影响。连续耗散功率1W 为在良好PCB散热条件下的限定值，超过该值需采取降额或加装散热手段。
四、典型应用
- 工业电源的过压保护与稳压参考；
- 通信设备与测试仪器的局部稳压电源；
- 浪涌吸收与抑制（配合限流元件使用）；
- 各类电子模块的电压基准与保护电路。
五、封装与热管理
SMA 小型贴片封装便于高密度装板，但热阻相对较大。长期可靠工作需注意PCB铜箔散热、加大焊盘面积或并联多个器件分担功耗。焊接时建议遵循元件制造商或行业标准的回流曲线，避免过热造成性能退化。
六、选型与使用注意事项
- 若工作电流或瞬态能量较大，应考虑选择耗散能力或脉冲能力更高的型号；
- 实际稳压值会随温度与电流变化，设计时留有裕度；
- 高频或瞬态抑制场合需配合适当的串联限流器件或RC滤波器，避免振荡或超额能量输入；
- 采购时请确认批次与规格数据表一致，散装或卷带等包装形式可根据生产需求与供应商协商。
如需更详细的电气特性曲线、冲击能量等级或封装尺寸图纸，请提供具体应用条件或向晶导微电子索取完整规格书。
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