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LRC LM5Z3V9T1G
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- LRC LM5Z3V9T1G
- Type
- LRC
- Minimum package
- 5000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- LRC
- Electronic Component
- LM5Z3V9T1G
- Electronic Component
- 1
- Package
- SOD-523
- Electronic Component
- Zener Diode
- Electronic Component
- 0.023g
- Electronic Component
- 1
- (Zzk)
- 1kΩ
- (Zzt)
- 90Ω
- Electronic Component
- BM0264777626
- Diode
- 1
- Current(Ir)
- 3uA@1V
- Power Dissipation(Pd)
- 200mW
- Electronic Component
- 3.7V~4.1V
- Electronic Component
- 65℃~+150℃
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
LM5Z3V9T1G 3.9V 稳压二极管产品概述
一、概述
LM5Z3V9T1G 是 LRC（乐山无线电）出品的一款小功率稳压二极管，标称稳压值 3.9V，最大耗散功率 200mW，封装为 SOD-523 封装。该器件适用于空间受限的消费电子、便携设备和信号线稳压或钳位保护场合。
二、主要参数
- 标称稳压值：3.9V（允许范围 3.7V ~ 4.1V）
- 反向电流 Ir：3μA @ 1V
- 最大耗散功率 Pd：200mW
- 稳压阻抗 Zzt：90Ω；Zzk：1kΩ
- 工作结温范围：-65℃ ~ +150℃
- 封装：SOD-523，单只独立式二极管
三、性能特点
- 小封装、适合密集 PCB 布局，节省空间
- 低反向漏电流，有利于低功耗电路
- 在低至中等电流范围内提供稳定的 3.9V 钳位
- 宽工作温度范围，适用于多种环境
四、典型应用
- 基准稳压与参考电源（低功耗小电流场合）
- 信号线电压钳位和过压保护
- 便携式仪表、传感器前端、微控制器供电监控电路
五、选型与使用注意
- 功率与温升：最大 Pd 为 200mW，但 SOD-523 热阻较大，实用电流应远低于理论峰值。建议在 PCB 上留足散热面积并限制稳压电流。
- 电流选择：根据公式 R = (Vin - Vz) / Iz 选取限流电阻，常工作电流可取几毫安量级；最大工作电流 Iz_max ≈ Pd / Vz ≈ 51mA，为理论值，实际应取更低以保证可靠性。
- 阻抗影响：Zzt（90Ω）表示稳压动态阻抗，在负载或输入变化时会引起稳压轻微波动，注意电源设计留余量。
- 漏电与偏置：Ir 为 3μA（1V 条件），在极低电流应用应关注漏电对系统的影响。
- 焊接与可靠性：SOD-523 封装体积小，焊接热工艺需控制以免损伤器件。存储与使用遵循半导体防潮规范。
六、封装与供货
- 封装形式：SOD-523，表面贴装，适合自动贴装工艺
- 建议在物料清单中注明温度等级和封装要求，以便量产一致性
该型号在对空间与功耗有严格要求的设计中表现良好，但在需要突出低纹波与高精度稳压的场合，应考虑更高功率或更低阻抗的稳压器件。
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