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CJ BZT52B18
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ BZT52B18
- Type
- CJ
- Minimum package
- 3000
Technical parameters
- Electronic Component
- CJ
- Electronic Component
- BZT52B18
- Electronic Component
- 1
- Package
- SOD-123
- Electronic Component
- Zener Diode
- Electronic Component
- 0.034g
- Electronic Component
- 1
- (Zzk)
- 225Ω
- (Zzt)
- 45Ω
- Electronic Component
- BM0228679562
- Diode
- 1
- Current(Ir)
- [email protected]
- Power Dissipation(Pd)
- 350mW
- Electronic Component
- 17.64V~18.36V
- Electronic Component
- 55℃~+150℃
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BZT52B18 产品概述
一、产品简介
BZT52B18 为独立式稳压（二极管）器件，品牌为 CJ（江苏长电/长晶），封装为 SOD-123。该器件在反向工作状态下提供约 18V 的稳压特性，适用于低功耗、小体积的基准/稳压场合，可作为简单的电压基准、过压钳位或偏置源使用。
二、主要参数
- 标称稳压值：18V
- 稳压位范围：17.64V ～ 18.36V（典型测试范围）
- 反向电流 Ir：100nA @ 12.6V（漏电流指标）
- 阻抗：Zzk 225Ω（在指定测试条件下的直流/低频阻抗），Zzt 45Ω（在指定测试条件下的交流/动态阻抗）
- 最大耗散功率 Pd：350mW（需注意结温与环境降额）
- 工作结温范围：-55℃ ～ +150℃
- 封装：SOD-123（表面贴装，适合自动化贴装与回流焊工艺）
三、典型应用
- 小型稳压电源与基准电压源（低功耗场合）
- 输入过压或浪涌钳位保护（与限流元件配合）
- 模拟电路偏置、参考电压提供
- 便携设备、传感器模块与便携式测量仪器中的低功耗稳压
四、使用与注意事项
- 功耗与热管理：Pd 为 350mW，为保证器件长期可靠性，应在 PCB 设计中提供足够的散热路径并按数据表对结温进行降额计算。若通电工作于高电压或较高电流条件下，应确认结温不超限。
- 测试与测量：测量稳压值时应在规定测试电流下读取 Vz，同时测量漏电流 Ir 时要在指定电压点（如 12.6V）读取。动态阻抗随测试电流不同而变化，实际电路中应关注工作电流对应的阻抗特性。
- 焊接工艺：SOD-123 支持回流焊，推荐遵循厂商推荐的回流温度曲线，避免过高峰值温度和长时间回流以防损伤器件或影响稳定性。
- 极性及防静电：稳压二极管有明确极性，安装前确认方向；做好防静电措施以保护器件免受静电损伤。
五、封装与可靠性
SOD-123 封装体积小，适合高密度 PCB 布局。长期可靠性与电气特性依赖于工作结温与环境应力，正常环境下遵循资料温度范围及功率降额规则，可获得稳定的电压参考性能。
六、选型与订购建议
选择时除了稳压电压与功耗外，还应关注在目标工作电流范围内的动态阻抗与温度系数，以及漏电流对电路的影响。CJ（江苏长电/长晶）BZT52B18 在小型低功耗应用中具有成本与体积优势，适合批量贴片生产。订购时请注明封装 SOD-123 与相关测试批次/可靠性要求，以便获取对应质量与测试报告。
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