Model & package intelligence
Model text, package form, tray or reel details, and visual evidence are reviewed together before RFQ feedback.
Nexperia BZX384-C75,115 BZX384
Configuration
1 options
Configuration
Date code within 2 years
Available for RFQ
Technical data
Product details
20
specifications
Core information
- Product name
- Nexperia BZX384-C75, 115
- Type
- NEXPERIA
- Unit
- Electronic Component
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- Electronic Component
- NEXPERIA
- Electronic Component
- BZX384-C75,115
- Electronic Component
- 1
- Package
- SOD-323(SC-76)
- Electronic Component
- Zener Diode
- Electronic Component
- ±5%
- Electronic Component
- 0.032g
- Electronic Component
- 1
- (Zzt)
- 255Ω
- Electronic Component
- BM0227290364
- Diode
- 1
- Current(Ir)
- [email protected]
- Power Dissipation(Pd)
- 300mW
- Electronic Component
- 70V~79V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BZX384-C75,115 产品概述
一、概述
BZX384-C75,115 是 Nexperia（安世）出品的一款高压稳压二极管，标称稳压值 75V，额定耗散功率 300mW，封装为 SOD-323（也称 SC-76）。该器件针对低电流、高电压的基准与稳压应用设计，具有较低的反向漏电和稳定的动态阻抗，适合空间受限的贴片电路板。
二、主要电气参数
- 标称稳压值（Vz）：75V（允差 ±5%，实际稳压区间约 70V–79V）
- 反向电流（Ir）：50nA @ 52.5V（低电压下漏电小，有利于高阻电路）
- 阻抗（Zzt）：255Ω（表征小信号下的动态电阻，影响负载电流变化时的电压变动）
- 耗散功率（Pd）：300mW（器件在允许散热条件下的最大耗散功率）
三、使用注意与计算
- 最大稳压电流近似：Iz(max) ≈ Pd / Vz = 300mW / 75V ≈ 4mA。因此该器件适合于毫安级以下的稳压或基准电路，长期工作时应在此值之下并留有裕量。
- 动态电压变化：在小信号变化下，ΔV ≈ Zzt × ΔI。由于 Zzt = 255Ω，电流变化会对稳压值产生可观影响，设计时应保证电流稳定或采用更低阻抗的方案。
- 限流与选择：常见做法是在输入端串联限流电阻 R = (Vin - 75V) / Iz 以限制通过稳压二极管的电流，保证不超过 Iz(max)。
- 热管理：SOD-323 为小型塑封，散热能力有限，需注意PCB热阻和环境温度对 Pd 的影响，必要时采取降载或增加散热面积。
四、典型应用
- 小电流电源的参考电压源与基准（如偏置网络、检测电路）
- 高压测量与保护电路中作为电压钳位/基准元件（低功耗场景）
- 仪器仪表中用于提供稳定高压偏置的元件（需配合限流）
由于器件功率较低，不适合用作大电流浪涌吸收或替代瞬态抑制器。
五、封装与装配建议
SOD-323（SC-76）为常见的小型贴片封装，适合自动贴装与回流焊工艺。装配时注意：
- 遵循供应商给出的回流焊温度曲线；避免超温导致性能退化。
- 在 PCB 设计时为器件引脚留足焊盤面积与热铜量，以改善散热。
- 储存与湿敏等级按照器件标准要求处理，湿度敏感元件需按回潮防护流程焊接。
六、选型建议
选择 BZX384-C75,115 时应确认实际工作电流远低于 4mA，并评估电路对稳压精度（±5%）与动态阻抗（255Ω）的容忍度。若需要更高稳定性或更大电流能力，应考虑功耗更高或具有更低动态阻抗的替代方案。购买时注意核对制造商型号与封装，以免混淆类似型号。
如需该型号的完整数据手册（包含测试条件、曲线和温度特性），建议下载 Nexperia 官方 Datasheet 以便精确设计与仿真。
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