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BZT52C7V5为独立式稳压二极管,核心参数覆盖稳压性能、功耗、环境适应性等关键维度,具体规格如下:
参数项 规格值 稳压值(标称值) 7.5V 稳压值(工作范围) 7.0V ~ 7.9V 反向漏电流(Ir) 1μA @ 5V 反向偏置 最大耗散功率(Pd) 500mW 动态阻抗(Zzt) 15Ω(典型测试条件) 动态阻抗(Zzk) 80Ω(拐点电流下) 工作结温范围 -55℃ ~ +150℃ 封装类型 SOD-123(表面贴装) 品牌 扬杰(YANGJIE)BZT52C7V5采用SOD-123表面贴装封装,属于小型化贴片封装(典型尺寸1.6mm×0.8mm×0.6mm),具备以下优势:
该器件由国内知名半导体厂商扬杰(YANGJIE) 生产,扬杰在分立器件领域拥有成熟的研发制造体系,产品通过ISO9001质量认证,广泛应用于消费电子、工业控制、汽车电子等领域。其稳压二极管系列以稳定性高、一致性好、性价比突出为特点,可满足不同客户的量产需求。
标称稳压值7.5V,工作范围覆盖7.0V~7.9V,既保证基础稳压功能,又适配电源输出轻微波动的场景,降低对外部补偿电路的依赖。对于中等精度稳压需求(如±5%),该范围可直接满足应用。
反向漏电流仅1μA(@5V反向偏置),说明器件在反向未击穿状态下漏电流极小,可显著降低待机功耗,适合电池供电的低功耗设备(如智能穿戴、物联网终端),避免漏电流导致的电池续航缩短。
动态阻抗是衡量稳压性能的核心指标:
工作结温范围-55℃~+150℃,符合工业级器件要求,可在极端环境(如北方低温户外、高温工业车间)下稳定工作,拓展至工业控制、车载电子等场景。
当电路出现瞬时过压(如静电放电、电源浪涌)时,BZT52C7V5反向击穿导通,将电压钳位在7.5V左右,保护后级敏感器件(如MCU、传感器)。
实际功耗需满足:( P = V_z \times I_z \leq 500mW )(( V_z )为稳压值,( I_z )为工作电流)。需串联限流电阻,公式为:
[ R = \frac{V_{in} - V_z}{I_z} ]
(( V_{in} )为输入电压,( I_z )建议取测试电流的1.2~2倍)。
稳压值随温度变化(典型正温度系数+2mV/℃),若需高精度稳压(±0.1%),可并联NTC电阻或采用温度补偿电路。
需根据负载电流选择合适的限流电阻,避免电流过大击穿器件;同时需确保负载电流稳定在器件工作电流范围内。
BZT52C7V5凭借紧凑封装、低功耗、宽温适应性等特点,可广泛应用于各类低压稳压与过压保护场景,是中小功率电子设备的高性价比选择。
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