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CJ BZT52C22S
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ BZT52C22S
- Type
- CJ
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- BZT52C22S
- Electronic Component
- 1
- Package
- SOD-323
- Electronic Component
- Zener Diode
- Electronic Component
- 0.029g
- Electronic Component
- 1
- (Zzk)
- 250Ω
- (Zzt)
- 55Ω
- Electronic Component
- BM0228052317
- Diode
- 1
- Current(Ir)
- 100nA
- Power Dissipation(Pd)
- 200mW
- Electronic Component
- 20.8V~23.3V
- Electronic Component
- Electronic Component
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BZT52C22S 产品概述
一、产品简介
BZT52C22S 是江苏长电/长晶（CJ）推出的一款独立式稳压（二极管）器件，封装为 SOD-323 小封装，标称稳压值 22V。该器件属于低功耗、低电流的并联稳压二极管，适用于对电压抑制和参考要求不高但空间受限和成本敏感的应用场景。
二、主要规格与特性
- 稳压值（标称）：22V；稳压值范围：20.8V ~ 23.3V。
- 反向漏电流 Ir：≤100 nA（规定条件下，资料注明 100 [email protected]）。
- 耗散功率 Pd：200 mW（注意封装热限制，需限流运行）。
- 动态阻抗：Zzt ≈ 55 Ω（测试电流下）；Zzk ≈ 250 Ω（在击穿转折区或低测试电流下）。
- 器件类型：独立式（分立稳压二极管），封装：SOD-323。
这些参数表明器件适合做小电流稳压、过压保护与参考电压源，但不适用于大电流稳压场合。
三、典型应用场景
- 小电流并联稳压或参考电压源（低速采集、传感器供电参考）。
- 输入过压/浪涌钳位（需限流电阻配合）。
- 电路中用于限制峰值电压，保护下游敏感器件。
- 低功耗便携设备、消费电子小功率保护点位。
四、使用与选型要点
- 功率与电流限制：Pd=200 mW，按 Vz≈22V 计算最大稳压电流 Imax≈9.1 mA。考虑 SOD-323 热阻及安全裕度，设计时一般将工作电流控制在数毫安以内（例如 ≤4–5 mA）。
- 限流电阻计算示例：若 Vin_max=30V，期望 Iz=5 mA，则 R=(30−22)/5 mA ≈1.6 kΩ；并核算电阻耗散 PR=I^2·R。
- 温度与容差：稳压值有一定范围（20.8–23.3V），对精度敏感的场合需选用更高精度方案或加温度补偿。
- 动态阻抗影响负载调节性能，低频或小信号下注意滤波与旁路电容布置。
五、封装与可靠性建议
- SOD-323 封装体积小、热阻较大，焊接时遵循厂商回流曲线并注意 PCB 散热区域设计。
- 储存与贴片工艺按厂家湿度等级（MSL）和回流温度执行，避免多次回流、静电放电（ESD）防护。
- 长期可靠性与漏电随温度上升有关，高温环境下漏电与稳压偏移应在设计裕度内考虑。
六、典型电路与实用提示
- 在并联稳压应用中，务必串联限流电阻以限制通过稳压二极管的电流；对于频繁浪涌的场合建议并联瞬态抑制器或增加吸收网络。
- 若需要更稳定的参考电压，可采用小电流下配合运放构成带路环的稳压方案，或改用带更低 Zzt 与更高功耗的型号。
- 调试时测量实际稳压值与漏电在目标工作电压和温度下的变化，以确保系统稳定运行。
总结：BZT52C22S 以其 22V 标称电压、小体积与极低漏电适合低功耗、小空间的稳压和保护用途，但受限于 200 mW 的低耗散能力和较高的动态阻抗，选型与电路设计时需充分考虑限流、散热与精度要求。
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