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CJ MMSZ5235B
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- CJ MMSZ5235B
- Type
- CJ
- Minimum package
- 3000 编带
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- CJ
- Electronic Component
- MMSZ5235B
- Electronic Component
- 1
- Package
- SOD-123
- Electronic Component
- Zener Diode
- Electronic Component
- 0.033g
- Electronic Component
- 1
- (Zzk)
- 750Ω
- (Zzt)
- 5Ω
- Electronic Component
- BM0228197308
- Diode
- 1
- Current(Ir)
- 3uA
- Power Dissipation(Pd)
- 350mW
- Electronic Component
- 6.46V~7.14V
- 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.
MMSZ5235B 产品概述
一、产品简介
MMSZ5235B 为 CJ（江苏长电/长晶）生产的独立式稳压二极管，标称稳压值 6.8V，常用于低功耗的稳压基准、浪涌钳位与电压参考场合。器件以 SOD-123 小型封装提供，体积小、易于贴装，适合表面贴装工艺要求。
二、主要参数
- 稳压值（标称）：6.8V
- 稳压值（范围）：6.46V ～ 7.14V
- 反向电流 Ir：3 μA（在 VR = 5V 条件下）
- 耗散功率 Pd：350 mW（器件最大耗散）
- 动态阻抗 Zzt：5 Ω（在规定测试电流下）
- 阻抗 Zzk：750 Ω（在转折/拐点条件下）
- 工作结温范围：-65 ℃ ～ +150 ℃
- 封装：SOD-123
- 封装形式：独立式（单只稳压二极管）
三、特性与优势
- 标称电压稳定、容差窄（6.46–7.14V），适合作为参考电压或保护电路的稳定钳位元件。
- 低动态阻抗（Zzt = 5 Ω），在工作电流变化时输出电压波动小，保持良好的稳压性能。
- 低漏电流（Ir = 3 μA@5V），在微功耗或待机电路中引入的误差和损耗小。
- SOD-123 小型封装，有利于高密度贴装和自动化生产。
四、典型应用场景
- 低功耗稳压参考源、模拟电路基准电压；
- 电源浪涌或电压尖峰的瞬态钳位保护；
- 通信设备、传感器前端、便携设备中的局部稳压和保护；
- 作为移位器电路、限幅电路的简单实现元件。
五、使用建议与热管理
- 最大耗散功率 Pd 为 350 mW，器件在持续工作时应保证结温不超过额定值。简单计算：在稳压状态下的最大允许电流 Imax ≈ Pd / Vz ≈ 0.35 W / 6.8 V ≈ 51.5 mA，但在实际设计中建议留裕量并考虑封装散热能力，通常工作电流远低于此值。
- 作为分流稳压使用时，串联限流电阻 R = (Vin − Vz) / Iz。示例：若 Vin = 12 V、目标稳压电流 Iz = 5 mA，则 R ≈ (12 − 6.8) / 0.005 ≈ 1.04 kΩ；此时二极管耗散 P ≈ Vz × Iz ≈ 34 mW。
- 在高温环境或高输入压差下，应注意器件功耗分散并必要时选用更大功率的稳压器件或增加并联散热措施。
六、封装与采购说明
- 封装：SOD-123，适合回流焊工艺，便于贴片装配。
- 品牌：CJ（江苏长电/长晶），型号 MMSZ5235B。
- 采购时注意核对稳压值范围与测试条件（如测试电流、测定电压）以保证在目标应用工况下达到预期性能。
总结：MMSZ5235B 是一颗适用于中低功耗场合的 6.8V 稳压二极管，具有低漏电、低动态阻抗及小型封装等优点，适合做局部基准源与钳位保护。设计时应重视功耗与散热限制，按应用场景合理选取偏流与串联电阻以保证长期可靠运行。
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