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JSMSEMI ZMM12
Configuration
1 options
Configuration
25+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- JSMSEMI ZMM12
- Type
- JSMSEMI
- Minimum package
- 2500
Technical parameters
- Electronic Component
- JSMSEMI
- Electronic Component
- ZMM12
- Electronic Component
- 1
- Package
- LL-34
- Electronic Component
- Zener Diode
- Electronic Component
- 0.052g
- Electronic Component
- 1
- (Zzk)
- 90Ω
- (Zzt)
- 20Ω
- Electronic Component
- BM0257647742
- Diode
- 1
- Current(Ir)
- 100nA
- Power Dissipation(Pd)
- 500mW
- Electronic Component
- 11.4V~12.7V
- Electronic Component
- 2500
- Electronic Component
- 12V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
ZMM12 稳压二极管产品概述
一、产品简介
ZMM12 是 JSMSEMI（杰盛微）出品的一款小功耗稳压二极管，标称稳压值 12V，稳压范围 11.4V～12.7V，设计用于低功耗电压稳压与参考场合。封装为 LL-34（玻封轴向），适合波峰焊/手工焊接后装配与通孔电路板使用，器件体积小、成本低、易于替换。
二、电气主要参数
- 稳压值（标称）：12V
- 稳压范围：11.4V ～ 12.7V
- 最大耗散功率 Pd：500mW（器件封装及环境温度限制必须满足）
- 反向漏电流 Ir：100nA（在 9.1V 条件下测得，低漏电流适用于高阻抗电路）
- 小信号阻抗 Zzt：20Ω（在额定测试条件下的动态阻抗，表示良好的小幅度稳压性能）
- 軸向阻抗 Zzk：90Ω（通常在较低偏流或转折区测得，指示在某些工作点阻抗增大）
三、典型应用场景
- 小功率电路的基准电压源或次级稳压，适用于微控制器、传感器供电的局部稳压
- 电路保护与钳位，如防止输入浪涌超过敏感元件
- 信号整形、波形夹位与偏置网络
- 高阻输入测量电路中作为参考源（受益于低反向漏电流）
四、使用与选型要点
- 功率限值计算：最大稳压电流（无负载） Iz_max ≈ Pd_max / Vz = 0.5W / 12V ≈ 41.7mA。实际设计应留有余量并考虑环境温度的功率降额。
- 串联限流电阻计算：R = (Vs - Vz) / I_total，其中 I_total = Iz + Iload；保证 Vz·Iz ≤ Pd_max 并在任何工况下不超过器件功耗上限。
- 由于 Zzk 较高，在低电流区域稳压精度下降，建议在接近器件推荐偏流区工作以获得较低的动态阻抗（Zzt 处表现更佳）。
- 反向漏电流在低压下很小，适合用于高阻抗测量或微电流电路，但在高温下漏电流会增加，应参考完整数据表。
五、封装与可靠性提示
LL-34 轴向玻封结构，良好绝缘与机械强度。焊接时避免过热和过长时间加热，必要时采用预热与快速冷却的焊接工艺；装配时留意散热空间与通风，器件功耗受环境温度影响显著，建议在较高环境温度下降额使用。
六、选用建议与注意事项
- 若需更高精度，可选择功率更大或具有温度补偿的参考源；若工作电流接近或超过 10mA，应关注动态阻抗与温漂特性。
- 在高浪涌或需要抑制瞬态的场合，考虑与吸收型元件（如 TVS）配合使用以保护稳压二极管。
- 采购时确认供应商批次与完整数据手册，关注温度系数、测试电流条件和长期可靠性数据。
ZMM12 以其紧凑封装、低漏电、适度的动态阻抗和 500mW 功率特性，适合在各类低功耗、成本敏感的稳压与参考场合使用。选型时请结合实际工作电流、环境温度和电路拓扑进行详细核算。
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