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JSMSEMI MMBTA42
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- JSMSEMI MMBTA42
- Type
- JSMSEMI
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- JSMSEMI
- Electronic Component
- MMBTA42
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 NPN
- Electronic Component
- Transistor(BJT)
- Electronic Component
- 0.057g
- Electronic Component
- 1
- Electronic Component
- BM0230664912
- Operating Temperature
- 55℃~+150℃
- Transistor Type
- NPN
- Frequency(f T)
- 50MHz
- Power Dissipation(Pd)
- 350mW
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MMBTA42 产品概述
一、主要特性
MMBTA42 是由 JSMSEMI（杰盛微）推出的一款高压小功率 NPN 双极型晶体管，采用 SOT-23 封装，适合在空间受限且需要较高耐压的电路中使用。其主要特性包括高集电极-发射极击穿电压、低漏电流以及中等频率特性，适用范围广泛。
二、关键性能参数
- 工作结温度范围（Tj）：-55 ℃ ~ +150 ℃
- 集电极截止电流（Icbo）：100 nA（低漏电，有利于高阻态精度）
- 集电极-发射极击穿电压（Vceo）：200 V（高耐压，适合中高压电路）
- 射基极击穿电压（Vebo）：6 V
- 特征频率（fT）：50 MHz（适合低频到中频放大与开关）
- 最大集电极电流（Ic）：500 mA（短时驱动能力良好）
- 耗散功率（Pd）：350 mW（SOT-23 小封装，需注意热管理）
- 集电极-发射极饱和电压（VCE(sat)）：约 500 mV（在常见驱动条件下表现良好）
三、典型应用场景
- 中高压开关电路与保护电路：Vceo=200V 支持较高电压环境下的开关与级联应用。
- 中低功率驱动：可驱动小型继电器、指示灯和低功率负载（注意 Pd 与散热限制）。
- 放大器与缓冲级：fT=50MHz 适合音频到低射频范围的放大与前置缓冲。
- 工业与汽车电子（在满足温度和散热要求下）：工作结温度覆盖-55℃~150℃。
四、封装与热管理
SOT-23 小体积封装使器件便于贴片自动化装配，但同时限制了耗散功率（Pd=350 mW）。在设计中应注意：
- 保持良好的 PCB 散热路径（加大 GND/散热铜箔、使用热vias）。
- 根据工作电流和占空比估算结温，确保不超过 Tjmax。
- 在高集电极电流或连续开关场景下考虑外部散热或并联器件方案。
五、典型电路与使用建议
- 常用接法：共射开关、共集缓冲或共射放大器。
- 当作为开关使用时，注意基极驱动电流与限流电阻，确保器件进入饱和或截止状态且 VCE(sat) 控制在允许范围内。
- 在高压应用中建议预留安全裕度（如工作电压不超过 Vceo 的 60~80%），并加入过压保护与抑制元件。
六、选型与注意事项
- 若工作电流接近 500 mA 或长期功耗接近 Pd，应优先选择功率更大的封装或外部散热方案。
- 电路在高温环境下运行时，需关注结温上升对漏电流和击穿电压的影响。
- 如需更详尽的特性曲线（如 VCE(sat) 与 Ic 的典型测试条件、热阻 RthJA），请参考厂商完整数据手册。
七、品牌与订购信息
产品型号：MMBTA42
品牌：JSMSEMI（杰盛微）
封装：SOT-23
若需样片、技术规格书或可靠性报告，请联系 JSMSEMI 授权代理或供应商获取最新数据手册及应用参考电路。
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