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MDD MDD3401
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- MDD MDD3401
- Type
- MDD
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- MDD
- Electronic Component
- MDD3401
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 P
- Electronic Component
- MOSFET
- Electronic Component
- 0.032g
- Electronic Component
- 1
- Electronic Component
- BM0227798531
- Operating Temperature
- 50℃~+150℃
- Power Dissipation(Pd)
- 1.2W
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage(Vdss)
- 30V
- Capacitor(Ciss)
- 655pF
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
MDD3401 产品概述
一、主要特性
MDD3401 是一颗 P 沟道场效应晶体管（P‑MOSFET），单颗封装于 SOT‑23 外壳，适合做高侧开关与电源反向保护。主要电气参数如下：漏源耐压 Vdss = 30 V，连续漏极电流 Id = 4.2 A，导通电阻 RDS(on) = 45 mΩ（在 Vgs = −10 V、Id ≈ 4.1 A 时测得）；耗散功率 Pd = 1.2 W；栅极阈值 Vgs(th) ≈ 0.5 V。栅极总电荷 Qg = 8.5 nC（@15 V），输入电容 Ciss = 655 pF（@15 V），反向传输电容 Crss = 53 pF，输出电容 Coss = 65 pF。器件工作温度范围为 −50 ℃ 至 +150 ℃。品牌：MDD。
二、性能要点与意义
- 低导通电阻（45 mΩ）使得在中等电流（数安培）条件下导通损耗较小，适合电源开关场景。
- 相对适中的栅极电荷（8.5 nC）意味着在驱动速度与驱动功耗之间取得平衡，适合需要中等开关频率的电源管理电路。
- 母线耐压 30 V 满足常见汽车电子、便携电源与工业控制中低电压侧的保护与切换要求。
- SOT‑23 小封装有利于节省 PCB 面积，但散热能力有限，需注意版面热设计。
三、典型应用场景
- 电池管理与电源路径选择（高侧负载开关、反向保护）
- 便携设备电源切换与充电路径控制
- 低功耗放电回路、负载断开与保护电路
- 小功率 DC‑DC 转换器中的同步开关（低频）与辅助开关
四、封装与 PCB 布局建议
- SOT‑23 封装散热受限，1.2 W 的耗散功率依赖于 PCB 铜箔与散热面积。建议在器件下方与引脚相连处使用拓宽的铜箔和过孔，增加热传导至多层板内层或底层地铜。
- 栅极驱动走线应尽量短且靠近驱动源，串联小阻抗（如 10 Ω）可抑制振铃并保护驱动器。
- 输入端（源）和输出端（漏）应配合适当旁路与去耦电容，以降低开关瞬变电压并稳定系统。
五、选型与使用注意事项
- 注意器件的额定 Vgs 和最大允许栅源电压（请以原厂数据手册为准），驱动电压应在安全范围内。
- 在高温或长期导通条件下需对 RDS(on) 随温度上升导致的损耗增长进行余量设计，避免过热。
- 对开关频率敏感的应用需评估 Qg、Ciss 对驱动功耗与开关损耗的影响。
- ESD 防护与正确封装焊接工艺可提高成品良率和可靠性。
六、总结
MDD3401 在 SOT‑23 小封装中提供了 30 V 耐压、约 4 A 等级和较低的导通电阻，适合体积受限且需高侧开关或电源保护的中低功率应用。合理的 PCB 热设计与合规的驱动电压策略，可以充分发挥其低损耗和易集成的优势。欲获取更详尽的极限参数与曲线（如 RDS(on) 随温度变化、Vgs 最大值等），请参阅 MDD 官方数据手册。
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