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ElecSuper BSS138BK
Configuration
1 options
Configuration
26+
Available for RFQ
Technical data
Product details
19
specifications
Core information
- Product name
- Elec Super BSS138BK
- Type
- ELECSUPER
- Minimum package
- 3000 圆盘
Technical parameters
- Electronic Component
- Electronic Component
- Electronic Component
- ELECSUPER
- Electronic Component
- BSS138BK
- Electronic Component
- 1
- Package
- SOT-23
- Electronic Component
- 1 N
- Type
- N
- Electronic Component
- MOSFET
- Electronic Component
- 0.022g
- Electronic Component
- 1
- Electronic Component
- BM0226338676
- Operating Temperature
- 55℃~+150℃
- Power Dissipation(Pd)
- 417mW
- Electronic Component
- Electronic Component
- Electronic Component
- 3000
- Voltage(Vdss)
- 60V
For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.
BSS138BK 产品概述
一、产品简介
BSS138BK 是由 ElecSuper（静芯微）推出的一款小功率 N 沟道增强型 MOSFET，封装为 SOT-23。器件额定漏源电压 Vdss 为 60V，适用于小电流开关和电平转换等场合。工作温度范围宽 (-55℃ 至 +150℃)，能在工业温度区间内可靠工作。
二、关键电气参数
- 类型：N 沟道 MOSFET（单片，数量：1）
- 漏源电压 Vdss：60V
- 连续漏极电流 Id：400mA（最高）
- 最大耗散功率 Pd：417mW
- 导通电阻 RDS(on)：1.5Ω @ Vgs=10V
- 阈值电压 Vgs(th)：1V @ Id=250µA
- 输入电容 Ciss：25pF；输出电容 Coss：9.7pF；反向传输电容 Crss：2.2pF
- 栅极电荷 Qg：650pC @ Vgs=4.5V
三、性能特点与应用场景
BSS138BK 以小封装、低电容和适中导通电阻为特点，适合以下应用：
- 逻辑电平转换（双向或单向）
- 小信号开关、负载断接（如 LED、传感器电源）
- 便携式设备的低侧开关与电源管理
- 快速开关场合（得益于较小的 Coss、Ciss 与 Crss）
注意：虽然 Vgs(th) 仅 1V，表现为“逻辑电平友好”，但给出的 RDS(on) 为在 Vgs=10V 下测得，若使用 3.3V 或 5V 驱动，导通电阻会明显增大，应根据实际导通损耗估算。
四、热管理与使用注意
- 在最大连续电流 400mA 与 RDS(on)=1.5Ω 下，器件损耗约为 0.24W，仍在封装 Pd 约 0.417W 范围内，但 SOT-23 的散热能力受限，需考虑 PCB 铜箔面积与环境温度进行降额使用。
- 建议在高环境温度或长期导通工况下对额定功耗进行降额（例如 70%~80%），并增加散热铜箔。
- 在高频开关时注意栅极驱动能力，Qg=650pC 表示在较快切换时需相对较强的驱动电流，否则开关损耗上升。
五、封装与引脚提示
- 封装：SOT-23，适用于自动贴片组装。
- 常见引脚排列（标准 SOT-23 BSS138 类似）：Pin1 Gate、Pin2 Drain、Pin3 Source（出于不同厂商封装引脚可能有变动，设计前请以实际器件数据手册为准）。
六、选型建议
- 若应用为 3.3V/5V 逻辑侧低压开关或电平移位，BSS138BK 是常见且成本友好的选择；若需要更低的导通电阻（以减少导通损耗或通过更大电流），应选择 RDS(on) 在低 Vgs 下更优的型号。
- 在开关频率较高或驱动资源有限时，综合考虑 Ciss、Qg 与驱动电流，必要时增加驱动能力或选用低 Qg 器件。
如需电气特性曲线、典型应用原理图或 PCB 布局建议，可提供具体使用场景，我将给出针对性的设计建议。
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