行业组件数据 · 2026

功率MOSFET

Power MOSFETs are voltage-controlled semiconductor switches used for efficient power management in industrial applications.

技术定义与适配语境
典型 功率MOSFET 会按材料、尺寸公差、适配关系和失效风险在 电气设备制造 中评估。

Power Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) are electronic components designed to handle high current and voltage levels in power conversion and switching circuits. They operate as voltage-controlled switches with low on-resistance, enabling efficient energy transfer with minimal heat generation. In charging controllers, they regulate current flow to batteries by rapidly switching on/off based on control signals.

组件规格

定义
Power Metal-Oxide-Semiconductor Field-Effect Transistors (MOSFETs) are electronic components designed to handle high current and voltage levels in power conversion and switching circuits. They operate as voltage-controlled switches with low on-resistance, enabling efficient energy transfer with minimal heat generation. In charging controllers, they regulate current flow to batteries by rapidly switching on/off based on control signals.
工作原理
Power MOSFETs operate by applying a voltage to the gate terminal, which creates an electric field that controls the conductivity between the source and drain terminals. When the gate-source voltage exceeds a threshold, an inversion layer forms in the semiconductor channel, allowing current to flow. This voltage-controlled mechanism enables fast switching (nanosecond to microsecond ranges) with minimal driving power, making them ideal for pulse-width modulation (PWM) control in charging systems.
材料
Silicon (Si) or Silicon Carbide (SiC) semiconductor wafers with aluminum or copper metallizationsilicon dioxide gate insulationand plastic/epoxy encapsulation. Advanced versions may use gallium nitride (GaN) for higher frequency operation.
Package Type
TO-220, TO-247, D2PAK, SMD
On-Resistance
1mΩ to 100mΩ
Current Rating
10A to 200A
Voltage Rating
30V to 1000V
Switching Speed
<100ns
Gate Threshold Voltage
2V to 4V
标准
ISO 9001IEC 60747-8JEDEC JESD24

行业分类与别名

功率MOSFET 的常用贸易名称、技术标识和检索关键词。

上级产品

该组件会出现在以下整机或工业产品中。

FMEA · 风险与缓解

诱因 → 失效模式 → 工程缓解

Overvoltage transients on drain-source->Avalanche breakdown and permanent short circuit->Implement snubber circuits and overvoltage protection diodes
Excessive junction temperature (>150°C)->Thermal runaway and catastrophic failure->Use adequate heatsinks, thermal interface materials, and temperature monitoring
ESD during installation->Gate oxide puncture and component failure->Follow ESD-safe handling procedures and use protective packaging

工业生态与工程逻辑

0
Thermal runaway due to poor heatsinking
1
Gate oxide breakdown from voltage spikes
2
Electrostatic discharge (ESD) damage during handling

合规与检测

tolerance
±5% on electrical parameters under specified conditions
test method
Dynamic parameter testing per IEC 60747-8, including switching characteristics, on-resistance, and thermal impedance measurements

制造该组件的工厂

来自 CNFX 组件能力表的相关制造商资料。

制造商列表用于前期研究和供应商能力理解,不代表认证、排名或交易担保。

采购评估维度

不是客户评论,也不是实时热度。以下维度用于前期 RFQ 准备和供应商评估。

技术文档
4/5
制造能力
4/5
可检验性
5/5
供应商透明度
3/5

这些分值是采购评估维度示例,不代表真实客户评分、具体国家买家反馈或实时询盘。

相关组件

常见问题

What is the main advantage of Power MOSFETs in charging controllers?

They provide high efficiency through fast switching and low conduction losses, reducing heat generation and improving battery charging precision.

Can Power MOSFETs be used in parallel for higher current?

Yes, but careful matching of parameters and thermal management is required to ensure current sharing and prevent thermal runaway.

How does gate drive voltage affect MOSFET performance?

Insufficient gate voltage increases on-resistance and switching losses, while excessive voltage can damage the gate oxide. Typical drives are 10-15V.

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初步技术归类
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