行业组件数据 · 2026

端子

Terminals are conductive components in power semiconductor devices that provide electrical connection points for external circuits.

技术定义与适配语境
典型 端子 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。

Terminals are critical conductive interface components in power semiconductor devices designed to establish secure electrical connections between the device's internal circuitry and external wiring or busbars. They serve as the primary points for power input/output, gate control signals, and auxiliary connections, ensuring reliable current transfer while maintaining mechanical stability and thermal management.

组件规格

定义
Terminals are critical conductive interface components in power semiconductor devices designed to establish secure electrical connections between the device's internal circuitry and external wiring or busbars. They serve as the primary points for power input/output, gate control signals, and auxiliary connections, ensuring reliable current transfer while maintaining mechanical stability and thermal management.
工作原理
Terminals function by providing a conductive pathway between the semiconductor die and external circuits through metallurgical bonding (such as soldering, welding, or pressure contact). They maintain electrical continuity while withstanding thermal expansion, mechanical stress, and environmental factors. The working principle involves optimizing contact resistance, current density distribution, and heat dissipation to prevent hotspots and ensure long-term reliability.
材料
Copper alloys (C11000C19400)aluminum alloys (60611100)nickel-plated steelor silver-plated materials. High-temperature applications may use tungsten-copper composites or molybdenum. Insulation components typically use ceramic (alumina)thermoset plastics (PBTPPS)or high-temperature polymers.
Current Rating
10A-5000A
Voltage Rating
Up to 6500V
Mechanical Life
>1000 mating cycles
Temperature Range
-55°C to +175°C
Contact Resistance
<0.5mΩ
Dielectric Strength
>2500VAC
Insulation Resistance
>1000MΩ
标准
ISO 8092DIN 46234IEC 60947UL 310

行业分类与别名

端子 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

Insufficient contact pressure or surface contamination->Increased contact resistance leading to overheating->Implement proper torque specifications, use contact enhancers, and maintain clean contact surfaces
Thermal cycling stress->Fatigue cracking of terminal joints->Use compliant terminal designs, thermal interface materials, and matched CTE materials
Environmental exposure to moisture or chemicals->Corrosion and insulation degradation->Apply protective coatings, use corrosion-resistant materials, and implement proper sealing

工业生态与工程逻辑

0
Overheating due to poor contact
1
Mechanical failure from vibration
2
Corrosion in harsh environments
3
Electrical arcing at high voltages
4
Thermal stress cracking

合规与检测

tolerance
±0.1mm for critical dimensions, ±5% for electrical parameters
test method
Electrical continuity testing, thermal cycling (IEC 60068-2-14), vibration testing (IEC 60068-2-6), salt spray testing (ISO 9227)

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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 are the main types of terminals in power semiconductor devices?

Main types include power terminals (for main current paths), gate terminals (for control signals), auxiliary terminals (for sensing or monitoring), and Kelvin terminals (for precise voltage measurement).

How do terminals affect thermal performance in semiconductor devices?

Terminals contribute significantly to thermal management by conducting heat away from the semiconductor die. Proper terminal design with adequate cross-sectional area and thermal interface materials reduces junction temperature and improves device reliability.

What materials are best for high-temperature terminal applications?

Copper-tungsten composites, molybdenum, and nickel-plated materials offer excellent performance in high-temperature environments due to their thermal conductivity, mechanical strength, and oxidation resistance.

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CNFX Industrial Component Index · 电气设备制造

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初步技术归类
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URN:CNFX:ME:UNIT:TERMINALS