行业组件数据 · 2026

低压分接电阻器

Precision resistor for voltage division in measurement circuits

技术定义与适配语境
典型 低压分接电阻器 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。

A low-voltage tap resistor is a precision electrical component designed to create voltage division in measurement circuits, typically used in voltage measurement dividers to step down high voltages to measurable low-voltage signals. It features multiple connection points (taps) along its resistive element to provide different voltage ratios.

组件规格

定义
A low-voltage tap resistor is a precision electrical component designed to create voltage division in measurement circuits, typically used in voltage measurement dividers to step down high voltages to measurable low-voltage signals. It features multiple connection points (taps) along its resistive element to provide different voltage ratios.
工作原理
Operates on Ohm's Law (V=IR) to create precise voltage drops across its resistive element. When connected in series within a voltage divider circuit, it proportionally reduces input voltage based on its resistance value and tap position, enabling safe measurement of high voltages with standard instruments.
材料
Resistive element: Nickel-chromium alloy or precision metal filmSubstrate: Ceramic or aluminaTerminals: Copper alloy with tin platingProtective coating: Epoxy resin or silicone
Tolerance
±0.1% to ±1%
Termination
Through-hole or surface mount
Power Rating
0.25W to 2W
Number of Taps
2 to 10
Voltage Rating
Up to 1000V
Resistance Range
1Ω to 10MΩ
Operating Temperature
-55°C to +155°C
Temperature Coefficient
±10ppm/°C to ±100ppm/°C
标准
ISO 9001IEC 60115MIL-R-10509

行业分类与别名

低压分接电阻器 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

Excessive power dissipation->Resistor overheating and permanent damage->Proper power rating selection, adequate heat sinking, and current limiting
Moisture ingress->Corrosion and resistance value change->Proper sealing, conformal coating, and environmental protection
Mechanical stress on terminals->Cracked connections or broken resistive element->Proper mounting, strain relief, and vibration damping

工业生态与工程逻辑

0
Overheating due to excessive current
1
Voltage breakdown at high voltages
2
Resistance drift over time
3
Poor contact at tap points
4
Environmental contamination

合规与检测

tolerance
±0.1% to ±1% depending on precision requirements
test method
Four-wire resistance measurement, temperature cycling test, voltage withstand test, insulation resistance test

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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 purpose of a low-voltage tap resistor?

To safely step down high voltages to measurable low-voltage levels in measurement circuits, enabling accurate voltage monitoring with standard instruments.

How do I select the right tap resistor for my application?

Consider required resistance value, tolerance, power rating, voltage rating, temperature coefficient, and number of taps needed for your specific voltage division ratio.

What maintenance do tap resistors require?

Regular inspection for physical damage, cleaning of terminals, verification of resistance values, and monitoring for temperature-related drift in precision applications.

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