
概述
Wirewound resistors are produced by precision-winding high-stability alloy wire (such as nickel-chromium or constantan) onto a high-strength ceramic core, then high-temperature curing and applying a protective coating. This construction delivers excellent thermal stability and electrical consistency, maintaining stable performance over a wide temperature range and at high loads. Features include extremely low temperature coefficient (TCR), low thermal EMF, low noise and excellent long-term stability — ideal for high-precision measurement, current sampling and demanding industrial environments. Non-inductive winding designs are available to substantially reduce parasitic inductance, suitable for high-frequency or pulse applications.
主要特性
- TCR as low as ±5 ppm/°C (premium models)
- Long-term drift ≤ 0.1% / 1000h
- Tolerance down to ±0.1% (or tighter)
- Metal-wirewound construction with very low intrinsic noise
- Suitable for precision sensing and signal sampling
- Ceramic core + wirewound design dissipates heat efficiently
- Supports pulse loads and transient surge currents
- Bifilar / counter-wound techniques
- Significantly lower parasitic inductance for HF circuits
- Heat-, humidity- and vibration-resistant
- Industrial-grade reliability (military / automotive grades available)
- Axial
- Through-hole
- Surface mount (SMT / MELF)
典型应用

Wirewound Resistors 型号对比
本系列各型号的并排规格对比 — 功率范围、阻值范围、精度、工作温度与典型应用。
| 规格项 | 1/8W - 30W · Custom ResistanceRX21 绕线电阻 | 5-30W · Custom ResistanceKZN 绕线电阻 | 10-1000W · Custom Resistance大功率绕线电阻 |
|---|---|---|---|
| 产品名称 | RX21 绕线电阻 | KZN 引脚穿孔绕线电阻 | — |
| 应用领域 | 精密仪器 / 通信设备 | 精密仪器 / 通信设备 | — |
| 功率范围 | 1/8W ~ 30W | 5W ~ 30W | 25W ~ 2000W |
| 阻值范围 | 0.1Ω ~ 10kΩ(按功率分段) | 0.1Ω ~ 10kΩ(按功率分段) | 0.22Ω ~ 43kΩ(按功率分段) |
| 阻值精度 | ±1% / ±2% / ±5% | ±1% / ±2% / ±5% | ±5% / ±10% |
| 表面处理 | 环保绿色绝缘涂层 | 环保绿色绝缘涂层 | 绿色阻燃涂层 · 绝缘屏蔽涂层 |
| 耐压 | 300V ~ 1000V | 300V ~ 1000V | — |
| 引线 | 铜引线 — 与陶瓷本体牢固结合 | 铜引线 — 与陶瓷本体牢固结合 | — |
| 温度系数 (TCR) | ±300 PPM/℃ | ±300 PPM/℃ | — |
| 工作温度 | -55℃ ~ +275℃(70°C 以上降额) | -55℃ ~ +275℃(70°C 以上降额) | -55℃ ~ +275℃(70°C 以上降额) |
| 可定制尺寸 | 支持非标定制 | 支持非标定制 | 单管多阻值 / 规格与尺寸均可按客户需求定制 |
| 原产地 | 中国大陆 | 中国大陆 | — |
| 产品系列 | — | — | 大功率绕线电阻系列 |
| 外形封装 | — | — | 固定式 / 可调式 |
| 安装支架 | — | — | 镀锌金属支架(可选,可拆卸) |
| 防护 | — | — | 防潮 · 防雾 · 抗过载 · 热稳定性好 |
| 查看详情 | 查看详情 | 查看详情 | 查看详情 |
常见问题
精密绕线电阻的公差和 TCR 能做到多少?
绕线电阻有电感吗 —— 如何实现无感设计?
精密绕线电阻和薄膜电阻在电流检测应用中如何比较?
绕线电阻能承受短时过载或脉冲电流吗?
可以定制阻值吗?精度步进是多少?
申请样品
标准样品在合理数量内免费提供(2–3 个工作日内寄出)。定制样品 2–4 周内交付。请通过右侧表单告知我们:
- 公司及联系方式
- 目标型号或关键参数(功率 / 阻值 / 封装)
- 应用场景及预计年用量
- 收货地址及期望交付日期


