Overview
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.
Key Features
- 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)
Typical Applications
Sample Request
Standard samples are provided free of charge in reasonable quantities (shipped within 2–3 business days). Custom samples are delivered within 2–4 weeks. Please use the form on the right to tell us:
- Company and contact details
- Target part number or key specs (power / resistance / package)
- Application scenario and estimated annual volume
- Shipping address and expected delivery date