Precision Chip Resistors for Motor Control
In advanced motor-control applications—ranging from industrial automation to vehicle electrification—electronic components must deliver precision and stability under harsh operating conditions. Temperature cycling, vibration, shock, and electrical transients can all impact performance, especially in feedback, sensing, and voltage-monitoring networks. KOA’s precision thick-film and thin-film chip resistors are designed to support reliable, efficient operation in these demanding environments.
High Precision & High Reliability Chip Resistors
Thin Film Technology
RN73R/ RN73H-Series
KOA’s RN73R and RN73H metal film chip resistors provide high-precision options with tolerances down to ±0.05% and TCR down to ±5 ppm/K, supporting accurate and stable control behaviour in motor-drive feedback and measurement circuits.
The RN73H series is positioned for tough environments (automotive & industrial) and features improved moisture resistance by an additional inner inorganic passivation layer, with endurance at 85°C (3,000 h) specified at ΔR ±0.1%.
Applications
- Automotive
- Motor controls
- AC adapters
- A/D signal conversion
- Switching boards
- Industrial equipment and measurement
- Medical equipment
Thick Film Technology
RS73-Series
KOA’s new RS73 series are metal-glaze thick film chip resistors designed for high precision and high reliability and are ESD transient tolerant—a strong fit for sensitive voltage-detection and sensing networks used in motor control and drive electronics. RS73 offers tolerances down to ±0.1% and TCR down to ±25 ppm/K, combining thick-film robustness and long-term stability. Products meet EU-RoHS requirements and are AEC-Q200 qualified.
Applications
- High precision circuits for automotive and industrial
- Motor controls
- AC adapters
- A/D signal conversion
- Switching boards
- Industrial equipment & measurement
- Medical equipment
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