TT Electronics Welwyn RC55 Series 332kΩ 0.25W ±0.1% Metal Film Resistor

The TT Electronics Welwyn RC55 Series is a high-precision, axial-leaded metal film resistor, engineered for applications demanding exceptional accuracy and stability. With a resistance value of 332kΩ and a tight tolerance of ±0.1%, this component ensures reliable and consistent performance in critical circuits.

These precision resistors are constructed using a metal film deposited onto a high-quality ceramic former. Nickel-plated steel caps are force-fitted to the former, and the termination wires are securely welded to these caps, ensuring excellent mechanical and electrical connections. The resistance value is precisely adjusted via a helical cut in the film, and the entire component is protected by a specially formulated, durable epoxy coating for long-term environmental protection.

Key Features & Performance

• Superior Stability: Features a low temperature coefficient of ±15ppm/°C, minimising resistance drift across a wide operating temperature range from -55°C to +155°C.
• Reliable Power Handling: Rated for 0.25W (250mW) with a limiting element voltage of 350V, making it suitable for a variety of electronic designs.
• Clean Signal Performance: Exhibits low noise and a negligible voltage coefficient, ideal for sensitive analogue and measurement circuitry where signal integrity is paramount.
• Precision Construction: The metal film technology and helical adjustment process guarantee the specified high precision and long-term reliability.

As part of the renowned RC55 series, this resistor is available in a comprehensive range of E24 and E96 values from 1Ω to 4MΩ, with multiple tolerance and temperature coefficient options to suit specific design requirements.