TT Electronics presents its specialized PFC Special Series Precision Thin Film Chip Resistors, engineered for applications necessitating precision and reliability under extreme conditions. These resistors feature the use of Tantalum Nitride film, contributing to their long-term stability and dependability in various environments. The series showcases resistors in 0402, 0603, 0805, and 1206 sizes, which are tested for commercial, off-the-shelf (COTS) applications and offer anti-sulfuration properties suitable for automotive and heavy equipment use.
The PFC series is available with both standard 60/40 Sn/Pb and Pb-free terminations, adhering to the latest RoHS compliance requirements. The Pb-free parts fulfill the directives stipulated by the EU, specifically 2011/65/EU and its amendment in 2015/863 (RoHS3), making them a responsible choice for environmentally-conscious manufacturers.
Electrical and Environmental Specifications
The datasheet details the power rating, maximum voltage rating, and temperature range for each resistor variant. For instance, the W0402 can withstand power up to 50mW and voltage up to 75V, while the W1206 variant tolerates up to 333mW of power and 200V. The operating temperature range for all models is from -55°C to +150°C, and they feature a 2KV to 4KV electrostatic discharge (ESD) immunity.
Performance and Reliability
Ensuring high-quality performance, these resistors demonstrate minimal changes under various conditions, such as short-time overload, thermal shock, and exposure to high temperatures, as per the tests conducted according to MIL-PRF-55342 standards. The electrical noise level is below -25dB, indicating low noise production in electronic circuits. The chips use 99.5% alumina substrate for robust construction and are protected by wrap-around terminations with leach-resistant nickel barriers.
Manufacturing and Tolerance Levels
Leveraging the same production line as the Military Series, the PFC chips ensure exceptional performance under harsh soldering conditions. They are available in tolerances ranging from 0.02% to 0.1-5%, and with temperature coefficient of resistance (TCR) values spanning from 5ppm/°C to 100ppm/°C, accommodating various resistance requirements from 50Ω to over 1MΩ.
Additional Features
A power derating curve highlights the operational stability across temperature ranges, and MIL screening is available for applications that demand adherence to military specifications. TT Electronics also reserves the right to alter product specifications without prior notice.
For comprehensive information or any updates to specifications, users may refer to the official TT Electronics website under the resistors section or refer to separate datasheets for MIL-CHIP and Pb-free PFC Commercial Series resistors.
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