Vishay Dale CRCW12062K49FKEAC

Introduction to Vishay Dale CRCW12062K49FKEAC

The Vishay Dale CRCW12062K49FKEAC is a surface-mount, thick film chip resistor designed for high-volume commercial applications. With a resistance of 2.49 kΩ, a tight ±1% tolerance, and a standard 1/4W (0.25 W) power rating, this resistor is housed in the widely used 1206 metric package. Its robust electrical and mechanical specifications enable reliable, stable operation in a broad range of circuit designs, making it a critical choice for engineers seeking precision and consistency in resistor selection.

Main attributes of the CRCW12062K49FKEAC surface-mount resistor

The CRCW12062K49FKEAC chip resistor incorporates several key features that make it well-suited to demanding environments and diverse applications. A notable advantage is its excellent stability, with a maximum resistance drift of ≤1% over 1,000 hours at 70°C, which ensures long-term reliability. The device is built with lead (Pb)-free solder contacts over a nickel barrier layer, making it both RoHS compliant and halogen-free. Its high-volume manufacturability and commercial-grade quality position it as an ideal choice for mid- to large-scale electronic manufacturing.

CRCW12062K49FKEAC Electrical and physical specifications

This 1206 (3216 metric) chip resistor delivers a resistance value of 2.49 kΩ with a precision of ±1%. The device supports a 0.25W (1/4W) maximum power rating, provided the maximum film temperature of 155 °C is not exceeded. Notably, the device’s actual power dissipation must take into account the PCB’s thermal characteristics, placement density, and ambient temperature, as these influence the solder point temperature and long-term reliability. Vishay Dale ensures that as long as permissible limits are not exceeded, the CRCW12062K49FKEAC does not possess a limited lifetime; however, resistance changing over operational time could eventually impact end-system tolerance requirements.

Material composition and build details of CRCW12062K49FKEAC

The CRCW12062K49FKEAC’s construction is centered on a metal glaze film deposited onto ceramic, which delivers a stable resistor element. The resistor’s terminations utilize lead-free solder on a nickel barrier, supporting both RoHS and halogen-free standards. The use of thick film technology in this resistor offers a good balance of cost, precision, and reliability, particularly suited to automated pick-and-place assembly lines. Designers should utilize the recommended solder pad dimensions per IPC-7351 and IEC 61188-5-x standards for achieving optimal PCB assembly and thermal performance.

Compliance and environmental properties of CRCW12062K49FKEAC

Vishay Dale has produced the CRCW12062K49FKEAC to comply with modern environmental norms. The product is classified as RoHS complaint and halogen-free, reflecting its suitability for regions and industries with strict hazardous substance regulations. The resistor is also constructed with materials selected for minimal environmental impact, detailed further in Vishay’s compliance documentation. Engineers should monitor specific regulations relevant to their end product applications to ensure smooth certification and market access.

Design guidelines and application tips for CRCW12062K49FKEAC

Integrating the CRCW12062K49FKEAC into a PCB design requires attention to component thermal management and board layout. When pushing the power rating beyond 125°C solder point temperatures, the implementation of dedicated heat-sink pads may be required. The choice of substrates and solder alloys can further influence thermal dissipation and joint reliability. In automated assembly, adherence to IPC-7351 and IEC 61188 standards for land pattern ensures the highest reflow solder quality. The resistor’s exceptional resistance stability and robust construction make it particularly suitable for precision analog circuits, voltage dividers, pull-up/pull-down networks, and signal processing applications, where tight tolerance and long term performance are essential.

Alternative or substitute models for CRCW12062K49FKEAC

For engineers evaluating products for second-sourcing or supply chain stability, it is prudent to identify equivalent or alternative models to the CRCW12062K49FKEAC. Comparable 1206, 2.49 kΩ, 1%, 1/4W thick film chip resistors from other manufacturers, such as the Yageo RC1206FR-072K49L or Panasonic ERJ-8ENF2491V, may serve as functional replacements, subject to final verification of temperature coefficient, solderability, and compliance specifics. Thorough review of similar models’ datasheets for mounting footprint compatibility, electrical tolerance, and material declarations is essential before finalizing alternate sourcing options.

Conclusion

: Integrating CRCW12062K49FKEAC into modern electronic designs

The Vishay Dale CRCW12062K49FKEAC stands out for its blend of stability, environmental responsibility, and manufacturability. Its combination of industry-standard 1206 footprint, 2.49 kΩ ±1% specification, and RoHS/halogen-free compliance make it a high-reliability choice for commercial and industrial designs. By understanding the device’s features, application requirements, and available equivalents, purchasing and engineering teams can make informed choices that support robust, future-proof electronic products.