Vishay Dale WSLP27261L000FEA

WSLP27261L000FEA Vishay Dale Chip Resistor—Product Summary

The WSLP27261L000FEA from Vishay Dale is a surface-mount, power metal strip resistor tailored for high-power current sensing in modern electronics. Designed with a resistance of 1 mΩ (0.001 Ω) and a power rating of 7 W, this resistor targets automotive, industrial, and power management applications where precise, low-ohm resistors are critical. The device comes in a 2726 (6.8 mm × 6.2 mm) package and is certified to AEC-Q200, making it suitable for demanding operational environments.

Highlighted Attributes and Design of WSLP27261L000FEA

The WSLP27261L000FEA leverages Vishay Dale’s Power Metal Strip® technology, utilizing an all-welded construction for exceptional power density and mechanical reliability. Its robust metal element—constructed from nickel-chrome or manganese-copper alloys—provides a proprietary, ultra-low resistance capability, with total TCR (Temperature Coefficient of Resistance) less than 20 ppm/°C. This ensures extremely stable performance over temperature variations.

Notably, the product is formulated with anti-sulfur materials, resisting degradation in environments with high sulfur content—a common failure point in automotive and industrial locations. The low inductance (0.5 nH to 5 nH) and low thermal electromotive force (EMF, < 3 μV/°C) further enhance accuracy during high-current measurements and rapid load changes. These attributes position the WSLP27261L000FEA as a premier solution for pulse handling and transient applications.

Electrical and Physical Properties of WSLP27261L000FEA

Engineers will appreciate the resistor’s strict tolerances: 1% resistance accuracy at 1 mΩ, ensuring precise current sensing. The component is rated for continuous operation at up to 7 W when mounted with optimal thermal design, with performance governed by the temperature at the solder joint (rated to 100°C).

Key parameters of the WSLP27261L000FEA include:

Resistance: 0.001 Ω

Power rating: 7 W (at terminal temperature of 100°C)

Tolerance: ±1%

Package: 2726 (metric 6862, dimensions in mm: 6.8 × 6.2)

Maximum working voltage: Application is power/energy dissipation-limited, as resistor is not voltage sensitive nor ESD sensitive

Inductance: 0.5 to 5 nH (negligible for most current sensing)

Terminal construction: All-welded, solid metal for mechanical integrity

Dependability, Environmental Certifications, and Regulatory Compliance for WSLP27261L000FEA

Reliability is a focal point of the WSLP27261L000FEA. The resistor is qualified to AEC-Q200, meeting stringent automotive and high-reliability industry criteria. Its design resists sulfur-induced corrosion and passes rigorous moisture and pulse-loading tests, making it dependable in harsh environments. The resistor is RoHS compliant and halogen free, supporting eco-friendly manufacturing. Product marking includes model, value, tolerance, and date code for full traceability.

Heat Dissipation and Application Insights for WSLP27261L000FEA

To fully leverage the WSLP27261L000FEA’s power handling, engineers must address board-level thermal management. The full rated 7 W can only be achieved if the PCB and surrounding system effectively dissipate the resulting heat. Large copper pads, thermal vias, thicker copper layers, and sufficient ventilation or heatsinking are recommended. This aligns with standard practices for power semiconductor board layouts. Engineers designing high-density power systems, automotive ECUs, or battery management circuits will find these considerations vital to maintain reliability and resistor performance within specifications.

WSLP27261L000FEA—Packaging, Storage, and Installation

The WSLP27261L000FEA is supplied in embossed carrier tape, compatible with standard automated surface mount assembly. Correct solder profile (detailed in Vishay guidelines) ensures optimal electrical and mechanical interfaces to the PCB. The robust packaging and all-metal outer construction support high-reliability assembly and minimize the risk of damage during handling or pick-and-place processes.

Alternative or Substitute Models for WSLP27261L000FEA

While the WSLP27261L000FEA is part of Vishay Dale’s specialized Power Metal Strip® WSLP2726 series, designers may consider other resistors in the same family for alternate resistance values or higher/lower power ratings. Competing products from other manufacturers may offer similar low-ohm, high-power, surface-mount current sense resistors—always verify TCR, pulse handling, anti-sulfur performance, and Q200 qualification for compatibility in automotive or high-reliability environments. It is recommended to consult datasheets and perform benchmark evaluations before final selections.

Conclusion

—WSLP27261L000FEA’s value for engineers and procurement

For applications demanding precision, high-power current sensing in space-optimized surface-mount formats, the WSLP27261L000FEA from Vishay Dale provides an industry-leading mix of rugged construction, stable low resistance, and proven reliability. Its compliance with environmental and automotive standards, as well as its superior anti-sulfur and power handling properties, make it a dependable component for engineers and procurement teams seeking long-term reliability and accurate current detection in advanced power electronics.