WSLP40261L000FEA Equivalent & Substitute Parts

Part Overview

The WSLP40261L000FEA is a 1 mOhms ±1% 7W chip resistor manufactured by Vishay Dale, designed for current sense applications in automotive environments. This metal element resistor features anti-sulfur coating, AEC-Q200 qualification, moisture resistance, and pulse withstanding capability. The part is currently active in production with 2000 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

WSLP40261L000FEA

Vishay DaleIn Stock: 2100WSLP40261L000FEA Datasheet

Current PartRFQ

WSLP27261L000FEA

Vishay DaleIn Stock: 1492WSLP27261L000FEA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WSLP40261L000FEA is determined by the following critical parameters:

• Resistance value: 1 mOhms
• Tolerance: ±1%
• Power rating: 7W
• Composition: Metal Element
• Temperature coefficient: ±75ppm/°C
• Operating temperature range: -65°C ~ 170°C
• Feature set: Anti-Sulfur, Automotive AEC-Q200, Current Sense, Moisture Resistant, Pulse Withstanding
• Number of terminations: 4
• RoHS and environmental compliance: ROHS3 Compliant, MSL 1

The WSLP27261L000FEA meets all these electrical and functional requirements. The primary difference is the package form factor (4026 vs. 2726) and packaging method (Tape & Reel vs. Cut Tape & Digi-Reel®), which do not affect electrical performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the WSLP40261L000FEA and WSLP27261L000FEA are active production parts from Vishay Dale with identical electrical specifications and AEC-Q200 automotive qualification. Selection between these parts should be based on:

PCB layout constraints: The WSLP27261L000FEA has a shorter length (6.90mm vs. 10.16mm), making it suitable for space-constrained applications. The WSLP40261L000FEA provides a larger footprint if layout permits.

Packaging requirements: The WSLP40261L000FEA is supplied in Tape & Reel format, while the WSLP27261L000FEA is available in Cut Tape and Digi-Reel® formats. Procurement and assembly processes should determine the appropriate packaging method.

Both parts maintain identical electrical performance, temperature stability, and automotive compliance ratings. Substitution is electrically valid when PCB layout accommodates the dimensional differences.

Frequently Asked Questions (FAQ)

Q: Can WSLP27261L000FEA replace WSLP40261L000FEA in existing designs?

A: Yes, from an electrical standpoint. The WSLP27261L000FEA has identical resistance, tolerance, power rating, temperature coefficient, and operating range. The primary consideration is PCB layout compatibility, as the WSLP27261L000FEA is shorter (6.90mm vs. 10.16mm in length). Verify that the footprint and mounting area accommodate the smaller package size.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, AEC-Q200 qualified, and carry identical feature sets including anti-sulfur coating, moisture resistance, and pulse withstanding capability. Environmental ratings and reliability classifications are equivalent.

Q: What is the impact of different packaging formats?

A: Packaging format (Tape & Reel vs. Cut Tape & Digi-Reel®) affects procurement, storage, and assembly processes but does not impact electrical performance or circuit functionality. Select based on your manufacturing and supply chain requirements.

Q: Are the thermal characteristics identical?

A: Yes. Both parts have the same temperature coefficient (±75ppm/°C), operating temperature range (-65°C ~ 170°C), and power dissipation rating (7W). Thermal performance in circuit applications is equivalent.

Q: Can I use these parts interchangeably in automotive applications?

A: Both parts meet automotive AEC-Q200 standards and are suitable for automotive current sense applications. Interchangeability is valid provided PCB layout accommodates the dimensional differences of the substitute part.