WSR2R4000FEB Equivalent & Substitute Parts

Part Overview

The WSR2R4000FEB is a 400 mOhms ±1% 2W 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, and moisture resistance in a 4527 J-Lead package. The part is active in production with 1127 units currently in stock. Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

WSR2R4000FEB

Vishay DaleIn Stock: 1229WSR2R4000FEB Datasheet

Current PartRFQ

WSR2R4000FEA

Vishay DaleIn Stock: 3588WSR2R4000FEA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the WSR2R4000FEB is determined by strict equivalence across the following critical parameters:

• Resistance value: 400 mOhms
• Tolerance: ±1%
• Power rating: 2W
• Package type: 4527 J-Lead
• Composition: Metal Element
• Temperature coefficient: ±75ppm/°C
• Operating temperature range: -65°C ~ 275°C
• Automotive qualification: AEC-Q200
• RoHS compliance: ROHS3 Compliant
• Moisture sensitivity level: 1 (Unlimited)

The WSR2R4000FEA meets all specified parameters and qualifies as a direct substitute. Both parts are manufactured by Vishay Dale within the WSR series and share identical electrical and mechanical characteristics.

Parameter Comparison

Engineering Selection Recommendations

The WSR2R4000FEA is a qualified equivalent substitute for the WSR2R4000FEB. Both parts are active production items manufactured by Vishay Dale with identical electrical specifications, mechanical dimensions, and automotive qualifications. Selection between these parts may be based on inventory availability, supply chain logistics, or procurement preferences, as they are functionally interchangeable in all applications requiring a 400 mOhms ±1% 2W current sense resistor with AEC-Q200 qualification and ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can WSR2R4000FEA be used in place of WSR2R4000FEB?

A: Yes. The WSR2R4000FEA is a direct equivalent substitute. Both parts share identical resistance, tolerance, power rating, temperature coefficient, operating temperature range, package dimensions, and automotive qualifications.

Q: Are there any differences in the 4527 J-Lead package between these parts?

A: No. Both parts use the identical 4527 J-Lead package with matching dimensions (0.455" L x 0.275" W, 11.56mm x 6.98mm) and maximum seated height (0.100" / 2.54mm).

Q: Do both parts meet AEC-Q200 automotive standards?

A: Yes. Both WSR2R4000FEB and WSR2R4000FEA are AEC-Q200 qualified and suitable for automotive applications requiring current sense resistors.

Q: What is the moisture sensitivity level for these parts?

A: Both parts have Moisture Sensitivity Level 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

Q: Are both parts ROHS3 compliant?

A: Yes. Both parts are ROHS3 compliant and meet environmental regulatory requirements.

Q: What is the temperature coefficient difference between these substitutes?

A: There is no difference. Both parts have an identical temperature coefficient of ±75ppm/°C across the -65°C ~ 275°C operating range.