41J4R0 Equivalent & Substitute Parts

Part Overview

The Ohmite 41J4R0 is a 4 Ohm, 1W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision resistive elements with wirewound construction and tight tolerance specifications. The part is currently active in production with 956 units in stock. Substitute parts are identified to address packaging variations and compliance requirements while maintaining identical electrical and mechanical specifications.

Substiute Parts

41J4R0

OhmiteIn Stock: 100541J4R0 Datasheet

Current PartRFQ

41J4R0E

OhmiteIn Stock: 83941J4R0E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 41J4R0 is determined by strict equivalence across electrical and mechanical parameters. The primary substitute, 41J4R0E, maintains identical specifications for resistance value, tolerance, power rating, composition, temperature coefficient, package type, and physical dimensions. The distinction between these parts is limited to packaging format (standard vs. bulk) and RoHS compliance status. Both parts are manufactured by Ohmite and belong to the same Ohmicone® 40 series, ensuring functional interchangeability in circuit applications where the specified electrical characteristics are required.

Parameter Comparison

Engineering Selection Recommendations

Selection between 41J4R0 and 41J4R0E depends on regulatory and procurement requirements rather than electrical performance, as both parts are electrically and mechanically identical.

The 41J4R0E is the appropriate choice for applications subject to ROHS3 compliance mandates or procurement specifications requiring RoHS-compliant components. This variant maintains full functional equivalence while meeting current environmental and material restriction standards.

The 41J4R0 remains suitable for applications without RoHS compliance requirements or legacy systems where non-compliant components are acceptable. Both parts are active products with adequate inventory availability.

Frequently Asked Questions (FAQ)

Q: Are 41J4R0 and 41J4R0E electrically interchangeable?

A: Yes. Both parts are identical in resistance value (4 Ohms), tolerance (±5%), power rating (1W), temperature coefficient (±50ppm/°C), and composition (wirewound). They are functionally equivalent for all circuit applications.

Q: What is the difference between these two part numbers?

A: The primary differences are packaging format (standard vs. bulk) and RoHS compliance status. The 41J4R0E is ROHS3 compliant, while the 41J4R0 is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can I use 41J4R0E as a direct replacement for 41J4R0?

A: Yes, 41J4R0E is a direct substitute for 41J4R0 in all applications. The identical axial package dimensions (0.126" Dia x 0.437" L) ensure mechanical compatibility with existing PCB layouts and through-hole mounting.

Q: Which part should I specify for new designs?

A: For new designs subject to RoHS compliance requirements, specify 41J4R0E. For applications without RoHS mandates, either part is acceptable based on availability and procurement preferences.

Q: Are there any performance differences between bulk and standard packaging?

A: No. Packaging format does not affect electrical performance or reliability. The choice between bulk and standard packaging is determined by procurement volume requirements and inventory management practices.