Equivalent & Substitute Parts for Ohmite 41JR50

Part Overview

The Ohmite 41JR50 is a 500 mOhms ±5% 1W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is in active production status and designed for applications requiring precision current-sensing or low-resistance load applications in through-hole configurations. Substitute parts are identified to provide alternative sourcing options while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

41JR50

OhmiteIn Stock: 113541JR50 Datasheet

Current PartRFQ

41JR50E

OhmiteIn Stock: 108841JR50E Datasheet

Parametric EquivalentRFQ

41JR50E

OhmiteIn Stock: 108841JR50E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 41JR50 are qualified based on matching the following critical parameters:

• Resistance value: 500 mOhms
• Tolerance: ±5%
• Power rating: 1W
• Composition: Wirewound
• Package: Axial through-hole
• Temperature coefficient: ±90ppm/°C
• Physical dimensions: 0.126" Dia x 0.437" L (3.20mm x 11.10mm)
• Number of terminations: 2

The 41JR50E meets all electrical and mechanical specifications required for direct substitution. Differences in packaging format (tape/reel versus bulk) and compliance certifications do not affect functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 41JR50 and 41JR50E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on:

• RoHS compliance requirements: The 41JR50E is RoHS Compliant, while the 41JR50 is RoHS non-compliant. Applications subject to RoHS directives require the 41JR50E.
• Packaging requirements: The 41JR50E is supplied in bulk packaging, while the 41JR50 uses standard packaging. Procurement and assembly processes may dictate packaging preference.
• Moisture sensitivity: The 41JR50E specifies MSL 1 (Unlimited), indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the 41JR50E be used as a direct replacement for the 41JR50 in existing designs?

A: Yes. The 41JR50E is electrically and mechanically equivalent. Both components have identical resistance (500 mOhms), tolerance (±5%), power rating (1W), temperature coefficient (±90ppm/°C), and axial package dimensions (0.126" Dia x 0.437" L). No circuit modifications are required.

Q: What is the difference between the 41JR50 and 41JR50E?

A: The primary differences are packaging format (standard versus bulk) and compliance certifications. The 41JR50E is RoHS Compliant with MSL 1 rating, while the 41JR50 is RoHS non-compliant. Electrical performance is identical.

Q: Are there any thermal or frequency limitations when substituting the 41JR50E for the 41JR50?

A: No. Both parts share the same temperature coefficient (±90ppm/°C) and power dissipation characteristics. Thermal and frequency performance are equivalent.

Q: Does packaging format affect circuit performance?

A: No. Packaging format (tape/reel versus bulk) affects only procurement and assembly logistics. Electrical and mechanical performance of the component itself is unaffected.

Q: Which part should be selected for new designs?

A: For new designs subject to RoHS compliance requirements, the 41JR50E is the appropriate selection. For applications without RoHS constraints, either part is functionally suitable based on availability and procurement preferences.