Ohmite 43JR30 Equivalent & Substitute Parts

Part Overview

The Ohmite 43JR30 is a 300 mOhms ±5% 3W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production with 902 pieces available in new original stock. Substitute parts are identified when equivalent electrical and mechanical parameters are required for component procurement, inventory management, or design flexibility while maintaining identical functional performance.

Substiute Parts

43JR30

OhmiteIn Stock: 97043JR30 Datasheet

Current PartRFQ

43JR30E

OhmiteIn Stock: 109043JR30E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43JR30 are qualified based on the following critical parameters that must remain identical:

• Resistance value: 300 mOhms
• Tolerance: ±5%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial
• Temperature coefficient: ±90ppm/°C
• Physical dimensions: 0.220" Dia x 0.594" L (5.60mm x 15.10mm)
• Number of terminations: 2

The 43JR30E meets all these requirements and is classified as a parametric equivalent. The primary distinction between the main part and its substitute is packaging format and RoHS compliance status.

Parameter Comparison

Engineering Selection Recommendations

Both the 43JR30 and 43JR30E are electrically and mechanically identical, with all critical parameters matching across resistance, tolerance, power rating, composition, package type, and thermal characteristics. Selection between these parts should be based on the following factors:

The 43JR30E offers ROHS3 compliance, making it suitable for applications subject to RoHS regulations or customer requirements mandating compliant components. The 43JR30 remains available for applications without RoHS compliance requirements. Both parts are active products with adequate inventory levels. The 43JR30E is supplied in bulk packaging, while the 43JR30 uses standard packaging. Procurement decisions should align with supply chain requirements, regulatory obligations, and packaging specifications for the intended application.

Frequently Asked Questions (FAQ)

Q: Can the 43JR30E be used as a direct replacement for the 43JR30?

A: Yes. The 43JR30E is a parametric equivalent with identical electrical and mechanical specifications. All critical parameters including resistance value, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions are identical.

Q: What is the difference between the 43JR30 and 43JR30E?

A: The primary differences are packaging format (standard versus bulk) and RoHS compliance status. The 43JR30E is ROHS3 compliant, while the 43JR30 is RoHS non-compliant. All electrical and mechanical parameters are identical.

Q: Are there any dimensional differences between these parts?

A: No. Both parts share identical physical dimensions of 0.220" Dia x 0.594" L (5.60mm x 15.10mm) and are both axial package configuration, ensuring compatibility in PCB layouts and through-hole applications.

Q: Which part should I select for a new design?

A: Selection depends on regulatory and customer requirements. If RoHS compliance is mandated, specify the 43JR30E. If RoHS compliance is not required, either part is suitable. Both are active products with stable inventory.

Q: Do these parts have different thermal characteristics?

A: No. Both the 43JR30 and 43JR30E have identical temperature coefficients of ±90ppm/°C and identical 3W power ratings, ensuring equivalent thermal performance in circuit applications.