Ohmite 55JR10E Equivalent & Substitute Parts

Part Overview

The Ohmite 55JR10E is a 100 mOhms ±5% 5W through-hole resistor with axial wirewound composition. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when inventory constraints, lead time requirements, or supply chain disruptions necessitate alternative sourcing while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

55JR10E

OhmiteIn Stock: 76555JR10E Datasheet

Current PartRFQ

45JR10E

OhmiteIn Stock: 124845JR10E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 55JR10E is determined by strict equivalence across the following critical parameters:

• Resistance value: 100 mOhms
• Tolerance: ±5%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial with 2 terminations
• Temperature coefficient: ±90 ppm/°C

The Ohmite 45JR10E qualifies as a direct substitute based on identical electrical specifications (resistance, tolerance, power, composition, and temperature coefficient) and compatible axial package configuration. Both components maintain the same functional performance within circuit applications requiring these parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 55JR10E and 45JR10E are Active product status components from Ohmite with full RoHS compliance certifications. The 45JR10E provides equivalent electrical performance with identical resistance, tolerance, power rating, and temperature coefficient specifications. Physical dimensions differ slightly (45JR10E is marginally larger in diameter and length), which must be evaluated against available PCB layout space and mounting constraints in the target application. Both components carry EAR99 ECCN classification. Selection between these parts should be based on inventory availability, lead time requirements, and mechanical fit within the specific circuit board design.

Frequently Asked Questions (FAQ)

Q: Can the 45JR10E directly replace the 55JR10E in all applications?

A: The 45JR10E provides electrical equivalence across all critical parameters (resistance, tolerance, power rating, temperature coefficient, and composition). However, the slightly larger physical dimensions (0.343" Dia x 0.937" L versus 0.315" Dia x 0.827" L) require verification of available mounting space on the PCB. Mechanical fit must be confirmed before substitution.

Q: Are there differences in compliance or regulatory status between these parts?

A: Both components are Active status and RoHS compliant. The 55JR10E carries RoHS3 Compliant designation with REACH Unaffected status. The 45JR10E is RoHS Compliant with Vendor Undefined REACH status. Applications requiring specific REACH compliance documentation should reference the respective manufacturer datasheets.

Q: What determines substitution eligibility for wirewound axial resistors?

A: Substitution is based on matching resistance value, tolerance, power rating, composition type, package configuration, and temperature coefficient. These parameters ensure functional equivalence in circuit operation. Physical dimensions are secondary considerations evaluated against PCB layout constraints.

Q: Is the temperature coefficient identical between these parts?

A: Yes, both the 55JR10E and 45JR10E specify ±90 ppm/°C temperature coefficient, ensuring equivalent thermal performance across the operating temperature range.