Ohmite 45J5R0E Equivalent & Substitute Parts

Part Overview

The Ohmite 45J5R0E is a 5 Ohm ±5% 5W through hole resistor with axial wirewound composition, part of the Ohmicone® 40 series. This component is Active status and ROHS3 compliant. Equivalent and substitute parts are identified when component availability is limited, supply chain disruptions occur, or design specifications allow for alternative electrical and mechanical parameters within defined tolerances.

Substiute Parts

45J5R0E

OhmiteIn Stock: 94245J5R0E Datasheet

Current PartRFQ

45F5R0E

OhmiteIn Stock: 111145F5R0E Datasheet

UpgradeRFQ

55J5R0E

OhmiteIn Stock: 382455J5R0E Datasheet

MFR RecommendedRFQ

ALSR055R000JE12

Vishay DaleIn Stock: 2122ALSR055R000JE12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 45J5R0E are grouped based on the following critical parameters that determine functional equivalence:

Primary Substitution Criteria:

• Resistance value: 5 Ohms (exact match required)
• Power rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial (exact match required)
• Temperature coefficient: ±50ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (minimum requirement)

Allowable Variations:

• Tolerance: ±5% or tighter (±1% acceptable as upgrade)
• Physical dimensions: Minor variations permitted within axial package specifications
• Manufacturer: Different manufacturers acceptable if all electrical parameters match
• Series designation: May differ between manufacturers

Parameter Comparison

Engineering Selection Recommendations

45F5R0E (Ohmite Upgrade Option): This part is an upgrade substitute with identical electrical specifications to the 45J5R0E except for improved tolerance (±1% versus ±5%). It maintains the same physical dimensions, power rating, composition, and temperature coefficient. Both parts are Active status and ROHS3 compliant. Selection of 45F5R0E is appropriate when tighter tolerance specifications are required or when 45J5R0E availability is constrained.

55J5R0E (Ohmite MFR Recommended): This part is functionally equivalent with matching electrical parameters (5 Ohms ±5%, 5W, ±50ppm/°C). Physical dimensions are slightly smaller (0.315" Dia x 0.827" L versus 0.343" Dia x 0.937" L). Both are Ohmite products, Active status, and ROHS3 compliant. PCB layout accommodation for the reduced size must be confirmed before selection.

ALSR055R000JE12 (Vishay Dale MFR Recommended): This part is functionally equivalent with matching electrical parameters (5 Ohms ±5%, 5W, ±50ppm/°C). It includes moisture-resistant features and operates across -65°C to 250°C temperature range. Physical dimensions are comparable (0.312" Dia x 0.875" L). Both are Active status and ROHS3 compliant. This option is suitable for applications requiring extended operating temperature range or moisture resistance.

Frequently Asked Questions (FAQ)

Q: Can 45F5R0E replace 45J5R0E in all applications? A: Yes. The 45F5R0E maintains identical electrical specifications except for improved tolerance (±1% versus ±5%). Physical dimensions and all other parameters are identical. Applications requiring ±5% tolerance or better can use this substitute.

Q: What are the physical dimension differences between substitute parts? A: The 45J5R0E and 45F5R0E are identical at 0.343" Dia x 0.937" L. The 55J5R0E is smaller at 0.315" Dia x 0.827" L. The ALSR055R000JE12 is 0.312" Dia x 0.875" L. PCB layout must accommodate these variations.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts (45F5R0E, 55J5R0E, ALSR055R000JE12) are ROHS3 compliant, matching the compliance status of the 45J5R0E.

Q: What is the difference between Ohmite and Vishay Dale options? A: Both manufacturers provide functionally equivalent 5 Ohm 5W axial wirewound resistors. The Vishay Dale ALSR055R000JE12 includes moisture-resistant features and extended operating temperature range (-65°C to 250°C). Ohmite options (45J5R0E, 45F5R0E, 55J5R0E) are standard wirewound resistors.

Q: Can physical dimension differences affect circuit board assembly? A: Yes. Dimension variations between substitute parts may require PCB layout verification. The 55J5R0E is notably smaller. Confirm hole spacing, component clearance, and thermal management requirements before substitution.

Q: Are all parts rated for the same power dissipation? A: Yes. All listed parts are rated at 5W power dissipation with ±50ppm/°C temperature coefficient, ensuring equivalent thermal performance.