Equivalent & Substitute Parts for 85F1R5

Part Overview

The 85F1R5 is a 5W, 1.5 Ohms wirewound axial resistor manufactured by Ohmite, part of the Acrasil® 80 series. This component is designed for through-hole applications requiring precision resistive elements with ±1% tolerance and stable performance across operating conditions. The part is currently active in production with 1,013 units in stock. Alternative equivalent parts may be required due to packaging preferences, supply chain considerations, or specific compliance requirements for end applications.

Substiute Parts

85F1R5

OhmiteIn Stock: 111785F1R5 Datasheet

Current PartRFQ

45F1R5E

OhmiteIn Stock: 99645F1R5E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 85F1R5 is determined by strict equivalence across the following critical parameters:

• Resistance value: 1.5 Ohms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±50ppm/°C
• Physical dimensions: 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Number of terminations: 2

The 45F1R5E meets all electrical and mechanical substitution criteria. Differences exist only in packaging format (bulk versus box) and compliance certifications, which do not affect functional interchangeability in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 85F1R5 and 45F1R5E are functionally equivalent for circuit applications requiring 1.5 Ohms ±1% at 5W with axial through-hole configuration. Selection between these parts should be based on the following factors:

The 85F1R5 (Acrasil® 80 series) is suitable for applications where RoHS non-compliance is acceptable and box packaging is preferred for component organization and traceability.

The 45F1R5E (Ohmicone® 40 series) is the appropriate choice for applications requiring ROHS3 compliance. This substitute maintains identical electrical performance and physical form factor while meeting modern regulatory requirements for hazardous substance restrictions.

Both parts carry the same ECCN (EAR99) and HTSUS (8533.21.0080) classifications, confirming equivalent trade and export status.

Frequently Asked Questions (FAQ)

Q: Can the 45F1R5E be used as a direct replacement for the 85F1R5 in existing designs?

A: Yes. The 45F1R5E is electrically and mechanically equivalent to the 85F1R5. Both components have identical resistance (1.5 Ohms), tolerance (±1%), power rating (5W), temperature coefficient (±50ppm/°C), and axial through-hole package dimensions (0.343" Dia x 0.937" L). No circuit modifications are required.

Q: What is the difference between box and bulk packaging?

A: Box packaging (85F1R5) provides individual component containment suitable for smaller orders and applications requiring component-level traceability. Bulk packaging (45F1R5E) is used for higher-volume procurement and manufacturing environments where components are managed in larger quantities.

Q: Why does the 45F1R5E have ROHS3 compliance while the 85F1R5 does not?

A: The 45F1R5E is manufactured to meet ROHS3 (Restriction of Hazardous Substances Directive 3) standards, which restrict the use of specific hazardous materials in electrical and electronic equipment. The 85F1R5 predates or does not meet these compliance requirements. For applications subject to RoHS regulations, the 45F1R5E is the required selection.

Q: Are the physical dimensions identical between these two parts?

A: Yes. Both the 85F1R5 and 45F1R5E have identical axial dimensions of 0.343" diameter by 0.937" length (8.70mm x 23.80mm). They are mechanically interchangeable in PCB layouts and through-hole mounting applications.

Q: What does the temperature coefficient ±50ppm/°C indicate?

A: The temperature coefficient specifies the maximum change in resistance value per degree Celsius of temperature change. A ±50ppm/°C rating means the resistance will vary by no more than 50 parts per million for each degree of temperature variation, ensuring stable performance across the operating temperature range.