Equivalent & Substitute Parts for Ohmite 85FR10

Part Overview

The Ohmite 85FR10 is a 100 mOhms ±1% 5W through-hole resistor with axial wirewound construction, part of the Acrasil® 80 series. This component is currently active in production and available in box packaging with 791 pieces in stock. Finding equivalent or substitute parts may be necessary due to packaging preferences, supply chain considerations, or compliance requirements specific to end-use applications.

Substiute Parts

85FR10

OhmiteIn Stock: 82285FR10 Datasheet

Current PartRFQ

45FR10E

OhmiteIn Stock: 588445FR10E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 85FR10 is determined by strict equivalence across the following parameters:

• Electrical Specifications: Resistance value (100 mOhms), tolerance (±1%), and power rating (5W) must be identical
• Construction Type: Wirewound composition required
• Package Configuration: Axial through-hole package with matching physical dimensions (0.343" Dia × 0.937" L)
• Thermal Performance: Temperature coefficient of ±90 ppm/°C
• Termination Count: Two-terminal configuration

The Ohmite 45FR10E meets all these criteria and qualifies as a parametric equivalent. The primary distinction between these parts is series designation (Acrasil® 80 versus Ohmicone® 40) and packaging format (box versus bulk), along with differing compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the 85FR10 and 45FR10E are active production components manufactured by Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on the following factors:

85FR10 (Acrasil® 80 Series)

• Suitable for applications where RoHS non-compliant components are acceptable
• Box packaging format appropriate for smaller quantity requirements
• Current inventory: 791 pieces

45FR10E (Ohmicone® 40 Series)

• ROHS3 compliant and REACH unaffected, suitable for regulated applications requiring environmental compliance
• Bulk packaging format appropriate for high-volume production runs
• Significantly higher inventory availability: 5823 pieces
• Recommended for new designs or applications with compliance mandates

Both parts share identical electrical performance, thermal characteristics, and physical form factor, ensuring direct functional interchangeability in circuit applications.

Frequently Asked Questions (FAQ)

Q: Can the 45FR10E directly replace the 85FR10 in existing designs? A: Yes. Both parts are electrically and mechanically identical with matching resistance (100 mOhms ±1%), power rating (5W), temperature coefficient (±90 ppm/°C), and physical dimensions (0.343" Dia × 0.937" L). The primary differences are series designation, packaging format, and compliance certifications.

Q: What is the difference between Acrasil® 80 and Ohmicone® 40 series? A: These are distinct product series from Ohmite with different manufacturing processes and compliance profiles. The 85FR10 belongs to the Acrasil® 80 series (RoHS non-compliant), while the 45FR10E belongs to the Ohmicone® 40 series (ROHS3 compliant). Electrical and mechanical specifications are equivalent.

Q: Does packaging format affect electrical performance? A: No. Box and bulk packaging formats are distribution methods only and do not affect component electrical characteristics, thermal performance, or reliability. Selection should be based on procurement quantity requirements and supply chain logistics.

Q: Are there compliance considerations when substituting these parts? A: Yes. The 85FR10 is RoHS non-compliant, while the 45FR10E is ROHS3 compliant and REACH unaffected. Applications subject to environmental regulations or customer compliance requirements should specify the 45FR10E.

Q: What is the Moisture Sensitivity Level (MSL) difference? A: The 85FR10 has MSL 1 (Unlimited), indicating no moisture sensitivity restrictions. The 45FR10E lists MSL as Not Applicable, which is consistent with wirewound resistor construction. Both parts are suitable for standard storage and handling conditions.

Q: Which part should be selected for new designs? A: For new designs without specific legacy constraints, the 45FR10E is recommended due to ROHS3 compliance, REACH compliance status, and significantly higher inventory availability (5823 pieces versus 791 pieces).