Ohmite 85FR75 Equivalent & Substitute Parts

Part Overview

The Ohmite 85FR75 is a 750 mOhms ±1% 5W through-hole resistor with axial wirewound construction, part of the Acrasil® 80 series. This component is currently active in production and maintains 1049 units in new original stock. Finding equivalent and substitute parts may be necessary due to supply chain considerations, packaging preferences, or specific compliance requirements for your application.

Substiute Parts

85FR75

OhmiteIn Stock: 113785FR75 Datasheet

Current PartRFQ

45FR75E

OhmiteIn Stock: 123345FR75E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 45FR75E qualifies as a parametric equivalent to the 85FR75 based on the following critical electrical and mechanical parameters:

• Resistance Value: Both parts specify 750 mOhms
• Tolerance: Both maintain ±1% tolerance
• Power Rating: Both are rated for 5W dissipation
• Composition: Both utilize wirewound construction
• Package Configuration: Both employ axial through-hole packaging
• Temperature Coefficient: Both exhibit ±90ppm/°C performance
• Physical Dimensions: Both measure 0.343" Dia x 0.937" L (8.70mm x 23.80mm)
• Termination Count: Both feature 2 terminations

These matching parameters establish functional and mechanical interchangeability for circuit applications requiring this specific resistance value and power handling capability.

Parameter Comparison

Engineering Selection Recommendations

Both the 85FR75 and 45FR75E are active production components from Ohmite with identical electrical and mechanical specifications. Selection between these parts should be based on compliance and certification requirements specific to your application.

The 45FR75E offers RoHS compliance, making it suitable for applications subject to RoHS directives or customer specifications requiring RoHS-compliant components. The 85FR75 is RoHS non-compliant and should be selected only when RoHS compliance is not a requirement.

Both parts maintain equivalent performance across all critical electrical parameters and physical dimensions, ensuring direct substitution capability in circuit designs.

Frequently Asked Questions (FAQ)

Q: Can the 45FR75E directly replace the 85FR75 in my circuit?

A: Yes. Both parts share identical resistance value (750 mOhms), tolerance (±1%), power rating (5W), temperature coefficient (±90ppm/°C), and physical dimensions (0.343" Dia x 0.937" L). They are functionally and mechanically interchangeable.

Q: What is the primary difference between these two parts?

A: The 45FR75E is RoHS compliant, while the 85FR75 is RoHS non-compliant. Both belong to different Ohmite series (40 versus Acrasil® 80) but maintain identical electrical and mechanical performance.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.343" Dia x 0.937" L (8.70mm x 23.80mm) and use axial through-hole packaging, ensuring identical PCB footprint and mounting compatibility.

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

A: Selection depends on your compliance requirements. If RoHS compliance is mandatory, select the 45FR75E. If RoHS compliance is not required, either part is suitable based on availability and supply chain considerations.

Q: Do these parts have different operating temperature ranges?

A: The 45FR75E specifies an operating temperature range of -55°C ~ 275°C. The 85FR75 does not provide an operating temperature specification in the available data. Both maintain the same temperature coefficient of ±90ppm/°C.