Ohmite 81FR10 Equivalent & Substitute Parts

Part Overview

The Ohmite 81FR10 is a 100 mOhms ±1% 1W through-hole resistor with axial wirewound construction, part of the Acrasil® 80 series. This component is currently active in production with 1131 pieces in stock. Finding equivalent substitute parts may be necessary due to supply chain considerations, packaging preferences, or compliance requirements specific to your application.

Substiute Parts

81FR10

OhmiteIn Stock: 123781FR10 Datasheet

Current PartRFQ

41FR10E

OhmiteIn Stock: 103941FR10E Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 81FR10 are qualified based on matching the following critical electrical and mechanical parameters:

• Resistance value: 100 mOhms
• Tolerance: ±1%
• Power rating: 1W
• Composition: Wirewound
• Package configuration: Axial with 2 terminations
• Temperature coefficient: ±90ppm/°C
• Physical dimensions: 0.126" Dia x 0.437" L (3.20mm x 11.10mm)

The 41FR10E meets all these criteria and qualifies as a parametric equivalent. Both parts share identical electrical specifications and physical form factors, differing only in series designation (Ohmicone® 40 versus Acrasil® 80) and packaging format.

Parameter Comparison

Engineering Selection Recommendations

Both the 81FR10 and 41FR10E are functionally equivalent for applications requiring a 100 mOhms ±1% 1W axial wirewound resistor. Selection between these parts should be based on the following factors:

RoHS Compliance: The 41FR10E is ROHS3 compliant, while the 81FR10 is RoHS non-compliant. Applications subject to RoHS regulations must use the 41FR10E.

Product Status: Both parts are active in production and available in stock quantities suitable for production use.

Packaging Requirements: The 81FR10 is supplied in standard packaging, while the 41FR10E is supplied in bulk packaging. Packaging selection depends on your procurement and assembly workflow requirements.

Series Designation: The parts belong to different Ohmite series (Acrasil® 80 and Ohmicone® 40). Both series are manufactured by Ohmite and meet identical electrical specifications for this resistance value and power rating.

Frequently Asked Questions (FAQ)

Q: Can the 41FR10E be used as a direct replacement for the 81FR10?

A: Yes. Both parts have identical electrical specifications (100 mOhms ±1%, 1W, ±90ppm/°C) and physical dimensions (0.126" Dia x 0.437" L). They are pin-compatible axial wirewound resistors with 2 terminations.

Q: What is the difference between the Acrasil® 80 and Ohmicone® 40 series?

A: Both are Ohmite wirewound resistor series. For the 100 mOhms 1W specification, they provide identical electrical performance and physical form factors. Series designation reflects internal Ohmite product categorization but does not affect functional equivalence for this resistance value.

Q: Does RoHS compliance affect electrical performance?

A: No. RoHS compliance relates to material composition and environmental regulations, not electrical characteristics. Both parts deliver the same 100 mOhms ±1% resistance and 1W power rating.

Q: Are there packaging differences I should consider?

A: The 81FR10 uses standard packaging while the 41FR10E uses bulk packaging. This affects order quantities and handling but not component performance or compatibility.

Q: Can I mix these parts in the same assembly?

A: Yes. Since both parts are electrically and mechanically identical, they can be used interchangeably in the same circuit design and PCB layout.