Ohmite 41F68R Equivalent & Substitute Parts

Part Overview

The Ohmite 41F68R is a 68 Ohm ±1% 1W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is currently active in production with 721 pieces in stock. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and accommodate different packaging or compliance requirements across manufacturing environments.

Substiute Parts

41F68R

OhmiteIn Stock: 78341F68R Datasheet

Current PartRFQ

41F68RE

OhmiteIn Stock: 103641F68RE Datasheet

DirectRFQ

RS01A68R00FS70

Vishay DaleIn Stock: 1743RS01A68R00FS70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 41F68R is determined by matching the following critical parameters:

• Resistance value: 68 Ohms
• Tolerance: ±1%
• Power rating: 1W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Termination count: 2

All substitute parts listed meet these core electrical and mechanical specifications, ensuring functional equivalence in circuit applications. Differences in physical dimensions, operating temperature ranges, packaging formats, and compliance certifications are noted but do not affect electrical substitutability within the specified parameters.

Parameter Comparison

Engineering Selection Recommendations

41F68RE (Ohmite): This direct Ohmite substitute is electrically identical to the 41F68R with matching physical dimensions and identical temperature coefficient. The 41F68RE offers RoHS compliance and an extended operating temperature range (-55°C ~ 275°C), making it suitable for applications requiring regulatory compliance. Bulk packaging is available.

RS01A68R00FS70 (Vishay Dale): This Vishay Dale RS series resistor meets all core electrical specifications and adds moisture-resistant construction. The operating temperature range is -65°C ~ 250°C. Physical dimensions are slightly smaller (0.094" Dia x 0.406" L versus 0.126" Dia x 0.437" L), which may affect PCB layout compatibility. Cut tape packaging is available. This part is not RoHS compliant.

Selection between substitutes should be based on compliance requirements, available packaging formats, physical space constraints on the PCB, and operating temperature requirements of the specific application.

Frequently Asked Questions (FAQ)

Q: Can the 41F68RE be used as a direct replacement for the 41F68R?

A: Yes. Both parts share identical electrical specifications (68 Ohms ±1%, 1W, ±20ppm/°C) and physical dimensions (0.126" Dia x 0.437" L). The primary difference is RoHS compliance status and operating temperature range. The 41F68RE is suitable for applications requiring RoHS compliance.

Q: What are the physical dimension differences between the Ohmite and Vishay Dale parts?

A: The Ohmite 41F68R and 41F68RE measure 0.126" Dia x 0.437" L (3.20mm x 11.10mm). The Vishay Dale RS01A68R00FS70 measures 0.094" Dia x 0.406" L (2.39mm x 10.31mm). The Vishay part is smaller in both diameter and length, which may require PCB layout verification before substitution.

Q: Are all three parts electrically equivalent?

A: Yes. All three parts meet the core substitution criteria: 68 Ohms ±1%, 1W power rating, wirewound composition, axial package, and ±20ppm/°C temperature coefficient. Differences in operating temperature ranges, compliance certifications, and physical dimensions do not affect electrical equivalence.

Q: What packaging options are available for these substitutes?

A: The Ohmite 41F68R and 41F68RE are available in bulk packaging. The Vishay Dale RS01A68R00FS70 is available in cut tape (CT) format. Packaging selection depends on manufacturing process requirements and inventory management practices.

Q: Which substitute should I choose for a RoHS-compliant design?

A: The Ohmite 41F68RE is RoHS compliant. Both the original 41F68R and the Vishay Dale RS01A68R00FS70 are RoHS non-compliant. If RoHS compliance is required, the 41F68RE is the appropriate choice.