41F50R Equivalent & Substitute Parts

Part Overview

The 41F50R is an Ohmite Ohmicone® 40 series through-hole axial wirewound resistor rated at 50 Ohms ±1% tolerance with 1W power dissipation capacity. This component is classified as Active product status and is currently in stock with 769 units available. Equivalent and substitute parts are identified to provide procurement flexibility, support supply chain continuity, and accommodate specific application requirements such as RoHS compliance or enhanced environmental specifications.

Substiute Parts

41F50R

OhmiteIn Stock: 86041F50R Datasheet

Current PartRFQ

41F50RE

OhmiteIn Stock: 121741F50RE Datasheet

DirectRFQ

ALSR0150R00FE12

Vishay DaleIn Stock: 1261ALSR0150R00FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 41F50R is determined by the following critical parameters:

• Resistance value: 50 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 1W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Number of terminations: 2 (exact match required)

The identified substitute parts meet all mandatory electrical and mechanical parameters. Secondary parameters including temperature coefficient, operating temperature range, and RoHS compliance status are provided for application-specific evaluation but do not disqualify substitution based on core functional requirements.

Parameter Comparison

Engineering Selection Recommendations

All three parts—41F50R, 41F50RE, and ALSR0150R00FE12—satisfy the core electrical and mechanical requirements for 50 Ohm ±1% 1W axial wirewound resistor applications.

The 41F50RE is an Ohmite product within the same Ohmicone® 40 series as the main part, with identical electrical specifications and physical dimensions. The primary distinction is RoHS3 compliance and bulk packaging availability.

The ALSR0150R00FE12 is a Vishay Dale alternative that meets all functional requirements. Physical dimensions are slightly smaller (0.110" Dia x 0.406" L versus 0.126" Dia x 0.437" L), and the temperature coefficient is ±30ppm/°C compared to ±20ppm/°C for the Ohmite parts. This part includes moisture-resistant construction and RoHS3 compliance. Operating temperature range is specified as -65°C to 250°C.

Selection between these parts should be based on procurement availability, RoHS compliance requirements for the end application, and physical space constraints within the assembly.

Frequently Asked Questions (FAQ)

Q: Can the 41F50RE be used as a direct replacement for the 41F50R?

A: Yes. Both parts are Ohmite Ohmicone® 40 series components with identical resistance (50 Ohms), tolerance (±1%), power rating (1W), composition (wirewound), package type (axial), and physical dimensions (0.126" Dia x 0.437" L). The primary difference is RoHS3 compliance status and packaging format.

Q: What are the physical dimension differences between the ALSR0150R00FE12 and the 41F50R?

A: The ALSR0150R00FE12 has a smaller diameter (0.110" versus 0.126") and shorter length (0.406" versus 0.437"). These dimensional differences must be evaluated against available PCB space and mounting constraints in the target application.

Q: Does the higher temperature coefficient of the ALSR0150R00FE12 affect substitution suitability?

A: The ALSR0150R00FE12 has a temperature coefficient of ±30ppm/°C compared to ±20ppm/°C for the Ohmite parts. This parameter difference does not disqualify substitution but must be considered if the application requires tight resistance stability across temperature ranges.

Q: Are all three parts suitable for RoHS-compliant applications?

A: The 41F50R is RoHS non-compliant. The 41F50RE and ALSR0150R00FE12 are both ROHS3 compliant and suitable for applications requiring RoHS compliance.

Q: What is the moisture-resistant feature on the ALSR0150R00FE12?

A: The ALSR0150R00FE12 includes moisture-resistant construction as a design feature. This specification is provided for reference; substitution suitability is not dependent on this feature unless explicitly required by the application.