41FR20 Equivalent & Substitute Parts

Part Overview

The 41FR20 is a 200 mOhms ±1% 1W through-hole resistor in axial wirewound composition, manufactured by Ohmite as part of the Ohmicone® 40 series. This component is currently active in production. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design continuity when the primary part becomes unavailable or when alternative packaging or compliance requirements necessitate component substitution.

Substiute Parts

41FR20

OhmiteIn Stock: 76041FR20 Datasheet

Current PartRFQ

41FR20E

OhmiteIn Stock: 493341FR20E Datasheet

DirectRFQ

ALSR01R2000FE12

Vishay DaleIn Stock: 1410ALSR01R2000FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 41FR20 are qualified based on the following critical parameters that determine functional equivalence:

• Resistance value: 200 mOhms
• Tolerance: ±1%
• Power rating: 1W
• Composition: Wirewound
• Package configuration: Axial with 2 terminations
• Physical form factor: Through-hole

The substitute parts listed maintain these core electrical and mechanical specifications, ensuring direct functional compatibility in circuit applications. Variations in packaging format (bulk vs. standard), RoHS compliance status, and physical dimensions within acceptable tolerances do not affect substitutability for the specified electrical function.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain active production status and meet the core electrical specifications for 200 mOhms ±1% 1W axial wirewound resistor applications.

The 41FR20E is an Ohmite variant with identical electrical characteristics and physical dimensions to the 41FR20, with the distinction of ROHS3 compliance. This part is suitable for applications requiring RoHS-compliant components.

The ALSR01R2000FE12 from Vishay Dale is a functionally equivalent alternative with ROHS3 compliance and moisture-resistant construction. Physical dimensions are slightly smaller (0.110" Dia x 0.406" L versus 0.126" Dia x 0.437" L), which may be advantageous in space-constrained layouts. Operating temperature range is specified as -65°C ~ 250°C. This part is appropriate for applications requiring moisture resistance or extended temperature performance documentation.

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

Frequently Asked Questions (FAQ)

Q: Can the 41FR20E be used as a direct replacement for the 41FR20?

A: Yes. The 41FR20E maintains identical electrical specifications (200 mOhms ±1%, 1W, ±90ppm/°C) and physical dimensions. The primary difference is RoHS3 compliance status. Direct substitution is electrically and mechanically compatible.

Q: What is the difference between the 41FR20 and ALSR01R2000FE12?

A: Both parts meet the core electrical requirements of 200 mOhms ±1% 1W wirewound axial resistors. The ALSR01R2000FE12 features moisture-resistant construction, ROHS3 compliance, and a documented operating temperature range of -65°C ~ 250°C. Physical dimensions differ slightly: ALSR01R2000FE12 is 0.110" Dia x 0.406" L compared to 0.126" Dia x 0.437" L for the 41FR20.

Q: Are there any compatibility concerns with the smaller physical dimensions of the ALSR01R2000FE12?

A: The ALSR01R2000FE12 has a smaller diameter and length. Verify that the component footprint and lead spacing accommodate the smaller form factor in your specific PCB layout and mechanical assembly before substitution.

Q: Which substitute part should I select for RoHS-compliant applications?

A: Both 41FR20E and ALSR01R2000FE12 carry ROHS3 compliance certification. The 41FR20E maintains identical dimensions to the original 41FR20, while the ALSR01R2000FE12 offers additional moisture resistance and extended temperature documentation.

Q: What is the significance of the moisture-resistant feature on the ALSR01R2000FE12?

A: Moisture-resistant construction provides enhanced protection against humidity and environmental exposure. This feature is relevant for applications in high-humidity environments or where extended operational life under adverse conditions is required.