41FR75 Equivalent & Substitute Parts Reference

Part Overview

The 41FR75 is a 750 mOhms ±1% 1W axial wirewound resistor manufactured by Ohmite as part of the Ohmicone® 40 series. This component is an active product with 1102 units currently in stock. The part is designed for through-hole applications requiring precision current-sensing or low-resistance load applications in industrial and electronic equipment. Substitute parts may be required due to supply chain constraints, regional availability, or specific application requirements for enhanced features such as moisture resistance.

Substiute Parts

41FR75

OhmiteIn Stock: 118541FR75 Datasheet

Current PartRFQ

RS01AR7500FS70

Vishay DaleIn Stock: 1793RS01AR7500FS70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 41FR75 is based on the following critical parameters that must remain constant:

• Resistance Value: 750 mOhms (exact match required)
• Tolerance: ±1% (precision specification)
• Power Rating: 1W (thermal and current handling capability)
• Composition: Wirewound (construction method affecting performance characteristics)
• Package Type: Axial (physical form factor and termination style)
• Temperature Coefficient: ±90ppm/°C (temperature stability requirement)

The RS01AR7500FS70 manufactured by Vishay Dale meets all these critical parameters and qualifies as a direct substitute. This part maintains identical electrical specifications while offering enhanced moisture resistance as an additional feature.

Parameter Comparison

Engineering Selection Recommendations

Both the 41FR75 and RS01AR7500FS70 are active products with confirmed inventory availability. Selection between these parts should be based on the following criteria:

41FR75 (Ohmite): Select this part when the original specification is required or when standard wirewound performance is sufficient for the application. This part maintains the original design intent and is suitable for controlled indoor environments.

RS01AR7500FS70 (Vishay Dale): Select this substitute when moisture resistance is beneficial to the application environment or when extended operating temperature range (-65°C ~ 250°C) is required. This part provides equivalent electrical performance with enhanced environmental protection.

Both parts carry identical RoHS non-compliant status and are subject to the same regulatory classifications (ECCN: EAR99; HTSUS: 8533.21.0080).

Frequently Asked Questions (FAQ)

Q: Can RS01AR7500FS70 be used as a direct replacement for 41FR75 in existing designs?

A: Yes. Both parts share identical resistance (750 mOhms), tolerance (±1%), power rating (1W), composition (wirewound), temperature coefficient (±90ppm/°C), and axial package configuration. The RS01AR7500FS70 is electrically and mechanically compatible.

Q: What is the difference between these two parts?

A: The primary differences are manufacturer (Ohmite vs. Vishay Dale), physical dimensions (0.126" Dia x 0.437" L vs. 0.094" Dia x 0.406" L), packaging format (bulk vs. cut tape), and features (standard vs. moisture resistant). Electrical specifications remain identical.

Q: Are there any compliance differences between these parts?

A: Both parts are RoHS non-compliant and carry the same ECCN and HTSUS classifications. The RS01AR7500FS70 is REACH Affected, while the 41FR75 is REACH Unaffected. Verify compliance requirements for your specific application and region.

Q: Does the smaller physical size of RS01AR7500FS70 affect PCB layout?

A: The RS01AR7500FS70 has a smaller diameter (0.094" vs. 0.126") and slightly shorter length (0.406" vs. 0.437"). Verify that your PCB layout and mechanical clearances accommodate these dimensional differences before substitution.

Q: Which part should be selected for high-humidity or outdoor applications?

A: The RS01AR7500FS70 includes moisture-resistant features, making it the appropriate choice for applications exposed to humidity or moisture. The 41FR75 is suitable for standard indoor controlled environments.