Ohmite 41JR20E Equivalent & Substitute Parts

Part Overview

The Ohmite 41JR20E is a 1W wirewound axial resistor with a resistance value of 200 mOhms (0.2 Ohms) and a tolerance of ±5%. This component is designed for through-hole applications requiring precision current-sensing or low-resistance load applications. The part is currently in active production status with RoHS compliance and operates across a wide temperature range from -55°C to 275°C. Substitute parts are identified to provide alternatives with improved tolerance specifications or enhanced compliance certifications while maintaining identical electrical and mechanical compatibility.

Substiute Parts

41JR20E

OhmiteIn Stock: 117541JR20E Datasheet

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41FR20E

OhmiteIn Stock: 493341FR20E Datasheet

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Key Parameters

Substitute Part Grouping Explanation

The Ohmite 41FR20E qualifies as a direct substitute for the 41JR20E based on the following criteria:

Identical Parameters:

• Resistance value: 200 mOhms
• Power rating: 1W
• Composition: Wirewound
• Package type: Axial
• Physical dimensions: 0.126" Dia x 0.437" L (3.20mm x 11.10mm)
• Temperature coefficient: ±90ppm/°C
• Number of terminations: 2
• Series: Ohmicone® 40

Improved Specification:

• Tolerance: ±1% (versus ±5% on the main part)

The 41FR20E provides superior tolerance performance while maintaining all other electrical and mechanical characteristics, making it suitable for applications requiring tighter resistance accuracy.

Parameter Comparison

Engineering Selection Recommendations

Both the 41JR20E and 41FR20E are active production components from Ohmite's Ohmicone® 40 series. The 41JR20E is suitable for applications where ±5% tolerance meets circuit requirements. The 41FR20E offers improved tolerance at ±1%, providing enhanced accuracy for precision current-sensing circuits or applications with tighter resistance specifications. Both parts maintain identical physical dimensions, power ratings, and thermal characteristics, ensuring direct mechanical and electrical compatibility in axial through-hole PCB layouts. The 41FR20E carries ROHS3 compliance, representing the latest RoHS certification standard.

Frequently Asked Questions (FAQ)

Q: Can the 41FR20E directly replace the 41JR20E in existing designs?

A: Yes. Both parts share identical resistance values, power ratings, physical dimensions, and package types. The 41FR20E provides superior tolerance performance without requiring any circuit modifications or PCB layout changes.

Q: What is the primary difference between these two parts?

A: The tolerance specification differs. The 41JR20E has ±5% tolerance, while the 41FR20E has ±1% tolerance. All other electrical and mechanical parameters remain identical.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.126" diameter by 0.437" length (3.20mm x 11.10mm) and use the same axial package configuration.

Q: Do both parts operate across the same temperature range?

A: Both parts share the same temperature coefficient of ±90ppm/°C. The 41JR20E specifies an operating range of -55°C to 275°C. The 41FR20E does not specify an operating temperature range in the provided data.

Q: What compliance certifications apply to each part?

A: The 41JR20E is RoHS Compliant. The 41FR20E is ROHS3 Compliant and REACH Unaffected.

Q: Which part should be selected for new designs?

A: Selection depends on tolerance requirements. For applications requiring ±1% accuracy, the 41FR20E is the appropriate choice. For applications where ±5% tolerance is acceptable, either part is suitable based on availability and compliance requirements.