Equivalent & Substitute Parts for Ohmite 41F2K0

Part Overview

The Ohmite 41F2K0 is a 2 kOhms ±1% 1W through-hole resistor with axial wirewound construction, part of the Ohmicone® 40 series. This component is classified as Active product status with 835 units in current inventory. Substitute parts are identified when original stock becomes unavailable, when alternative packaging formats are required, or when compliance certifications differ from the primary specification.

Substiute Parts

41F2K0

OhmiteIn Stock: 93041F2K0 Datasheet

Current PartRFQ

41F2K0E

OhmiteIn Stock: 95341F2K0E Datasheet

DirectRFQ

ALSR012K000FE12

Vishay DaleIn Stock: 859ALSR012K000FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 41F2K0 is determined by the following critical parameters:

• Resistance Value: Must be 2 kOhms
• Tolerance: Must be ±1%
• Power Rating: Must be 1W
• Composition: Must be Wirewound
• Package Type: Must be Axial with 2 terminations
• Physical Dimensions: Axial package format with compatible lead spacing

The identified substitute parts meet all mandatory electrical and mechanical parameters. Variations in temperature coefficient, RoHS compliance status, and physical dimensions (within axial package constraints) do not preclude substitution when the core electrical specifications are matched.

Parameter Comparison

Engineering Selection Recommendations

41F2K0E (Ohmite): This part is a direct manufacturer equivalent with identical electrical specifications and physical dimensions to the primary 41F2K0. The primary distinction is packaging format (Bulk versus standard) and RoHS3 compliance certification. Selection of 41F2K0E is appropriate when RoHS3 compliance is required or when bulk packaging aligns with procurement requirements.

ALSR012K000FE12 (Vishay Dale): This substitute meets all core electrical parameters with equivalent resistance, tolerance, and power rating. The ALSR series provides moisture-resistant construction and RoHS3 compliance. Physical dimensions are slightly smaller (0.110" diameter versus 0.126"), which may affect board layout considerations. The temperature coefficient specification is ±30ppm/°C compared to ±20ppm/°C for the Ohmite parts. This part is suitable for applications requiring moisture resistance or when space constraints favor the smaller axial package.

Frequently Asked Questions (FAQ)

Q: Can the 41F2K0E be used as a direct replacement for the 41F2K0?

A: Yes. The 41F2K0E shares identical electrical specifications (2 kOhms, ±1%, 1W) and physical dimensions (0.126" Dia x 0.437" L). The primary difference is packaging format and RoHS3 compliance status. No circuit modifications are required.

Q: What is the key difference between the Ohmite 41F2K0 and the Vishay Dale ALSR012K000FE12?

A: Both parts meet the core electrical requirements (2 kOhms, ±1%, 1W wirewound axial resistor). The ALSR012K000FE12 features moisture-resistant construction, a slightly smaller physical diameter (0.110" versus 0.126"), and a temperature coefficient of ±30ppm/°C versus ±20ppm/°C. Physical dimensions must be verified against board layout constraints before selection.

Q: Are there RoHS compliance differences between these parts?

A: Yes. The primary 41F2K0 is RoHS non-compliant. Both substitute parts (41F2K0E and ALSR012K000FE12) are ROHS3 compliant. Selection should reflect project compliance requirements.

Q: Does the smaller physical size of the ALSR012K000FE12 affect circuit performance?

A: Physical size does not affect electrical performance. However, the smaller axial diameter (0.110" versus 0.126") and length (0.406" versus 0.437") must be verified against PCB layout and component spacing requirements before substitution.

Q: What is the significance of the temperature coefficient difference?

A: The 41F2K0 and 41F2K0E specify ±20ppm/°C, while the ALSR012K000FE12 specifies ±30ppm/°C. This indicates the rate of resistance change across the operating temperature range. Applications requiring tighter temperature stability should prioritize the ±20ppm/°C specification.