Ohmite 41F220 Equivalent & Substitute Parts

Part Overview

The Ohmite 41F220 is a 220 Ohm ±1% 1W through-hole axial wirewound resistor from the Ohmicone® 40 series. This component is designed for applications requiring precision resistance with moderate power dissipation in a compact axial package. The part maintains active product status with 1051 units in current inventory. Substitute parts are identified when original stock becomes unavailable or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications.

Substiute Parts

41F220

OhmiteIn Stock: 109841F220 Datasheet

Current PartRFQ

ALSR01220R0FE12

Vishay DaleIn Stock: 958ALSR01220R0FE12 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Ohmite 41F220 is determined by the following critical parameters:

• Resistance Value: Must be 220 Ohms
• Tolerance: Must be ±1% or tighter
• Power Rating: Must be 1W or greater
• Composition: Must be wirewound
• Package: Must be axial with 2 terminations
• Form Factor: Physical dimensions must accommodate standard through-hole PCB mounting

The Vishay Dale ALSR01220R0FE12 meets all substitution criteria. Both parts share identical resistance, tolerance, power rating, composition, and package configuration. Dimensional variations (0.110" Dia x 0.406" L versus 0.126" Dia x 0.437" L) remain within acceptable tolerances for standard axial component footprints.

Parameter Comparison

Engineering Selection Recommendations

Ohmite 41F220: Select this part for applications where the original specification is required and inventory is available. The part maintains active status with established supply.

Vishay Dale ALSR01220R0FE12: This substitute is electrically and mechanically equivalent for 220 Ohm ±1% 1W axial wirewound applications. The ALSR01220R0FE12 offers ROHS3 compliance, moisture-resistant construction, and a defined operating temperature range (-65°C ~ 250°C). The slightly smaller physical dimensions (0.110" Dia x 0.406" L) may provide layout advantages in space-constrained designs. Temperature coefficient specification (±30ppm/°C) is marginally higher than the main part (±20ppm/°C) and should be evaluated for precision applications requiring sub-50ppm/°C stability.

Selection between these parts should be based on compliance requirements, environmental conditions, and available inventory at the time of procurement.

Frequently Asked Questions (FAQ)

Q: Can the Vishay Dale ALSR01220R0FE12 be used as a direct replacement for the Ohmite 41F220?

A: Yes. Both parts are 220 Ohm ±1% 1W axial wirewound resistors with identical electrical specifications and package configuration. The ALSR01220R0FE12 is slightly smaller in physical dimensions but remains compatible with standard axial component footprints.

Q: What is the difference in temperature coefficient between these parts?

A: The Ohmite 41F220 specifies ±20ppm/°C while the Vishay Dale ALSR01220R0FE12 specifies ±30ppm/°C. For applications requiring resistance stability better than ±30ppm/°C across temperature variations, the Ohmite part may be preferred.

Q: Does the Vishay Dale substitute offer any advantages?

A: The ALSR01220R0FE12 provides ROHS3 compliance, moisture-resistant construction, and a specified operating temperature range of -65°C ~ 250°C. These features may be beneficial for applications in regulated industries or harsh environmental conditions.

Q: Are the physical dimensions compatible with existing PCB layouts?

A: The Vishay Dale ALSR01220R0FE12 (0.110" Dia x 0.406" L) is slightly smaller than the Ohmite 41F220 (0.126" Dia x 0.437" L). Both dimensions are within standard axial component tolerances and compatible with conventional through-hole PCB footprints. Verify specific layout constraints for your application.

Q: What is the RoHS compliance status?

A: The Ohmite 41F220 is RoHS non-compliant. The Vishay Dale ALSR01220R0FE12 is ROHS3 compliant. For applications subject to RoHS regulations, the Vishay Dale part is required.