43F220 Equivalent & Substitute Parts Reference

Part Overview

The Ohmite 43F220 is a 220 Ohm ±1% 3W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is classified as Active and maintains 971 pieces in current inventory stock. The 43F220 serves as a precision current-limiting and load resistor in industrial and commercial electronic applications requiring stable resistance values across temperature variations.

Substitute parts are identified to address packaging preferences, compliance requirements, and supply chain flexibility while maintaining electrical and mechanical compatibility within the specified parameter tolerances.

Substiute Parts

43F220

OhmiteIn Stock: 102543F220 Datasheet

Current PartRFQ

43F220E

OhmiteIn Stock: 86143F220E Datasheet

DirectRFQ

ALSR03220R0FE12

Vishay DaleIn Stock: 890ALSR03220R0FE12 Datasheet

DirectRFQ

RS02B220R0FS70

Vishay DaleIn Stock: 1864RS02B220R0FS70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F220 is determined by the following mandatory parameters:

• Resistance value: 220 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Termination count: 2 (exact match required)

All identified substitute parts meet these core electrical and mechanical criteria. Variations in physical dimensions, temperature coefficient, operating temperature range, and compliance certifications do not affect functional substitutability within standard circuit applications.

Parameter Comparison

Engineering Selection Recommendations

43F220E (Ohmite): Direct manufacturer variant offering identical electrical specifications and physical dimensions to the primary 43F220. This part achieves RoHS compliance and specifies an extended operating temperature range of -55°C to 275°C. Selection is appropriate for applications requiring regulatory compliance or bulk packaging formats.

ALSR03220R0FE12 (Vishay Dale): Cross-manufacturer substitute with equivalent electrical performance. Features moisture-resistant construction and operates across -65°C to 250°C. Physical dimensions are reduced (0.180" diameter vs. 0.220" diameter), which may provide space optimization in compact layouts. Temperature coefficient is ±30ppm/°C, representing a 50% increase relative to the primary part.

RS02B220R0FS70 (Vishay Dale): Cross-manufacturer substitute with moisture-resistant construction and ±20ppm/°C temperature coefficient matching the primary part. Supplied in Cut Tape format. Operating range spans -65°C to 250°C. Physical dimensions (0.187" diameter x 0.560" length) fall between the primary part and ALSR variant.

Frequently Asked Questions (FAQ)

Q: Can the 43F220E replace the 43F220 in existing designs?

A: Yes. The 43F220E maintains identical resistance, tolerance, power rating, composition, and physical dimensions. The primary differences are packaging format (Bulk vs. standard) and RoHS compliance status. Electrical performance is equivalent.

Q: What is the impact of different physical dimensions among substitute parts?

A: Physical dimension variations affect PCB layout and mechanical fit. The ALSR03220R0FE12 features a smaller diameter (0.180" vs. 0.220"), while the RS02B220R0FS70 presents intermediate dimensions (0.187" diameter). Verify PCB footprint clearances and component spacing before substitution in space-constrained applications.

Q: How does temperature coefficient variation affect circuit performance?

A: The ALSR03220R0FE12 specifies ±30ppm/°C compared to ±20ppm/°C for the primary part and RS02B220R0FS70. This 50% increase in temperature sensitivity may impact precision circuits requiring tight resistance stability across temperature ranges. For general-purpose applications, this difference is typically negligible.

Q: Are moisture-resistant variants required for this application?

A: Moisture resistance is an optional feature provided by Vishay Dale substitutes (ALSR03220R0FE12 and RS02B220R0FS70). Selection depends on environmental exposure and application requirements. Standard wirewound construction is adequate for typical indoor industrial environments.

Q: What packaging format should be selected for production assembly?

A: The 43F220E is supplied in Bulk format, the RS02B220R0FS70 in Cut Tape (CT), and the primary 43F220 in standard packaging. Cut Tape format is optimized for automated pick-and-place assembly, while Bulk format suits manual or semi-automated processes. Verify compatibility with your assembly equipment.

Q: Does RoHS compliance status affect functional substitutability?

A: No. RoHS compliance is a regulatory and supply chain consideration, not an electrical or mechanical parameter. The 43F220E (RoHS Compliant) and 43F220 (RoHS Non-compliant) are functionally equivalent. Compliance selection depends on end-product regulatory requirements and customer specifications.