43F4R0 Equivalent & Substitute Parts

Part Overview

The 43F4R0 is a 4 Ohm ±1% 3W axial wirewound through-hole resistor manufactured by Ohmite in the Ohmicone® 40 series. This component is currently active in production with 1197 pieces in stock. Equivalent and substitute parts are necessary when the primary part becomes unavailable, when specific compliance requirements must be met, or when packaging specifications differ from application requirements.

Substiute Parts

43F4R0

OhmiteIn Stock: 129943F4R0 Datasheet

Current PartRFQ

43F4R0E

OhmiteIn Stock: 95343F4R0E Datasheet

DirectRFQ

ALSR034R000FE12

Vishay DaleIn Stock: 992ALSR034R000FE12 Datasheet

DirectRFQ

RS02B4R000FS70

Vishay DaleIn Stock: 1934RS02B4R000FS70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 43F4R0 is determined by matching the following critical parameters: resistance value (4 Ohms), tolerance (±1%), power rating (3W), composition (wirewound), package type (axial), and temperature coefficient (±50ppm/°C). All identified substitute parts meet these core electrical and mechanical specifications. Secondary considerations include physical dimensions, RoHS compliance status, and moisture resistance features, which may influence selection based on specific application constraints.

Parameter Comparison

Engineering Selection Recommendations

43F4R0E (Ohmite): Direct equivalent from the same manufacturer with identical electrical specifications and physical dimensions. ROHS3 compliant, making it suitable for applications requiring RoHS compliance. Recommended as the primary substitute when Ohmite components are specified.

ALSR034R000FE12 (Vishay Dale): Meets all core electrical parameters with added moisture resistance feature. ROHS3 compliant. Smaller physical dimensions (0.180" Dia x 0.500" L) may require PCB layout verification. Suitable for applications in humid environments or where RoHS compliance is mandatory.

RS02B4R000FS70 (Vishay Dale): Meets all core electrical parameters with moisture resistance feature. Dimensions (0.187" Dia x 0.560" L) are intermediate between the primary part and ALSR034R000FE12. RoHS non-compliant status matches the original 43F4R0. Highest inventory availability (1831 pieces). Suitable for applications where RoHS compliance is not required.

Frequently Asked Questions (FAQ)

Q: Can 43F4R0E be used as a direct replacement for 43F4R0? A: Yes. Both parts are manufactured by Ohmite with identical resistance (4 Ohms), tolerance (±1%), power rating (3W), composition (wirewound), package type (axial), and temperature coefficient (±50ppm/°C). Physical dimensions are identical. The primary difference is packaging format and RoHS compliance status.

Q: What are the physical dimension differences between substitute parts? A: The 43F4R0 and 43F4R0E measure 0.220" Dia x 0.594" L. The ALSR034R000FE12 is smaller at 0.180" Dia x 0.500" L. The RS02B4R000FS70 measures 0.187" Dia x 0.560" L. Verify PCB layout clearances before selecting smaller alternatives.

Q: Which substitute part is RoHS compliant? A: Both 43F4R0E and ALSR034R000FE12 are ROHS3 compliant. The 43F4R0 and RS02B4R000FS70 are RoHS non-compliant.

Q: Do any substitute parts offer enhanced environmental protection? A: ALSR034R000FE12 and RS02B4R000FS70 both feature moisture resistance. The 43F4R0 and 43F4R0E are standard composition without this feature.

Q: Are all substitute parts available in the same packaging format? A: No. 43F4R0E is supplied in Bulk packaging. ALSR034R000FE12 is supplied in Bulk packaging. RS02B4R000FS70 is supplied in Cut Tape (CT) format. Verify packaging compatibility with assembly processes.