Ohmite 43F18R Equivalent & Substitute Parts

Part Overview

The Ohmite 43F18R is an 18 Ohm ±1% 3W through-hole resistor with axial wirewound construction from the Ohmicone® 40 series. This component is classified as Active product status and is currently in stock with 1057 units available. The 43F18R operates within a temperature coefficient of ±20ppm/°C and is housed in a 0.220" diameter by 0.594" length axial package. Finding equivalent substitute parts is necessary when the primary part becomes unavailable, when bulk packaging is required, or when compliance requirements differ between procurement specifications.

Substiute Parts

43F18R

OhmiteIn Stock: 112243F18R Datasheet

Current PartRFQ

43F18RE

OhmiteIn Stock: 215743F18RE Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43F18R are determined by strict equivalence across the following critical parameters: resistance value (18 Ohms), tolerance (±1%), power rating (3W), composition (wirewound), package type (axial), temperature coefficient (±20ppm/°C), and physical dimensions (0.220" Dia x 0.594" L). All substitute parts must maintain identical electrical and mechanical specifications to ensure direct interchangeability in circuit applications. Packaging format and compliance certifications may differ between the main part and substitutes without affecting functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

The 43F18RE serves as a direct electrical and mechanical equivalent to the 43F18R. Both parts are manufactured by Ohmite within the Ohmicone® 40 series and maintain identical specifications across all critical parameters: 18 Ohm resistance, ±1% tolerance, 3W power rating, wirewound composition, axial package, and ±20ppm/°C temperature coefficient. Selection between these parts should be based on packaging requirements and compliance specifications. The 43F18RE is supplied in bulk packaging and carries ROHS3 compliance certification, whereas the 43F18R is RoHS non-compliant. Both parts maintain Active product status and are available in inventory. The 43F18RE offers higher stock availability with 2053 units in stock compared to 1057 units for the 43F18R.

Frequently Asked Questions (FAQ)

Q: Can the 43F18RE be used as a direct replacement for the 43F18R? A: Yes. The 43F18RE is electrically and mechanically equivalent to the 43F18R. Both parts share identical resistance, tolerance, power rating, composition, package type, temperature coefficient, and physical dimensions. The parts differ only in packaging format and RoHS compliance status.

Q: What is the difference between the 43F18R and 43F18RE? A: The primary differences are packaging and compliance. The 43F18R is supplied in standard packaging and is RoHS non-compliant. The 43F18RE is supplied in bulk packaging and is ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Does the RoHS compliance difference affect circuit performance? A: No. RoHS compliance status reflects manufacturing and material sourcing standards but does not alter the electrical performance or functional characteristics of the component. Both parts operate identically within the circuit.

Q: Are there any dimensional or thermal differences between these parts? A: No. Both the 43F18R and 43F18RE maintain identical physical dimensions (0.220" Dia x 0.594" L) and temperature coefficient (±20ppm/°C). They are mechanically and thermally interchangeable.

Q: Which part should be selected for new designs? A: Selection depends on compliance requirements and packaging preferences. For applications requiring RoHS3 compliance, the 43F18RE is the appropriate choice. For applications without specific compliance mandates, either part is suitable based on packaging and inventory availability.