Ohmite 45F18RE Equivalent & Substitute Parts

Part Overview

The Ohmite 45F18RE is an 18 Ohms ±1% 5W through-hole resistor featuring axial wirewound construction. This component is part of the Ohmicone® 40 series and maintains Active product status. The 45F18RE is packaged in a box configuration and is RoHS compliant. Alternative part numbers exist within the same electrical and mechanical specifications to accommodate different packaging requirements and supply chain considerations.

Substiute Parts

45F18RE

OhmiteIn Stock: 97845F18RE Datasheet

Current PartRFQ

45F18R

OhmiteIn Stock: 101045F18R Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The Ohmite 45F18R qualifies as a parametric equivalent to the 45F18RE based on identical electrical specifications: 18 Ohms resistance, ±1% tolerance, 5W power rating, wirewound composition, and axial package configuration. Both components share the same physical dimensions (0.343" Dia x 0.937" L), temperature coefficient (±20ppm/°C), and termination count (2). The primary distinction between these part numbers is packaging format: the 45F18RE is supplied in box packaging, while the 45F18R is supplied in bulk packaging. Both are manufactured by Ohmite within the Ohmicone® 40 series.

Parameter Comparison

Engineering Selection Recommendations

Selection between the 45F18RE and 45F18R should be based on regulatory compliance requirements and packaging specifications. The 45F18RE is RoHS compliant and suitable for applications requiring adherence to RoHS directives. The 45F18R is RoHS non-compliant and should be selected only when RoHS compliance is not a requirement. Both components are electrically and mechanically identical, with substitution feasibility determined solely by compliance status and packaging format preference. The 45F18RE in box packaging is appropriate for controlled inventory environments, while the 45F18R in bulk packaging is suitable for high-volume manufacturing operations where RoHS compliance is not mandated.

Frequently Asked Questions (FAQ)

Q: Are the 45F18RE and 45F18R electrically interchangeable? A: Yes. Both components have identical electrical specifications: 18 Ohms resistance, ±1% tolerance, 5W power rating, ±20ppm/°C temperature coefficient, and -55°C ~ 275°C operating temperature range.

Q: What is the difference between the 45F18RE and 45F18R? A: The primary differences are packaging format (box versus bulk) and RoHS compliance status. The 45F18RE is RoHS compliant; the 45F18R is RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can I use the 45F18R as a direct replacement for the 45F18RE? A: Direct replacement is possible only if RoHS compliance is not required for your application. If RoHS compliance is mandatory, the 45F18RE must be used.

Q: Are the physical dimensions identical between these parts? A: Yes. Both the 45F18RE and 45F18R have identical dimensions of 0.343" Dia x 0.937" L (8.70mm x 23.80mm) and are both axial package configuration with 2 terminations.

Q: What packaging quantities are available? A: The 45F18RE is supplied in box packaging, while the 45F18R is supplied in bulk packaging. Selection depends on your inventory management and procurement requirements.