RS00518R00FS73 Equivalent & Substitute Parts

Part Overview

The RS00518R00FS73 is an 18 Ohm, 5W wirewound axial resistor manufactured by Vishay Dale with ±1% tolerance and moisture-resistant construction. This component is designed for through-hole applications requiring precision power dissipation in industrial and electronic equipment. The part maintains active product status with 963 units currently in stock. Substitute parts are identified to provide alternative sourcing options when the primary part becomes unavailable or when procurement requirements necessitate alternative manufacturer selections.

Substiute Parts

RS00518R00FS73

Vishay DaleIn Stock: 976RS00518R00FS73 Datasheet

Current PartRFQ

45F18R

OhmiteIn Stock: 101045F18R Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the RS00518R00FS73 is determined by strict equivalence across the following critical parameters:

• Resistance value: 18 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• Number of terminations: 2 (exact match required)

The substitute part 45F18R from Ohmite meets all critical electrical and mechanical parameters, qualifying it as a direct equivalent for the RS00518R00FS73.

Parameter Comparison

Engineering Selection Recommendations

Both the RS00518R00FS73 and 45F18R are active products with equivalent electrical specifications. Selection between these parts should be based on the following factors:

Packaging Requirements: The RS00518R00FS73 is supplied in Tape & Reel format, suitable for automated assembly processes. The 45F18R is supplied in Bulk packaging, appropriate for manual assembly or lower-volume applications.

Physical Dimensions: The 45F18R exhibits slightly larger physical dimensions (0.343" diameter vs. 0.312" diameter, and 0.937" length vs. 0.875" length). PCB layout and component spacing constraints must be evaluated to confirm mechanical compatibility.

Regulatory Compliance: Both parts carry identical RoHS non-compliant and REACH-affected status with EAR99 export classification. No compliance advantage exists between the two options.

Availability: Both parts maintain substantial inventory levels (963 units for RS00518R00FS73 and 934 units for 45F18R), supporting consistent procurement.

Frequently Asked Questions (FAQ)

Q: Can the 45F18R be used as a direct replacement for the RS00518R00FS73?

A: Yes. Both parts share identical electrical specifications: 18 Ohm resistance, ±1% tolerance, 5W power rating, wirewound composition, ±20ppm/°C temperature coefficient, and axial package configuration. Physical dimensions differ slightly; verify PCB layout compatibility before substitution.

Q: What are the key differences between these two parts?

A: The primary differences are packaging format (Tape & Reel vs. Bulk) and physical dimensions. The 45F18R is 0.031" larger in diameter and 0.062" longer than the RS00518R00FS73. Electrical performance is identical.

Q: Are there any compliance or regulatory differences?

A: No. Both parts are RoHS non-compliant, REACH-affected, and classified as EAR99 for export purposes. Regulatory status is equivalent.

Q: Which part should I select for automated assembly?

A: The RS00518R00FS73 in Tape & Reel packaging is optimized for automated pick-and-place assembly processes. The 45F18R in Bulk packaging is suitable for manual assembly or lower-volume production runs.

Q: Do the physical dimension differences affect circuit performance?

A: No. The dimensional differences do not affect electrical performance. However, verify that PCB layout, component spacing, and mechanical clearances accommodate the 45F18R's larger envelope before implementation.