RS0101R500FS73 Equivalent & Substitute Parts

Part Overview

The RS0101R500FS73 is a 1.5 Ohm, 10W 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 the 10W range. The part is currently active in production with 917 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and application continuity when the primary part becomes unavailable or when alternative packaging formats are required.

Substiute Parts

RS0101R500FS73

Vishay DaleIn Stock: 952RS0101R500FS73 Datasheet

Current PartRFQ

RS0101R500FE73

Vishay DaleIn Stock: 2134RS0101R500FE73 Datasheet

Parametric EquivalentRFQ

80F1R5

OhmiteIn Stock: 112180F1R5 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the RS0101R500FS73 are qualified based on electrical and mechanical parameter equivalence. The primary substitution criteria are:

Electrical Parameters (Must Match):

• Resistance value: 1.5 Ohms
• Tolerance: ±1%
• Power rating: 10W
• Temperature coefficient: ±50ppm/°C
• Composition: Wirewound

Mechanical Parameters (Must Match):

• Package type: Axial
• Physical dimensions: Compatible with 0.375" Dia x 1.780" L footprint
• Number of terminations: 2

Allowable Variations:

• Packaging format (Tape & Reel, Cut Tape, or Bulk)
• Moisture resistance features (present or not specified)
• RoHS compliance status
• Operating temperature range (when equal or broader)

The RS0101R500FS73 has two qualified substitutes: RS0101R500FE73 (Vishay Dale, parametric equivalent) and 80F1R5 (Ohmite, manufacturer-recommended equivalent).

Parameter Comparison

Engineering Selection Recommendations

RS0101R500FE73 (Vishay Dale): This part is electrically and mechanically identical to the RS0101R500FS73 with the same footprint dimensions. The primary difference is packaging format (Cut Tape versus Tape & Reel) and RoHS3 compliance status. This substitute is suitable for applications where RoHS compliance is required or when Cut Tape packaging is preferred. Higher inventory availability (2054 units) supports procurement continuity.

80F1R5 (Ohmite Acrasil® 80 Series): This part meets all electrical specifications and is manufacturer-recommended as an equivalent. Physical dimensions are slightly larger (0.406" Dia x 1.843" L versus 0.375" Dia x 1.780" L), requiring verification of PCB layout clearance. This substitute is appropriate when Ohmite component qualification is required or when bulk packaging is preferred. RoHS non-compliant status matches the primary part.

Frequently Asked Questions (FAQ)

Q: Can RS0101R500FE73 be used as a direct replacement for RS0101R500FS73?

A: Yes. Both parts are manufactured by Vishay Dale with identical electrical specifications (1.5 Ohms, ±1%, 10W, ±50ppm/°C) and mechanical footprint (0.375" Dia x 1.780" L). The difference is packaging format (Cut Tape versus Tape & Reel) and RoHS compliance. PCB layout and assembly processes remain unchanged.

Q: What is the physical dimension difference between RS0101R500FS73 and 80F1R5?

A: RS0101R500FS73 measures 0.375" Dia x 1.780" L (9.53mm x 45.21mm). The 80F1R5 measures 0.406" Dia x 1.843" L (10.30mm x 46.80mm). The 80F1R5 is approximately 0.031" larger in diameter and 0.063" longer. PCB layout clearance must be verified before substitution.

Q: Are there RoHS compliance differences between these parts?

A: Yes. RS0101R500FS73 is RoHS non-compliant. RS0101R500FE73 is ROHS3 compliant. 80F1R5 is RoHS non-compliant. Select RS0101R500FE73 for applications requiring RoHS3 compliance.

Q: Do all three parts have the same temperature coefficient?

A: Yes. All three parts have a temperature coefficient of ±50ppm/°C, ensuring consistent performance across the operating temperature range.

Q: Which substitute has the best inventory availability?

A: RS0101R500FE73 has the highest inventory with 2054 units in stock, compared to 917 units for RS0101R500FS73 and 1051 units for 80F1R5.

Q: Can 80F1R5 be used in applications with space constraints?

A: No. The 80F1R5 has larger physical dimensions than the primary part. Applications with tight PCB layout constraints should use RS0101R500FS73 or RS0101R500FE73 to maintain the original 0.375" Dia x 1.780" L footprint.