45F47RE Equivalent & Substitute Parts

Part Overview

The Ohmite 45F47RE is a 5W wirewound axial resistor with 47 Ohms resistance and ±1% tolerance, designed for through-hole applications. This component is classified as Active product status with full RoHS compliance. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and environmental ratings align with the original component's operational requirements.

Substiute Parts

45F47RE

OhmiteIn Stock: 95945F47RE Datasheet

Current PartRFQ

RS00547R00FE73

Vishay DaleIn Stock: 2080RS00547R00FE73 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 45F47RE is determined by matching the following critical parameters:

• Resistance value: 47 Ohms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Termination count: 2

The substitute part RS00547R00FE73 (Vishay Dale) meets all primary electrical specifications. Physical dimensions vary slightly (0.312" Dia x 0.875" L versus 0.343" Dia x 0.937" L), which remains within acceptable mechanical tolerances for standard PCB footprints designed for axial resistors. Operating temperature range differs (-65°C ~ 250°C for substitute versus -55°C ~ 275°C for original), requiring verification for applications requiring the full upper temperature specification of the 45F47RE.

Parameter Comparison

Engineering Selection Recommendations

Both the 45F47RE and RS00547R00FE73 maintain Active product status with current manufacturing support. The 45F47RE offers extended upper operating temperature capability (275°C maximum), suitable for high-temperature applications. The RS00547R00FE73 provides moisture-resistant construction and ROHS3 compliance, with slightly reduced physical dimensions that may facilitate denser PCB layouts.

Selection between these components should prioritize application-specific temperature requirements. For circuits operating above 250°C, the 45F47RE is the appropriate choice. For standard industrial and commercial applications within the -65°C ~ 250°C range, the RS00547R00FE73 offers equivalent electrical performance with additional moisture resistance.

Frequently Asked Questions (FAQ)

Q: Can RS00547R00FE73 replace 45F47RE in all applications?

A: Electrical substitution is valid for applications operating within -65°C ~ 250°C. Applications requiring operation above 250°C must use the 45F47RE due to its extended temperature rating.

Q: Are the physical dimension differences significant?

A: The RS00547R00FE73 is slightly smaller (0.312" Dia x 0.875" L versus 0.343" Dia x 0.937" L). Standard axial resistor PCB footprints accommodate both dimensions. Verify specific board layout constraints if space is critical.

Q: What is the difference between RoHS and ROHS3 compliance?

A: Both designations indicate compliance with Restriction of Hazardous Substances regulations. ROHS3 represents the current regulatory standard. Both components are compliant with hazardous substance restrictions.

Q: Does the moisture-resistant feature of RS00547R00FE73 affect electrical performance?

A: Moisture resistance is a construction feature that does not alter the electrical specifications (resistance, tolerance, temperature coefficient, power rating). Both components deliver identical electrical performance.

Q: Which component should be selected for new designs?

A: For new designs without specific high-temperature requirements, RS00547R00FE73 is suitable. For designs requiring maximum temperature capability or existing designs using 45F47RE, maintain the original specification.