Ohmite 43F47R Equivalent & Substitute Parts

Part Overview

The Ohmite 43F47R is a 47 Ohm ±1% 3W axial wirewound through-hole resistor from the Ohmicone® 40 series. This component is currently active in production with 786 pieces in stock. Equivalent and substitute parts are identified when design requirements permit component changes due to packaging availability, supply chain considerations, or compliance updates while maintaining electrical and mechanical compatibility within specified parameters.

Substiute Parts

43F47R

OhmiteIn Stock: 89043F47R Datasheet

Current PartRFQ

43F47RE

OhmiteIn Stock: 108743F47RE Datasheet

DirectRFQ

ALSR0347R00FE12

Vishay DaleIn Stock: 2894ALSR0347R00FE12 Datasheet

DirectRFQ

RS02B47R00FS70

Vishay DaleIn Stock: 1890RS02B47R00FS70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 43F47R are qualified based on the following electrical and mechanical parameters:

• Resistance Value: 47 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power Rating: 3W (exact match required)
• Composition: Wirewound (exact match required)
• Package: Axial through-hole (exact match required)
• Terminations: 2-pin configuration (exact match required)

The following parts meet these core substitution criteria:

1. 43F47RE (Ohmite) – Direct manufacturer equivalent with bulk packaging
2. ALSR0347R00FE12 (Vishay Dale) – Cross-manufacturer substitute with moisture-resistant construction
3. RS02B47R00FS70 (Vishay Dale) – Cross-manufacturer substitute with moisture-resistant construction

Parameter Comparison

Engineering Selection Recommendations

43F47RE (Ohmite) is the primary direct equivalent, maintaining identical electrical specifications and physical dimensions. This part is RoHS Compliant and provides the widest operating temperature range (-55°C ~ 275°C), making it suitable for applications requiring extended thermal performance.

ALSR0347R00FE12 (Vishay Dale) qualifies as a functional substitute with identical electrical parameters. Physical dimensions are slightly reduced (0.180" Dia x 0.500" L), which may require PCB layout verification. This part includes moisture-resistant construction and is ROHS3 Compliant. Temperature coefficient is ±30ppm/°C versus ±20ppm/°C for the main part.

RS02B47R00FS70 (Vishay Dale) qualifies as a functional substitute with identical electrical parameters and temperature coefficient (±20ppm/°C). Physical dimensions are comparable (0.187" Dia x 0.560" L). This part includes moisture-resistant construction and is supplied in Cut Tape format. RoHS compliance status is non-compliant, matching the original part specification.

Selection should prioritize compliance requirements and thermal operating range specifications for the target application.

Frequently Asked Questions (FAQ)

Q: Can 43F47RE be used as a direct replacement for 43F47R?

A: Yes. Both parts are manufactured by Ohmite with identical electrical specifications (47 Ohms ±1%, 3W), composition (wirewound), and physical dimensions (0.220" Dia x 0.594" L). The primary difference is packaging format (bulk versus standard) and RoHS compliance status (43F47RE is RoHS Compliant).

Q: What are the physical dimension differences between substitute parts?

A: The 43F47R and 43F47RE maintain identical dimensions (0.220" Dia x 0.594" L). The ALSR0347R00FE12 is smaller (0.180" Dia x 0.500" L), and the RS02B47R00FS70 is intermediate (0.187" Dia x 0.560" L). PCB layout verification is required when substituting with physically different components.

Q: Are Vishay Dale parts electrically equivalent?

A: Both Vishay Dale parts (ALSR0347R00FE12 and RS02B47R00FS70) meet the core electrical requirements: 47 Ohms ±1%, 3W wirewound axial resistors. The ALSR0347R00FE12 has a ±30ppm/°C temperature coefficient versus ±20ppm/°C for the original part. Both include moisture-resistant construction.

Q: Which substitute part has the best compliance status?

A: The 43F47RE (Ohmite) is RoHS Compliant with the widest operating temperature range (-55°C ~ 275°C). The ALSR0347R00FE12 is ROHS3 Compliant. The RS02B47R00FS70 maintains RoHS non-compliant status matching the original 43F47R.

Q: Can I use these parts interchangeably in my design?

A: Electrical interchangeability is confirmed for all listed parts. Mechanical interchangeability requires verification of PCB hole spacing and component clearance, particularly for the physically smaller ALSR0347R00FE12. Operating temperature range and compliance certifications must align with application requirements.