UB3C-47RF8 Equivalent & Substitute Parts

Part Overview

The UB3C-47RF8 is a 47 Ohm, ±1% tolerance, 3W axial wirewound resistor manufactured by Riedon. This component is designed for through-hole applications requiring current sensing functionality with enhanced reliability features including flame proof, moisture resistant, and pulse withstanding characteristics. The part is currently in active production status with 758 units in stock. Substitute parts are necessary to address supply chain flexibility, alternative packaging requirements, or inventory availability across different manufacturers while maintaining equivalent electrical and mechanical performance.

Substiute Parts

UB3C-47RF8

RiedonIn Stock: 771UB3C-47RF8 Datasheet

Current PartRFQ

43F47RE

OhmiteIn Stock: 108743F47RE Datasheet

MFR RecommendedRFQ

RS02B47R00FE70

Vishay DaleIn Stock: 3925RS02B47R00FE70 Datasheet

MFR RecommendedRFQ

WW3FT47R0

Stackpole Electronics IncIn Stock: 4792WW3FT47R0 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB3C-47RF8 is determined by strict equivalence across the following critical parameters:

• Resistance value: 47 Ohms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Number of terminations: 2

All substitute parts listed meet these core electrical specifications. Variations in physical dimensions, operating temperature range extensions, packaging format (Tape & Reel versus Cut Tape versus Bulk), and feature sets (such as moisture resistance designation) do not disqualify substitution when the primary electrical parameters remain equivalent. The substitute parts are sourced from established manufacturers: Ohmite (43F47RE), Vishay Dale (RS02B47R00FE70), and Stackpole Electronics Inc (WW3FT47R0).

Parameter Comparison

Engineering Selection Recommendations

All four parts maintain active production status and meet ROHS3 or RoHS compliance requirements. Selection among the UB3C-47RF8 and its substitutes should be based on the following factors:

The UB3C-47RF8 offers the smallest physical footprint (4.00mm diameter x 8.90mm length) and includes current sense functionality with flame proof and pulse withstanding features. This configuration is optimal for space-constrained applications requiring enhanced safety characteristics.

The 43F47RE (Ohmite) provides the widest operating temperature range extension to 275°C and is available in bulk packaging. This option suits applications with elevated thermal requirements or high-volume procurement scenarios.

The RS02B47R00FE70 (Vishay Dale) and WW3FT47R0 (Stackpole) both feature identical physical dimensions (4.75mm diameter x 0.560" length) and are available in Cut Tape packaging. The Stackpole WW3FT47R0 extends the operating temperature range to 350°C, providing maximum thermal headroom. The Vishay Dale RS02B47R00FE70 maintains the lower temperature ceiling at 250°C, matching the original part specification.

All substitute parts are electrically equivalent and suitable for direct replacement in applications where the specified electrical parameters are the primary selection criteria.

Frequently Asked Questions (FAQ)

Q: Can the 43F47RE (Ohmite) be used as a direct replacement for the UB3C-47RF8?

A: Yes. Both parts share identical electrical specifications: 47 Ohms, ±1% tolerance, 3W power rating, ±20ppm/°C temperature coefficient, and wirewound axial configuration. The 43F47RE operates across a wider temperature range (-55°C to 275°C versus -55°C to 250°C) and is available in bulk packaging rather than Tape & Reel format.

Q: What are the physical dimension differences among these parts?

A: The UB3C-47RF8 has the smallest diameter (4.00mm) and shortest length (8.90mm). The 43F47RE is larger at 5.60mm diameter and 15.10mm length. The RS02B47R00FE70 and WW3FT47R0 are identical in size at 4.75mm diameter and 14.22mm length. Physical dimensions must be verified against PCB layout constraints before selection.

Q: Are there feature differences that affect substitution?

A: The UB3C-47RF8 includes current sense, flame proof, moisture resistant, and pulse withstanding features. The RS02B47R00FE70 and WW3FT47R0 specify moisture resistant characteristics. The 43F47RE does not list these features in the provided data. If these specific features are required for the application, the UB3C-47RF8 remains the primary choice.

Q: What packaging formats are available?

A: The UB3C-47RF8 is supplied in Tape & Reel format. The 43F47RE is available in Bulk packaging. The RS02B47R00FE70 and WW3FT47R0 are supplied in Cut Tape format. Packaging selection depends on assembly process requirements and order quantity.

Q: Which substitute offers the highest temperature capability?

A: The WW3FT47R0 (Stackpole) operates to 350°C, providing the maximum thermal range among all listed parts. The 43F47RE (Ohmite) extends to 275°C. The RS02B47R00FE70 and UB3C-47RF8 both operate to 250°C.

Q: Are all parts RoHS compliant?

A: Yes. The UB3C-47RF8, RS02B47R00FE70, and WW3FT47R0 are ROHS3 compliant. The 43F47RE is RoHS compliant. All parts meet environmental regulatory requirements for restricted substance use.