UB5C-50RF8 Equivalent & Substitute Parts

Part Overview

The UB5C-50RF8 is a 50 Ohm, ±1% tolerance, 5W 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 Active in product status with 709 units currently in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

UB5C-50RF8

RiedonIn Stock: 744UB5C-50RF8 Datasheet

Current PartRFQ

45F50RE

OhmiteIn Stock: 637045F50RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 45F50RE from Ohmite qualifies as a substitute for the UB5C-50RF8 based on the following critical parameters:

• Resistance value: 50 Ohms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 5W (exact match)
• Composition: Wirewound (exact match)
• Package: Axial (exact match)
• Temperature coefficient: ±20ppm/°C (exact match)
• Terminations: 2 (exact match)
• RoHS compliance: ROHS3 Compliant (exact match)

Both parts maintain identical electrical performance specifications and mechanical compatibility for through-hole axial mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-50RF8 and 45F50RE are Active products with ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements. Selection between these parts should be based on:

• Physical space constraints: The UB5C-50RF8 has a smaller footprint (6.40mm x 12.70mm) compared to the 45F50RE (8.70mm x 23.80mm). Applications with limited board space may require the Riedon component.
• Packaging requirements: The UB5C-50RF8 is supplied in Tape & Reel format, while the 45F50RE is supplied in Bulk packaging. Procurement and assembly processes should align with available packaging options.
• Inventory availability: The 45F50RE has higher stock availability (6345 units) compared to the UB5C-50RF8 (709 units).

Frequently Asked Questions (FAQ)

Q: Can the 45F50RE directly replace the UB5C-50RF8 in all applications?

A: The 45F50RE matches all critical electrical parameters (50 Ohms, ±1%, 5W, ±20ppm/°C) and composition (wirewound, axial package). However, the larger physical dimensions (8.70mm x 23.80mm versus 6.40mm x 12.70mm) may affect board layout compatibility. Verify available mounting space before substitution.

Q: Are there differences in operating temperature ranges?

A: The UB5C-50RF8 specifies an operating temperature range of -55°C to 250°C. The 45F50RE does not provide an operating temperature range in the available specifications. Applications requiring operation at temperature extremes should confirm the 45F50RE's thermal performance with the manufacturer.

Q: What is the difference in packaging between these parts?

A: The UB5C-50RF8 is supplied in Tape & Reel (TR) format, suitable for automated assembly processes. The 45F50RE is supplied in Bulk packaging, which may require manual handling or alternative assembly procedures.

Q: Do both parts meet the same compliance standards?

A: Both parts are ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic components in most markets.