UB5C-75RF8 Equivalent & Substitute Parts

Part Overview

The UB5C-75RF8 is a 75 Ohm, ±1% tolerance, 5W axial wirewound resistor manufactured by Riedon. This through-hole component is designed for current sense applications and features flame-proof, moisture-resistant, and pulse-withstanding characteristics. The part is Active in product status and widely used in industrial and electronic applications requiring precision current measurement and high reliability. Substitute parts are identified when original inventory is unavailable or when equivalent electrical and mechanical specifications are required for system continuity.

Substiute Parts

UB5C-75RF8

RiedonIn Stock: 1140UB5C-75RF8 Datasheet

Current PartRFQ

45F75RE

OhmiteIn Stock: 86545F75RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UB5C-75RF8 are qualified based on the following critical parameters that determine functional equivalence:

• Resistance Value: 75 Ohms (exact match required)
• Tolerance: ±1% (ensures precision in current sense applications)
• Power Rating: 5W (maintains thermal performance requirements)
• Composition: Wirewound (required for current sense functionality)
• Package Type: Axial (ensures mechanical compatibility with through-hole PCB layouts)
• Temperature Coefficient: ±20ppm/°C (maintains stability across operating conditions)
• Regulatory Compliance: ROHS3 Compliant and REACH Unaffected (ensures environmental and safety standards)

The substitute part 45F75RE from Ohmite meets all these critical parameters and is therefore electrically and mechanically interchangeable with the UB5C-75RF8.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-75RF8 and 45F75RE are Active products with full ROHS3 compliance and REACH Unaffected status, meeting current regulatory requirements for industrial and commercial applications. The electrical specifications are identical across all critical parameters: 75 Ohm resistance, ±1% tolerance, 5W power rating, and ±20ppm/°C temperature coefficient. Both components are wirewound axial resistors suitable for current sense applications.

The primary difference is physical dimension. The 45F75RE is larger (0.343" Dia x 0.937" L) compared to the UB5C-75RF8 (0.250" Dia x 0.500" L). PCB layout compatibility must be verified before substitution to ensure the larger body does not create mechanical interference with adjacent components or board constraints.

Frequently Asked Questions (FAQ)

Q: Can the 45F75RE replace the UB5C-75RF8 in all applications?

A: The 45F75RE is electrically equivalent to the UB5C-75RF8 across all specified parameters. However, physical dimensions differ. Verify PCB layout clearance before substitution, as the 45F75RE has a larger body diameter and length.

Q: Are there any performance differences between these two parts?

A: No. Both parts share identical electrical specifications: 75 Ohm resistance, ±1% tolerance, 5W power rating, ±20ppm/°C temperature coefficient, and -55°C to 250°C operating range. Performance in current sense applications is equivalent.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the UB5C-75RF8 and 45F75RE are ROHS3 Compliant and REACH Unaffected, meeting current environmental and safety regulations.

Q: What is the primary consideration when substituting these parts?

A: Physical dimensions are the primary consideration. The 45F75RE is substantially larger than the UB5C-75RF8. Confirm that the larger body fits within your PCB layout constraints and does not interfere with neighboring components.

Q: Are both parts currently available?

A: Both parts are Active in product status. Inventory availability should be confirmed with your component supplier, as stock levels vary.