UB5C-56RF8 Equivalent & Substitute Parts

Part Overview

The UB5C-56RF8 is a 56 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 currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

UB5C-56RF8

RiedonIn Stock: 1014UB5C-56RF8 Datasheet

Current PartRFQ

45F56RE

OhmiteIn Stock: 118645F56RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 45F56RE from Ohmite qualifies as a substitute for the UB5C-56RF8 based on the following critical parameters:

• Identical resistance value: 56 Ohms
• Matching tolerance: ±1%
• Equivalent power rating: 5W
• Same composition: Wirewound
• Identical package configuration: Axial
• Matching temperature coefficient: ±20ppm/°C
• Compatible operating temperature range: -55°C ~ 275°C (exceeds minimum requirement)
• Regulatory compliance: RoHS Compliant

Both components share the same electrical performance specifications and axial through-hole form factor, enabling direct functional substitution in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-56RF8 and 45F56RE maintain active product status with full regulatory compliance. The 45F56RE provides an extended operating temperature maximum of 275°C compared to the UB5C-56RF8 at 250°C, offering additional thermal margin in high-temperature applications. Both components satisfy RoHS compliance requirements and carry unlimited moisture sensitivity ratings. Selection between these parts should be based on availability, packaging format preference (Tape & Reel versus Bulk), and specific thermal operating conditions within the stated ranges.

Frequently Asked Questions (FAQ)

Q: Can the 45F56RE directly replace the UB5C-56RF8 in existing designs?

A: Yes. Both components share identical electrical specifications (56 Ohms, ±1%, 5W, ±20ppm/°C) and axial package configuration, enabling direct functional substitution without circuit modification.

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

A: The UB5C-56RF8 measures 0.250" diameter × 0.500" length (6.40mm × 12.70mm). The 45F56RE measures 0.343" diameter × 0.937" length (8.70mm × 23.80mm). Physical layout verification is required for space-constrained applications.

Q: Are there temperature range limitations when substituting?

A: The 45F56RE operates to 275°C maximum, exceeding the UB5C-56RF8 specification of 250°C. Both maintain performance across the -55°C minimum threshold. Applications operating above 250°C should confirm compatibility with the 45F56RE's extended range.

Q: What packaging formats are available?

A: The UB5C-56RF8 is supplied in Tape & Reel format. The 45F56RE is supplied in Bulk packaging. Procurement and assembly process requirements should guide packaging selection.

Q: Do both parts meet current regulatory requirements?

A: Yes. The UB5C-56RF8 carries RoHS3 compliance. The 45F56RE carries RoHS compliance. Both satisfy current regulatory standards for electronic component use.