UB5C-820RF8 Equivalent & Substitute Parts

Part Overview

The UB5C-820RF8 is an 820 Ohms ±1% 5W through-hole axial wirewound resistor manufactured by Riedon. This component is designed for current sense applications and features flame proof, moisture resistant, and pulse withstanding characteristics. The part is Active status and widely used in industrial and power electronics applications requiring precision resistance with high power dissipation capability. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter set.

Substiute Parts

UB5C-820RF8

RiedonIn Stock: 968UB5C-820RF8 Datasheet

Current PartRFQ

45F820E

OhmiteIn Stock: 89945F820E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 45F820E from Ohmite qualifies as a direct substitute for the UB5C-820RF8 based on the following critical parameters:

• Resistance value: 820 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)
• RoHS compliance: ROHS3 Compliant (exact match)

Both parts maintain identical electrical performance specifications and are housed in axial through-hole packages suitable for the same circuit board layouts and applications.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-820RF8 and 45F820E are Active status components with full ROHS3 compliance and EAR99 export classification. Selection between these parts should be based on availability, lead time, and packaging requirements. The UB5C-820RF8 is supplied in Tape & Reel packaging, while the 45F820E is supplied in Bulk packaging. Physical dimensions differ slightly (UB5C-820RF8: 0.250" Dia x 0.500" L versus 45F820E: 0.343" Dia x 0.937" L), which may impact board layout considerations in space-constrained applications. Both parts are suitable for current sense applications requiring flame proof and moisture resistant characteristics.

Frequently Asked Questions (FAQ)

Q: Can the 45F820E directly replace the UB5C-820RF8 in existing designs?

A: Yes. Both parts share identical electrical specifications (820 Ohms ±1%, 5W, ±20ppm/°C) and axial package type. However, physical dimensions differ, so verify board layout clearance before substitution.

Q: What is the significance of the ±1% tolerance specification?

A: The ±1% tolerance ensures precise resistance values within a narrow band, critical for current sense applications where accuracy directly impacts measurement reliability and circuit performance.

Q: Are there packaging differences between these parts?

A: Yes. The UB5C-820RF8 is supplied in Tape & Reel format, while the 45F820E is supplied in Bulk packaging. Select based on your procurement and assembly requirements.

Q: Do both parts meet the same environmental and compliance standards?

A: Yes. Both parts are ROHS3 compliant, classified as EAR99 for export, and carry the same HTSUS code (8533.21.0080).

Q: What is the operating temperature range for these resistors?

A: The UB5C-820RF8 operates from -55°C to 250°C. The 45F820E operating temperature range was not specified in the provided data.

Q: Why are physical dimensions different if these are equivalent parts?

A: Different manufacturers use different construction methods and form factors while maintaining identical electrical performance. Verify that the substitute part's dimensions accommodate your specific board layout and mechanical constraints.