UB5C-820RF1 Equivalent & Substitute Parts

Part Overview

The UB5C-820RF1 is an 820 Ohms ±1% 5W axial wirewound resistor manufactured by Riedon. This through-hole component is designed for current sensing 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 where precision resistance and thermal stability are required. Substitute parts may be necessary due to inventory constraints, supply chain considerations, or specific application requirements while maintaining equivalent electrical and mechanical performance.

Substiute Parts

UB5C-820RF1

RiedonIn Stock: 1056UB5C-820RF1 Datasheet

Current PartRFQ

45F820E

OhmiteIn Stock: 89945F820E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UB5C-820RF1 are qualified based on the following critical parameters that determine functional equivalence:

• Resistance value: 820 Ohms (exact match required)
• Tolerance: ±1% (precision specification)
• Power rating: 5W (thermal capability)
• Composition: Wirewound (construction type)
• Package: Axial (form factor and termination style)
• Temperature coefficient: ±20ppm/°C (stability specification)
• RoHS compliance: ROHS3 Compliant (regulatory requirement)

The substitute part 45F820E from Ohmite meets all these critical parameters, ensuring direct functional and mechanical compatibility in applications requiring the UB5C-820RF1.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-820RF1 and 45F820E are Active status components with ROHS3 compliance and equivalent electrical specifications. Selection between these parts should be based on:

• Physical space constraints: The UB5C-820RF1 has a smaller diameter (0.250" vs 0.343") and shorter length (0.500" vs 0.937"), making it suitable for compact layouts
• The 45F820E from Ohmite's Ohmicone® 40 series provides an alternative with identical electrical performance
• Both parts maintain ±20ppm/°C temperature coefficient stability and support the full -55°C to 250°C operating range
• Regulatory compliance is equivalent for both parts under ROHS3 and EAR99 classifications

Frequently Asked Questions (FAQ)

Q: Can the 45F820E directly replace the UB5C-820RF1 in all applications?

A: Yes, the 45F820E meets all critical electrical parameters: 820 Ohms ±1% resistance, 5W power rating, ±20ppm/°C temperature coefficient, and wirewound axial construction. Physical dimensions differ, so verify PCB layout and mechanical clearance before substitution.

Q: What are the key differences between these parts?

A: The primary difference is physical size. The UB5C-820RF1 measures 0.250" diameter by 0.500" length, while the 45F820E measures 0.343" diameter by 0.937" length. Electrical specifications and compliance certifications are identical.

Q: Are both parts suitable for current sensing applications?

A: The UB5C-820RF1 is specifically designated for current sensing with flame-proof and pulse-withstanding features. The 45F820E provides equivalent resistance and power handling. Verify application-specific requirements for current sensing performance before selection.

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

A: The UB5C-820RF1 operates from -55°C to 250°C. Operating temperature range for the 45F820E was not provided in the specification data.

Q: Are these parts RoHS compliant?

A: Yes, both the UB5C-820RF1 and 45F820E are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.