UB3C-820RF1 Equivalent & Substitute Parts

Part Overview

The UB3C-820RF1 is an 820 Ohm ±1% 3W 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 in active production status with 976 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range.

Substiute Parts

UB3C-820RF1

RiedonIn Stock: 1077UB3C-820RF1 Datasheet

Current PartRFQ

43F820E

OhmiteIn Stock: 85343F820E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 43F820E from Ohmite qualifies as a substitute for the UB3C-820RF1 based on the following critical parameters:

• Resistance value: 820 Ohms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 3W (exact match)
• Composition: Wirewound (exact match)
• Package: Axial (exact match)
• Temperature coefficient: ±20ppm/°C (exact match)
• RoHS compliance: ROHS3 Compliant (equivalent regulatory status)

Both parts meet the electrical and mechanical requirements for direct substitution in applications requiring 820 Ohm 3W axial wirewound resistors with ±1% tolerance.

Parameter Comparison

Engineering Selection Recommendations

Both the UB3C-820RF1 and 43F820E are active production components with equivalent regulatory compliance. The UB3C-820RF1 offers additional application-specific features including current sense designation, flame proof, moisture resistant, and pulse withstanding characteristics. The 43F820E is classified under the Ohmicone® 40 series. Selection between these parts should be based on design requirements for the additional protective features and specific application constraints. Both parts maintain ROHS3 compliance and REACH unaffected status, suitable for regulated manufacturing environments.

Frequently Asked Questions (FAQ)

Q: Can the 43F820E directly replace the UB3C-820RF1 in existing designs?

A: Both parts share identical electrical specifications (820 Ohms, ±1%, 3W, ±20ppm/°C) and axial package configuration. Physical dimensions differ (UB3C-820RF1: 0.157" Dia x 0.350" L; 43F820E: 0.220" Dia x 0.594" L), requiring verification of board layout and mechanical clearance constraints.

Q: What is the significance of the current sense feature on the UB3C-820RF1?

A: The current sense designation indicates the UB3C-820RF1 is optimized for current measurement applications. The 43F820E does not carry this designation, though both parts meet the same electrical performance criteria.

Q: Are there operating temperature differences between these parts?

A: The UB3C-820RF1 specifies an operating range of -55°C to 250°C. The 43F820E does not provide an operating temperature range in the available data. Both parts share the same temperature coefficient of ±20ppm/°C.

Q: Do both parts meet the same compliance standards?

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

Q: What are the physical dimension differences?

A: The UB3C-820RF1 measures 0.157" diameter by 0.350" length (4.00mm x 8.90mm). The 43F820E measures 0.220" diameter by 0.594" length (5.60mm x 15.10mm). Larger physical dimensions of the 43F820E may affect board layout compatibility.