UB5C-3KF1 Equivalent & Substitute Parts

Part Overview

The UB5C-3KF1 is a 3 kOhms ±1% 5W axial wirewound resistor manufactured by Riedon. This through-hole component is designed for current sense applications and features flame proof, moisture resistant, pulse withstanding, and safety certifications. The part is currently active in production with 1161 pieces in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

UB5C-3KF1

RiedonIn Stock: 1210UB5C-3KF1 Datasheet

Current PartRFQ

45F3K0E

OhmiteIn Stock: 100745F3K0E Datasheet

MFR RecommendedRFQ

RS0053K000FE73

Vishay DaleIn Stock: 1496RS0053K000FE73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB5C-3KF1 is determined by the following criteria:

Electrical Parameters: Resistance value (3 kOhms), tolerance (±1%), power rating (5W), and temperature coefficient (±20ppm/°C) must match exactly.

Mechanical Compatibility: Package type must be axial through-hole configuration to ensure PCB footprint compatibility.

Regulatory Compliance: All substitute parts must maintain ROHS3 compliance and REACH unaffected status.

Composition: Wirewound construction is required to maintain thermal and electrical performance characteristics.

The identified substitute parts meet all these criteria and are therefore electrically and mechanically interchangeable with the UB5C-3KF1 in applications where the specified parameters are required.

Parameter Comparison

Engineering Selection Recommendations

All three parts are active products with ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Selection between the UB5C-3KF1, 45F3K0E, and RS0053K000FE73 should be based on:

Physical Space Constraints: The UB5C-3KF1 has the smallest physical dimensions (6.40mm x 12.70mm), making it suitable for compact layouts. The 45F3K0E (8.70mm x 23.80mm) and RS0053K000FE73 (7.92mm x 22.23mm) require larger board space.

Temperature Operating Range: The UB5C-3KF1 operates from -55°C to 250°C. The RS0053K000FE73 extends the lower temperature limit to -65°C. The 45F3K0E operating temperature range is not specified.

Packaging Format: The UB5C-3KF1 is supplied in bulk packaging. The RS0053K000FE73 is supplied in cut tape format, which may affect procurement and handling procedures.

Inventory Availability: Current stock levels are UB5C-3KF1 (1161 pcs), RS0053K000FE73 (1418 pcs), and 45F3K0E (965 pcs).

Frequently Asked Questions (FAQ)

Q: Can the 45F3K0E be used as a direct replacement for the UB5C-3KF1?

A: Yes. Both parts share identical electrical specifications (3 kOhms, ±1%, 5W, ±20ppm/°C) and axial wirewound construction. However, the 45F3K0E has larger physical dimensions (8.70mm x 23.80mm versus 6.40mm x 12.70mm), which may affect PCB layout compatibility in space-constrained applications.

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

A: The UB5C-3KF1 measures 6.40mm x 12.70mm, the RS0053K000FE73 measures 7.92mm x 22.23mm, and the 45F3K0E measures 8.70mm x 23.80mm. These differences may impact board layout and thermal management considerations.

Q: Are all substitute parts RoHS and REACH compliant?

A: Yes. All three parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Does operating temperature range affect substitution eligibility?

A: The UB5C-3KF1 operates from -55°C to 250°C, while the RS0053K000FE73 extends to -65°C. The 45F3K0E operating temperature is not specified. Substitution is valid only when the application temperature requirements fall within the specified range of the replacement part.

Q: What is the difference between bulk and cut tape packaging?

A: The UB5C-3KF1 is supplied in bulk packaging, while the RS0053K000FE73 is supplied in cut tape format. This affects handling, storage, and automated assembly compatibility but does not impact electrical or mechanical performance.

Q: Are the wirewound construction and temperature coefficient identical across all parts?

A: Yes. All three parts use wirewound construction with ±20ppm/°C temperature coefficient, ensuring consistent thermal and electrical behavior across substitutions.