UB5C-4K7F1 Equivalent & Substitute Parts

Part Overview

The UB5C-4K7F1 is a 4.7 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, and pulse-withstanding characteristics. The part is currently active in production with 784 units in stock. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

UB5C-4K7F1

RiedonIn Stock: 850UB5C-4K7F1 Datasheet

Current PartRFQ

45F4K7E

OhmiteIn Stock: 113845F4K7E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB5C-4K7F1 is determined by the following critical parameters:

• Resistance value: 4.7 kOhms
• Tolerance: ±1%
• Power rating: 5W
• Composition: Wirewound
• Package: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• RoHS compliance: ROHS3 Compliant
• Regulatory status: REACH Unaffected, EAR99 classification

The substitute part 45F4K7E meets all electrical specifications and regulatory requirements. Physical dimensions differ between the main part (0.250" Dia x 0.500" L) and the substitute (0.343" Dia x 0.937" L), which must be evaluated for board layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-4K7F1 and 45F4K7E are active production components with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Board layout space availability: The 45F4K7E (Ohmite) has larger physical dimensions and requires verification of PCB footprint compatibility.
• Electrical performance: Both parts deliver identical resistance, tolerance, power rating, and temperature coefficient specifications.
• Regulatory compliance: Both parts meet the same environmental and trade classification requirements.
• Availability: Current inventory levels are 784 units for UB5C-4K7F1 and 1106 units for 45F4K7E.

Frequently Asked Questions (FAQ)

Q: Can the 45F4K7E replace the UB5C-4K7F1 in all applications?

A: Electrical substitution is valid when resistance, tolerance, power rating, and temperature coefficient match. Physical dimensions differ; board layout compatibility must be confirmed before substitution.

Q: What are the critical parameters for substituting this 4.7 kOhms 5W axial resistor?

A: Resistance (4.7 kOhms), tolerance (±1%), power rating (5W), composition (wirewound), and temperature coefficient (±20ppm/°C) must remain constant. Package type must be axial through-hole.

Q: Are both parts RoHS compliant?

A: Yes, both UB5C-4K7F1 and 45F4K7E are ROHS3 compliant and REACH unaffected.

Q: What is the primary difference between these two parts?

A: The main difference is physical size. The UB5C-4K7F1 measures 0.250" Dia x 0.500" L, while the 45F4K7E measures 0.343" Dia x 0.937" L. All electrical specifications are identical.

Q: Can I use the larger 45F4K7E in a space designed for the smaller UB5C-4K7F1?

A: Physical dimensions must be verified against PCB layout constraints. The larger substitute may not fit in compact designs.