UB3C-27RF8 Equivalent & Substitute Parts

Part Overview

The UB3C-27RF8 is a 27 Ohm ±1% 3W through-hole axial wirewound resistor manufactured by Riedon. This component is designed for current sensing applications and features flame-proof, moisture-resistant, and pulse-withstanding characteristics. The part is classified as Active status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same product category.

Substiute Parts

UB3C-27RF8

RiedonIn Stock: 916UB3C-27RF8 Datasheet

Current PartRFQ

43F27RE

OhmiteIn Stock: 118243F27RE Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

The 43F27RE from Ohmite qualifies as a substitute for the UB3C-27RF8 based on the following critical parameters:

• Resistance value: 27 Ohms (identical)
• Tolerance: ±1% (identical)
• Power rating: 3W (identical)
• Composition: Wirewound (identical)
• Package type: Axial (identical)
• Temperature coefficient: ±20ppm/°C (identical)
• RoHS3 compliance: Both parts meet this regulatory requirement

The substitute maintains electrical equivalence and mechanical compatibility within the axial through-hole resistor category. Physical dimensions differ between the two parts; however, both are axial packages suitable for standard PCB mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both the UB3C-27RF8 and 43F27RE are Active status components with full RoHS3 compliance and identical electrical specifications. Selection between these parts should be based on availability, packaging format (Tape & Reel versus Bulk), and physical space constraints within the application. The UB3C-27RF8 measures 0.157" diameter × 0.350" length, while the 43F27RE measures 0.220" diameter × 0.594" length. Applications with space limitations may require evaluation of the smaller UB3C-27RF8 form factor.

Frequently Asked Questions (FAQ)

Q: Can the 43F27RE replace the UB3C-27RF8 in all applications?

A: Yes, provided that the physical dimensions of the 43F27RE (0.220" Dia × 0.594" L) are compatible with the PCB layout and enclosure constraints. Both parts share identical electrical specifications and regulatory compliance.

Q: What are the key electrical parameters that define substitution eligibility?

A: Resistance value (27 Ohms), tolerance (±1%), power rating (3W), temperature coefficient (±20ppm/°C), and composition (Wirewound) must remain constant for substitution within this product category.

Q: Are there packaging differences between these parts?

A: Yes. The UB3C-27RF8 is supplied in Tape & Reel format, while the 43F27RE is supplied in Bulk packaging. Both use axial through-hole packages suitable for standard PCB assembly processes.

Q: Do both parts meet the same regulatory requirements?

A: Yes. Both the UB3C-27RF8 and 43F27RE are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 and HTSUS code 8533.21.0080.

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

A: The UB3C-27RF8 operates from -55°C to 250°C. Operating temperature range for the 43F27RE was not provided in the specification data.