UB3C-180RF8 Equivalent & Substitute Parts

Part Overview

The UB3C-180RF8 is a 180 Ohm ±1% 3W 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 actively produced and ROHS3 compliant, making it suitable for modern electronic assemblies requiring reliable precision resistors in high-power applications.

Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this product category.

Substiute Parts

UB3C-180RF8

RiedonIn Stock: 824UB3C-180RF8 Datasheet

Current PartRFQ

43F180E

OhmiteIn Stock: 91143F180E Datasheet

MFR RecommendedRFQ

RS02B180R0FE70

Vishay DaleIn Stock: 3428RS02B180R0FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB3C-180RF8 is determined by strict equivalence in the following parameters:

• Resistance value: 180 Ohms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• RoHS compliance: ROHS3 Compliant

Substitute parts must maintain these electrical and mechanical specifications. Physical dimensions may vary within industry-standard axial resistor tolerances. Operating temperature range and additional features (such as moisture resistance) are documented but do not restrict substitution eligibility when core parameters match.

Parameter Comparison

Engineering Selection Recommendations

All three parts meet the core electrical requirements for 180 Ohm ±1% 3W wirewound axial resistors and are ROHS3 compliant with REACH unaffected status.

The UB3C-180RF8 offers the most compact physical footprint at 4.00mm diameter and 8.90mm length, making it optimal for space-constrained applications. It includes integrated current sensing, flame-proof, and pulse-withstanding features.

The 43F180E (Ohmite Ohmicone® 40 series) provides a larger form factor at 5.60mm diameter and 15.10mm length, suitable for applications where thermal dissipation or mechanical robustness is prioritized.

The RS02B180R0FE70 (Vishay Dale RS series) offers an intermediate size at 4.75mm diameter and 14.22mm length with moisture-resistant characteristics and an extended lower operating temperature limit of -65°C, beneficial for extreme cold environments.

Frequently Asked Questions (FAQ)

Q: Can I substitute the UB3C-180RF8 with the 43F180E or RS02B180R0FE70?

A: Yes, both parts are electrically equivalent. All three components share identical resistance (180 Ohms), tolerance (±1%), power rating (3W), composition (wirewound), and temperature coefficient (±20ppm/°C). Physical dimensions differ, so verify PCB layout compatibility before substitution.

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

A: The main differences are physical dimensions and packaging format. The UB3C-180RF8 is the smallest, the 43F180E is the largest, and the RS02B180R0FE70 is intermediate. The RS02B180R0FE70 extends the lower operating temperature to -65°C compared to the UB3C-180RF8 at -55°C.

Q: Are all three parts RoHS compliant?

A: Yes, all three parts are ROHS3 compliant and REACH unaffected, meeting modern environmental and regulatory requirements.

Q: Does the UB3C-180RF8's current sensing feature affect substitution?

A: The current sensing feature is an application-specific characteristic of the UB3C-180RF8. Substitute parts provide equivalent electrical performance for the 180 Ohm 3W specification but may not include identical feature sets. Verify application requirements before substitution.

Q: What packaging formats are available?

A: The UB3C-180RF8 is supplied in Tape & Reel format. The 43F180E is available in Bulk packaging. The RS02B180R0FE70 is supplied in Cut Tape format. Select based on assembly process requirements.