UB3C-150RF1 Equivalent & Substitute Parts

Part Overview

The UB3C-150RF1 is a 150 Ohm ±1% 3W axial wirewound resistor manufactured by Riedon. This through-hole component is designed for current sensing applications with enhanced reliability features including flame proof, moisture resistant, pulse withstanding, and safety certifications. The part is currently active in production with 1,036 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the same resistance value, tolerance, power rating, and package type.

Substiute Parts

UB3C-150RF1

RiedonIn Stock: 1124UB3C-150RF1 Datasheet

Current PartRFQ

43F150E

OhmiteIn Stock: 85443F150E Datasheet

MFR RecommendedRFQ

RS02B150R0FE70

Vishay DaleIn Stock: 2501RS02B150R0FE70 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the UB3C-150RF1 are qualified based on strict equivalence of the following electrical and mechanical parameters:

• Resistance value: 150 Ohms
• Tolerance: ±1%
• Power rating: 3W
• Composition: Wirewound
• Package configuration: Axial through-hole
• Temperature coefficient: ±20ppm/°C
• Number of terminations: 2

All identified substitutes maintain these core specifications. Physical dimensions may vary within acceptable PCB layout tolerances for axial components. Operating temperature ranges and compliance certifications are provided for design validation but do not restrict substitution eligibility when electrical parameters are equivalent.

Parameter Comparison

Engineering Selection Recommendations

All three parts meet the core electrical requirements for 150 Ohm ±1% 3W axial wirewound resistor applications. Selection between UB3C-150RF1, 43F150E, and RS02B150R0FE70 is determined by availability, compliance requirements, and physical space constraints.

The UB3C-150RF1 and RS02B150R0FE70 both carry ROHS3 compliance and REACH Unaffected status. The 43F150E carries RoHS compliance with Vendor Undefined REACH status.

Physical dimensions differ across the three parts. The UB3C-150RF1 is the most compact at 4.00mm diameter and 8.90mm length. The RS02B150R0FE70 measures 4.75mm diameter and 14.22mm length. The 43F150E is the largest at 5.60mm diameter and 15.10mm length. PCB layout and thermal management requirements should guide selection when space is constrained.

Operating temperature ranges extend to 275°C for the 43F150E and -65°C for the RS02B150R0FE70, providing broader environmental coverage than the UB3C-150RF1 baseline of -55°C ~ 250°C.

Frequently Asked Questions (FAQ)

Q: Can 43F150E replace UB3C-150RF1 in all applications?

A: Yes, provided PCB layout accommodates the larger physical dimensions (5.60mm diameter vs. 4.00mm). Electrical specifications are equivalent. RoHS compliance differs; verify REACH requirements for your application.

Q: What is the primary difference between RS02B150R0FE70 and UB3C-150RF1?

A: Electrical specifications are equivalent. RS02B150R0FE70 has a lower operating temperature minimum (-65°C vs. -55°C) and different physical dimensions (4.75mm diameter vs. 4.00mm). Moisture Sensitivity Level classification differs.

Q: Are all three parts suitable for current sensing applications?

A: All three parts meet the electrical requirements for current sensing at 150 Ohms ±1% 3W. The UB3C-150RF1 explicitly lists current sensing as an application feature. Verify thermal and mechanical requirements for your specific circuit design.

Q: Does packaging format affect substitution?

A: The UB3C-150RF1 is supplied in Bulk packaging. The RS02B150R0FE70 is supplied in Cut Tape (CT). The 43F150E is supplied in Bulk. Packaging format does not affect electrical or mechanical compatibility; it affects procurement and handling logistics.

Q: Which substitute has the widest operating temperature range?

A: The 43F150E operates from -55°C to 275°C, providing the highest maximum temperature rating. The RS02B150R0FE70 extends to -65°C minimum. The UB3C-150RF1 operates -55°C ~ 250°C.