UB5C-500RF8 Equivalent & Substitute Parts

Part Overview

The UB5C-500RF8 is a 500 Ohm, 1% tolerance, 5W axial wirewound resistor manufactured by Riedon. This component is designed for through-hole applications requiring current sensing functionality with enhanced reliability features including flame proof, moisture resistant, pulse withstanding, and safety certifications. The part is currently in active production status with 942 units available in inventory. Substitute parts are identified when equivalent electrical specifications, mechanical compatibility, and regulatory compliance can be maintained across alternative manufacturers.

Substiute Parts

UB5C-500RF8

RiedonIn Stock: 1035UB5C-500RF8 Datasheet

Current PartRFQ

RS005500R0FE73

Vishay DaleIn Stock: 2728RS005500R0FE73 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB5C-500RF8 is determined by the following critical parameters:

Resistance value must be 500 Ohms with ±1% tolerance to maintain circuit accuracy. Power rating must be 5W to ensure thermal performance under specified load conditions. Composition must be wirewound to preserve the electrical characteristics and current sensing capability. Package type must be axial to ensure mechanical fit in through-hole PCB layouts. Temperature coefficient of ±20ppm/°C is required for stable performance across the operating temperature range. Operating temperature range must support the minimum -55°C lower bound and 250°C upper bound. RoHS3 compliance and REACH unaffected status are mandatory for regulatory alignment.

The RS005500R0FE73 manufactured by Vishay Dale meets all substitution criteria with matching electrical specifications and regulatory certifications.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-500RF8 and RS005500R0FE73 are active production components with full RoHS3 compliance and REACH unaffected status. The RS005500R0FE73 provides an extended lower operating temperature limit of -65°C compared to the UB5C-500RF8 at -55°C, offering broader thermal coverage while maintaining the 250°C upper limit. Both components share identical electrical specifications, wirewound composition, and axial package configuration. Selection between these parts should be based on availability, lead time, packaging format preference (Tape & Reel versus Cut Tape), and specific application temperature requirements within the -55°C to 250°C range.

Frequently Asked Questions (FAQ)

Q: Can the RS005500R0FE73 be used as a direct replacement for the UB5C-500RF8?

A: Yes. Both components share identical resistance value, tolerance, power rating, temperature coefficient, and regulatory compliance. The axial package configuration ensures mechanical compatibility in through-hole PCB designs. The extended lower temperature range of the RS005500R0FE73 (-65°C versus -55°C) provides additional thermal margin.

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

A: The main differences are manufacturer (Riedon versus Vishay Dale), physical dimensions (0.250" Dia x 0.500" L versus 0.312" Dia x 0.875" L), packaging format (Tape & Reel versus Cut Tape), and operating temperature lower limit (-55°C versus -65°C). Electrical performance and regulatory status are equivalent.

Q: Are there any feature differences that affect substitution?

A: The UB5C-500RF8 includes current sense, flame proof, and pulse withstanding features in its specification. The RS005500R0FE73 lists moisture resistant as its primary feature. Both are moisture resistant wirewound components suitable for current sensing applications.

Q: Does the larger physical size of the RS005500R0FE73 affect PCB layout compatibility?

A: Physical dimensions differ between the two parts. The RS005500R0FE73 is larger (0.312" Dia x 0.875" L) compared to the UB5C-500RF8 (0.250" Dia x 0.500" L). PCB layout verification is necessary to confirm clearance and spacing requirements for the substitute component.

Q: Are both parts suitable for current sensing applications?

A: Yes. Both components are wirewound 500 Ohm, 1% tolerance, 5W resistors designed for through-hole current sensing circuits. The electrical characteristics and thermal performance are equivalent for this application class.