UB5C-900RF8 Equivalent & Substitute Parts

Part Overview

The UB5C-900RF8 is a 900 Ohm ±1% 5W axial wirewound resistor manufactured by Riedon, designed for through-hole applications requiring current sensing capabilities. This component features flame-proof and moisture-resistant construction with pulse-withstanding characteristics, suitable for safety-critical applications. The part is currently active in production with 992 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-900RF8

RiedonIn Stock: 1076UB5C-900RF8 Datasheet

Current PartRFQ

45F900E

OhmiteIn Stock: 105345F900E Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the UB5C-900RF8 is determined by the following critical parameters:

• Resistance value: 900 Ohms (exact match required)
• Tolerance: ±1% (exact match required)
• Power rating: 5W (exact match required)
• Composition: Wirewound (exact match required)
• Package configuration: Axial through-hole (exact match required)
• Temperature coefficient: ±20ppm/°C (exact match required)
• RoHS compliance: ROHS3 Compliant (regulatory requirement)

The substitute part 45F900E meets all critical electrical parameters. Physical dimensions differ due to manufacturing design variations, but both components maintain axial package compatibility for through-hole PCB mounting.

Parameter Comparison

Engineering Selection Recommendations

Both the UB5C-900RF8 and 45F900E are active production components with ROHS3 compliance and EAR99 export classification. Selection between these parts should be based on:

• Availability: UB5C-900RF8 has 992 units in stock; 45F900E has 1037 units in stock
• Packaging format: UB5C-900RF8 is supplied in Tape & Reel; 45F900E is supplied in Bulk
• Physical dimensions: UB5C-900RF8 measures 0.250" Dia × 0.500" L; 45F900E measures 0.343" Dia × 0.937" L
• Series designation: UB series (Riedon) versus Ohmicone® 40 series (Ohmite)

Both components satisfy identical electrical and regulatory requirements for 900 Ohm 5W axial wirewound resistor applications.

Frequently Asked Questions (FAQ)

Q: Can 45F900E be used as a direct replacement for UB5C-900RF8?

A: Yes. Both components share identical electrical specifications: 900 Ohms ±1% tolerance, 5W power rating, ±20ppm/°C temperature coefficient, and axial through-hole package configuration. Both are ROHS3 compliant and rated for -55°C to 250°C operation.

Q: What are the physical dimension differences?

A: The UB5C-900RF8 measures 0.250" diameter × 0.500" length (6.40mm × 12.70mm). The 45F900E measures 0.343" diameter × 0.937" length (8.70mm × 23.80mm). PCB layout and clearance requirements must accommodate the larger 45F900E footprint.

Q: Are there packaging differences between these parts?

A: Yes. The UB5C-900RF8 is supplied in Tape & Reel format, while the 45F900E is supplied in Bulk packaging. Procurement and assembly processes may differ accordingly.

Q: Do both parts meet the same regulatory standards?

A: Yes. Both the UB5C-900RF8 and 45F900E are ROHS3 compliant, REACH unaffected, and classified as EAR99 for export purposes.

Q: What is the moisture sensitivity level for these components?

A: The UB5C-900RF8 has MSL 1 (Unlimited). The 45F900E is listed as Not Applicable for MSL, indicating no moisture sensitivity restrictions.