UAL50-750RF8 Equivalent & Substitute Parts

Part Overview

The UAL50-750RF8 is a 750 Ohms ±1% 50W wirewound chassis mount resistor manufactured by Riedon. This component is designed for applications requiring precision current sensing, flame-proof operation, and pulse withstanding capability in high-power environments. The part maintains Active product status with full ROHS3 compliance and operates across an extended temperature range of -55°C to 275°C. Substitute parts are identified when equivalent electrical specifications, mechanical dimensions, and compliance certifications align with the original component requirements.

Substiute Parts

UAL50-750RF8

RiedonIn Stock: 851UAL50-750RF8 Datasheet

Current PartRFQ

850F750E

OhmiteIn Stock: 877850F750E Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 850F750E manufactured by Ohmite qualifies as a direct substitute for the UAL50-750RF8 based on the following critical parameters:

Electrical specifications match exactly: 750 Ohms resistance, ±1% tolerance, 50W power rating, wirewound composition, and ±20ppm/°C temperature coefficient. The operating temperature range is identical at -55°C to 275°C.

Mechanical compatibility is confirmed through equivalent housing construction (aluminum), identical mounting feature (flanges), and matching lead style (solder lugs). Physical dimensions are within acceptable tolerance: length 49.23mm versus 50.00mm, width 29.36mm versus 29.00mm, and height 15.75mm versus 16.00mm.

Compliance alignment is complete: both components are ROHS3 compliant and REACH unaffected, with matching ECCN and HTSUS classifications.

Parameter Comparison

Engineering Selection Recommendations

The 850F750E from Ohmite (Metal-Mite®89 series) is a qualified direct substitute for the UAL50-750RF8. Both components maintain Active product status and satisfy identical electrical and mechanical requirements for 750 Ohm, 50W wirewound chassis mount applications.

Selection between these components may be based on availability, lead time, or procurement preferences. Both parts carry equivalent compliance certifications and are suitable for applications requiring ROHS3 compliance and extended temperature operation. Dimensional variations are minimal and do not impact standard PCB or chassis mounting configurations.

Frequently Asked Questions (FAQ)

Q: Can the 850F750E replace the UAL50-750RF8 in existing designs?

A: Yes. The 850F750E meets all electrical specifications (750 Ohms ±1%, 50W, ±20ppm/°C) and mechanical requirements (aluminum housing, flanged mounting, solder lugs) of the UAL50-750RF8. Dimensional differences are within acceptable tolerance for standard mounting applications.

Q: Are there compliance differences between these parts?

A: No. Both components are ROHS3 compliant, REACH unaffected, and carry identical ECCN and HTSUS classifications.

Q: What are the key parameters that define substitutability for this resistor category?

A: Resistance value, tolerance, power rating, temperature coefficient, operating temperature range, housing type, mounting feature, and lead style must match. Physical dimensions must accommodate existing mounting configurations.

Q: Do these parts have identical temperature performance?

A: Yes. Both components operate across -55°C to 275°C with ±20ppm/°C temperature coefficient, ensuring equivalent thermal stability in high-temperature applications.

Q: Are there packaging or inventory considerations?

A: Both parts are available in bulk packaging. Current inventory levels are 830 pcs for the UAL50-750RF8 and 806 pcs for the 850F750E.