850F3R3E Equivalent & Substitute Parts

Part Overview

The Ohmite 850F3R3E is a 3.3 Ohms ±1% 50W wirewound chassis mount resistor with aluminum housing, designed for high-power applications requiring precision resistance and thermal stability. This component is currently active in production with 750 units in stock. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the allowed parameter range for this resistor category.

Substiute Parts

850F3R3E

OhmiteIn Stock: 774850F3R3E Datasheet

Current PartRFQ

HS50 3R3 F

ARCOLIn Stock: 1435HS50 3R3 F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The ARCOL HS50 3R3 F qualifies as a direct substitute based on the following critical parameters:

• Resistance value: 3.3 Ohms (exact match)
• Tolerance: ±1% (exact match)
• Power rating: 50W (exact match)
• Composition: Wirewound (exact match)
• Housing type: Aluminum (exact match)
• Mounting feature: Flanges (exact match)
• Lead style: Solder Lugs (exact match)
• Package type: Axial, Box (exact match)

Both components meet the core electrical and mechanical requirements for interchangeability in 50W wirewound chassis mount resistor applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 850F3R3E and HS50 3R3 F are active production components with current inventory availability. The 850F3R3E carries ROHS3 compliance certification, while the ARCOL HS50 3R3 F maintains RoHS compliance. Selection between these parts should be based on supply chain requirements, inventory levels, and specific compliance mandates for the end application. The ARCOL substitute exhibits slightly tighter physical dimensions and a higher temperature coefficient specification, which may be relevant for applications with stringent thermal stability requirements.

Frequently Asked Questions (FAQ)

Q: Can the ARCOL HS50 3R3 F directly replace the Ohmite 850F3R3E in existing designs?

A: Yes. Both components share identical electrical specifications (3.3 Ohms, ±1%, 50W wirewound) and equivalent mechanical mounting features (aluminum housing, flanges, solder lugs). Physical dimensions are within acceptable tolerance for standard chassis mount applications.

Q: What is the difference in temperature coefficient between these parts?

A: The 850F3R3E specifies ±50ppm/°C while the HS50 3R3 F specifies ±100ppm/°C. Applications requiring tighter temperature stability should verify this parameter against circuit design requirements.

Q: Are there packaging differences between these substitutes?

A: Both components use Axial, Box packaging. The ARCOL part is supplied in Bulk packaging, while the Ohmite part packaging type is not specified in the provided data. Verify packaging requirements with your procurement process.

Q: Which part should be selected for new designs?

A: Selection should be based on compliance requirements (ROHS3 vs. RoHS), supply chain availability, and thermal stability needs. Both parts are active production components suitable for new design implementation.