HS50 R20 F Equivalent & Substitute Parts

Part Overview

The HS50 R20 F is a 200 mOhms ±1% 50W wirewound chassis mount resistor manufactured by Ohmite in the ARCOL HS series. This component is designed for high-power applications requiring precision resistance with stable thermal characteristics. The part maintains Active product status with 1167 units in current inventory. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct functional replacement in circuit designs.

Substiute Parts

HS50 R20 F

OhmiteIn Stock: 1271HS50 R20 F Datasheet

Current PartRFQ

850FR20E

OhmiteIn Stock: 1268850FR20E Datasheet

DirectRFQ

HS50 R2 F

ARCOLIn Stock: 1099HS50 R2 F Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the HS50 R20 F are classified into two categories based on electrical and mechanical parameter alignment:

Direct Manufacturer Substitute (850FR20E): This Ohmite Metal-Mite®89 series part maintains identical electrical specifications (200 mOhms, ±1% tolerance, 50W power rating, wirewound composition, aluminum housing, flanged mounting, solder lugs). The substitute exhibits a lower temperature coefficient (±90ppm/°C versus ±100ppm/°C) and extended operating temperature range (-55°C to 275°C). Physical dimensions differ slightly (1.938" L x 1.156" W versus 1.933" L x 0.559" W), requiring verification of board layout compatibility.

Parametric Equivalent (HS50 R2 F): This ARCOL HS series part from the same manufacturer family provides identical electrical and mechanical specifications to the main part, including resistance, tolerance, power rating, temperature coefficient, physical dimensions, and mounting configuration. This represents a direct parametric match within the same product series.

Parameter Comparison

Engineering Selection Recommendations

HS50 R2 F (Parametric Equivalent): This part is the primary equivalent option, offering identical electrical performance and mechanical configuration within the same ARCOL HS product family. Both parts maintain RoHS compliance and are suitable for direct substitution in applications where the original specification is required.

850FR20E (Direct Substitute): This Metal-Mite®89 series alternative provides equivalent electrical functionality with improved temperature coefficient performance (±90ppm/°C). The extended operating temperature range (-55°C to 275°C) supports applications requiring broader thermal operation. Physical dimension differences (increased width and height) necessitate board layout verification prior to implementation. ROHS3 compliance is maintained.

Both substitute options maintain Active product status and current inventory availability, supporting production continuity.

Frequently Asked Questions (FAQ)

Q: Can HS50 R2 F replace HS50 R20 F directly? A: Yes. Both parts share identical electrical specifications (200 mOhms, ±1% tolerance, 50W), composition (wirewound), temperature coefficient (±100ppm/°C), and physical dimensions (1.933" L x 0.559" W). Direct substitution is supported without circuit modification.

Q: What are the key differences between 850FR20E and HS50 R20 F? A: Electrical specifications are equivalent (200 mOhms, ±1%, 50W). The 850FR20E exhibits a lower temperature coefficient (±90ppm/°C versus ±100ppm/°C) and wider operating temperature range (-55°C to 275°C). Physical dimensions differ: 850FR20E measures 1.938" L x 1.156" W compared to 1.933" L x 0.559" W for HS50 R20 F. Board layout compatibility must be confirmed.

Q: Are all substitute parts RoHS compliant? A: Yes. HS50 R20 F and 850FR20E are ROHS3 Compliant. HS50 R2 F is RoHS Compliant. All parts meet regulatory requirements for restricted substance elimination.

Q: Which substitute offers the best thermal stability? A: The 850FR20E provides superior temperature coefficient performance at ±90ppm/°C compared to ±100ppm/°C for both HS50 R20 F and HS50 R2 F. Selection depends on application thermal stability requirements.

Q: Can 850FR20E be used in space-constrained applications? A: The 850FR20E has larger physical dimensions (1.938" L x 1.156" W) than HS50 R20 F (1.933" L x 0.559" W). Space-constrained designs should use HS50 R2 F, which maintains identical dimensions to the original part.