HS50 R68 J Equivalent & Substitute Parts

Part Overview

The HS50 R68 J is a 680 mOhms ±5% 50W wirewound chassis mount resistor manufactured by Ohmite in the ARCOL HS series. This component is actively produced and stocked with 1034 units available. The part is designed for applications requiring high power dissipation with stable resistance values across operating conditions. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit designs.

Substiute Parts

HS50 R68 J

OhmiteIn Stock: 1144HS50 R68 J Datasheet

Current PartRFQ

HS25 R68 J

ARCOLIn Stock: 846HS25 R68 J Datasheet

Parametric EquivalentRFQ

HS25 R68 J

ARCOLIn Stock: 846HS25 R68 J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The HS25 R68 J qualifies as a parametric equivalent based on matching electrical specifications: identical resistance value (680 mOhms), tolerance (±5%), temperature coefficient (±100ppm/°C), composition (wirewound), housing material (aluminum), mounting feature (flanges), and lead style (solder lugs). The primary difference is the power rating: the substitute operates at 25W versus the main part's 50W. This substitution is valid only in applications where the circuit power dissipation requirement does not exceed 25W. Both parts share the same series designation (ARCOL HS) and package classification (Axial, Box).

Parameter Comparison

Engineering Selection Recommendations

Both the HS50 R68 J and HS25 R68 J maintain active product status with current manufacturing and inventory availability. The HS50 R68 J carries ROHS3 compliance certification. The HS25 R68 J carries RoHS compliance with MSL rating of 1 (Unlimited). Selection between these parts depends solely on the circuit's power dissipation requirement. Applications requiring 50W dissipation must use the HS50 R68 J. Applications with maximum dissipation at or below 25W may use either part; the HS25 R68 J provides a lower-power alternative with identical electrical characteristics and mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the HS25 R68 J replace the HS50 R68 J in all applications?

A: No. The HS25 R68 J is suitable only for applications where circuit power dissipation does not exceed 25W. Applications requiring the full 50W power rating must use the HS50 R68 J.

Q: Are the physical dimensions compatible between these parts?

A: Both parts feature aluminum housing with flanged mounting and solder lugs. The HS50 R68 J measures 1.933" L x 0.559" W (49.10mm x 14.20mm). The HS25 R68 J measures 1.075" L x 1.102" W (27.30mm x 28.00mm). Height when seated is 0.583" (14.80mm) for both. PCB layout and mechanical clearance must accommodate the different length and width dimensions.

Q: Do these parts have identical electrical performance?

A: Yes. Both parts provide 680 mOhms resistance with ±5% tolerance and ±100ppm/°C temperature coefficient. Electrical behavior is identical within the specified operating parameters.

Q: What is the difference in RoHS compliance between these parts?

A: The HS50 R68 J is ROHS3 compliant. The HS25 R68 J is RoHS compliant. Both meet applicable environmental and material restriction standards.

Q: Are both parts currently available?

A: Yes. The HS50 R68 J has 1034 units in stock. The HS25 R68 J has 741 units in stock. Both are listed as active products.