HS50 R01 K Equivalent & Substitute Parts

Part Overview

The HS50 R01 K is a 50-watt wirewound chassis mount resistor manufactured by Ohmite, rated at 10 mOhms with ±10% tolerance. This component is designed for high-power applications requiring pulse withstanding capability and stable performance across operating conditions. The part maintains Active product status with full RoHS compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts become necessary when application constraints require reduced power dissipation, alternative packaging formats, or inventory optimization while maintaining core electrical and mechanical compatibility.

Substiute Parts

HS50 R01 K

OhmiteIn Stock: 841HS50 R01 K Datasheet

Current PartRFQ

HS25 R01 K

OhmiteIn Stock: 1215HS25 R01 K Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The HS25 R01 K qualifies as a parametric equivalent based on the following matching criteria:

• Resistance value: 10 mOhms (identical)
• Tolerance: ±10% (identical)
• Composition: Wirewound (identical)
• Temperature Coefficient: ±100 ppm/°C (equivalent specification)
• Housing Type: Aluminum (identical)
• Mounting Feature: Flanges (identical)
• Lead Style: Solder Lugs (identical)
• Compliance: RoHS3 Compliant (meets or exceeds RoHS requirements)

The primary difference is power rating: HS25 R01 K is rated at 25W versus the 50W rating of the main part. This substitution is valid only in applications where the thermal load does not exceed 25W continuous dissipation.

Parameter Comparison

Engineering Selection Recommendations

Selection between HS50 R01 K and HS25 R01 K is determined by power dissipation requirements:

Use HS50 R01 K when continuous power dissipation reaches or exceeds 25W. This part provides thermal margin and pulse withstanding capability for demanding applications.

Use HS25 R01 K when continuous power dissipation remains below 25W. This configuration offers reduced physical footprint (approximately 44% smaller in length and 49% smaller in width) while maintaining identical electrical specifications and RoHS3 compliance.

Both parts maintain identical resistance, tolerance, and temperature coefficient performance. Mounting compatibility is preserved through identical flange design and solder lug termination. Height-seated dimension remains constant at 0.583" (14.80mm) across both variants.

Frequently Asked Questions (FAQ)

Q: Can HS25 R01 K replace HS50 R01 K in all applications?

A: No. Substitution is valid only when application power dissipation does not exceed 25W continuous. Exceeding this threshold will cause thermal stress and potential component failure. Verify actual power dissipation (I²R calculation) before substitution.

Q: Are the mounting dimensions compatible between these parts?

A: Flange mounting and solder lug termination are identical. Height-seated dimension is constant at 0.583" (14.80mm). However, footprint length and width differ: HS50 R01 K measures 1.933" x 1.102" while HS25 R01 K measures 1.075" x 0.559". PCB layout must accommodate the smaller footprint of HS25 R01 K.

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

A: HS50 R01 K carries RoHS Compliant status. HS25 R01 K carries RoHS3 Compliant status, which represents a more recent compliance standard. Both meet current regulatory requirements. HS25 R01 K additionally carries REACH Unaffected designation.

Q: Do these parts have identical electrical performance?

A: Yes, for resistance, tolerance, and temperature coefficient. Both are rated at 10 mOhms ±10% with 100 ppm/°C temperature coefficient. The sole electrical difference is power rating: 50W versus 25W.

Q: What packaging formats are available?

A: HS50 R01 K is supplied in Box packaging. HS25 R01 K is supplied in Bulk packaging. Packaging format does not affect component performance or compatibility.