HS300 2R2 J Equivalent & Substitute Parts

Part Overview

The HS300 2R2 J is a 300W wirewound chassis mount resistor manufactured by Ohmite, rated at 2.2 Ohms with ±5% tolerance. This component is designed for high-power applications requiring reliable thermal dissipation through aluminum housing and flanged mounting. The part maintains Active product status with full RoHS compliance and unlimited moisture sensitivity rating. Substitute parts become necessary when application constraints require reduced power ratings, alternative packaging formats, or inventory availability considerations while maintaining core electrical specifications.

Substiute Parts

HS300 2R2 J

OhmiteIn Stock: 846HS300 2R2 J Datasheet

Current PartRFQ

HS200 2R2 J

OhmiteIn Stock: 706HS200 2R2 J Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The HS200 2R2 J qualifies as a parametric equivalent based on the following matching criteria:

• Resistance value: 2.2 Ohms (identical)
• Tolerance: ±5% (identical)
• Composition: Wirewound (identical)
• Housing type: Aluminum (identical)
• Mounting feature: Flanges (identical)
• Lead style: M6 Threaded (identical)
• Temperature coefficient: ±100ppm/°C (equivalent specification)
• RoHS compliance: Maintained (ROHS3 Compliant)

The primary distinction is the power rating reduction from 300W to 200W, which represents a downgrade in thermal capacity. This substitution is valid only when circuit requirements do not exceed 200W continuous power dissipation.

Parameter Comparison

Engineering Selection Recommendations

Selection between HS300 2R2 J and HS200 2R2 J depends on power dissipation requirements:

Use HS300 2R2 J when continuous power dissipation approaches or exceeds 200W. This part provides thermal margin and is specified for 300W operation. Active product status and RoHS compliance ensure long-term availability and regulatory conformance.

Use HS200 2R2 J when circuit power dissipation remains below 200W and space constraints or inventory considerations apply. The reduced physical footprint (4.631" x 1.791" versus 5.028" x 2.854") may accommodate compact layouts. ROHS3 compliance maintains regulatory alignment. Packaging format differs (Bulk versus Box), which may affect procurement workflows.

Both parts maintain identical electrical specifications for resistance, tolerance, and temperature coefficient, ensuring functional interchangeability within their respective power ratings.

Frequently Asked Questions (FAQ)

Q: Can HS200 2R2 J replace HS300 2R2 J in all applications?

A: No. The HS200 2R2 J is rated for 200W maximum continuous power dissipation, while the HS300 2R2 J is rated for 300W. Substitution is valid only when actual circuit power dissipation does not exceed 200W. Exceeding this limit will cause thermal failure.

Q: Are the electrical specifications identical between these parts?

A: Yes. Both parts share identical resistance (2.2 Ohms), tolerance (±5%), composition (Wirewound), housing type (Aluminum), mounting features (Flanges), and lead style (M6 Threaded). Temperature coefficient specifications are equivalent (100ppm/°C and ±100ppm/°C).

Q: What are the physical dimension differences?

A: The HS300 2R2 J measures 5.028" L x 2.854" W (127.70mm x 72.50mm), while the HS200 2R2 J measures 4.631" L x 1.791" W (89.70mm x 45.50mm). Both maintain identical seated height of 1.646" (41.80mm). The smaller footprint of the HS200 2R2 J may require PCB layout verification.

Q: Do packaging differences affect component selection?

A: The HS300 2R2 J ships in Box packaging, while the HS200 2R2 J ships in Bulk packaging. This affects procurement quantity minimums and handling procedures but does not impact electrical or mechanical performance.

Q: Are both parts RoHS compliant?

A: Yes. The HS300 2R2 J is RoHS Compliant, and the HS200 2R2 J is ROHS3 Compliant. Both meet current regulatory requirements for hazardous substance restrictions.